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         /* Status pending, wake up main process */
  70         queue_work(adapter->workqueue, &adapter->main_work);
  71
  72         /* Wait for completion */
  73         wait_event_interruptible(adapter->cmd_wait_q.wait,
  74                                  *(cmd_queued->condition));
  75         if (!*(cmd_queued->condition))
  76                 cancel_flag = true;
  77
  78         if (cancel_flag) {
  79                 mwifiex_cancel_pending_ioctl(adapter);
  80                 dev_dbg(adapter->dev, "cmd cancel\n");
  81         }
  82
  83         status = adapter->cmd_wait_q.status;
  84         adapter->cmd_wait_q.status = 0;
  85
  86         return status;
  87 }
  88
  89 /*
  90  * This function prepares the correct firmware command and
  91  * issues it to set the multicast list.
  92  *
  93  * This function can be used to enable promiscuous mode, or enable all
  94  * multicast packets, or to enable selective multicast.
  95  */
  96 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  97                                 struct mwifiex_multicast_list *mcast_list)
  98 {
  99         int ret = 0;
 100         u16 old_pkt_filter;
 101
 102         old_pkt_filter = priv->curr_pkt_filter;
 103
 104         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
 105                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
 106                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 107                 priv->curr_pkt_filter &=
 108                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 109         } else {
 110                 /* Multicast */
 111                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 112                 if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
 113                         dev_dbg(priv->adapter->dev,
 114                                 "info: Enabling All Multicast!\n");
 115                         priv->curr_pkt_filter |=
 116                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 117                 } else {
 118                         priv->curr_pkt_filter &=
 119                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 120                         if (mcast_list->num_multicast_addr) {
 121                                 dev_dbg(priv->adapter->dev,
 122                                         "info: Set multicast list=%d\n",
 123                                        mcast_list->num_multicast_addr);
 124                                 /* Set multicast addresses to firmware */
 125                                 if (old_pkt_filter == priv->curr_pkt_filter) {
 126                                         /* Send request to firmware */
 127                                         ret = mwifiex_send_cmd_async(priv,
 128                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 129                                                 HostCmd_ACT_GEN_SET, 0,
 130                                                 mcast_list);
 131                                 } else {
 132                                         /* Send request to firmware */
 133                                         ret = mwifiex_send_cmd_async(priv,
 134                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 135                                                 HostCmd_ACT_GEN_SET, 0,
 136                                                 mcast_list);
 137                                 }
 138                         }
 139                 }
 140         }
 141         dev_dbg(priv->adapter->dev,
 142                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 143                old_pkt_filter, priv->curr_pkt_filter);
 144         if (old_pkt_filter != priv->curr_pkt_filter) {
 145                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 146                                              HostCmd_ACT_GEN_SET,
 147                                              0, &priv->curr_pkt_filter);
 148         }
 149
 150         return ret;
 151 }
 152
 153 /*
 154  * This function fills bss descriptor structure using provided
 155  * information.
 156  */
 157 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 158                               u8 *bssid, s32 rssi, u8 *ie_buf,
 159                               size_t ie_len, u16 beacon_period,
 160                               u16 cap_info_bitmap, u8 band,
 161                               struct mwifiex_bssdescriptor *bss_desc)
 162 {
 163         int ret;
 164
 165         memcpy(bss_desc->mac_address, bssid, ETH_ALEN);
 166         bss_desc->rssi = rssi;
 167         bss_desc->beacon_buf = ie_buf;
 168         bss_desc->beacon_buf_size = ie_len;
 169         bss_desc->beacon_period = beacon_period;
 170         bss_desc->cap_info_bitmap = cap_info_bitmap;
 171         bss_desc->bss_band = band;
 172         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 173                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 174                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 175         } else {
 176                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 177         }
 178         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 179                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 180         else
 181                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 182
 183         ret = mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc,
 184                                               ie_buf, ie_len);
 185
 186         return ret;
 187 }
 188
 189 /*
 190  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 191  * In both Ad-Hoc and infra mode, an deauthentication is performed
 192  * first.
 193  */
 194 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 195                       struct cfg80211_ssid *req_ssid)
 196 {
 197         int ret;
 198         struct mwifiex_adapter *adapter = priv->adapter;
 199         struct mwifiex_bssdescriptor *bss_desc = NULL;
 200         u8 *beacon_ie = NULL;
 201
 202         priv->scan_block = false;
 203
 204         if (bss) {
 205                 /* Allocate and fill new bss descriptor */
 206                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 207                                 GFP_KERNEL);
 208                 if (!bss_desc) {
 209                         dev_err(priv->adapter->dev, " failed to alloc bss_desc\n");
 210                         return -ENOMEM;
 211                 }
 212
 213                 beacon_ie = kmemdup(bss->information_elements,
 214                                         bss->len_beacon_ies, GFP_KERNEL);
 215                 if (!beacon_ie) {
 216                         kfree(bss_desc);
 217                         dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 218                         return -ENOMEM;
 219                 }
 220
 221                 ret = mwifiex_fill_new_bss_desc(priv, bss->bssid, bss->signal,
 222                                                 beacon_ie, bss->len_beacon_ies,
 223                                                 bss->beacon_interval,
 224                                                 bss->capability,
 225                                                 *(u8 *)bss->priv, bss_desc);
 226                 if (ret)
 227                         goto done;
 228         }
 229
 230         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 231                 /* Infra mode */
 232                 ret = mwifiex_deauthenticate(priv, NULL);
 233                 if (ret)
 234                         goto done;
 235
 236                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 237                 if (ret)
 238                         goto done;
 239
 240                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 241                                       "associating...\n");
 242
 243                 if (!netif_queue_stopped(priv->netdev))
 244                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 245                 if (netif_carrier_ok(priv->netdev))
 246                         netif_carrier_off(priv->netdev);
 247
 248                 /* Clear any past association response stored for
 249                  * application retrieval */
 250                 priv->assoc_rsp_size = 0;
 251                 ret = mwifiex_associate(priv, bss_desc);
 252
 253                 /* If auth type is auto and association fails using open mode,
 254                  * try to connect using shared mode */
 255                 if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
 256                     priv->sec_info.is_authtype_auto &&
 257                     priv->sec_info.wep_enabled) {
 258                         priv->sec_info.authentication_mode =
 259                                                 NL80211_AUTHTYPE_SHARED_KEY;
 260                         ret = mwifiex_associate(priv, bss_desc);
 261                 }
 262
 263                 if (bss)
 264                         cfg80211_put_bss(bss);
 265         } else {
 266                 /* Adhoc mode */
 267                 /* If the requested SSID matches current SSID, return */
 268                 if (bss_desc && bss_desc->ssid.ssid_len &&
 269                     (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
 270                                        ssid, &bss_desc->ssid))) {
 271                         kfree(bss_desc);
 272                         kfree(beacon_ie);
 273                         return 0;
 274                 }
 275
 276                 /* Exit Adhoc mode first */
 277                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 278                 ret = mwifiex_deauthenticate(priv, NULL);
 279                 if (ret)
 280                         goto done;
 281
 282                 priv->adhoc_is_link_sensed = false;
 283
 284                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 285
 286                 if (!netif_queue_stopped(priv->netdev))
 287                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 288                 if (netif_carrier_ok(priv->netdev))
 289                         netif_carrier_off(priv->netdev);
 290
 291                 if (!ret) {
 292                         dev_dbg(adapter->dev, "info: network found in scan"
 293                                                         " list. Joining...\n");
 294                         ret = mwifiex_adhoc_join(priv, bss_desc);
 295                         if (bss)
 296                                 cfg80211_put_bss(bss);
 297                 } else {
 298                         dev_dbg(adapter->dev, "info: Network not found in "
 299                                 "the list, creating adhoc with ssid = %s\n",
 300                                 req_ssid->ssid);
 301                         ret = mwifiex_adhoc_start(priv, req_ssid);
 302                 }
 303         }
 304
 305 done:
 306         kfree(bss_desc);
 307         kfree(beacon_ie);
 308         return ret;
 309 }
 310
 311 /*
 312  * IOCTL request handler to set host sleep configuration.
 313  *
 314  * This function prepares the correct firmware command and
 315  * issues it.
 316  */
 317 static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 318                                  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 319
 320 {
 321         struct mwifiex_adapter *adapter = priv->adapter;
 322         int status = 0;
 323         u32 prev_cond = 0;
 324
 325         if (!hs_cfg)
 326                 return -ENOMEM;
 327
 328         switch (action) {
 329         case HostCmd_ACT_GEN_SET:
 330                 if (adapter->pps_uapsd_mode) {
 331                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 332                                 " is blocked in UAPSD/PPS mode\n");
 333                         status = -1;
 334                         break;
 335                 }
 336                 if (hs_cfg->is_invoke_hostcmd) {
 337                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
 338                                 if (!adapter->is_hs_configured)
 339                                         /* Already cancelled */
 340                                         break;
 341                                 /* Save previous condition */
 342                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 343                                                         .conditions);
 344                                 adapter->hs_cfg.conditions =
 345                                                 cpu_to_le32(hs_cfg->conditions);
 346                         } else if (hs_cfg->conditions) {
 347                                 adapter->hs_cfg.conditions =
 348                                                 cpu_to_le32(hs_cfg->conditions);
 349                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 350                                 if (hs_cfg->gap)
 351                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 352                         } else if (adapter->hs_cfg.conditions
 353                                    == cpu_to_le32(HOST_SLEEP_CFG_CANCEL)) {
 354                                 /* Return failure if no parameters for HS
 355                                    enable */
 356                                 status = -1;
 357                                 break;
 358                         }
 359                         if (cmd_type == MWIFIEX_SYNC_CMD)
 360                                 status = mwifiex_send_cmd_sync(priv,
 361                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 362                                                 HostCmd_ACT_GEN_SET, 0,
 363                                                 &adapter->hs_cfg);
 364                         else
 365                                 status = mwifiex_send_cmd_async(priv,
 366                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 367                                                 HostCmd_ACT_GEN_SET, 0,
 368                                                 &adapter->hs_cfg);
 369                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
 370                                 /* Restore previous condition */
 371                                 adapter->hs_cfg.conditions =
 372                                                 cpu_to_le32(prev_cond);
 373                 } else {
 374                         adapter->hs_cfg.conditions =
 375                                                 cpu_to_le32(hs_cfg->conditions);
 376                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 377                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 378                 }
 379                 break;
 380         case HostCmd_ACT_GEN_GET:
 381                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 382                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 383                 hs_cfg->gap = adapter->hs_cfg.gap;
 384                 break;
 385         default:
 386                 status = -1;
 387                 break;
 388         }
 389
 390         return status;
 391 }
 392
 393 /*
 394  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 395  *
 396  * This function allocates the IOCTL request buffer, fills it
 397  * with requisite parameters and calls the IOCTL handler.
 398  */
 399 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 400 {
 401         struct mwifiex_ds_hs_cfg hscfg;
 402
 403         hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
 404         hscfg.is_invoke_hostcmd = true;
 405
 406         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 407                                     cmd_type, &hscfg);
 408 }
 409 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 410
 411 /*
 412  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 413  *
 414  * This function allocates the IOCTL request buffer, fills it
 415  * with requisite parameters and calls the IOCTL handler.
 416  */
 417 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 418 {
 419         struct mwifiex_ds_hs_cfg hscfg;
 420
 421         if (adapter->hs_activated) {
 422                 dev_dbg(adapter->dev, "cmd: HS Already actived\n");
 423                 return true;
 424         }
 425
 426         adapter->hs_activate_wait_q_woken = false;
 427
 428         memset(&hscfg, 0, sizeof(struct mwifiex_hs_config_param));
 429         hscfg.is_invoke_hostcmd = true;
 430
 431         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 432                                                    MWIFIEX_BSS_ROLE_STA),
 433                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 434                                   &hscfg)) {
 435                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 436                 return false;
 437         }
 438
 439         wait_event_interruptible(adapter->hs_activate_wait_q,
 440                                  adapter->hs_activate_wait_q_woken);
 441
 442         return true;
 443 }
 444 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 445
 446 /*
 447  * IOCTL request handler to get BSS information.
 448  *
 449  * This function collates the information from different driver structures
 450  * to send to the user.
 451  */
 452 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 453                          struct mwifiex_bss_info *info)
 454 {
 455         struct mwifiex_adapter *adapter = priv->adapter;
 456         struct mwifiex_bssdescriptor *bss_desc;
 457
 458         if (!info)
 459                 return -1;
 460
 461         bss_desc = &priv->curr_bss_params.bss_descriptor;
 462
 463         info->bss_mode = priv->bss_mode;
 464
 465         memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
 466
 467         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 468
 469         info->bss_chan = bss_desc->channel;
 470
 471         info->region_code = adapter->region_code;
 472
 473         info->media_connected = priv->media_connected;
 474
 475         info->max_power_level = priv->max_tx_power_level;
 476         info->min_power_level = priv->min_tx_power_level;
 477
 478         info->adhoc_state = priv->adhoc_state;
 479
 480         info->bcn_nf_last = priv->bcn_nf_last;
 481
 482         if (priv->sec_info.wep_enabled)
 483                 info->wep_status = true;
 484         else
 485                 info->wep_status = false;
 486
 487         info->is_hs_configured = adapter->is_hs_configured;
 488         info->is_deep_sleep = adapter->is_deep_sleep;
 489
 490         return 0;
 491 }
 492
 493 /*
 494  * The function disables auto deep sleep mode.
 495  */
 496 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 497 {
 498         struct mwifiex_ds_auto_ds auto_ds;
 499
 500         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 501
 502         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 503                                      DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
 504 }
 505 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 506
 507 /*
 508  * IOCTL request handler to set/get active channel.
 509  *
 510  * This function performs validity checking on channel/frequency
 511  * compatibility and returns failure if not valid.
 512  */
 513 int mwifiex_bss_set_channel(struct mwifiex_private *priv,
 514                             struct mwifiex_chan_freq_power *chan)
 515 {
 516         struct mwifiex_adapter *adapter = priv->adapter;
 517         struct mwifiex_chan_freq_power *cfp = NULL;
 518
 519         if (!chan)
 520                 return -1;
 521
 522         if (!chan->channel && !chan->freq)
 523                 return -1;
 524         if (adapter->adhoc_start_band & BAND_AN)
 525                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
 526         else if (adapter->adhoc_start_band & BAND_A)
 527                 adapter->adhoc_start_band = BAND_G | BAND_B;
 528         if (chan->channel) {
 529                 if (chan->channel <= MAX_CHANNEL_BAND_BG)
 530                         cfp = mwifiex_get_cfp(priv, 0, (u16) chan->channel, 0);
 531                 if (!cfp) {
 532                         cfp = mwifiex_get_cfp(priv, BAND_A,
 533                                               (u16) chan->channel, 0);
 534                         if (cfp) {
 535                                 if (adapter->adhoc_11n_enabled)
 536                                         adapter->adhoc_start_band = BAND_A
 537                                                                     | BAND_AN;
 538                                 else
 539                                         adapter->adhoc_start_band = BAND_A;
 540                         }
 541                 }
 542         } else {
 543                 if (chan->freq <= MAX_FREQUENCY_BAND_BG)
 544                         cfp = mwifiex_get_cfp(priv, 0, 0, chan->freq);
 545                 if (!cfp) {
 546                         cfp = mwifiex_get_cfp(priv, BAND_A, 0, chan->freq);
 547                         if (cfp) {
 548                                 if (adapter->adhoc_11n_enabled)
 549                                         adapter->adhoc_start_band = BAND_A
 550                                                                     | BAND_AN;
 551                                 else
 552                                         adapter->adhoc_start_band = BAND_A;
 553                         }
 554                 }
 555         }
 556         if (!cfp || !cfp->channel) {
 557                 dev_err(adapter->dev, "invalid channel/freq\n");
 558                 return -1;
 559         }
 560         priv->adhoc_channel = (u8) cfp->channel;
 561         chan->channel = cfp->channel;
 562         chan->freq = cfp->freq;
 563
 564         return 0;
 565 }
 566
 567 /*
 568  * IOCTL request handler to set/get Ad-Hoc channel.
 569  *
 570  * This function prepares the correct firmware command and
 571  * issues it to set or get the ad-hoc channel.
 572  */
 573 static int mwifiex_bss_ioctl_ibss_channel(struct mwifiex_private *priv,
 574                                           u16 action, u16 *channel)
 575 {
 576         if (action == HostCmd_ACT_GEN_GET) {
 577                 if (!priv->media_connected) {
 578                         *channel = priv->adhoc_channel;
 579                         return 0;
 580                 }
 581         } else {
 582                 priv->adhoc_channel = (u8) *channel;
 583         }
 584
 585         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_RF_CHANNEL,
 586                                      action, 0, channel);
 587 }
 588
 589 /*
 590  * IOCTL request handler to change Ad-Hoc channel.
 591  *
 592  * This function allocates the IOCTL request buffer, fills it
 593  * with requisite parameters and calls the IOCTL handler.
 594  *
 595  * The function follows the following steps to perform the change -
 596  *      - Get current IBSS information
 597  *      - Get current channel
 598  *      - If no change is required, return
 599  *      - If not connected, change channel and return
 600  *      - If connected,
 601  *          - Disconnect
 602  *          - Change channel
 603  *          - Perform specific SSID scan with same SSID
 604  *          - Start/Join the IBSS
 605  */
 606 int
 607 mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, u16 channel)
 608 {
 609         int ret;
 610         struct mwifiex_bss_info bss_info;
 611         struct mwifiex_ssid_bssid ssid_bssid;
 612         u16 curr_chan = 0;
 613         struct cfg80211_bss *bss = NULL;
 614         struct ieee80211_channel *chan;
 615         enum ieee80211_band band;
 616
 617         memset(&bss_info, 0, sizeof(bss_info));
 618
 619         /* Get BSS information */
 620         if (mwifiex_get_bss_info(priv, &bss_info))
 621                 return -1;
 622
 623         /* Get current channel */
 624         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
 625                                              &curr_chan);
 626
 627         if (curr_chan == channel) {
 628                 ret = 0;
 629                 goto done;
 630         }
 631         dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
 632                 curr_chan, channel);
 633
 634         if (!bss_info.media_connected) {
 635                 ret = 0;
 636                 goto done;
 637         }
 638
 639         /* Do disonnect */
 640         memset(&ssid_bssid, 0, ETH_ALEN);
 641         ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
 642
 643         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
 644                                              &channel);
 645
 646         /* Do specific SSID scanning */
 647         if (mwifiex_request_scan(priv, &bss_info.ssid)) {
 648                 ret = -1;
 649                 goto done;
 650         }
 651
 652         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 653         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 654                                        ieee80211_channel_to_frequency(channel,
 655                                                                       band));
 656
 657         /* Find the BSS we want using available scan results */
 658         bss = cfg80211_get_bss(priv->wdev->wiphy, chan, bss_info.bssid,
 659                                bss_info.ssid.ssid, bss_info.ssid.ssid_len,
 660                                WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 661         if (!bss)
 662                 wiphy_warn(priv->wdev->wiphy, "assoc: bss %pM not in scan results\n",
 663                            bss_info.bssid);
 664
 665         ret = mwifiex_bss_start(priv, bss, &bss_info.ssid);
 666 done:
 667         return ret;
 668 }
 669
 670 /*
 671  * IOCTL request handler to get rate.
 672  *
 673  * This function prepares the correct firmware command and
 674  * issues it to get the current rate if it is connected,
 675  * otherwise, the function returns the lowest supported rate
 676  * for the band.
 677  */
 678 static int mwifiex_rate_ioctl_get_rate_value(struct mwifiex_private *priv,
 679                                              struct mwifiex_rate_cfg *rate_cfg)
 680 {
 681         rate_cfg->is_rate_auto = priv->is_data_rate_auto;
 682         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 683                                      HostCmd_ACT_GEN_GET, 0, NULL);
 684 }
 685
 686 /*
 687  * IOCTL request handler to set rate.
 688  *
 689  * This function prepares the correct firmware command and
 690  * issues it to set the current rate.
 691  *
 692  * The function also performs validation checking on the supplied value.
 693  */
 694 static int mwifiex_rate_ioctl_set_rate_value(struct mwifiex_private *priv,
 695                                              struct mwifiex_rate_cfg *rate_cfg)
 696 {
 697         u8 rates[MWIFIEX_SUPPORTED_RATES];
 698         u8 *rate;
 699         int rate_index, ret;
 700         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
 701         u32 i;
 702         struct mwifiex_adapter *adapter = priv->adapter;
 703
 704         if (rate_cfg->is_rate_auto) {
 705                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 706                 /* Support all HR/DSSS rates */
 707                 bitmap_rates[0] = 0x000F;
 708                 /* Support all OFDM rates */
 709                 bitmap_rates[1] = 0x00FF;
 710                 /* Support all HT-MCSs rate */
 711                 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates) - 3; i++)
 712                         bitmap_rates[i + 2] = 0xFFFF;
 713                 bitmap_rates[9] = 0x3FFF;
 714         } else {
 715                 memset(rates, 0, sizeof(rates));
 716                 mwifiex_get_active_data_rates(priv, rates);
 717                 rate = rates;
 718                 for (i = 0; (rate[i] && i < MWIFIEX_SUPPORTED_RATES); i++) {
 719                         dev_dbg(adapter->dev, "info: rate=%#x wanted=%#x\n",
 720                                 rate[i], rate_cfg->rate);
 721                         if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
 722                                 break;
 723                 }
 724                 if ((i == MWIFIEX_SUPPORTED_RATES) || !rate[i]) {
 725                         dev_err(adapter->dev, "fixed data rate %#x is out "
 726                                "of range\n", rate_cfg->rate);
 727                         return -1;
 728                 }
 729                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 730
 731                 rate_index = mwifiex_data_rate_to_index(rate_cfg->rate);
 732
 733                 /* Only allow b/g rates to be set */
 734                 if (rate_index >= MWIFIEX_RATE_INDEX_HRDSSS0 &&
 735                     rate_index <= MWIFIEX_RATE_INDEX_HRDSSS3) {
 736                         bitmap_rates[0] = 1 << rate_index;
 737                 } else {
 738                         rate_index -= 1; /* There is a 0x00 in the table */
 739                         if (rate_index >= MWIFIEX_RATE_INDEX_OFDM0 &&
 740                             rate_index <= MWIFIEX_RATE_INDEX_OFDM7)
 741                                 bitmap_rates[1] = 1 << (rate_index -
 742                                                    MWIFIEX_RATE_INDEX_OFDM0);
 743                 }
 744         }
 745
 746         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
 747                                     HostCmd_ACT_GEN_SET, 0, bitmap_rates);
 748
 749         return ret;
 750 }
 751
 752 /*
 753  * IOCTL request handler to set/get rate.
 754  *
 755  * This function can be used to set/get either the rate value or the
 756  * rate index.
 757  */
 758 static int mwifiex_rate_ioctl_cfg(struct mwifiex_private *priv,
 759                                   struct mwifiex_rate_cfg *rate_cfg)
 760 {
 761         int status;
 762
 763         if (!rate_cfg)
 764                 return -1;
 765
 766         if (rate_cfg->action == HostCmd_ACT_GEN_GET)
 767                 status = mwifiex_rate_ioctl_get_rate_value(priv, rate_cfg);
 768         else
 769                 status = mwifiex_rate_ioctl_set_rate_value(priv, rate_cfg);
 770
 771         return status;
 772 }
 773
 774 /*
 775  * Sends IOCTL request to get the data rate.
 776  *
 777  * This function allocates the IOCTL request buffer, fills it
 778  * with requisite parameters and calls the IOCTL handler.
 779  */
 780 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,
 781                               struct mwifiex_rate_cfg *rate)
 782 {
 783         int ret;
 784
 785         memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
 786         rate->action = HostCmd_ACT_GEN_GET;
 787         ret = mwifiex_rate_ioctl_cfg(priv, rate);
 788
 789         if (!ret) {
 790                 if (rate->is_rate_auto)
 791                         rate->rate = mwifiex_index_to_data_rate(priv,
 792                                                                 priv->tx_rate,
 793                                                                 priv->tx_htinfo
 794                                                                 );
 795                 else
 796                         rate->rate = priv->data_rate;
 797         } else {
 798                 ret = -1;
 799         }
 800
 801         return ret;
 802 }
 803
 804 /*
 805  * IOCTL request handler to set tx power configuration.
 806  *
 807  * This function prepares the correct firmware command and
 808  * issues it.
 809  *
 810  * For non-auto power mode, all the following power groups are set -
 811  *      - Modulation class HR/DSSS
 812  *      - Modulation class OFDM
 813  *      - Modulation class HTBW20
 814  *      - Modulation class HTBW40
 815  */
 816 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 817                          struct mwifiex_power_cfg *power_cfg)
 818 {
 819         int ret;
 820         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 821         struct mwifiex_types_power_group *pg_tlv;
 822         struct mwifiex_power_group *pg;
 823         u8 *buf;
 824         u16 dbm = 0;
 825
 826         if (!power_cfg->is_power_auto) {
 827                 dbm = (u16) power_cfg->power_level;
 828                 if ((dbm < priv->min_tx_power_level) ||
 829                     (dbm > priv->max_tx_power_level)) {
 830                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 831                                 " is out of range (%d dBm-%d dBm)\n",
 832                                 dbm, priv->min_tx_power_level,
 833                                 priv->max_tx_power_level);
 834                         return -1;
 835                 }
 836         }
 837         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 838         if (!buf) {
 839                 dev_err(priv->adapter->dev, "%s: failed to alloc cmd buffer\n",
 840                         __func__);
 841                 return -ENOMEM;
 842         }
 843
 844         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 845         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 846         if (!power_cfg->is_power_auto) {
 847                 txp_cfg->mode = cpu_to_le32(1);
 848                 pg_tlv = (struct mwifiex_types_power_group *)
 849                          (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
 850                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 851                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 852                 pg = (struct mwifiex_power_group *)
 853                      (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
 854                       + sizeof(struct mwifiex_types_power_group));
 855                 /* Power group for modulation class HR/DSSS */
 856                 pg->first_rate_code = 0x00;
 857                 pg->last_rate_code = 0x03;
 858                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 859                 pg->power_step = 0;
 860                 pg->power_min = (s8) dbm;
 861                 pg->power_max = (s8) dbm;
 862                 pg++;
 863                 /* Power group for modulation class OFDM */
 864                 pg->first_rate_code = 0x00;
 865                 pg->last_rate_code = 0x07;
 866                 pg->modulation_class = MOD_CLASS_OFDM;
 867                 pg->power_step = 0;
 868                 pg->power_min = (s8) dbm;
 869                 pg->power_max = (s8) dbm;
 870                 pg++;
 871                 /* Power group for modulation class HTBW20 */
 872                 pg->first_rate_code = 0x00;
 873                 pg->last_rate_code = 0x20;
 874                 pg->modulation_class = MOD_CLASS_HT;
 875                 pg->power_step = 0;
 876                 pg->power_min = (s8) dbm;
 877                 pg->power_max = (s8) dbm;
 878                 pg->ht_bandwidth = HT_BW_20;
 879                 pg++;
 880                 /* Power group for modulation class HTBW40 */
 881                 pg->first_rate_code = 0x00;
 882                 pg->last_rate_code = 0x20;
 883                 pg->modulation_class = MOD_CLASS_HT;
 884                 pg->power_step = 0;
 885                 pg->power_min = (s8) dbm;
 886                 pg->power_max = (s8) dbm;
 887                 pg->ht_bandwidth = HT_BW_40;
 888         }
 889         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 890                                     HostCmd_ACT_GEN_SET, 0, buf);
 891
 892         kfree(buf);
 893         return ret;
 894 }
 895
 896 /*
 897  * IOCTL request handler to get power save mode.
 898  *
 899  * This function prepares the correct firmware command and
 900  * issues it.
 901  */
 902 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 903 {
 904         int ret;
 905         struct mwifiex_adapter *adapter = priv->adapter;
 906         u16 sub_cmd;
 907
 908         if (*ps_mode)
 909                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 910         else
 911                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 912         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 913         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 914                                     sub_cmd, BITMAP_STA_PS, NULL);
 915         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 916                 ret = mwifiex_send_cmd_async(priv,
 917                                              HostCmd_CMD_802_11_PS_MODE_ENH,
 918                                              GET_PS, 0, NULL);
 919
 920         return ret;
 921 }
 922
 923 /*
 924  * IOCTL request handler to set/reset WPA IE.
 925  *
 926  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 927  * is checked to determine WPA version. If buffer length is zero, the existing
 928  * WPA IE is reset.
 929  */
 930 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 931                                      u8 *ie_data_ptr, u16 ie_len)
 932 {
 933         if (ie_len) {
 934                 if (ie_len > sizeof(priv->wpa_ie)) {
 935                         dev_err(priv->adapter->dev,
 936                                 "failed to copy WPA IE, too big\n");
 937                         return -1;
 938                 }
 939                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 940                 priv->wpa_ie_len = (u8) ie_len;
 941                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 942                         priv->wpa_ie_len, priv->wpa_ie[0]);
 943
 944                 if (priv->wpa_ie[0] == WLAN_EID_WPA) {
 945                         priv->sec_info.wpa_enabled = true;
 946                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 947                         priv->sec_info.wpa2_enabled = true;
 948                 } else {
 949                         priv->sec_info.wpa_enabled = false;
 950                         priv->sec_info.wpa2_enabled = false;
 951                 }
 952         } else {
 953                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 954                 priv->wpa_ie_len = 0;
 955                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 956                         priv->wpa_ie_len, priv->wpa_ie[0]);
 957                 priv->sec_info.wpa_enabled = false;
 958                 priv->sec_info.wpa2_enabled = false;
 959         }
 960
 961         return 0;
 962 }
 963
 964 /*
 965  * IOCTL request handler to set/reset WAPI IE.
 966  *
 967  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 968  * is checked to internally enable WAPI. If buffer length is zero, the existing
 969  * WAPI IE is reset.
 970  */
 971 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
 972                                u8 *ie_data_ptr, u16 ie_len)
 973 {
 974         if (ie_len) {
 975                 if (ie_len > sizeof(priv->wapi_ie)) {
 976                         dev_dbg(priv->adapter->dev,
 977                                 "info: failed to copy WAPI IE, too big\n");
 978                         return -1;
 979                 }
 980                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
 981                 priv->wapi_ie_len = ie_len;
 982                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
 983                         priv->wapi_ie_len, priv->wapi_ie[0]);
 984
 985                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
 986                         priv->sec_info.wapi_enabled = true;
 987         } else {
 988                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
 989                 priv->wapi_ie_len = ie_len;
 990                 dev_dbg(priv->adapter->dev,
 991                         "info: Reset wapi_ie_len=%d IE=%#x\n",
 992                        priv->wapi_ie_len, priv->wapi_ie[0]);
 993                 priv->sec_info.wapi_enabled = false;
 994         }
 995         return 0;
 996 }
 997
 998 /*
 999  * IOCTL request handler to set WAPI key.
1000  *
1001  * This function prepares the correct firmware command and
1002  * issues it.
1003  */
1004 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
1005                                struct mwifiex_ds_encrypt_key *encrypt_key)
1006 {
1007
1008         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
1009                                      HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1010                                      encrypt_key);
1011 }
1012
1013 /*
1014  * IOCTL request handler to set WEP network key.
1015  *
1016  * This function prepares the correct firmware command and
1017  * issues it, after validation checks.
1018  */
1019 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
1020                               struct mwifiex_ds_encrypt_key *encrypt_key)
1021 {
1022         int ret;
1023         struct mwifiex_wep_key *wep_key;
1024         int index;
1025
1026         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
1027                 priv->wep_key_curr_index = 0;
1028         wep_key = &priv->wep_key[priv->wep_key_curr_index];
1029         index = encrypt_key->key_index;
1030         if (encrypt_key->key_disable) {
1031                 priv->sec_info.wep_enabled = 0;
1032         } else if (!encrypt_key->key_len) {
1033                 /* Copy the required key as the current key */
1034                 wep_key = &priv->wep_key[index];
1035                 if (!wep_key->key_length) {
1036                         dev_err(priv->adapter->dev,
1037                                 "key not set, so cannot enable it\n");
1038                         return -1;
1039                 }
1040                 priv->wep_key_curr_index = (u16) index;
1041                 priv->sec_info.wep_enabled = 1;
1042         } else {
1043                 wep_key = &priv->wep_key[index];
1044                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
1045                 /* Copy the key in the driver */
1046                 memcpy(wep_key->key_material,
1047                        encrypt_key->key_material,
1048                        encrypt_key->key_len);
1049                 wep_key->key_index = index;
1050                 wep_key->key_length = encrypt_key->key_len;
1051                 priv->sec_info.wep_enabled = 1;
1052         }
1053         if (wep_key->key_length) {
1054                 /* Send request to firmware */
1055                 ret = mwifiex_send_cmd_async(priv,
1056                                              HostCmd_CMD_802_11_KEY_MATERIAL,
1057                                              HostCmd_ACT_GEN_SET, 0, NULL);
1058                 if (ret)
1059                         return ret;
1060         }
1061         if (priv->sec_info.wep_enabled)
1062                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1063         else
1064                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1065
1066         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1067                                     HostCmd_ACT_GEN_SET, 0,
1068                                     &priv->curr_pkt_filter);
1069
1070         return ret;
1071 }
1072
1073 /*
1074  * IOCTL request handler to set WPA key.
1075  *
1076  * This function prepares the correct firmware command and
1077  * issues it, after validation checks.
1078  *
1079  * Current driver only supports key length of up to 32 bytes.
1080  *
1081  * This function can also be used to disable a currently set key.
1082  */
1083 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
1084                               struct mwifiex_ds_encrypt_key *encrypt_key)
1085 {
1086         int ret;
1087         u8 remove_key = false;
1088         struct host_cmd_ds_802_11_key_material *ibss_key;
1089
1090         /* Current driver only supports key length of up to 32 bytes */
1091         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
1092                 dev_err(priv->adapter->dev, "key length too long\n");
1093                 return -1;
1094         }
1095
1096         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1097                 /*
1098                  * IBSS/WPA-None uses only one key (Group) for both receiving
1099                  * and sending unicast and multicast packets.
1100                  */
1101                 /* Send the key as PTK to firmware */
1102                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1103                 ret = mwifiex_send_cmd_async(priv,
1104                                              HostCmd_CMD_802_11_KEY_MATERIAL,
1105                                              HostCmd_ACT_GEN_SET,
1106                                              KEY_INFO_ENABLED, encrypt_key);
1107                 if (ret)
1108                         return ret;
1109
1110                 ibss_key = &priv->aes_key;
1111                 memset(ibss_key, 0,
1112                        sizeof(struct host_cmd_ds_802_11_key_material));
1113                 /* Copy the key in the driver */
1114                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
1115                        encrypt_key->key_len);
1116                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
1117                        sizeof(ibss_key->key_param_set.key_len));
1118                 ibss_key->key_param_set.key_type_id
1119                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
1120                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
1121
1122                 /* Send the key as GTK to firmware */
1123                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
1124         }
1125
1126         if (!encrypt_key->key_index)
1127                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1128
1129         if (remove_key)
1130                 ret = mwifiex_send_cmd_sync(priv,
1131                                             HostCmd_CMD_802_11_KEY_MATERIAL,
1132                                             HostCmd_ACT_GEN_SET,
1133                                             !KEY_INFO_ENABLED, encrypt_key);
1134         else
1135                 ret = mwifiex_send_cmd_sync(priv,
1136                                             HostCmd_CMD_802_11_KEY_MATERIAL,
1137                                             HostCmd_ACT_GEN_SET,
1138                                             KEY_INFO_ENABLED, encrypt_key);
1139
1140         return ret;
1141 }
1142
1143 /*
1144  * IOCTL request handler to set/get network keys.
1145  *
1146  * This is a generic key handling function which supports WEP, WPA
1147  * and WAPI.
1148  */
1149 static int
1150 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1151                               struct mwifiex_ds_encrypt_key *encrypt_key)
1152 {
1153         int status;
1154
1155         if (encrypt_key->is_wapi_key)
1156                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1157         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1158                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1159         else
1160                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1161         return status;
1162 }
1163
1164 /*
1165  * This function returns the driver version.
1166  */
1167 int
1168 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1169                                int max_len)
1170 {
1171         union {
1172                 u32 l;
1173                 u8 c[4];
1174         } ver;
1175         char fw_ver[32];
1176
1177         ver.l = adapter->fw_release_number;
1178         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1179
1180         snprintf(version, max_len, driver_version, fw_ver);
1181
1182         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1183
1184         return 0;
1185 }
1186
1187 /*
1188  * Sends IOCTL request to get signal information.
1189  *
1190  * This function allocates the IOCTL request buffer, fills it
1191  * with requisite parameters and calls the IOCTL handler.
1192  */
1193 int mwifiex_get_signal_info(struct mwifiex_private *priv,
1194                             struct mwifiex_ds_get_signal *signal)
1195 {
1196         int status;
1197
1198         signal->selector = ALL_RSSI_INFO_MASK;
1199
1200         /* Signal info can be obtained only if connected */
1201         if (!priv->media_connected) {
1202                 dev_dbg(priv->adapter->dev,
1203                         "info: Can not get signal in disconnected state\n");
1204                 return -1;
1205         }
1206
1207         status = mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
1208                                        HostCmd_ACT_GEN_GET, 0, signal);
1209
1210         if (!status) {
1211                 if (signal->selector & BCN_RSSI_AVG_MASK)
1212                         priv->qual_level = signal->bcn_rssi_avg;
1213                 if (signal->selector & BCN_NF_AVG_MASK)
1214                         priv->qual_noise = signal->bcn_nf_avg;
1215         }
1216
1217         return status;
1218 }
1219
1220 /*
1221  * Sends IOCTL request to set encoding parameters.
1222  *
1223  * This function allocates the IOCTL request buffer, fills it
1224  * with requisite parameters and calls the IOCTL handler.
1225  */
1226 int mwifiex_set_encode(struct mwifiex_private *priv, const u8 *key,
1227                         int key_len, u8 key_index, int disable)
1228 {
1229         struct mwifiex_ds_encrypt_key encrypt_key;
1230
1231         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1232         encrypt_key.key_len = key_len;
1233         if (!disable) {
1234                 encrypt_key.key_index = key_index;
1235                 if (key_len)
1236                         memcpy(encrypt_key.key_material, key, key_len);
1237         } else {
1238                 encrypt_key.key_disable = true;
1239         }
1240
1241         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1242 }
1243
1244 /*
1245  * Sends IOCTL request to get extended version.
1246  *
1247  * This function allocates the IOCTL request buffer, fills it
1248  * with requisite parameters and calls the IOCTL handler.
1249  */
1250 int
1251 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1252 {
1253         struct mwifiex_ver_ext ver_ext;
1254
1255         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1256         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1257                                   HostCmd_ACT_GEN_GET, 0, &ver_ext))
1258                 return -1;
1259
1260         return 0;
1261 }
1262
1263 /*
1264  * Sends IOCTL request to get statistics information.
1265  *
1266  * This function allocates the IOCTL request buffer, fills it
1267  * with requisite parameters and calls the IOCTL handler.
1268  */
1269 int
1270 mwifiex_get_stats_info(struct mwifiex_private *priv,
1271                        struct mwifiex_ds_get_stats *log)
1272 {
1273         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1274                                      HostCmd_ACT_GEN_GET, 0, log);
1275 }
1276
1277 /*
1278  * IOCTL request handler to read/write register.
1279  *
1280  * This function prepares the correct firmware command and
1281  * issues it.
1282  *
1283  * Access to the following registers are supported -
1284  *      - MAC
1285  *      - BBP
1286  *      - RF
1287  *      - PMIC
1288  *      - CAU
1289  */
1290 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1291                                         struct mwifiex_ds_reg_rw *reg_rw,
1292                                         u16 action)
1293 {
1294         u16 cmd_no;
1295
1296         switch (le32_to_cpu(reg_rw->type)) {
1297         case MWIFIEX_REG_MAC:
1298                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1299                 break;
1300         case MWIFIEX_REG_BBP:
1301                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1302                 break;
1303         case MWIFIEX_REG_RF:
1304                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1305                 break;
1306         case MWIFIEX_REG_PMIC:
1307                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1308                 break;
1309         case MWIFIEX_REG_CAU:
1310                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1311                 break;
1312         default:
1313                 return -1;
1314         }
1315
1316         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1317
1318 }
1319
1320 /*
1321  * Sends IOCTL request to write to a register.
1322  *
1323  * This function allocates the IOCTL request buffer, fills it
1324  * with requisite parameters and calls the IOCTL handler.
1325  */
1326 int
1327 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1328                   u32 reg_offset, u32 reg_value)
1329 {
1330         struct mwifiex_ds_reg_rw reg_rw;
1331
1332         reg_rw.type = cpu_to_le32(reg_type);
1333         reg_rw.offset = cpu_to_le32(reg_offset);
1334         reg_rw.value = cpu_to_le32(reg_value);
1335
1336         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1337 }
1338
1339 /*
1340  * Sends IOCTL request to read from a register.
1341  *
1342  * This function allocates the IOCTL request buffer, fills it
1343  * with requisite parameters and calls the IOCTL handler.
1344  */
1345 int
1346 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1347                  u32 reg_offset, u32 *value)
1348 {
1349         int ret;
1350         struct mwifiex_ds_reg_rw reg_rw;
1351
1352         reg_rw.type = cpu_to_le32(reg_type);
1353         reg_rw.offset = cpu_to_le32(reg_offset);
1354         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1355
1356         if (ret)
1357                 goto done;
1358
1359         *value = le32_to_cpu(reg_rw.value);
1360
1361 done:
1362         return ret;
1363 }
1364
1365 /*
1366  * Sends IOCTL request to read from EEPROM.
1367  *
1368  * This function allocates the IOCTL request buffer, fills it
1369  * with requisite parameters and calls the IOCTL handler.
1370  */
1371 int
1372 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1373                     u8 *value)
1374 {
1375         int ret;
1376         struct mwifiex_ds_read_eeprom rd_eeprom;
1377
1378         rd_eeprom.offset = cpu_to_le16((u16) offset);
1379         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1380
1381         /* Send request to firmware */
1382         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1383                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1384
1385         if (!ret)
1386                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1387         return ret;
1388 }
1389
1390 /*
1391  * This function sets a generic IE. In addition to generic IE, it can
1392  * also handle WPA, WPA2 and WAPI IEs.
1393  */
1394 static int
1395 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1396                           u16 ie_len)
1397 {
1398         int ret = 0;
1399         struct ieee_types_vendor_header *pvendor_ie;
1400         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1401         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1402
1403         /* If the passed length is zero, reset the buffer */
1404         if (!ie_len) {
1405                 priv->gen_ie_buf_len = 0;
1406                 priv->wps.session_enable = false;
1407
1408                 return 0;
1409         } else if (!ie_data_ptr) {
1410                 return -1;
1411         }
1412         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1413         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1414         if (((pvendor_ie->element_id == WLAN_EID_WPA) &&
1415              (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
1416             (pvendor_ie->element_id == WLAN_EID_RSN)) {
1417
1418                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1419                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1420                 priv->wps.session_enable = false;
1421
1422                 return ret;
1423         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1424                 /* IE is a WAPI IE so call set_wapi function */
1425                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1426
1427                 return ret;
1428         }
1429         /*
1430          * Verify that the passed length is not larger than the
1431          * available space remaining in the buffer
1432          */
1433         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1434
1435                 /* Test to see if it is a WPS IE, if so, enable
1436                  * wps session flag
1437                  */
1438                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1439                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
1440                     (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1441                         priv->wps.session_enable = true;
1442                         dev_dbg(priv->adapter->dev,
1443                                 "info: WPS Session Enabled.\n");
1444                 }
1445
1446                 /* Append the passed data to the end of the
1447                    genIeBuffer */
1448                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1449                        ie_len);
1450                 /* Increment the stored buffer length by the
1451                    size passed */
1452                 priv->gen_ie_buf_len += ie_len;
1453         } else {
1454                 /* Passed data does not fit in the remaining
1455                    buffer space */
1456                 ret = -1;
1457         }
1458
1459         /* Return 0, or -1 for error case */
1460         return ret;
1461 }
1462
1463 /*
1464  * IOCTL request handler to set/get generic IE.
1465  *
1466  * In addition to various generic IEs, this function can also be
1467  * used to set the ARP filter.
1468  */
1469 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1470                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1471                                      u16 action)
1472 {
1473         struct mwifiex_adapter *adapter = priv->adapter;
1474
1475         switch (gen_ie->type) {
1476         case MWIFIEX_IE_TYPE_GEN_IE:
1477                 if (action == HostCmd_ACT_GEN_GET) {
1478                         gen_ie->len = priv->wpa_ie_len;
1479                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1480                 } else {
1481                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1482                                                   (u16) gen_ie->len);
1483                 }
1484                 break;
1485         case MWIFIEX_IE_TYPE_ARP_FILTER:
1486                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1487                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1488                         adapter->arp_filter_size = 0;
1489                         dev_err(adapter->dev, "invalid ARP filter size\n");
1490                         return -1;
1491                 } else {
1492                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1493                                gen_ie->len);
1494                         adapter->arp_filter_size = gen_ie->len;
1495                 }
1496                 break;
1497         default:
1498                 dev_err(adapter->dev, "invalid IE type\n");
1499                 return -1;
1500         }
1501         return 0;
1502 }
1503
1504 /*
1505  * Sends IOCTL request to set a generic IE.
1506  *
1507  * This function allocates the IOCTL request buffer, fills it
1508  * with requisite parameters and calls the IOCTL handler.
1509  */
1510 int
1511 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1512 {
1513         struct mwifiex_ds_misc_gen_ie gen_ie;
1514
1515         if (ie_len > IEEE_MAX_IE_SIZE)
1516                 return -EFAULT;
1517
1518         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1519         gen_ie.len = ie_len;
1520         memcpy(gen_ie.ie_data, ie, ie_len);
1521         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1522                 return -EFAULT;
1523
1524         return 0;
1525 }