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         struct cmd_ctrl_node *cmd_queued = adapter->cmd_queued;
  59
  60         adapter->cmd_queued = NULL;
  61         dev_dbg(adapter->dev, "cmd pending\n");
  62         atomic_inc(&adapter->cmd_pending);
  63
  64         /* Status pending, wake up main process */
  65         queue_work(adapter->workqueue, &adapter->main_work);
  66
  67         /* Wait for completion */
  68         wait_event_interruptible(adapter->cmd_wait_q.wait,
  69                                         *(cmd_queued->condition));
  70         if (!*(cmd_queued->condition))
  71                 cancel_flag = true;
  72
  73         if (cancel_flag) {
  74                 mwifiex_cancel_pending_ioctl(adapter);
  75                 dev_dbg(adapter->dev, "cmd cancel\n");
  76         }
  77         adapter->cmd_wait_q.status = 0;
  78
  79         return status;
  80 }
  81
  82 /*
  83  * This function prepares the correct firmware command and
  84  * issues it to set the multicast list.
  85  *
  86  * This function can be used to enable promiscuous mode, or enable all
  87  * multicast packets, or to enable selective multicast.
  88  */
  89 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  90                                 struct mwifiex_multicast_list *mcast_list)
  91 {
  92         int ret = 0;
  93         u16 old_pkt_filter;
  94
  95         old_pkt_filter = priv->curr_pkt_filter;
  96
  97         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
  98                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
  99                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 100                 priv->curr_pkt_filter &=
 101                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 102         } else {
 103                 /* Multicast */
 104                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 105                 if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
 106                         dev_dbg(priv->adapter->dev,
 107                                 "info: Enabling All Multicast!\n");
 108                         priv->curr_pkt_filter |=
 109                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 110                 } else {
 111                         priv->curr_pkt_filter &=
 112                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 113                         if (mcast_list->num_multicast_addr) {
 114                                 dev_dbg(priv->adapter->dev,
 115                                         "info: Set multicast list=%d\n",
 116                                        mcast_list->num_multicast_addr);
 117                                 /* Set multicast addresses to firmware */
 118                                 if (old_pkt_filter == priv->curr_pkt_filter) {
 119                                         /* Send request to firmware */
 120                                         ret = mwifiex_send_cmd_async(priv,
 121                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 122                                                 HostCmd_ACT_GEN_SET, 0,
 123                                                 mcast_list);
 124                                 } else {
 125                                         /* Send request to firmware */
 126                                         ret = mwifiex_send_cmd_async(priv,
 127                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 128                                                 HostCmd_ACT_GEN_SET, 0,
 129                                                 mcast_list);
 130                                 }
 131                         }
 132                 }
 133         }
 134         dev_dbg(priv->adapter->dev,
 135                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 136                old_pkt_filter, priv->curr_pkt_filter);
 137         if (old_pkt_filter != priv->curr_pkt_filter) {
 138                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 139                                              HostCmd_ACT_GEN_SET,
 140                                              0, &priv->curr_pkt_filter);
 141         }
 142
 143         return ret;
 144 }
 145
 146 /*
 147  * This function fills bss descriptor structure using provided
 148  * information.
 149  */
 150 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 151                               u8 *bssid, s32 rssi, u8 *ie_buf,
 152                               size_t ie_len, u16 beacon_period,
 153                               u16 cap_info_bitmap, u8 band,
 154                               struct mwifiex_bssdescriptor *bss_desc)
 155 {
 156         int ret;
 157
 158         memcpy(bss_desc->mac_address, bssid, ETH_ALEN);
 159         bss_desc->rssi = rssi;
 160         bss_desc->beacon_buf = ie_buf;
 161         bss_desc->beacon_buf_size = ie_len;
 162         bss_desc->beacon_period = beacon_period;
 163         bss_desc->cap_info_bitmap = cap_info_bitmap;
 164         bss_desc->bss_band = band;
 165         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 166                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 167                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 168         } else {
 169                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 170         }
 171         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 172                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 173         else
 174                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 175
 176         ret = mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc,
 177                                               ie_buf, ie_len);
 178
 179         return ret;
 180 }
 181
 182 /*
 183  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 184  * In both Ad-Hoc and infra mode, an deauthentication is performed
 185  * first.
 186  */
 187 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 188                       struct mwifiex_802_11_ssid *req_ssid)
 189 {
 190         int ret;
 191         struct mwifiex_adapter *adapter = priv->adapter;
 192         struct mwifiex_bssdescriptor *bss_desc = NULL;
 193         u8 *beacon_ie = NULL;
 194
 195         priv->scan_block = false;
 196
 197         if (bss) {
 198                 /* Allocate and fill new bss descriptor */
 199                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 200                                 GFP_KERNEL);
 201                 if (!bss_desc) {
 202                         dev_err(priv->adapter->dev, " failed to alloc bss_desc\n");
 203                         return -ENOMEM;
 204                 }
 205
 206                 beacon_ie = kmemdup(bss->information_elements,
 207                                         bss->len_beacon_ies, GFP_KERNEL);
 208                 if (!beacon_ie) {
 209                         kfree(bss_desc);
 210                         dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 211                         return -ENOMEM;
 212                 }
 213
 214                 ret = mwifiex_fill_new_bss_desc(priv, bss->bssid, bss->signal,
 215                                                 beacon_ie, bss->len_beacon_ies,
 216                                                 bss->beacon_interval,
 217                                                 bss->capability,
 218                                                 *(u8 *)bss->priv, bss_desc);
 219                 if (ret)
 220                         goto done;
 221         }
 222
 223         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 224                 /* Infra mode */
 225                 ret = mwifiex_deauthenticate(priv, NULL);
 226                 if (ret)
 227                         goto done;
 228
 229                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 230                 if (ret)
 231                         goto done;
 232
 233                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 234                                       "associating...\n");
 235
 236                 if (!netif_queue_stopped(priv->netdev))
 237                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 238
 239                 /* Clear any past association response stored for
 240                  * application retrieval */
 241                 priv->assoc_rsp_size = 0;
 242                 ret = mwifiex_associate(priv, bss_desc);
 243                 if (bss)
 244                         cfg80211_put_bss(bss);
 245         } else {
 246                 /* Adhoc mode */
 247                 /* If the requested SSID matches current SSID, return */
 248                 if (bss_desc && bss_desc->ssid.ssid_len &&
 249                     (!mwifiex_ssid_cmp
 250                      (&priv->curr_bss_params.bss_descriptor.ssid,
 251                       &bss_desc->ssid))) {
 252                         kfree(bss_desc);
 253                         kfree(beacon_ie);
 254                         return 0;
 255                 }
 256
 257                 /* Exit Adhoc mode first */
 258                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 259                 ret = mwifiex_deauthenticate(priv, NULL);
 260                 if (ret)
 261                         goto done;
 262
 263                 priv->adhoc_is_link_sensed = false;
 264
 265                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 266
 267                 if (!netif_queue_stopped(priv->netdev))
 268                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 269
 270                 if (!ret) {
 271                         dev_dbg(adapter->dev, "info: network found in scan"
 272                                                         " list. Joining...\n");
 273                         ret = mwifiex_adhoc_join(priv, bss_desc);
 274                         if (bss)
 275                                 cfg80211_put_bss(bss);
 276                 } else {
 277                         dev_dbg(adapter->dev, "info: Network not found in "
 278                                 "the list, creating adhoc with ssid = %s\n",
 279                                 req_ssid->ssid);
 280                         ret = mwifiex_adhoc_start(priv, req_ssid);
 281                 }
 282         }
 283
 284 done:
 285         kfree(bss_desc);
 286         kfree(beacon_ie);
 287         return ret;
 288 }
 289
 290 /*
 291  * IOCTL request handler to set host sleep configuration.
 292  *
 293  * This function prepares the correct firmware command and
 294  * issues it.
 295  */
 296 static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 297                                  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 298
 299 {
 300         struct mwifiex_adapter *adapter = priv->adapter;
 301         int status = 0;
 302         u32 prev_cond = 0;
 303
 304         if (!hs_cfg)
 305                 return -ENOMEM;
 306
 307         switch (action) {
 308         case HostCmd_ACT_GEN_SET:
 309                 if (adapter->pps_uapsd_mode) {
 310                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 311                                 " is blocked in UAPSD/PPS mode\n");
 312                         status = -1;
 313                         break;
 314                 }
 315                 if (hs_cfg->is_invoke_hostcmd) {
 316                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
 317                                 if (!adapter->is_hs_configured)
 318                                         /* Already cancelled */
 319                                         break;
 320                                 /* Save previous condition */
 321                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 322                                                         .conditions);
 323                                 adapter->hs_cfg.conditions =
 324                                                 cpu_to_le32(hs_cfg->conditions);
 325                         } else if (hs_cfg->conditions) {
 326                                 adapter->hs_cfg.conditions =
 327                                                 cpu_to_le32(hs_cfg->conditions);
 328                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 329                                 if (hs_cfg->gap)
 330                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 331                         } else if (adapter->hs_cfg.conditions ==
 332                                                 cpu_to_le32(
 333                                                 HOST_SLEEP_CFG_CANCEL)) {
 334                                 /* Return failure if no parameters for HS
 335                                    enable */
 336                                 status = -1;
 337                                 break;
 338                         }
 339                         if (cmd_type == MWIFIEX_SYNC_CMD)
 340                                 status = mwifiex_send_cmd_sync(priv,
 341                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 342                                                 HostCmd_ACT_GEN_SET, 0,
 343                                                 &adapter->hs_cfg);
 344                         else
 345                                 status = mwifiex_send_cmd_async(priv,
 346                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 347                                                 HostCmd_ACT_GEN_SET, 0,
 348                                                 &adapter->hs_cfg);
 349                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
 350                                 /* Restore previous condition */
 351                                 adapter->hs_cfg.conditions =
 352                                                 cpu_to_le32(prev_cond);
 353                 } else {
 354                         adapter->hs_cfg.conditions =
 355                                 cpu_to_le32(hs_cfg->conditions);
 356                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 357                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 358                 }
 359                 break;
 360         case HostCmd_ACT_GEN_GET:
 361                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 362                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 363                 hs_cfg->gap = adapter->hs_cfg.gap;
 364                 break;
 365         default:
 366                 status = -1;
 367                 break;
 368         }
 369
 370         return status;
 371 }
 372
 373 /*
 374  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 375  *
 376  * This function allocates the IOCTL request buffer, fills it
 377  * with requisite parameters and calls the IOCTL handler.
 378  */
 379 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 380 {
 381         struct mwifiex_ds_hs_cfg hscfg;
 382
 383         hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
 384         hscfg.is_invoke_hostcmd = true;
 385
 386         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 387                                     cmd_type, &hscfg);
 388 }
 389 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 390
 391 /*
 392  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 393  *
 394  * This function allocates the IOCTL request buffer, fills it
 395  * with requisite parameters and calls the IOCTL handler.
 396  */
 397 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 398 {
 399         struct mwifiex_ds_hs_cfg hscfg;
 400
 401         if (adapter->hs_activated) {
 402                 dev_dbg(adapter->dev, "cmd: HS Already actived\n");
 403                 return true;
 404         }
 405
 406         adapter->hs_activate_wait_q_woken = false;
 407
 408         memset(&hscfg, 0, sizeof(struct mwifiex_hs_config_param));
 409         hscfg.is_invoke_hostcmd = true;
 410
 411         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 412                                                        MWIFIEX_BSS_ROLE_STA),
 413                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 414                                   &hscfg)) {
 415                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 416                 return false;
 417         }
 418
 419         wait_event_interruptible(adapter->hs_activate_wait_q,
 420                         adapter->hs_activate_wait_q_woken);
 421
 422         return true;
 423 }
 424 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 425
 426 /*
 427  * IOCTL request handler to get BSS information.
 428  *
 429  * This function collates the information from different driver structures
 430  * to send to the user.
 431  */
 432 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 433                          struct mwifiex_bss_info *info)
 434 {
 435         struct mwifiex_adapter *adapter = priv->adapter;
 436         struct mwifiex_bssdescriptor *bss_desc;
 437
 438         if (!info)
 439                 return -1;
 440
 441         bss_desc = &priv->curr_bss_params.bss_descriptor;
 442
 443         info->bss_mode = priv->bss_mode;
 444
 445         memcpy(&info->ssid, &bss_desc->ssid,
 446                sizeof(struct mwifiex_802_11_ssid));
 447
 448         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 449
 450         info->bss_chan = bss_desc->channel;
 451
 452         info->region_code = adapter->region_code;
 453
 454         info->media_connected = priv->media_connected;
 455
 456         info->max_power_level = priv->max_tx_power_level;
 457         info->min_power_level = priv->min_tx_power_level;
 458
 459         info->adhoc_state = priv->adhoc_state;
 460
 461         info->bcn_nf_last = priv->bcn_nf_last;
 462
 463         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 464                 info->wep_status = true;
 465         else
 466                 info->wep_status = false;
 467
 468         info->is_hs_configured = adapter->is_hs_configured;
 469         info->is_deep_sleep = adapter->is_deep_sleep;
 470
 471         return 0;
 472 }
 473
 474 /*
 475  * The function sets band configurations.
 476  *
 477  * it performs extra checks to make sure the Ad-Hoc
 478  * band and channel are compatible. Otherwise it returns an error.
 479  *
 480  */
 481 int mwifiex_set_radio_band_cfg(struct mwifiex_private *priv,
 482                                struct mwifiex_ds_band_cfg *radio_cfg)
 483 {
 484         struct mwifiex_adapter *adapter = priv->adapter;
 485         u8 infra_band, adhoc_band;
 486         u32 adhoc_channel;
 487
 488         infra_band = (u8) radio_cfg->config_bands;
 489         adhoc_band = (u8) radio_cfg->adhoc_start_band;
 490         adhoc_channel = radio_cfg->adhoc_channel;
 491
 492         /* SET Infra band */
 493         if ((infra_band | adapter->fw_bands) & ~adapter->fw_bands)
 494                 return -1;
 495
 496         adapter->config_bands = infra_band;
 497
 498         /* SET Ad-hoc Band */
 499         if ((adhoc_band | adapter->fw_bands) & ~adapter->fw_bands)
 500                 return -1;
 501
 502         if (adhoc_band)
 503                 adapter->adhoc_start_band = adhoc_band;
 504         adapter->chan_offset = (u8) radio_cfg->sec_chan_offset;
 505         /*
 506          * If no adhoc_channel is supplied verify if the existing adhoc
 507          * channel compiles with new adhoc_band
 508          */
 509         if (!adhoc_channel) {
 510                 if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 511                      (priv, adapter->adhoc_start_band,
 512                      priv->adhoc_channel)) {
 513                         /* Pass back the default channel */
 514                         radio_cfg->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
 515                         if ((adapter->adhoc_start_band & BAND_A)
 516                             || (adapter->adhoc_start_band & BAND_AN))
 517                                 radio_cfg->adhoc_channel =
 518                                         DEFAULT_AD_HOC_CHANNEL_A;
 519                 }
 520         } else {        /* Retrurn error if adhoc_band and
 521                            adhoc_channel combination is invalid */
 522                 if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 523                     (priv, adapter->adhoc_start_band, (u16) adhoc_channel))
 524                         return -1;
 525                 priv->adhoc_channel = (u8) adhoc_channel;
 526         }
 527         if ((adhoc_band & BAND_GN) || (adhoc_band & BAND_AN))
 528                 adapter->adhoc_11n_enabled = true;
 529         else
 530                 adapter->adhoc_11n_enabled = false;
 531
 532         return 0;
 533 }
 534
 535 /*
 536  * The function disables auto deep sleep mode.
 537  */
 538 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 539 {
 540         struct mwifiex_ds_auto_ds auto_ds;
 541
 542         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 543
 544         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 545                                      DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
 546 }
 547 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 548
 549 /*
 550  * IOCTL request handler to set/get active channel.
 551  *
 552  * This function performs validity checking on channel/frequency
 553  * compatibility and returns failure if not valid.
 554  */
 555 int mwifiex_bss_set_channel(struct mwifiex_private *priv,
 556                             struct mwifiex_chan_freq_power *chan)
 557 {
 558         struct mwifiex_adapter *adapter = priv->adapter;
 559         struct mwifiex_chan_freq_power *cfp = NULL;
 560
 561         if (!chan)
 562                 return -1;
 563
 564         if (!chan->channel && !chan->freq)
 565                 return -1;
 566         if (adapter->adhoc_start_band & BAND_AN)
 567                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
 568         else if (adapter->adhoc_start_band & BAND_A)
 569                 adapter->adhoc_start_band = BAND_G | BAND_B;
 570         if (chan->channel) {
 571                 if (chan->channel <= MAX_CHANNEL_BAND_BG)
 572                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 573                                         (priv, 0, (u16) chan->channel);
 574                 if (!cfp) {
 575                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 576                                         (priv, BAND_A, (u16) chan->channel);
 577                         if (cfp) {
 578                                 if (adapter->adhoc_11n_enabled)
 579                                         adapter->adhoc_start_band = BAND_A
 580                                                 | BAND_AN;
 581                                 else
 582                                         adapter->adhoc_start_band = BAND_A;
 583                         }
 584                 }
 585         } else {
 586                 if (chan->freq <= MAX_FREQUENCY_BAND_BG)
 587                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211(
 588                                                         priv, 0, chan->freq);
 589                 if (!cfp) {
 590                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211
 591                                                   (priv, BAND_A, chan->freq);
 592                         if (cfp) {
 593                                 if (adapter->adhoc_11n_enabled)
 594                                         adapter->adhoc_start_band = BAND_A
 595                                                 | BAND_AN;
 596                                 else
 597                                         adapter->adhoc_start_band = BAND_A;
 598                         }
 599                 }
 600         }
 601         if (!cfp || !cfp->channel) {
 602                 dev_err(adapter->dev, "invalid channel/freq\n");
 603                 return -1;
 604         }
 605         priv->adhoc_channel = (u8) cfp->channel;
 606         chan->channel = cfp->channel;
 607         chan->freq = cfp->freq;
 608
 609         return 0;
 610 }
 611
 612 /*
 613  * IOCTL request handler to set/get Ad-Hoc channel.
 614  *
 615  * This function prepares the correct firmware command and
 616  * issues it to set or get the ad-hoc channel.
 617  */
 618 static int mwifiex_bss_ioctl_ibss_channel(struct mwifiex_private *priv,
 619                                           u16 action, u16 *channel)
 620 {
 621         if (action == HostCmd_ACT_GEN_GET) {
 622                 if (!priv->media_connected) {
 623                         *channel = priv->adhoc_channel;
 624                         return 0;
 625                 }
 626         } else {
 627                 priv->adhoc_channel = (u8) *channel;
 628         }
 629
 630         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_RF_CHANNEL,
 631                                     action, 0, channel);
 632 }
 633
 634 /*
 635  * IOCTL request handler to change Ad-Hoc channel.
 636  *
 637  * This function allocates the IOCTL request buffer, fills it
 638  * with requisite parameters and calls the IOCTL handler.
 639  *
 640  * The function follows the following steps to perform the change -
 641  *      - Get current IBSS information
 642  *      - Get current channel
 643  *      - If no change is required, return
 644  *      - If not connected, change channel and return
 645  *      - If connected,
 646  *          - Disconnect
 647  *          - Change channel
 648  *          - Perform specific SSID scan with same SSID
 649  *          - Start/Join the IBSS
 650  */
 651 int
 652 mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, int channel)
 653 {
 654         int ret;
 655         struct mwifiex_bss_info bss_info;
 656         struct mwifiex_ssid_bssid ssid_bssid;
 657         u16 curr_chan = 0;
 658         struct cfg80211_bss *bss = NULL;
 659         struct ieee80211_channel *chan;
 660         enum ieee80211_band band;
 661
 662         memset(&bss_info, 0, sizeof(bss_info));
 663
 664         /* Get BSS information */
 665         if (mwifiex_get_bss_info(priv, &bss_info))
 666                 return -1;
 667
 668         /* Get current channel */
 669         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
 670                                              &curr_chan);
 671
 672         if (curr_chan == channel) {
 673                 ret = 0;
 674                 goto done;
 675         }
 676         dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
 677                         curr_chan, channel);
 678
 679         if (!bss_info.media_connected) {
 680                 ret = 0;
 681                 goto done;
 682         }
 683
 684         /* Do disonnect */
 685         memset(&ssid_bssid, 0, ETH_ALEN);
 686         ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
 687
 688         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
 689                                              (u16 *) &channel);
 690
 691         /* Do specific SSID scanning */
 692         if (mwifiex_request_scan(priv, &bss_info.ssid)) {
 693                 ret = -1;
 694                 goto done;
 695         }
 696
 697         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 698         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 699                         ieee80211_channel_to_frequency(channel, band));
 700
 701         /* Find the BSS we want using available scan results */
 702         bss = cfg80211_get_bss(priv->wdev->wiphy, chan, bss_info.bssid,
 703                                bss_info.ssid.ssid, bss_info.ssid.ssid_len,
 704                                WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 705         if (!bss)
 706                 wiphy_warn(priv->wdev->wiphy, "assoc: bss %pM not in scan results\n",
 707                           bss_info.bssid);
 708
 709         ret = mwifiex_bss_start(priv, bss, &bss_info.ssid);
 710 done:
 711         return ret;
 712 }
 713
 714 /*
 715  * IOCTL request handler to get rate.
 716  *
 717  * This function prepares the correct firmware command and
 718  * issues it to get the current rate if it is connected,
 719  * otherwise, the function returns the lowest supported rate
 720  * for the band.
 721  */
 722 static int mwifiex_rate_ioctl_get_rate_value(struct mwifiex_private *priv,
 723                                              struct mwifiex_rate_cfg *rate_cfg)
 724 {
 725         rate_cfg->is_rate_auto = priv->is_data_rate_auto;
 726         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 727                                      HostCmd_ACT_GEN_GET, 0, NULL);
 728 }
 729
 730 /*
 731  * IOCTL request handler to set rate.
 732  *
 733  * This function prepares the correct firmware command and
 734  * issues it to set the current rate.
 735  *
 736  * The function also performs validation checking on the supplied value.
 737  */
 738 static int mwifiex_rate_ioctl_set_rate_value(struct mwifiex_private *priv,
 739                                              struct mwifiex_rate_cfg *rate_cfg)
 740 {
 741         u8 rates[MWIFIEX_SUPPORTED_RATES];
 742         u8 *rate;
 743         int rate_index, ret;
 744         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
 745         u32 i;
 746         struct mwifiex_adapter *adapter = priv->adapter;
 747
 748         if (rate_cfg->is_rate_auto) {
 749                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 750                 /* Support all HR/DSSS rates */
 751                 bitmap_rates[0] = 0x000F;
 752                 /* Support all OFDM rates */
 753                 bitmap_rates[1] = 0x00FF;
 754                 /* Support all HT-MCSs rate */
 755                 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates) - 3; i++)
 756                         bitmap_rates[i + 2] = 0xFFFF;
 757                 bitmap_rates[9] = 0x3FFF;
 758         } else {
 759                 memset(rates, 0, sizeof(rates));
 760                 mwifiex_get_active_data_rates(priv, rates);
 761                 rate = rates;
 762                 for (i = 0; (rate[i] && i < MWIFIEX_SUPPORTED_RATES); i++) {
 763                         dev_dbg(adapter->dev, "info: rate=%#x wanted=%#x\n",
 764                                 rate[i], rate_cfg->rate);
 765                         if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
 766                                 break;
 767                 }
 768                 if ((i == MWIFIEX_SUPPORTED_RATES) || !rate[i]) {
 769                         dev_err(adapter->dev, "fixed data rate %#x is out "
 770                                "of range\n", rate_cfg->rate);
 771                         return -1;
 772                 }
 773                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 774
 775                 rate_index = mwifiex_data_rate_to_index(rate_cfg->rate);
 776
 777                 /* Only allow b/g rates to be set */
 778                 if (rate_index >= MWIFIEX_RATE_INDEX_HRDSSS0 &&
 779                     rate_index <= MWIFIEX_RATE_INDEX_HRDSSS3) {
 780                         bitmap_rates[0] = 1 << rate_index;
 781                 } else {
 782                         rate_index -= 1; /* There is a 0x00 in the table */
 783                         if (rate_index >= MWIFIEX_RATE_INDEX_OFDM0 &&
 784                             rate_index <= MWIFIEX_RATE_INDEX_OFDM7)
 785                                 bitmap_rates[1] = 1 << (rate_index -
 786                                                    MWIFIEX_RATE_INDEX_OFDM0);
 787                 }
 788         }
 789
 790         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
 791                                     HostCmd_ACT_GEN_SET, 0, bitmap_rates);
 792
 793         return ret;
 794 }
 795
 796 /*
 797  * IOCTL request handler to set/get rate.
 798  *
 799  * This function can be used to set/get either the rate value or the
 800  * rate index.
 801  */
 802 static int mwifiex_rate_ioctl_cfg(struct mwifiex_private *priv,
 803                                   struct mwifiex_rate_cfg *rate_cfg)
 804 {
 805         int status;
 806
 807         if (!rate_cfg)
 808                 return -1;
 809
 810         if (rate_cfg->action == HostCmd_ACT_GEN_GET)
 811                 status = mwifiex_rate_ioctl_get_rate_value(priv, rate_cfg);
 812         else
 813                 status = mwifiex_rate_ioctl_set_rate_value(priv, rate_cfg);
 814
 815         return status;
 816 }
 817
 818 /*
 819  * Sends IOCTL request to get the data rate.
 820  *
 821  * This function allocates the IOCTL request buffer, fills it
 822  * with requisite parameters and calls the IOCTL handler.
 823  */
 824 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,
 825                               struct mwifiex_rate_cfg *rate)
 826 {
 827         int ret;
 828
 829         memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
 830         rate->action = HostCmd_ACT_GEN_GET;
 831         ret = mwifiex_rate_ioctl_cfg(priv, rate);
 832
 833         if (!ret) {
 834                 if (rate->is_rate_auto)
 835                         rate->rate = mwifiex_index_to_data_rate(priv,
 836                                         priv->tx_rate, priv->tx_htinfo);
 837                 else
 838                         rate->rate = priv->data_rate;
 839         } else {
 840                 ret = -1;
 841         }
 842
 843         return ret;
 844 }
 845
 846 /*
 847  * IOCTL request handler to set tx power configuration.
 848  *
 849  * This function prepares the correct firmware command and
 850  * issues it.
 851  *
 852  * For non-auto power mode, all the following power groups are set -
 853  *      - Modulation class HR/DSSS
 854  *      - Modulation class OFDM
 855  *      - Modulation class HTBW20
 856  *      - Modulation class HTBW40
 857  */
 858 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 859                          struct mwifiex_power_cfg *power_cfg)
 860 {
 861         int ret;
 862         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 863         struct mwifiex_types_power_group *pg_tlv;
 864         struct mwifiex_power_group *pg;
 865         u8 *buf;
 866         u16 dbm = 0;
 867
 868         if (!power_cfg->is_power_auto) {
 869                 dbm = (u16) power_cfg->power_level;
 870                 if ((dbm < priv->min_tx_power_level) ||
 871                     (dbm > priv->max_tx_power_level)) {
 872                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 873                                         " is out of range (%d dBm-%d dBm)\n",
 874                                         dbm, priv->min_tx_power_level,
 875                                         priv->max_tx_power_level);
 876                         return -1;
 877                 }
 878         }
 879         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 880         if (!buf) {
 881                 dev_err(priv->adapter->dev, "%s: failed to alloc cmd buffer\n",
 882                                 __func__);
 883                 return -ENOMEM;
 884         }
 885
 886         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 887         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 888         if (!power_cfg->is_power_auto) {
 889                 txp_cfg->mode = cpu_to_le32(1);
 890                 pg_tlv = (struct mwifiex_types_power_group *) (buf +
 891                                 sizeof(struct host_cmd_ds_txpwr_cfg));
 892                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 893                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 894                 pg = (struct mwifiex_power_group *) (buf +
 895                                 sizeof(struct host_cmd_ds_txpwr_cfg) +
 896                                 sizeof(struct mwifiex_types_power_group));
 897                 /* Power group for modulation class HR/DSSS */
 898                 pg->first_rate_code = 0x00;
 899                 pg->last_rate_code = 0x03;
 900                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 901                 pg->power_step = 0;
 902                 pg->power_min = (s8) dbm;
 903                 pg->power_max = (s8) dbm;
 904                 pg++;
 905                 /* Power group for modulation class OFDM */
 906                 pg->first_rate_code = 0x00;
 907                 pg->last_rate_code = 0x07;
 908                 pg->modulation_class = MOD_CLASS_OFDM;
 909                 pg->power_step = 0;
 910                 pg->power_min = (s8) dbm;
 911                 pg->power_max = (s8) dbm;
 912                 pg++;
 913                 /* Power group for modulation class HTBW20 */
 914                 pg->first_rate_code = 0x00;
 915                 pg->last_rate_code = 0x20;
 916                 pg->modulation_class = MOD_CLASS_HT;
 917                 pg->power_step = 0;
 918                 pg->power_min = (s8) dbm;
 919                 pg->power_max = (s8) dbm;
 920                 pg->ht_bandwidth = HT_BW_20;
 921                 pg++;
 922                 /* Power group for modulation class HTBW40 */
 923                 pg->first_rate_code = 0x00;
 924                 pg->last_rate_code = 0x20;
 925                 pg->modulation_class = MOD_CLASS_HT;
 926                 pg->power_step = 0;
 927                 pg->power_min = (s8) dbm;
 928                 pg->power_max = (s8) dbm;
 929                 pg->ht_bandwidth = HT_BW_40;
 930         }
 931         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 932                                     HostCmd_ACT_GEN_SET, 0, buf);
 933
 934         kfree(buf);
 935         return ret;
 936 }
 937
 938 /*
 939  * IOCTL request handler to get power save mode.
 940  *
 941  * This function prepares the correct firmware command and
 942  * issues it.
 943  */
 944 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 945 {
 946         int ret;
 947         struct mwifiex_adapter *adapter = priv->adapter;
 948         u16 sub_cmd;
 949
 950         if (*ps_mode)
 951                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 952         else
 953                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 954         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 955         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 956                                     sub_cmd, BITMAP_STA_PS, NULL);
 957         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 958                 ret = mwifiex_send_cmd_async(priv,
 959                                 HostCmd_CMD_802_11_PS_MODE_ENH, GET_PS,
 960                                 0, NULL);
 961
 962         return ret;
 963 }
 964
 965 /*
 966  * IOCTL request handler to set/reset WPA IE.
 967  *
 968  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 969  * is checked to determine WPA version. If buffer length is zero, the existing
 970  * WPA IE is reset.
 971  */
 972 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 973                                      u8 *ie_data_ptr, u16 ie_len)
 974 {
 975         if (ie_len) {
 976                 if (ie_len > sizeof(priv->wpa_ie)) {
 977                         dev_err(priv->adapter->dev,
 978                                 "failed to copy WPA IE, too big\n");
 979                         return -1;
 980                 }
 981                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 982                 priv->wpa_ie_len = (u8) ie_len;
 983                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 984                                 priv->wpa_ie_len, priv->wpa_ie[0]);
 985
 986                 if (priv->wpa_ie[0] == WLAN_EID_WPA) {
 987                         priv->sec_info.wpa_enabled = true;
 988                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 989                         priv->sec_info.wpa2_enabled = true;
 990                 } else {
 991                         priv->sec_info.wpa_enabled = false;
 992                         priv->sec_info.wpa2_enabled = false;
 993                 }
 994         } else {
 995                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 996                 priv->wpa_ie_len = 0;
 997                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 998                         priv->wpa_ie_len, priv->wpa_ie[0]);
 999                 priv->sec_info.wpa_enabled = false;
1000                 priv->sec_info.wpa2_enabled = false;
1001         }
1002
1003         return 0;
1004 }
1005
1006 /*
1007  * IOCTL request handler to set/reset WAPI IE.
1008  *
1009  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
1010  * is checked to internally enable WAPI. If buffer length is zero, the existing
1011  * WAPI IE is reset.
1012  */
1013 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
1014                                u8 *ie_data_ptr, u16 ie_len)
1015 {
1016         if (ie_len) {
1017                 if (ie_len > sizeof(priv->wapi_ie)) {
1018                         dev_dbg(priv->adapter->dev,
1019                                 "info: failed to copy WAPI IE, too big\n");
1020                         return -1;
1021                 }
1022                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
1023                 priv->wapi_ie_len = ie_len;
1024                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
1025                                 priv->wapi_ie_len, priv->wapi_ie[0]);
1026
1027                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
1028                         priv->sec_info.wapi_enabled = true;
1029         } else {
1030                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
1031                 priv->wapi_ie_len = ie_len;
1032                 dev_dbg(priv->adapter->dev,
1033                         "info: Reset wapi_ie_len=%d IE=%#x\n",
1034                        priv->wapi_ie_len, priv->wapi_ie[0]);
1035                 priv->sec_info.wapi_enabled = false;
1036         }
1037         return 0;
1038 }
1039
1040 /*
1041  * IOCTL request handler to set WAPI key.
1042  *
1043  * This function prepares the correct firmware command and
1044  * issues it.
1045  */
1046 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
1047                                struct mwifiex_ds_encrypt_key *encrypt_key)
1048 {
1049
1050         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
1051                                     HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1052                                     encrypt_key);
1053 }
1054
1055 /*
1056  * IOCTL request handler to set WEP network key.
1057  *
1058  * This function prepares the correct firmware command and
1059  * issues it, after validation checks.
1060  */
1061 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
1062                               struct mwifiex_ds_encrypt_key *encrypt_key)
1063 {
1064         int ret;
1065         struct mwifiex_wep_key *wep_key;
1066         int index;
1067
1068         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
1069                 priv->wep_key_curr_index = 0;
1070         wep_key = &priv->wep_key[priv->wep_key_curr_index];
1071         index = encrypt_key->key_index;
1072         if (encrypt_key->key_disable) {
1073                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_DISABLED;
1074         } else if (!encrypt_key->key_len) {
1075                 /* Copy the required key as the current key */
1076                 wep_key = &priv->wep_key[index];
1077                 if (!wep_key->key_length) {
1078                         dev_err(priv->adapter->dev,
1079                                 "key not set, so cannot enable it\n");
1080                         return -1;
1081                 }
1082                 priv->wep_key_curr_index = (u16) index;
1083                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1084         } else {
1085                 wep_key = &priv->wep_key[index];
1086                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
1087                 /* Copy the key in the driver */
1088                 memcpy(wep_key->key_material,
1089                        encrypt_key->key_material,
1090                        encrypt_key->key_len);
1091                 wep_key->key_index = index;
1092                 wep_key->key_length = encrypt_key->key_len;
1093                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1094         }
1095         if (wep_key->key_length) {
1096                 /* Send request to firmware */
1097                 ret = mwifiex_send_cmd_async(priv,
1098                                              HostCmd_CMD_802_11_KEY_MATERIAL,
1099                                              HostCmd_ACT_GEN_SET, 0, NULL);
1100                 if (ret)
1101                         return ret;
1102         }
1103         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
1104                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1105         else
1106                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1107
1108         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1109                                     HostCmd_ACT_GEN_SET, 0,
1110                                     &priv->curr_pkt_filter);
1111
1112         return ret;
1113 }
1114
1115 /*
1116  * IOCTL request handler to set WPA key.
1117  *
1118  * This function prepares the correct firmware command and
1119  * issues it, after validation checks.
1120  *
1121  * Current driver only supports key length of up to 32 bytes.
1122  *
1123  * This function can also be used to disable a currently set key.
1124  */
1125 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
1126                               struct mwifiex_ds_encrypt_key *encrypt_key)
1127 {
1128         int ret;
1129         u8 remove_key = false;
1130         struct host_cmd_ds_802_11_key_material *ibss_key;
1131
1132         /* Current driver only supports key length of up to 32 bytes */
1133         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
1134                 dev_err(priv->adapter->dev, "key length too long\n");
1135                 return -1;
1136         }
1137
1138         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1139                 /*
1140                  * IBSS/WPA-None uses only one key (Group) for both receiving
1141                  * and sending unicast and multicast packets.
1142                  */
1143                 /* Send the key as PTK to firmware */
1144                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1145                 ret = mwifiex_send_cmd_async(priv,
1146                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1147                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1148                                         encrypt_key);
1149                 if (ret)
1150                         return ret;
1151
1152                 ibss_key = &priv->aes_key;
1153                 memset(ibss_key, 0,
1154                        sizeof(struct host_cmd_ds_802_11_key_material));
1155                 /* Copy the key in the driver */
1156                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
1157                        encrypt_key->key_len);
1158                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
1159                        sizeof(ibss_key->key_param_set.key_len));
1160                 ibss_key->key_param_set.key_type_id
1161                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
1162                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
1163
1164                 /* Send the key as GTK to firmware */
1165                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
1166         }
1167
1168         if (!encrypt_key->key_index)
1169                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1170
1171         if (remove_key)
1172                 ret = mwifiex_send_cmd_sync(priv,
1173                                        HostCmd_CMD_802_11_KEY_MATERIAL,
1174                                        HostCmd_ACT_GEN_SET, !(KEY_INFO_ENABLED),
1175                                        encrypt_key);
1176         else
1177                 ret = mwifiex_send_cmd_sync(priv,
1178                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1179                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1180                                         encrypt_key);
1181
1182         return ret;
1183 }
1184
1185 /*
1186  * IOCTL request handler to set/get network keys.
1187  *
1188  * This is a generic key handling function which supports WEP, WPA
1189  * and WAPI.
1190  */
1191 static int
1192 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1193                               struct mwifiex_ds_encrypt_key *encrypt_key)
1194 {
1195         int status;
1196
1197         if (encrypt_key->is_wapi_key)
1198                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1199         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1200                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1201         else
1202                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1203         return status;
1204 }
1205
1206 /*
1207  * This function returns the driver version.
1208  */
1209 int
1210 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1211                                int max_len)
1212 {
1213         union {
1214                 u32 l;
1215                 u8 c[4];
1216         } ver;
1217         char fw_ver[32];
1218
1219         ver.l = adapter->fw_release_number;
1220         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1221
1222         snprintf(version, max_len, driver_version, fw_ver);
1223
1224         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1225
1226         return 0;
1227 }
1228
1229 /*
1230  * Sends IOCTL request to get signal information.
1231  *
1232  * This function allocates the IOCTL request buffer, fills it
1233  * with requisite parameters and calls the IOCTL handler.
1234  */
1235 int mwifiex_get_signal_info(struct mwifiex_private *priv,
1236                             struct mwifiex_ds_get_signal *signal)
1237 {
1238         int status;
1239
1240         signal->selector = ALL_RSSI_INFO_MASK;
1241
1242         /* Signal info can be obtained only if connected */
1243         if (!priv->media_connected) {
1244                 dev_dbg(priv->adapter->dev,
1245                         "info: Can not get signal in disconnected state\n");
1246                 return -1;
1247         }
1248
1249         status = mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
1250                                        HostCmd_ACT_GEN_GET, 0, signal);
1251
1252         if (!status) {
1253                 if (signal->selector & BCN_RSSI_AVG_MASK)
1254                         priv->qual_level = signal->bcn_rssi_avg;
1255                 if (signal->selector & BCN_NF_AVG_MASK)
1256                         priv->qual_noise = signal->bcn_nf_avg;
1257         }
1258
1259         return status;
1260 }
1261
1262 /*
1263  * Sends IOCTL request to set encoding parameters.
1264  *
1265  * This function allocates the IOCTL request buffer, fills it
1266  * with requisite parameters and calls the IOCTL handler.
1267  */
1268 int mwifiex_set_encode(struct mwifiex_private *priv, const u8 *key,
1269                         int key_len, u8 key_index, int disable)
1270 {
1271         struct mwifiex_ds_encrypt_key encrypt_key;
1272
1273         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1274         encrypt_key.key_len = key_len;
1275         if (!disable) {
1276                 encrypt_key.key_index = key_index;
1277                 if (key_len)
1278                         memcpy(encrypt_key.key_material, key, key_len);
1279         } else {
1280                 encrypt_key.key_disable = true;
1281         }
1282
1283         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1284 }
1285
1286 /*
1287  * Sends IOCTL request to get extended version.
1288  *
1289  * This function allocates the IOCTL request buffer, fills it
1290  * with requisite parameters and calls the IOCTL handler.
1291  */
1292 int
1293 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1294 {
1295         struct mwifiex_ver_ext ver_ext;
1296
1297         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1298         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1299                                     HostCmd_ACT_GEN_GET, 0, &ver_ext))
1300                 return -1;
1301
1302         return 0;
1303 }
1304
1305 /*
1306  * Sends IOCTL request to get statistics information.
1307  *
1308  * This function allocates the IOCTL request buffer, fills it
1309  * with requisite parameters and calls the IOCTL handler.
1310  */
1311 int
1312 mwifiex_get_stats_info(struct mwifiex_private *priv,
1313                        struct mwifiex_ds_get_stats *log)
1314 {
1315         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1316                                     HostCmd_ACT_GEN_GET, 0, log);
1317 }
1318
1319 /*
1320  * IOCTL request handler to read/write register.
1321  *
1322  * This function prepares the correct firmware command and
1323  * issues it.
1324  *
1325  * Access to the following registers are supported -
1326  *      - MAC
1327  *      - BBP
1328  *      - RF
1329  *      - PMIC
1330  *      - CAU
1331  */
1332 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1333                                         struct mwifiex_ds_reg_rw *reg_rw,
1334                                         u16 action)
1335 {
1336         u16 cmd_no;
1337
1338         switch (le32_to_cpu(reg_rw->type)) {
1339         case MWIFIEX_REG_MAC:
1340                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1341                 break;
1342         case MWIFIEX_REG_BBP:
1343                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1344                 break;
1345         case MWIFIEX_REG_RF:
1346                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1347                 break;
1348         case MWIFIEX_REG_PMIC:
1349                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1350                 break;
1351         case MWIFIEX_REG_CAU:
1352                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1353                 break;
1354         default:
1355                 return -1;
1356         }
1357
1358         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1359
1360 }
1361
1362 /*
1363  * Sends IOCTL request to write to a register.
1364  *
1365  * This function allocates the IOCTL request buffer, fills it
1366  * with requisite parameters and calls the IOCTL handler.
1367  */
1368 int
1369 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1370                   u32 reg_offset, u32 reg_value)
1371 {
1372         struct mwifiex_ds_reg_rw reg_rw;
1373
1374         reg_rw.type = cpu_to_le32(reg_type);
1375         reg_rw.offset = cpu_to_le32(reg_offset);
1376         reg_rw.value = cpu_to_le32(reg_value);
1377
1378         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1379 }
1380
1381 /*
1382  * Sends IOCTL request to read from a register.
1383  *
1384  * This function allocates the IOCTL request buffer, fills it
1385  * with requisite parameters and calls the IOCTL handler.
1386  */
1387 int
1388 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1389                  u32 reg_offset, u32 *value)
1390 {
1391         int ret;
1392         struct mwifiex_ds_reg_rw reg_rw;
1393
1394         reg_rw.type = cpu_to_le32(reg_type);
1395         reg_rw.offset = cpu_to_le32(reg_offset);
1396         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1397
1398         if (ret)
1399                 goto done;
1400
1401         *value = le32_to_cpu(reg_rw.value);
1402
1403 done:
1404         return ret;
1405 }
1406
1407 /*
1408  * Sends IOCTL request to read from EEPROM.
1409  *
1410  * This function allocates the IOCTL request buffer, fills it
1411  * with requisite parameters and calls the IOCTL handler.
1412  */
1413 int
1414 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1415                     u8 *value)
1416 {
1417         int ret;
1418         struct mwifiex_ds_read_eeprom rd_eeprom;
1419
1420         rd_eeprom.offset = cpu_to_le16((u16) offset);
1421         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1422
1423         /* Send request to firmware */
1424         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1425                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1426
1427         if (!ret)
1428                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1429         return ret;
1430 }
1431
1432 /*
1433  * This function sets a generic IE. In addition to generic IE, it can
1434  * also handle WPA, WPA2 and WAPI IEs.
1435  */
1436 static int
1437 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1438                           u16 ie_len)
1439 {
1440         int ret = 0;
1441         struct ieee_types_vendor_header *pvendor_ie;
1442         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1443         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1444
1445         /* If the passed length is zero, reset the buffer */
1446         if (!ie_len) {
1447                 priv->gen_ie_buf_len = 0;
1448                 priv->wps.session_enable = false;
1449
1450                 return 0;
1451         } else if (!ie_data_ptr) {
1452                 return -1;
1453         }
1454         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1455         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1456         if (((pvendor_ie->element_id == WLAN_EID_WPA)
1457              && (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui))))
1458                         || (pvendor_ie->element_id == WLAN_EID_RSN)) {
1459
1460                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1461                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1462                 priv->wps.session_enable = false;
1463
1464                 return ret;
1465         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1466                 /* IE is a WAPI IE so call set_wapi function */
1467                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1468
1469                 return ret;
1470         }
1471         /*
1472          * Verify that the passed length is not larger than the
1473          * available space remaining in the buffer
1474          */
1475         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1476
1477                 /* Test to see if it is a WPS IE, if so, enable
1478                  * wps session flag
1479                  */
1480                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1481                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC)
1482                                 && (!memcmp(pvendor_ie->oui, wps_oui,
1483                                                 sizeof(wps_oui)))) {
1484                         priv->wps.session_enable = true;
1485                         dev_dbg(priv->adapter->dev,
1486                                 "info: WPS Session Enabled.\n");
1487                 }
1488
1489                 /* Append the passed data to the end of the
1490                    genIeBuffer */
1491                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1492                                                                         ie_len);
1493                 /* Increment the stored buffer length by the
1494                    size passed */
1495                 priv->gen_ie_buf_len += ie_len;
1496         } else {
1497                 /* Passed data does not fit in the remaining
1498                    buffer space */
1499                 ret = -1;
1500         }
1501
1502         /* Return 0, or -1 for error case */
1503         return ret;
1504 }
1505
1506 /*
1507  * IOCTL request handler to set/get generic IE.
1508  *
1509  * In addition to various generic IEs, this function can also be
1510  * used to set the ARP filter.
1511  */
1512 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1513                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1514                                      u16 action)
1515 {
1516         struct mwifiex_adapter *adapter = priv->adapter;
1517
1518         switch (gen_ie->type) {
1519         case MWIFIEX_IE_TYPE_GEN_IE:
1520                 if (action == HostCmd_ACT_GEN_GET) {
1521                         gen_ie->len = priv->wpa_ie_len;
1522                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1523                 } else {
1524                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1525                                                   (u16) gen_ie->len);
1526                 }
1527                 break;
1528         case MWIFIEX_IE_TYPE_ARP_FILTER:
1529                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1530                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1531                         adapter->arp_filter_size = 0;
1532                         dev_err(adapter->dev, "invalid ARP filter size\n");
1533                         return -1;
1534                 } else {
1535                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1536                                                                 gen_ie->len);
1537                         adapter->arp_filter_size = gen_ie->len;
1538                 }
1539                 break;
1540         default:
1541                 dev_err(adapter->dev, "invalid IE type\n");
1542                 return -1;
1543         }
1544         return 0;
1545 }
1546
1547 /*
1548  * Sends IOCTL request to set a generic IE.
1549  *
1550  * This function allocates the IOCTL request buffer, fills it
1551  * with requisite parameters and calls the IOCTL handler.
1552  */
1553 int
1554 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1555 {
1556         struct mwifiex_ds_misc_gen_ie gen_ie;
1557
1558         if (ie_len > IEEE_MAX_IE_SIZE)
1559                 return -EFAULT;
1560
1561         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1562         gen_ie.len = ie_len;
1563         memcpy(gen_ie.ie_data, ie, ie_len);
1564         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1565                 return -EFAULT;
1566
1567         return 0;
1568 }