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