drivers/net/wireless/mwifiex/sta_ioctl.c

   1 /*
   2  * Marvell Wireless LAN device driver: functions for station ioctl
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "decl.h"
  21 #include "ioctl.h"
  22 #include "util.h"
  23 #include "fw.h"
  24 #include "main.h"
  25 #include "wmm.h"
  26 #include "11n.h"
  27 #include "cfg80211.h"
  28
  29 /*
  30  * Copies the multicast address list from device to driver.
  31  *
  32  * This function does not validate the destination memory for
  33  * size, and the calling function must ensure enough memory is
  34  * available.
  35  */
  36 int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
  37                             struct net_device *dev)
  38 {
  39         int i = 0;
  40         struct netdev_hw_addr *ha;
  41
  42         netdev_for_each_mc_addr(ha, dev)
  43                 memcpy(&mlist->mac_list[i++], ha->addr, ETH_ALEN);
  44
  45         return i;
  46 }
  47
  48 /*
  49  * Wait queue completion handler.
  50  *
  51  * This function waits on a cmd wait queue. It also cancels the pending
  52  * request after waking up, in case of errors.
  53  */
  54 int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
  55 {
  56         bool cancel_flag = false;
  57         int status = adapter->cmd_wait_q.status;
  58
  59         dev_dbg(adapter->dev, "cmd pending\n");
  60         atomic_inc(&adapter->cmd_pending);
  61
  62         /* Status pending, wake up main process */
  63         queue_work(adapter->workqueue, &adapter->main_work);
  64
  65         /* Wait for completion */
  66         wait_event_interruptible(adapter->cmd_wait_q.wait,
  67                                         adapter->cmd_wait_q.condition);
  68         if (!adapter->cmd_wait_q.condition)
  69                 cancel_flag = true;
  70
  71         if (cancel_flag) {
  72                 mwifiex_cancel_pending_ioctl(adapter);
  73                 dev_dbg(adapter->dev, "cmd cancel\n");
  74         }
  75         adapter->cmd_wait_q.status = 0;
  76
  77         return status;
  78 }
  79
  80 /*
  81  * This function prepares the correct firmware command and
  82  * issues it to set the multicast list.
  83  *
  84  * This function can be used to enable promiscuous mode, or enable all
  85  * multicast packets, or to enable selective multicast.
  86  */
  87 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  88                                 struct mwifiex_multicast_list *mcast_list)
  89 {
  90         int ret = 0;
  91         u16 old_pkt_filter;
  92
  93         old_pkt_filter = priv->curr_pkt_filter;
  94
  95         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
  96                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
  97                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
  98                 priv->curr_pkt_filter &=
  99                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 100         } else {
 101                 /* Multicast */
 102                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 103                 if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
 104                         dev_dbg(priv->adapter->dev,
 105                                 "info: Enabling All Multicast!\n");
 106                         priv->curr_pkt_filter |=
 107                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 108                 } else {
 109                         priv->curr_pkt_filter &=
 110                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 111                         if (mcast_list->num_multicast_addr) {
 112                                 dev_dbg(priv->adapter->dev,
 113                                         "info: Set multicast list=%d\n",
 114                                        mcast_list->num_multicast_addr);
 115                                 /* Set multicast addresses to firmware */
 116                                 if (old_pkt_filter == priv->curr_pkt_filter) {
 117                                         /* Send request to firmware */
 118                                         ret = mwifiex_send_cmd_async(priv,
 119                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 120                                                 HostCmd_ACT_GEN_SET, 0,
 121                                                 mcast_list);
 122                                 } else {
 123                                         /* Send request to firmware */
 124                                         ret = mwifiex_send_cmd_async(priv,
 125                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 126                                                 HostCmd_ACT_GEN_SET, 0,
 127                                                 mcast_list);
 128                                 }
 129                         }
 130                 }
 131         }
 132         dev_dbg(priv->adapter->dev,
 133                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 134                old_pkt_filter, priv->curr_pkt_filter);
 135         if (old_pkt_filter != priv->curr_pkt_filter) {
 136                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 137                                              HostCmd_ACT_GEN_SET,
 138                                              0, &priv->curr_pkt_filter);
 139         }
 140
 141         return ret;
 142 }
 143
 144 /*
 145  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 146  * In both Ad-Hoc and infra mode, an deauthentication is performed
 147  * first.
 148  */
 149 int mwifiex_bss_start(struct mwifiex_private *priv,
 150                       struct mwifiex_ssid_bssid *ssid_bssid)
 151 {
 152         int ret;
 153         struct mwifiex_adapter *adapter = priv->adapter;
 154         s32 i = -1;
 155
 156         priv->scan_block = false;
 157         if (!ssid_bssid)
 158                 return -1;
 159
 160         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 161                 /* Infra mode */
 162                 ret = mwifiex_deauthenticate(priv, NULL);
 163                 if (ret)
 164                         return ret;
 165
 166                 /* Search for the requested SSID in the scan table */
 167                 if (ssid_bssid->ssid.ssid_len)
 168                         i = mwifiex_find_ssid_in_list(priv, &ssid_bssid->ssid,
 169                                                 NULL, NL80211_IFTYPE_STATION);
 170                 else
 171                         i = mwifiex_find_bssid_in_list(priv,
 172                                                 (u8 *) &ssid_bssid->bssid,
 173                                                 NL80211_IFTYPE_STATION);
 174                 if (i < 0)
 175                         return -1;
 176
 177                 dev_dbg(adapter->dev,
 178                         "info: SSID found in scan list ... associating...\n");
 179
 180                 /* Clear any past association response stored for
 181                  * application retrieval */
 182                 priv->assoc_rsp_size = 0;
 183                 ret = mwifiex_associate(priv, &adapter->scan_table[i]);
 184                 if (ret)
 185                         return ret;
 186         } else {
 187                 /* Adhoc mode */
 188                 /* If the requested SSID matches current SSID, return */
 189                 if (ssid_bssid->ssid.ssid_len &&
 190                     (!mwifiex_ssid_cmp
 191                      (&priv->curr_bss_params.bss_descriptor.ssid,
 192                       &ssid_bssid->ssid)))
 193                         return 0;
 194
 195                 /* Exit Adhoc mode first */
 196                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 197                 ret = mwifiex_deauthenticate(priv, NULL);
 198                 if (ret)
 199                         return ret;
 200
 201                 priv->adhoc_is_link_sensed = false;
 202
 203                 /* Search for the requested network in the scan table */
 204                 if (ssid_bssid->ssid.ssid_len)
 205                         i = mwifiex_find_ssid_in_list(priv,
 206                                                       &ssid_bssid->ssid, NULL,
 207                                                       NL80211_IFTYPE_ADHOC);
 208                 else
 209                         i = mwifiex_find_bssid_in_list(priv,
 210                                                        (u8 *)&ssid_bssid->bssid,
 211                                                        NL80211_IFTYPE_ADHOC);
 212
 213                 if (i >= 0) {
 214                         dev_dbg(adapter->dev, "info: network found in scan"
 215                                                         " list. Joining...\n");
 216                         ret = mwifiex_adhoc_join(priv, &adapter->scan_table[i]);
 217                         if (ret)
 218                                 return ret;
 219                 } else {
 220                         dev_dbg(adapter->dev, "info: Network not found in "
 221                                 "the list, creating adhoc with ssid = %s\n",
 222                                ssid_bssid->ssid.ssid);
 223                         ret = mwifiex_adhoc_start(priv, &ssid_bssid->ssid);
 224                         if (ret)
 225                                 return ret;
 226                 }
 227         }
 228
 229         return ret;
 230 }
 231
 232 /*
 233  * IOCTL request handler to set host sleep configuration.
 234  *
 235  * This function prepares the correct firmware command and
 236  * issues it.
 237  */
 238 int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 239                           int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 240
 241 {
 242         struct mwifiex_adapter *adapter = priv->adapter;
 243         int status = 0;
 244         u32 prev_cond = 0;
 245
 246         if (!hs_cfg)
 247                 return -ENOMEM;
 248
 249         switch (action) {
 250         case HostCmd_ACT_GEN_SET:
 251                 if (adapter->pps_uapsd_mode) {
 252                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 253                                 " is blocked in UAPSD/PPS mode\n");
 254                         status = -1;
 255                         break;
 256                 }
 257                 if (hs_cfg->is_invoke_hostcmd) {
 258                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
 259                                 if (!adapter->is_hs_configured)
 260                                         /* Already cancelled */
 261                                         break;
 262                                 /* Save previous condition */
 263                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 264                                                         .conditions);
 265                                 adapter->hs_cfg.conditions =
 266                                                 cpu_to_le32(hs_cfg->conditions);
 267                         } else if (hs_cfg->conditions) {
 268                                 adapter->hs_cfg.conditions =
 269                                                 cpu_to_le32(hs_cfg->conditions);
 270                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 271                                 if (hs_cfg->gap)
 272                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 273                         } else if (adapter->hs_cfg.conditions ==
 274                                                 cpu_to_le32(
 275                                                 HOST_SLEEP_CFG_CANCEL)) {
 276                                 /* Return failure if no parameters for HS
 277                                    enable */
 278                                 status = -1;
 279                                 break;
 280                         }
 281                         if (cmd_type == MWIFIEX_SYNC_CMD)
 282                                 status = mwifiex_send_cmd_sync(priv,
 283                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 284                                                 HostCmd_ACT_GEN_SET, 0,
 285                                                 &adapter->hs_cfg);
 286                         else
 287                                 status = mwifiex_send_cmd_async(priv,
 288                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 289                                                 HostCmd_ACT_GEN_SET, 0,
 290                                                 &adapter->hs_cfg);
 291                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
 292                                 /* Restore previous condition */
 293                                 adapter->hs_cfg.conditions =
 294                                                 cpu_to_le32(prev_cond);
 295                 } else {
 296                         adapter->hs_cfg.conditions =
 297                                 cpu_to_le32(hs_cfg->conditions);
 298                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 299                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 300                 }
 301                 break;
 302         case HostCmd_ACT_GEN_GET:
 303                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 304                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 305                 hs_cfg->gap = adapter->hs_cfg.gap;
 306                 break;
 307         default:
 308                 status = -1;
 309                 break;
 310         }
 311
 312         return status;
 313 }
 314
 315 /*
 316  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 317  *
 318  * This function allocates the IOCTL request buffer, fills it
 319  * with requisite parameters and calls the IOCTL handler.
 320  */
 321 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 322 {
 323         struct mwifiex_ds_hs_cfg hscfg;
 324
 325         hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
 326         hscfg.is_invoke_hostcmd = true;
 327
 328         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 329                                     cmd_type, &hscfg);
 330 }
 331 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 332
 333 /*
 334  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 335  *
 336  * This function allocates the IOCTL request buffer, fills it
 337  * with requisite parameters and calls the IOCTL handler.
 338  */
 339 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 340 {
 341         struct mwifiex_ds_hs_cfg hscfg;
 342
 343         if (adapter->hs_activated) {
 344                 dev_dbg(adapter->dev, "cmd: HS Already actived\n");
 345                 return true;
 346         }
 347
 348         adapter->hs_activate_wait_q_woken = false;
 349
 350         memset(&hscfg, 0, sizeof(struct mwifiex_hs_config_param));
 351         hscfg.is_invoke_hostcmd = true;
 352
 353         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 354                                                        MWIFIEX_BSS_ROLE_STA),
 355                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 356                                   &hscfg)) {
 357                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 358                 return false;
 359         }
 360
 361         wait_event_interruptible(adapter->hs_activate_wait_q,
 362                         adapter->hs_activate_wait_q_woken);
 363
 364         return true;
 365 }
 366 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 367
 368 /*
 369  * IOCTL request handler to get BSS information.
 370  *
 371  * This function collates the information from different driver structures
 372  * to send to the user.
 373  */
 374 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 375                          struct mwifiex_bss_info *info)
 376 {
 377         struct mwifiex_adapter *adapter = priv->adapter;
 378         struct mwifiex_bssdescriptor *bss_desc;
 379         s32 tbl_idx;
 380
 381         if (!info)
 382                 return -1;
 383
 384         bss_desc = &priv->curr_bss_params.bss_descriptor;
 385
 386         info->bss_mode = priv->bss_mode;
 387
 388         memcpy(&info->ssid, &bss_desc->ssid,
 389                sizeof(struct mwifiex_802_11_ssid));
 390
 391         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 392
 393         info->bss_chan = bss_desc->channel;
 394
 395         info->region_code = adapter->region_code;
 396
 397         /* Scan table index if connected */
 398         info->scan_table_idx = 0;
 399         if (priv->media_connected) {
 400                 tbl_idx =
 401                         mwifiex_find_ssid_in_list(priv, &bss_desc->ssid,
 402                                                   bss_desc->mac_address,
 403                                                   priv->bss_mode);
 404                 if (tbl_idx >= 0)
 405                         info->scan_table_idx = tbl_idx;
 406         }
 407
 408         info->media_connected = priv->media_connected;
 409
 410         info->max_power_level = priv->max_tx_power_level;
 411         info->min_power_level = priv->min_tx_power_level;
 412
 413         info->adhoc_state = priv->adhoc_state;
 414
 415         info->bcn_nf_last = priv->bcn_nf_last;
 416
 417         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 418                 info->wep_status = true;
 419         else
 420                 info->wep_status = false;
 421
 422         info->is_hs_configured = adapter->is_hs_configured;
 423         info->is_deep_sleep = adapter->is_deep_sleep;
 424
 425         return 0;
 426 }
 427
 428 /*
 429  * The function sets band configurations.
 430  *
 431  * it performs extra checks to make sure the Ad-Hoc
 432  * band and channel are compatible. Otherwise it returns an error.
 433  *
 434  */
 435 int mwifiex_set_radio_band_cfg(struct mwifiex_private *priv,
 436                                struct mwifiex_ds_band_cfg *radio_cfg)
 437 {
 438         struct mwifiex_adapter *adapter = priv->adapter;
 439         u8 infra_band, adhoc_band;
 440         u32 adhoc_channel;
 441
 442         infra_band = (u8) radio_cfg->config_bands;
 443         adhoc_band = (u8) radio_cfg->adhoc_start_band;
 444         adhoc_channel = radio_cfg->adhoc_channel;
 445
 446         /* SET Infra band */
 447         if ((infra_band | adapter->fw_bands) & ~adapter->fw_bands)
 448                 return -1;
 449
 450         adapter->config_bands = infra_band;
 451
 452         /* SET Ad-hoc Band */
 453         if ((adhoc_band | adapter->fw_bands) & ~adapter->fw_bands)
 454                 return -1;
 455
 456         if (adhoc_band)
 457                 adapter->adhoc_start_band = adhoc_band;
 458         adapter->chan_offset = (u8) radio_cfg->sec_chan_offset;
 459         /*
 460          * If no adhoc_channel is supplied verify if the existing adhoc
 461          * channel compiles with new adhoc_band
 462          */
 463         if (!adhoc_channel) {
 464                 if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 465                      (priv, adapter->adhoc_start_band,
 466                      priv->adhoc_channel)) {
 467                         /* Pass back the default channel */
 468                         radio_cfg->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
 469                         if ((adapter->adhoc_start_band & BAND_A)
 470                             || (adapter->adhoc_start_band & BAND_AN))
 471                                 radio_cfg->adhoc_channel =
 472                                         DEFAULT_AD_HOC_CHANNEL_A;
 473                 }
 474         } else {        /* Retrurn error if adhoc_band and
 475                            adhoc_channel combination is invalid */
 476                 if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 477                     (priv, adapter->adhoc_start_band, (u16) adhoc_channel))
 478                         return -1;
 479                 priv->adhoc_channel = (u8) adhoc_channel;
 480         }
 481         if ((adhoc_band & BAND_GN) || (adhoc_band & BAND_AN))
 482                 adapter->adhoc_11n_enabled = true;
 483         else
 484                 adapter->adhoc_11n_enabled = false;
 485
 486         return 0;
 487 }
 488
 489 /*
 490  * IOCTL request handler to set/get active channel.
 491  *
 492  * This function performs validity checking on channel/frequency
 493  * compatibility and returns failure if not valid.
 494  */
 495 int mwifiex_bss_set_channel(struct mwifiex_private *priv,
 496                             struct mwifiex_chan_freq_power *chan)
 497 {
 498         struct mwifiex_adapter *adapter = priv->adapter;
 499         struct mwifiex_chan_freq_power *cfp = NULL;
 500
 501         if (!chan)
 502                 return -1;
 503
 504         if (!chan->channel && !chan->freq)
 505                 return -1;
 506         if (adapter->adhoc_start_band & BAND_AN)
 507                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
 508         else if (adapter->adhoc_start_band & BAND_A)
 509                 adapter->adhoc_start_band = BAND_G | BAND_B;
 510         if (chan->channel) {
 511                 if (chan->channel <= MAX_CHANNEL_BAND_BG)
 512                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 513                                         (priv, 0, (u16) chan->channel);
 514                 if (!cfp) {
 515                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 516                                         (priv, BAND_A, (u16) chan->channel);
 517                         if (cfp) {
 518                                 if (adapter->adhoc_11n_enabled)
 519                                         adapter->adhoc_start_band = BAND_A
 520                                                 | BAND_AN;
 521                                 else
 522                                         adapter->adhoc_start_band = BAND_A;
 523                         }
 524                 }
 525         } else {
 526                 if (chan->freq <= MAX_FREQUENCY_BAND_BG)
 527                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211(
 528                                                         priv, 0, chan->freq);
 529                 if (!cfp) {
 530                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211
 531                                                   (priv, BAND_A, chan->freq);
 532                         if (cfp) {
 533                                 if (adapter->adhoc_11n_enabled)
 534                                         adapter->adhoc_start_band = BAND_A
 535                                                 | BAND_AN;
 536                                 else
 537                                         adapter->adhoc_start_band = BAND_A;
 538                         }
 539                 }
 540         }
 541         if (!cfp || !cfp->channel) {
 542                 dev_err(adapter->dev, "invalid channel/freq\n");
 543                 return -1;
 544         }
 545         priv->adhoc_channel = (u8) cfp->channel;
 546         chan->channel = cfp->channel;
 547         chan->freq = cfp->freq;
 548
 549         return 0;
 550 }
 551
 552 /*
 553  * IOCTL request handler to set/get Ad-Hoc channel.
 554  *
 555  * This function prepares the correct firmware command and
 556  * issues it to set or get the ad-hoc channel.
 557  */
 558 static int mwifiex_bss_ioctl_ibss_channel(struct mwifiex_private *priv,
 559                                           u16 action, u16 *channel)
 560 {
 561         if (action == HostCmd_ACT_GEN_GET) {
 562                 if (!priv->media_connected) {
 563                         *channel = priv->adhoc_channel;
 564                         return 0;
 565                 }
 566         } else {
 567                 priv->adhoc_channel = (u8) *channel;
 568         }
 569
 570         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_RF_CHANNEL,
 571                                     action, 0, channel);
 572 }
 573
 574 /*
 575  * IOCTL request handler to find a particular BSS.
 576  *
 577  * The BSS can be searched with either a BSSID or a SSID. If none of
 578  * these are provided, just the best BSS (best RSSI) is returned.
 579  */
 580 int mwifiex_bss_ioctl_find_bss(struct mwifiex_private *priv,
 581                                struct mwifiex_ssid_bssid *ssid_bssid)
 582 {
 583         struct mwifiex_adapter *adapter = priv->adapter;
 584         struct mwifiex_bssdescriptor *bss_desc;
 585         u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
 586         u8 mac[ETH_ALEN];
 587         int i = 0;
 588
 589         if (memcmp(ssid_bssid->bssid, zero_mac, sizeof(zero_mac))) {
 590                 i = mwifiex_find_bssid_in_list(priv,
 591                                                (u8 *) ssid_bssid->bssid,
 592                                                priv->bss_mode);
 593                 if (i < 0) {
 594                         memcpy(mac, ssid_bssid->bssid, sizeof(mac));
 595                         dev_err(adapter->dev, "cannot find bssid %pM\n", mac);
 596                         return -1;
 597                 }
 598                 bss_desc = &adapter->scan_table[i];
 599                 memcpy(&ssid_bssid->ssid, &bss_desc->ssid,
 600                                 sizeof(struct mwifiex_802_11_ssid));
 601         } else if (ssid_bssid->ssid.ssid_len) {
 602                 i = mwifiex_find_ssid_in_list(priv, &ssid_bssid->ssid, NULL,
 603                                               priv->bss_mode);
 604                 if (i < 0) {
 605                         dev_err(adapter->dev, "cannot find ssid %s\n",
 606                                         ssid_bssid->ssid.ssid);
 607                         return -1;
 608                 }
 609                 bss_desc = &adapter->scan_table[i];
 610                 memcpy(ssid_bssid->bssid, bss_desc->mac_address, ETH_ALEN);
 611         } else {
 612                 return mwifiex_find_best_network(priv, ssid_bssid);
 613         }
 614
 615         return 0;
 616 }
 617
 618 /*
 619  * IOCTL request handler to change Ad-Hoc channel.
 620  *
 621  * This function allocates the IOCTL request buffer, fills it
 622  * with requisite parameters and calls the IOCTL handler.
 623  *
 624  * The function follows the following steps to perform the change -
 625  *      - Get current IBSS information
 626  *      - Get current channel
 627  *      - If no change is required, return
 628  *      - If not connected, change channel and return
 629  *      - If connected,
 630  *          - Disconnect
 631  *          - Change channel
 632  *          - Perform specific SSID scan with same SSID
 633  *          - Start/Join the IBSS
 634  */
 635 int
 636 mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, int channel)
 637 {
 638         int ret;
 639         struct mwifiex_bss_info bss_info;
 640         struct mwifiex_ssid_bssid ssid_bssid;
 641         u16 curr_chan = 0;
 642
 643         memset(&bss_info, 0, sizeof(bss_info));
 644
 645         /* Get BSS information */
 646         if (mwifiex_get_bss_info(priv, &bss_info))
 647                 return -1;
 648
 649         /* Get current channel */
 650         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
 651                                              &curr_chan);
 652
 653         if (curr_chan == channel) {
 654                 ret = 0;
 655                 goto done;
 656         }
 657         dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
 658                         curr_chan, channel);
 659
 660         if (!bss_info.media_connected) {
 661                 ret = 0;
 662                 goto done;
 663         }
 664
 665         /* Do disonnect */
 666         memset(&ssid_bssid, 0, ETH_ALEN);
 667         ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
 668
 669         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
 670                                              (u16 *) &channel);
 671
 672         /* Do specific SSID scanning */
 673         if (mwifiex_request_scan(priv, &bss_info.ssid)) {
 674                 ret = -1;
 675                 goto done;
 676         }
 677         /* Start/Join Adhoc network */
 678         memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
 679         memcpy(&ssid_bssid.ssid, &bss_info.ssid,
 680                sizeof(struct mwifiex_802_11_ssid));
 681
 682         ret = mwifiex_bss_start(priv, &ssid_bssid);
 683 done:
 684         return ret;
 685 }
 686
 687 /*
 688  * IOCTL request handler to get rate.
 689  *
 690  * This function prepares the correct firmware command and
 691  * issues it to get the current rate if it is connected,
 692  * otherwise, the function returns the lowest supported rate
 693  * for the band.
 694  */
 695 static int mwifiex_rate_ioctl_get_rate_value(struct mwifiex_private *priv,
 696                                              struct mwifiex_rate_cfg *rate_cfg)
 697 {
 698         struct mwifiex_adapter *adapter = priv->adapter;
 699
 700         rate_cfg->is_rate_auto = priv->is_data_rate_auto;
 701         if (!priv->media_connected) {
 702                 switch (adapter->config_bands) {
 703                 case BAND_B:
 704                         /* Return the lowest supported rate for B band */
 705                         rate_cfg->rate = supported_rates_b[0] & 0x7f;
 706                         break;
 707                 case BAND_G:
 708                 case BAND_G | BAND_GN:
 709                         /* Return the lowest supported rate for G band */
 710                         rate_cfg->rate = supported_rates_g[0] & 0x7f;
 711                         break;
 712                 case BAND_B | BAND_G:
 713                 case BAND_A | BAND_B | BAND_G:
 714                 case BAND_A | BAND_B:
 715                 case BAND_A | BAND_B | BAND_G | BAND_AN | BAND_GN:
 716                 case BAND_B | BAND_G | BAND_GN:
 717                         /* Return the lowest supported rate for BG band */
 718                         rate_cfg->rate = supported_rates_bg[0] & 0x7f;
 719                         break;
 720                 case BAND_A:
 721                 case BAND_A | BAND_G:
 722                 case BAND_A | BAND_G | BAND_AN | BAND_GN:
 723                 case BAND_A | BAND_AN:
 724                         /* Return the lowest supported rate for A band */
 725                         rate_cfg->rate = supported_rates_a[0] & 0x7f;
 726                         break;
 727                 case BAND_GN:
 728                         /* Return the lowest supported rate for N band */
 729                         rate_cfg->rate = supported_rates_n[0] & 0x7f;
 730                         break;
 731                 default:
 732                         dev_warn(adapter->dev, "invalid band %#x\n",
 733                                adapter->config_bands);
 734                         break;
 735                 }
 736         } else {
 737                 return mwifiex_send_cmd_sync(priv,
 738                                             HostCmd_CMD_802_11_TX_RATE_QUERY,
 739                                             HostCmd_ACT_GEN_GET, 0, NULL);
 740         }
 741
 742         return 0;
 743 }
 744
 745 /*
 746  * IOCTL request handler to set rate.
 747  *
 748  * This function prepares the correct firmware command and
 749  * issues it to set the current rate.
 750  *
 751  * The function also performs validation checking on the supplied value.
 752  */
 753 static int mwifiex_rate_ioctl_set_rate_value(struct mwifiex_private *priv,
 754                                              struct mwifiex_rate_cfg *rate_cfg)
 755 {
 756         u8 rates[MWIFIEX_SUPPORTED_RATES];
 757         u8 *rate;
 758         int rate_index, ret;
 759         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
 760         u32 i;
 761         struct mwifiex_adapter *adapter = priv->adapter;
 762
 763         if (rate_cfg->is_rate_auto) {
 764                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 765                 /* Support all HR/DSSS rates */
 766                 bitmap_rates[0] = 0x000F;
 767                 /* Support all OFDM rates */
 768                 bitmap_rates[1] = 0x00FF;
 769                 /* Support all HT-MCSs rate */
 770                 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates) - 3; i++)
 771                         bitmap_rates[i + 2] = 0xFFFF;
 772                 bitmap_rates[9] = 0x3FFF;
 773         } else {
 774                 memset(rates, 0, sizeof(rates));
 775                 mwifiex_get_active_data_rates(priv, rates);
 776                 rate = rates;
 777                 for (i = 0; (rate[i] && i < MWIFIEX_SUPPORTED_RATES); i++) {
 778                         dev_dbg(adapter->dev, "info: rate=%#x wanted=%#x\n",
 779                                 rate[i], rate_cfg->rate);
 780                         if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
 781                                 break;
 782                 }
 783                 if (!rate[i] || (i == MWIFIEX_SUPPORTED_RATES)) {
 784                         dev_err(adapter->dev, "fixed data rate %#x is out "
 785                                "of range\n", rate_cfg->rate);
 786                         return -1;
 787                 }
 788                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 789
 790                 rate_index = mwifiex_data_rate_to_index(rate_cfg->rate);
 791
 792                 /* Only allow b/g rates to be set */
 793                 if (rate_index >= MWIFIEX_RATE_INDEX_HRDSSS0 &&
 794                     rate_index <= MWIFIEX_RATE_INDEX_HRDSSS3) {
 795                         bitmap_rates[0] = 1 << rate_index;
 796                 } else {
 797                         rate_index -= 1; /* There is a 0x00 in the table */
 798                         if (rate_index >= MWIFIEX_RATE_INDEX_OFDM0 &&
 799                             rate_index <= MWIFIEX_RATE_INDEX_OFDM7)
 800                                 bitmap_rates[1] = 1 << (rate_index -
 801                                                    MWIFIEX_RATE_INDEX_OFDM0);
 802                 }
 803         }
 804
 805         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
 806                                     HostCmd_ACT_GEN_SET, 0, bitmap_rates);
 807
 808         return ret;
 809 }
 810
 811 /*
 812  * IOCTL request handler to set/get rate.
 813  *
 814  * This function can be used to set/get either the rate value or the
 815  * rate index.
 816  */
 817 static int mwifiex_rate_ioctl_cfg(struct mwifiex_private *priv,
 818                                   struct mwifiex_rate_cfg *rate_cfg)
 819 {
 820         int status;
 821
 822         if (!rate_cfg)
 823                 return -1;
 824
 825         if (rate_cfg->action == HostCmd_ACT_GEN_GET)
 826                 status = mwifiex_rate_ioctl_get_rate_value(priv, rate_cfg);
 827         else
 828                 status = mwifiex_rate_ioctl_set_rate_value(priv, rate_cfg);
 829
 830         return status;
 831 }
 832
 833 /*
 834  * Sends IOCTL request to get the data rate.
 835  *
 836  * This function allocates the IOCTL request buffer, fills it
 837  * with requisite parameters and calls the IOCTL handler.
 838  */
 839 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,
 840                               struct mwifiex_rate_cfg *rate)
 841 {
 842         int ret;
 843
 844         memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
 845         rate->action = HostCmd_ACT_GEN_GET;
 846         ret = mwifiex_rate_ioctl_cfg(priv, rate);
 847
 848         if (!ret) {
 849                 if (rate && rate->is_rate_auto)
 850                         rate->rate = mwifiex_index_to_data_rate(priv->tx_rate,
 851                                                         priv->tx_htinfo);
 852                 else if (rate)
 853                         rate->rate = priv->data_rate;
 854         } else {
 855                 ret = -1;
 856         }
 857
 858         return ret;
 859 }
 860
 861 /*
 862  * IOCTL request handler to set tx power configuration.
 863  *
 864  * This function prepares the correct firmware command and
 865  * issues it.
 866  *
 867  * For non-auto power mode, all the following power groups are set -
 868  *      - Modulation class HR/DSSS
 869  *      - Modulation class OFDM
 870  *      - Modulation class HTBW20
 871  *      - Modulation class HTBW40
 872  */
 873 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 874                          struct mwifiex_power_cfg *power_cfg)
 875 {
 876         int ret;
 877         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 878         struct mwifiex_types_power_group *pg_tlv;
 879         struct mwifiex_power_group *pg;
 880         u8 *buf;
 881         u16 dbm = 0;
 882
 883         if (!power_cfg->is_power_auto) {
 884                 dbm = (u16) power_cfg->power_level;
 885                 if ((dbm < priv->min_tx_power_level) ||
 886                     (dbm > priv->max_tx_power_level)) {
 887                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 888                                         " is out of range (%d dBm-%d dBm)\n",
 889                                         dbm, priv->min_tx_power_level,
 890                                         priv->max_tx_power_level);
 891                         return -1;
 892                 }
 893         }
 894         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 895         if (!buf) {
 896                 dev_err(priv->adapter->dev, "%s: failed to alloc cmd buffer\n",
 897                                 __func__);
 898                 return -ENOMEM;
 899         }
 900
 901         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 902         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 903         if (!power_cfg->is_power_auto) {
 904                 txp_cfg->mode = cpu_to_le32(1);
 905                 pg_tlv = (struct mwifiex_types_power_group *) (buf +
 906                                 sizeof(struct host_cmd_ds_txpwr_cfg));
 907                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 908                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 909                 pg = (struct mwifiex_power_group *) (buf +
 910                                 sizeof(struct host_cmd_ds_txpwr_cfg) +
 911                                 sizeof(struct mwifiex_types_power_group));
 912                 /* Power group for modulation class HR/DSSS */
 913                 pg->first_rate_code = 0x00;
 914                 pg->last_rate_code = 0x03;
 915                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 916                 pg->power_step = 0;
 917                 pg->power_min = (s8) dbm;
 918                 pg->power_max = (s8) dbm;
 919                 pg++;
 920                 /* Power group for modulation class OFDM */
 921                 pg->first_rate_code = 0x00;
 922                 pg->last_rate_code = 0x07;
 923                 pg->modulation_class = MOD_CLASS_OFDM;
 924                 pg->power_step = 0;
 925                 pg->power_min = (s8) dbm;
 926                 pg->power_max = (s8) dbm;
 927                 pg++;
 928                 /* Power group for modulation class HTBW20 */
 929                 pg->first_rate_code = 0x00;
 930                 pg->last_rate_code = 0x20;
 931                 pg->modulation_class = MOD_CLASS_HT;
 932                 pg->power_step = 0;
 933                 pg->power_min = (s8) dbm;
 934                 pg->power_max = (s8) dbm;
 935                 pg->ht_bandwidth = HT_BW_20;
 936                 pg++;
 937                 /* Power group for modulation class HTBW40 */
 938                 pg->first_rate_code = 0x00;
 939                 pg->last_rate_code = 0x20;
 940                 pg->modulation_class = MOD_CLASS_HT;
 941                 pg->power_step = 0;
 942                 pg->power_min = (s8) dbm;
 943                 pg->power_max = (s8) dbm;
 944                 pg->ht_bandwidth = HT_BW_40;
 945         }
 946         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 947                                     HostCmd_ACT_GEN_SET, 0, buf);
 948
 949         kfree(buf);
 950         return ret;
 951 }
 952
 953 /*
 954  * IOCTL request handler to get power save mode.
 955  *
 956  * This function prepares the correct firmware command and
 957  * issues it.
 958  */
 959 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 960 {
 961         int ret;
 962         struct mwifiex_adapter *adapter = priv->adapter;
 963         u16 sub_cmd;
 964
 965         if (*ps_mode)
 966                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 967         else
 968                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 969         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 970         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 971                                     sub_cmd, BITMAP_STA_PS, NULL);
 972         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 973                 ret = mwifiex_send_cmd_async(priv,
 974                                 HostCmd_CMD_802_11_PS_MODE_ENH, GET_PS,
 975                                 0, NULL);
 976
 977         return ret;
 978 }
 979
 980 /*
 981  * IOCTL request handler to set/reset WPA IE.
 982  *
 983  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 984  * is checked to determine WPA version. If buffer length is zero, the existing
 985  * WPA IE is reset.
 986  */
 987 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 988                                      u8 *ie_data_ptr, u16 ie_len)
 989 {
 990         if (ie_len) {
 991                 if (ie_len > sizeof(priv->wpa_ie)) {
 992                         dev_err(priv->adapter->dev,
 993                                 "failed to copy WPA IE, too big\n");
 994                         return -1;
 995                 }
 996                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 997                 priv->wpa_ie_len = (u8) ie_len;
 998                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 999                                 priv->wpa_ie_len, priv->wpa_ie[0]);
1000
1001                 if (priv->wpa_ie[0] == WLAN_EID_WPA) {
1002                         priv->sec_info.wpa_enabled = true;
1003                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
1004                         priv->sec_info.wpa2_enabled = true;
1005                 } else {
1006                         priv->sec_info.wpa_enabled = false;
1007                         priv->sec_info.wpa2_enabled = false;
1008                 }
1009         } else {
1010                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
1011                 priv->wpa_ie_len = 0;
1012                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
1013                         priv->wpa_ie_len, priv->wpa_ie[0]);
1014                 priv->sec_info.wpa_enabled = false;
1015                 priv->sec_info.wpa2_enabled = false;
1016         }
1017
1018         return 0;
1019 }
1020
1021 /*
1022  * IOCTL request handler to set/reset WAPI IE.
1023  *
1024  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
1025  * is checked to internally enable WAPI. If buffer length is zero, the existing
1026  * WAPI IE is reset.
1027  */
1028 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
1029                                u8 *ie_data_ptr, u16 ie_len)
1030 {
1031         if (ie_len) {
1032                 if (ie_len > sizeof(priv->wapi_ie)) {
1033                         dev_dbg(priv->adapter->dev,
1034                                 "info: failed to copy WAPI IE, too big\n");
1035                         return -1;
1036                 }
1037                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
1038                 priv->wapi_ie_len = ie_len;
1039                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
1040                                 priv->wapi_ie_len, priv->wapi_ie[0]);
1041
1042                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
1043                         priv->sec_info.wapi_enabled = true;
1044         } else {
1045                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
1046                 priv->wapi_ie_len = ie_len;
1047                 dev_dbg(priv->adapter->dev,
1048                         "info: Reset wapi_ie_len=%d IE=%#x\n",
1049                        priv->wapi_ie_len, priv->wapi_ie[0]);
1050                 priv->sec_info.wapi_enabled = false;
1051         }
1052         return 0;
1053 }
1054
1055 /*
1056  * IOCTL request handler to set WAPI key.
1057  *
1058  * This function prepares the correct firmware command and
1059  * issues it.
1060  */
1061 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
1062                                struct mwifiex_ds_encrypt_key *encrypt_key)
1063 {
1064
1065         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
1066                                     HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1067                                     encrypt_key);
1068 }
1069
1070 /*
1071  * IOCTL request handler to set WEP network key.
1072  *
1073  * This function prepares the correct firmware command and
1074  * issues it, after validation checks.
1075  */
1076 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
1077                               struct mwifiex_ds_encrypt_key *encrypt_key)
1078 {
1079         int ret;
1080         struct mwifiex_wep_key *wep_key;
1081         int index;
1082
1083         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
1084                 priv->wep_key_curr_index = 0;
1085         wep_key = &priv->wep_key[priv->wep_key_curr_index];
1086         index = encrypt_key->key_index;
1087         if (encrypt_key->key_disable) {
1088                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_DISABLED;
1089         } else if (!encrypt_key->key_len) {
1090                 /* Copy the required key as the current key */
1091                 wep_key = &priv->wep_key[index];
1092                 if (!wep_key->key_length) {
1093                         dev_err(priv->adapter->dev,
1094                                 "key not set, so cannot enable it\n");
1095                         return -1;
1096                 }
1097                 priv->wep_key_curr_index = (u16) index;
1098                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1099         } else {
1100                 wep_key = &priv->wep_key[index];
1101                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
1102                 /* Copy the key in the driver */
1103                 memcpy(wep_key->key_material,
1104                        encrypt_key->key_material,
1105                        encrypt_key->key_len);
1106                 wep_key->key_index = index;
1107                 wep_key->key_length = encrypt_key->key_len;
1108                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1109         }
1110         if (wep_key->key_length) {
1111                 /* Send request to firmware */
1112                 ret = mwifiex_send_cmd_async(priv,
1113                                              HostCmd_CMD_802_11_KEY_MATERIAL,
1114                                              HostCmd_ACT_GEN_SET, 0, NULL);
1115                 if (ret)
1116                         return ret;
1117         }
1118         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
1119                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1120         else
1121                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1122
1123         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1124                                     HostCmd_ACT_GEN_SET, 0,
1125                                     &priv->curr_pkt_filter);
1126
1127         return ret;
1128 }
1129
1130 /*
1131  * IOCTL request handler to set WPA key.
1132  *
1133  * This function prepares the correct firmware command and
1134  * issues it, after validation checks.
1135  *
1136  * Current driver only supports key length of up to 32 bytes.
1137  *
1138  * This function can also be used to disable a currently set key.
1139  */
1140 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
1141                               struct mwifiex_ds_encrypt_key *encrypt_key)
1142 {
1143         int ret;
1144         u8 remove_key = false;
1145         struct host_cmd_ds_802_11_key_material *ibss_key;
1146
1147         /* Current driver only supports key length of up to 32 bytes */
1148         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
1149                 dev_err(priv->adapter->dev, "key length too long\n");
1150                 return -1;
1151         }
1152
1153         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1154                 /*
1155                  * IBSS/WPA-None uses only one key (Group) for both receiving
1156                  * and sending unicast and multicast packets.
1157                  */
1158                 /* Send the key as PTK to firmware */
1159                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1160                 ret = mwifiex_send_cmd_async(priv,
1161                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1162                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1163                                         encrypt_key);
1164                 if (ret)
1165                         return ret;
1166
1167                 ibss_key = &priv->aes_key;
1168                 memset(ibss_key, 0,
1169                        sizeof(struct host_cmd_ds_802_11_key_material));
1170                 /* Copy the key in the driver */
1171                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
1172                        encrypt_key->key_len);
1173                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
1174                        sizeof(ibss_key->key_param_set.key_len));
1175                 ibss_key->key_param_set.key_type_id
1176                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
1177                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
1178
1179                 /* Send the key as GTK to firmware */
1180                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
1181         }
1182
1183         if (!encrypt_key->key_index)
1184                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1185
1186         if (remove_key)
1187                 ret = mwifiex_send_cmd_sync(priv,
1188                                        HostCmd_CMD_802_11_KEY_MATERIAL,
1189                                        HostCmd_ACT_GEN_SET, !(KEY_INFO_ENABLED),
1190                                        encrypt_key);
1191         else
1192                 ret = mwifiex_send_cmd_sync(priv,
1193                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1194                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1195                                         encrypt_key);
1196
1197         return ret;
1198 }
1199
1200 /*
1201  * IOCTL request handler to set/get network keys.
1202  *
1203  * This is a generic key handling function which supports WEP, WPA
1204  * and WAPI.
1205  */
1206 static int
1207 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1208                               struct mwifiex_ds_encrypt_key *encrypt_key)
1209 {
1210         int status;
1211
1212         if (encrypt_key->is_wapi_key)
1213                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1214         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1215                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1216         else
1217                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1218         return status;
1219 }
1220
1221 /*
1222  * This function returns the driver version.
1223  */
1224 int
1225 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1226                                int max_len)
1227 {
1228         union {
1229                 u32 l;
1230                 u8 c[4];
1231         } ver;
1232         char fw_ver[32];
1233
1234         ver.l = adapter->fw_release_number;
1235         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1236
1237         snprintf(version, max_len, driver_version, fw_ver);
1238
1239         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1240
1241         return 0;
1242 }
1243
1244 /*
1245  * Sends IOCTL request to get signal information.
1246  *
1247  * This function allocates the IOCTL request buffer, fills it
1248  * with requisite parameters and calls the IOCTL handler.
1249  */
1250 int mwifiex_get_signal_info(struct mwifiex_private *priv,
1251                             struct mwifiex_ds_get_signal *signal)
1252 {
1253         int status;
1254
1255         signal->selector = ALL_RSSI_INFO_MASK;
1256
1257         /* Signal info can be obtained only if connected */
1258         if (!priv->media_connected) {
1259                 dev_dbg(priv->adapter->dev,
1260                         "info: Can not get signal in disconnected state\n");
1261                 return -1;
1262         }
1263
1264         status = mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
1265                                        HostCmd_ACT_GEN_GET, 0, signal);
1266
1267         if (!status) {
1268                 if (signal->selector & BCN_RSSI_AVG_MASK)
1269                         priv->w_stats.qual.level = signal->bcn_rssi_avg;
1270                 if (signal->selector & BCN_NF_AVG_MASK)
1271                         priv->w_stats.qual.noise = signal->bcn_nf_avg;
1272         }
1273
1274         return status;
1275 }
1276
1277 /*
1278  * Sends IOCTL request to set encoding parameters.
1279  *
1280  * This function allocates the IOCTL request buffer, fills it
1281  * with requisite parameters and calls the IOCTL handler.
1282  */
1283 int mwifiex_set_encode(struct mwifiex_private *priv, const u8 *key,
1284                         int key_len, u8 key_index, int disable)
1285 {
1286         struct mwifiex_ds_encrypt_key encrypt_key;
1287
1288         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1289         encrypt_key.key_len = key_len;
1290         if (!disable) {
1291                 encrypt_key.key_index = key_index;
1292                 if (key_len)
1293                         memcpy(encrypt_key.key_material, key, key_len);
1294         } else {
1295                 encrypt_key.key_disable = true;
1296         }
1297
1298         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1299 }
1300
1301 /*
1302  * Sends IOCTL request to get extended version.
1303  *
1304  * This function allocates the IOCTL request buffer, fills it
1305  * with requisite parameters and calls the IOCTL handler.
1306  */
1307 int
1308 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1309 {
1310         struct mwifiex_ver_ext ver_ext;
1311
1312         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1313         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1314                                     HostCmd_ACT_GEN_GET, 0, &ver_ext))
1315                 return -1;
1316
1317         return 0;
1318 }
1319
1320 /*
1321  * Sends IOCTL request to get statistics information.
1322  *
1323  * This function allocates the IOCTL request buffer, fills it
1324  * with requisite parameters and calls the IOCTL handler.
1325  */
1326 int
1327 mwifiex_get_stats_info(struct mwifiex_private *priv,
1328                        struct mwifiex_ds_get_stats *log)
1329 {
1330         int ret;
1331
1332         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1333                                     HostCmd_ACT_GEN_GET, 0, log);
1334
1335         if (!ret) {
1336                 priv->w_stats.discard.fragment = log->fcs_error;
1337                 priv->w_stats.discard.retries = log->retry;
1338                 priv->w_stats.discard.misc = log->ack_failure;
1339         }
1340
1341         return ret;
1342 }
1343
1344 /*
1345  * IOCTL request handler to read/write register.
1346  *
1347  * This function prepares the correct firmware command and
1348  * issues it.
1349  *
1350  * Access to the following registers are supported -
1351  *      - MAC
1352  *      - BBP
1353  *      - RF
1354  *      - PMIC
1355  *      - CAU
1356  */
1357 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1358                                         struct mwifiex_ds_reg_rw *reg_rw,
1359                                         u16 action)
1360 {
1361         u16 cmd_no;
1362
1363         switch (le32_to_cpu(reg_rw->type)) {
1364         case MWIFIEX_REG_MAC:
1365                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1366                 break;
1367         case MWIFIEX_REG_BBP:
1368                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1369                 break;
1370         case MWIFIEX_REG_RF:
1371                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1372                 break;
1373         case MWIFIEX_REG_PMIC:
1374                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1375                 break;
1376         case MWIFIEX_REG_CAU:
1377                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1378                 break;
1379         default:
1380                 return -1;
1381         }
1382
1383         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1384
1385 }
1386
1387 /*
1388  * Sends IOCTL request to write to a register.
1389  *
1390  * This function allocates the IOCTL request buffer, fills it
1391  * with requisite parameters and calls the IOCTL handler.
1392  */
1393 int
1394 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1395                   u32 reg_offset, u32 reg_value)
1396 {
1397         struct mwifiex_ds_reg_rw reg_rw;
1398
1399         reg_rw.type = cpu_to_le32(reg_type);
1400         reg_rw.offset = cpu_to_le32(reg_offset);
1401         reg_rw.value = cpu_to_le32(reg_value);
1402
1403         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1404 }
1405
1406 /*
1407  * Sends IOCTL request to read from a register.
1408  *
1409  * This function allocates the IOCTL request buffer, fills it
1410  * with requisite parameters and calls the IOCTL handler.
1411  */
1412 int
1413 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1414                  u32 reg_offset, u32 *value)
1415 {
1416         int ret;
1417         struct mwifiex_ds_reg_rw reg_rw;
1418
1419         reg_rw.type = cpu_to_le32(reg_type);
1420         reg_rw.offset = cpu_to_le32(reg_offset);
1421         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1422
1423         if (ret)
1424                 goto done;
1425
1426         *value = le32_to_cpu(reg_rw.value);
1427
1428 done:
1429         return ret;
1430 }
1431
1432 /*
1433  * Sends IOCTL request to read from EEPROM.
1434  *
1435  * This function allocates the IOCTL request buffer, fills it
1436  * with requisite parameters and calls the IOCTL handler.
1437  */
1438 int
1439 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1440                     u8 *value)
1441 {
1442         int ret;
1443         struct mwifiex_ds_read_eeprom rd_eeprom;
1444
1445         rd_eeprom.offset = cpu_to_le16((u16) offset);
1446         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1447
1448         /* Send request to firmware */
1449         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1450                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1451
1452         if (!ret)
1453                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1454         return ret;
1455 }
1456
1457 /*
1458  * This function sets a generic IE. In addition to generic IE, it can
1459  * also handle WPA, WPA2 and WAPI IEs.
1460  */
1461 static int
1462 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1463                           u16 ie_len)
1464 {
1465         int ret = 0;
1466         struct ieee_types_vendor_header *pvendor_ie;
1467         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1468         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1469
1470         /* If the passed length is zero, reset the buffer */
1471         if (!ie_len) {
1472                 priv->gen_ie_buf_len = 0;
1473                 priv->wps.session_enable = false;
1474
1475                 return 0;
1476         } else if (!ie_data_ptr) {
1477                 return -1;
1478         }
1479         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1480         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1481         if (((pvendor_ie->element_id == WLAN_EID_WPA)
1482              && (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui))))
1483                         || (pvendor_ie->element_id == WLAN_EID_RSN)) {
1484
1485                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1486                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1487                 priv->wps.session_enable = false;
1488
1489                 return ret;
1490         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1491                 /* IE is a WAPI IE so call set_wapi function */
1492                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1493
1494                 return ret;
1495         }
1496         /*
1497          * Verify that the passed length is not larger than the
1498          * available space remaining in the buffer
1499          */
1500         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1501
1502                 /* Test to see if it is a WPS IE, if so, enable
1503                  * wps session flag
1504                  */
1505                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1506                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC)
1507                                 && (!memcmp(pvendor_ie->oui, wps_oui,
1508                                                 sizeof(wps_oui)))) {
1509                         priv->wps.session_enable = true;
1510                         dev_dbg(priv->adapter->dev,
1511                                 "info: WPS Session Enabled.\n");
1512                 }
1513
1514                 /* Append the passed data to the end of the
1515                    genIeBuffer */
1516                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1517                                                                         ie_len);
1518                 /* Increment the stored buffer length by the
1519                    size passed */
1520                 priv->gen_ie_buf_len += ie_len;
1521         } else {
1522                 /* Passed data does not fit in the remaining
1523                    buffer space */
1524                 ret = -1;
1525         }
1526
1527         /* Return 0, or -1 for error case */
1528         return ret;
1529 }
1530
1531 /*
1532  * IOCTL request handler to set/get generic IE.
1533  *
1534  * In addition to various generic IEs, this function can also be
1535  * used to set the ARP filter.
1536  */
1537 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1538                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1539                                      u16 action)
1540 {
1541         struct mwifiex_adapter *adapter = priv->adapter;
1542
1543         switch (gen_ie->type) {
1544         case MWIFIEX_IE_TYPE_GEN_IE:
1545                 if (action == HostCmd_ACT_GEN_GET) {
1546                         gen_ie->len = priv->wpa_ie_len;
1547                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1548                 } else {
1549                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1550                                                   (u16) gen_ie->len);
1551                 }
1552                 break;
1553         case MWIFIEX_IE_TYPE_ARP_FILTER:
1554                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1555                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1556                         adapter->arp_filter_size = 0;
1557                         dev_err(adapter->dev, "invalid ARP filter size\n");
1558                         return -1;
1559                 } else {
1560                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1561                                                                 gen_ie->len);
1562                         adapter->arp_filter_size = gen_ie->len;
1563                 }
1564                 break;
1565         default:
1566                 dev_err(adapter->dev, "invalid IE type\n");
1567                 return -1;
1568         }
1569         return 0;
1570 }
1571
1572 /*
1573  * Sends IOCTL request to set a generic IE.
1574  *
1575  * This function allocates the IOCTL request buffer, fills it
1576  * with requisite parameters and calls the IOCTL handler.
1577  */
1578 int
1579 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1580 {
1581         struct mwifiex_ds_misc_gen_ie gen_ie;
1582
1583         if (ie_len > IW_CUSTOM_MAX)
1584                 return -EFAULT;
1585
1586         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1587         gen_ie.len = ie_len;
1588         memcpy(gen_ie.ie_data, ie, ie_len);
1589         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1590                 return -EFAULT;
1591
1592         return 0;
1593 }