drivers/net/wireless/mwifiex/sta_ioctl.c

   1 /*
   2  * Marvell Wireless LAN device driver: functions for station ioctl
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "decl.h"
  21 #include "ioctl.h"
  22 #include "util.h"
  23 #include "fw.h"
  24 #include "main.h"
  25 #include "wmm.h"
  26 #include "11n.h"
  27 #include "cfg80211.h"
  28
  29 /*
  30  * Copies the multicast address list from device to driver.
  31  *
  32  * This function does not validate the destination memory for
  33  * size, and the calling function must ensure enough memory is
  34  * available.
  35  */
  36 int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
  37                             struct net_device *dev)
  38 {
  39         int i = 0;
  40         struct netdev_hw_addr *ha;
  41
  42         netdev_for_each_mc_addr(ha, dev)
  43                 memcpy(&mlist->mac_list[i++], ha->addr, ETH_ALEN);
  44
  45         return i;
  46 }
  47
  48 /*
  49  * Wait queue completion handler.
  50  *
  51  * This function waits on a cmd wait queue. It also cancels the pending
  52  * request after waking up, in case of errors.
  53  */
  54 int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
  55 {
  56         bool cancel_flag = false;
  57         int status;
  58         struct cmd_ctrl_node *cmd_queued;
  59
  60         if (!adapter->cmd_queued)
  61                 return 0;
  62
  63         cmd_queued = adapter->cmd_queued;
  64         adapter->cmd_queued = NULL;
  65
  66         dev_dbg(adapter->dev, "cmd pending\n");
  67         atomic_inc(&adapter->cmd_pending);
  68
  69         /* Status pending, wake up main process */
  70         queue_work(adapter->workqueue, &adapter->main_work);
  71
  72         /* Wait for completion */
  73         wait_event_interruptible(adapter->cmd_wait_q.wait,
  74                                         *(cmd_queued->condition));
  75         if (!*(cmd_queued->condition))
  76                 cancel_flag = true;
  77
  78         if (cancel_flag) {
  79                 mwifiex_cancel_pending_ioctl(adapter);
  80                 dev_dbg(adapter->dev, "cmd cancel\n");
  81         }
  82
  83         status = adapter->cmd_wait_q.status;
  84         adapter->cmd_wait_q.status = 0;
  85
  86         return status;
  87 }
  88
  89 /*
  90  * This function prepares the correct firmware command and
  91  * issues it to set the multicast list.
  92  *
  93  * This function can be used to enable promiscuous mode, or enable all
  94  * multicast packets, or to enable selective multicast.
  95  */
  96 int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
  97                                 struct mwifiex_multicast_list *mcast_list)
  98 {
  99         int ret = 0;
 100         u16 old_pkt_filter;
 101
 102         old_pkt_filter = priv->curr_pkt_filter;
 103
 104         if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
 105                 dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
 106                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 107                 priv->curr_pkt_filter &=
 108                         ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 109         } else {
 110                 /* Multicast */
 111                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
 112                 if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
 113                         dev_dbg(priv->adapter->dev,
 114                                 "info: Enabling All Multicast!\n");
 115                         priv->curr_pkt_filter |=
 116                                 HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 117                 } else {
 118                         priv->curr_pkt_filter &=
 119                                 ~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
 120                         if (mcast_list->num_multicast_addr) {
 121                                 dev_dbg(priv->adapter->dev,
 122                                         "info: Set multicast list=%d\n",
 123                                        mcast_list->num_multicast_addr);
 124                                 /* Set multicast addresses to firmware */
 125                                 if (old_pkt_filter == priv->curr_pkt_filter) {
 126                                         /* Send request to firmware */
 127                                         ret = mwifiex_send_cmd_async(priv,
 128                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 129                                                 HostCmd_ACT_GEN_SET, 0,
 130                                                 mcast_list);
 131                                 } else {
 132                                         /* Send request to firmware */
 133                                         ret = mwifiex_send_cmd_async(priv,
 134                                                 HostCmd_CMD_MAC_MULTICAST_ADR,
 135                                                 HostCmd_ACT_GEN_SET, 0,
 136                                                 mcast_list);
 137                                 }
 138                         }
 139                 }
 140         }
 141         dev_dbg(priv->adapter->dev,
 142                 "info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
 143                old_pkt_filter, priv->curr_pkt_filter);
 144         if (old_pkt_filter != priv->curr_pkt_filter) {
 145                 ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
 146                                              HostCmd_ACT_GEN_SET,
 147                                              0, &priv->curr_pkt_filter);
 148         }
 149
 150         return ret;
 151 }
 152
 153 /*
 154  * This function fills bss descriptor structure using provided
 155  * information.
 156  */
 157 int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
 158                               u8 *bssid, s32 rssi, u8 *ie_buf,
 159                               size_t ie_len, u16 beacon_period,
 160                               u16 cap_info_bitmap, u8 band,
 161                               struct mwifiex_bssdescriptor *bss_desc)
 162 {
 163         int ret;
 164
 165         memcpy(bss_desc->mac_address, bssid, ETH_ALEN);
 166         bss_desc->rssi = rssi;
 167         bss_desc->beacon_buf = ie_buf;
 168         bss_desc->beacon_buf_size = ie_len;
 169         bss_desc->beacon_period = beacon_period;
 170         bss_desc->cap_info_bitmap = cap_info_bitmap;
 171         bss_desc->bss_band = band;
 172         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
 173                 dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
 174                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
 175         } else {
 176                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
 177         }
 178         if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
 179                 bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
 180         else
 181                 bss_desc->bss_mode = NL80211_IFTYPE_STATION;
 182
 183         ret = mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc,
 184                                               ie_buf, ie_len);
 185
 186         return ret;
 187 }
 188
 189 /*
 190  * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 191  * In both Ad-Hoc and infra mode, an deauthentication is performed
 192  * first.
 193  */
 194 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
 195                       struct mwifiex_802_11_ssid *req_ssid)
 196 {
 197         int ret;
 198         struct mwifiex_adapter *adapter = priv->adapter;
 199         struct mwifiex_bssdescriptor *bss_desc = NULL;
 200         u8 *beacon_ie = NULL;
 201
 202         priv->scan_block = false;
 203
 204         if (bss) {
 205                 /* Allocate and fill new bss descriptor */
 206                 bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
 207                                 GFP_KERNEL);
 208                 if (!bss_desc) {
 209                         dev_err(priv->adapter->dev, " failed to alloc bss_desc\n");
 210                         return -ENOMEM;
 211                 }
 212
 213                 beacon_ie = kmemdup(bss->information_elements,
 214                                         bss->len_beacon_ies, GFP_KERNEL);
 215                 if (!beacon_ie) {
 216                         kfree(bss_desc);
 217                         dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
 218                         return -ENOMEM;
 219                 }
 220
 221                 ret = mwifiex_fill_new_bss_desc(priv, bss->bssid, bss->signal,
 222                                                 beacon_ie, bss->len_beacon_ies,
 223                                                 bss->beacon_interval,
 224                                                 bss->capability,
 225                                                 *(u8 *)bss->priv, bss_desc);
 226                 if (ret)
 227                         goto done;
 228         }
 229
 230         if (priv->bss_mode == NL80211_IFTYPE_STATION) {
 231                 /* Infra mode */
 232                 ret = mwifiex_deauthenticate(priv, NULL);
 233                 if (ret)
 234                         goto done;
 235
 236                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 237                 if (ret)
 238                         goto done;
 239
 240                 dev_dbg(adapter->dev, "info: SSID found in scan list ... "
 241                                       "associating...\n");
 242
 243                 if (!netif_queue_stopped(priv->netdev))
 244                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 245                 if (netif_carrier_ok(priv->netdev))
 246                         netif_carrier_off(priv->netdev);
 247
 248                 /* Clear any past association response stored for
 249                  * application retrieval */
 250                 priv->assoc_rsp_size = 0;
 251                 ret = mwifiex_associate(priv, bss_desc);
 252                 if (bss)
 253                         cfg80211_put_bss(bss);
 254         } else {
 255                 /* Adhoc mode */
 256                 /* If the requested SSID matches current SSID, return */
 257                 if (bss_desc && bss_desc->ssid.ssid_len &&
 258                     (!mwifiex_ssid_cmp
 259                      (&priv->curr_bss_params.bss_descriptor.ssid,
 260                       &bss_desc->ssid))) {
 261                         kfree(bss_desc);
 262                         kfree(beacon_ie);
 263                         return 0;
 264                 }
 265
 266                 /* Exit Adhoc mode first */
 267                 dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
 268                 ret = mwifiex_deauthenticate(priv, NULL);
 269                 if (ret)
 270                         goto done;
 271
 272                 priv->adhoc_is_link_sensed = false;
 273
 274                 ret = mwifiex_check_network_compatibility(priv, bss_desc);
 275
 276                 if (!netif_queue_stopped(priv->netdev))
 277                         mwifiex_stop_net_dev_queue(priv->netdev, adapter);
 278                 if (netif_carrier_ok(priv->netdev))
 279                         netif_carrier_off(priv->netdev);
 280
 281                 if (!ret) {
 282                         dev_dbg(adapter->dev, "info: network found in scan"
 283                                                         " list. Joining...\n");
 284                         ret = mwifiex_adhoc_join(priv, bss_desc);
 285                         if (bss)
 286                                 cfg80211_put_bss(bss);
 287                 } else {
 288                         dev_dbg(adapter->dev, "info: Network not found in "
 289                                 "the list, creating adhoc with ssid = %s\n",
 290                                 req_ssid->ssid);
 291                         ret = mwifiex_adhoc_start(priv, req_ssid);
 292                 }
 293         }
 294
 295 done:
 296         kfree(bss_desc);
 297         kfree(beacon_ie);
 298         return ret;
 299 }
 300
 301 /*
 302  * IOCTL request handler to set host sleep configuration.
 303  *
 304  * This function prepares the correct firmware command and
 305  * issues it.
 306  */
 307 static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
 308                                  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
 309
 310 {
 311         struct mwifiex_adapter *adapter = priv->adapter;
 312         int status = 0;
 313         u32 prev_cond = 0;
 314
 315         if (!hs_cfg)
 316                 return -ENOMEM;
 317
 318         switch (action) {
 319         case HostCmd_ACT_GEN_SET:
 320                 if (adapter->pps_uapsd_mode) {
 321                         dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
 322                                 " is blocked in UAPSD/PPS mode\n");
 323                         status = -1;
 324                         break;
 325                 }
 326                 if (hs_cfg->is_invoke_hostcmd) {
 327                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
 328                                 if (!adapter->is_hs_configured)
 329                                         /* Already cancelled */
 330                                         break;
 331                                 /* Save previous condition */
 332                                 prev_cond = le32_to_cpu(adapter->hs_cfg
 333                                                         .conditions);
 334                                 adapter->hs_cfg.conditions =
 335                                                 cpu_to_le32(hs_cfg->conditions);
 336                         } else if (hs_cfg->conditions) {
 337                                 adapter->hs_cfg.conditions =
 338                                                 cpu_to_le32(hs_cfg->conditions);
 339                                 adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 340                                 if (hs_cfg->gap)
 341                                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 342                         } else if (adapter->hs_cfg.conditions ==
 343                                                 cpu_to_le32(
 344                                                 HOST_SLEEP_CFG_CANCEL)) {
 345                                 /* Return failure if no parameters for HS
 346                                    enable */
 347                                 status = -1;
 348                                 break;
 349                         }
 350                         if (cmd_type == MWIFIEX_SYNC_CMD)
 351                                 status = mwifiex_send_cmd_sync(priv,
 352                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 353                                                 HostCmd_ACT_GEN_SET, 0,
 354                                                 &adapter->hs_cfg);
 355                         else
 356                                 status = mwifiex_send_cmd_async(priv,
 357                                                 HostCmd_CMD_802_11_HS_CFG_ENH,
 358                                                 HostCmd_ACT_GEN_SET, 0,
 359                                                 &adapter->hs_cfg);
 360                         if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
 361                                 /* Restore previous condition */
 362                                 adapter->hs_cfg.conditions =
 363                                                 cpu_to_le32(prev_cond);
 364                 } else {
 365                         adapter->hs_cfg.conditions =
 366                                 cpu_to_le32(hs_cfg->conditions);
 367                         adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
 368                         adapter->hs_cfg.gap = (u8)hs_cfg->gap;
 369                 }
 370                 break;
 371         case HostCmd_ACT_GEN_GET:
 372                 hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
 373                 hs_cfg->gpio = adapter->hs_cfg.gpio;
 374                 hs_cfg->gap = adapter->hs_cfg.gap;
 375                 break;
 376         default:
 377                 status = -1;
 378                 break;
 379         }
 380
 381         return status;
 382 }
 383
 384 /*
 385  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 386  *
 387  * This function allocates the IOCTL request buffer, fills it
 388  * with requisite parameters and calls the IOCTL handler.
 389  */
 390 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
 391 {
 392         struct mwifiex_ds_hs_cfg hscfg;
 393
 394         hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
 395         hscfg.is_invoke_hostcmd = true;
 396
 397         return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 398                                     cmd_type, &hscfg);
 399 }
 400 EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);
 401
 402 /*
 403  * Sends IOCTL request to cancel the existing Host Sleep configuration.
 404  *
 405  * This function allocates the IOCTL request buffer, fills it
 406  * with requisite parameters and calls the IOCTL handler.
 407  */
 408 int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 409 {
 410         struct mwifiex_ds_hs_cfg hscfg;
 411
 412         if (adapter->hs_activated) {
 413                 dev_dbg(adapter->dev, "cmd: HS Already actived\n");
 414                 return true;
 415         }
 416
 417         adapter->hs_activate_wait_q_woken = false;
 418
 419         memset(&hscfg, 0, sizeof(struct mwifiex_hs_config_param));
 420         hscfg.is_invoke_hostcmd = true;
 421
 422         if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
 423                                                        MWIFIEX_BSS_ROLE_STA),
 424                                   HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
 425                                   &hscfg)) {
 426                 dev_err(adapter->dev, "IOCTL request HS enable failed\n");
 427                 return false;
 428         }
 429
 430         wait_event_interruptible(adapter->hs_activate_wait_q,
 431                         adapter->hs_activate_wait_q_woken);
 432
 433         return true;
 434 }
 435 EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
 436
 437 /*
 438  * IOCTL request handler to get BSS information.
 439  *
 440  * This function collates the information from different driver structures
 441  * to send to the user.
 442  */
 443 int mwifiex_get_bss_info(struct mwifiex_private *priv,
 444                          struct mwifiex_bss_info *info)
 445 {
 446         struct mwifiex_adapter *adapter = priv->adapter;
 447         struct mwifiex_bssdescriptor *bss_desc;
 448
 449         if (!info)
 450                 return -1;
 451
 452         bss_desc = &priv->curr_bss_params.bss_descriptor;
 453
 454         info->bss_mode = priv->bss_mode;
 455
 456         memcpy(&info->ssid, &bss_desc->ssid,
 457                sizeof(struct mwifiex_802_11_ssid));
 458
 459         memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
 460
 461         info->bss_chan = bss_desc->channel;
 462
 463         info->region_code = adapter->region_code;
 464
 465         info->media_connected = priv->media_connected;
 466
 467         info->max_power_level = priv->max_tx_power_level;
 468         info->min_power_level = priv->min_tx_power_level;
 469
 470         info->adhoc_state = priv->adhoc_state;
 471
 472         info->bcn_nf_last = priv->bcn_nf_last;
 473
 474         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
 475                 info->wep_status = true;
 476         else
 477                 info->wep_status = false;
 478
 479         info->is_hs_configured = adapter->is_hs_configured;
 480         info->is_deep_sleep = adapter->is_deep_sleep;
 481
 482         return 0;
 483 }
 484
 485 /*
 486  * The function disables auto deep sleep mode.
 487  */
 488 int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
 489 {
 490         struct mwifiex_ds_auto_ds auto_ds;
 491
 492         auto_ds.auto_ds = DEEP_SLEEP_OFF;
 493
 494         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 495                                      DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
 496 }
 497 EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
 498
 499 /*
 500  * IOCTL request handler to set/get active channel.
 501  *
 502  * This function performs validity checking on channel/frequency
 503  * compatibility and returns failure if not valid.
 504  */
 505 int mwifiex_bss_set_channel(struct mwifiex_private *priv,
 506                             struct mwifiex_chan_freq_power *chan)
 507 {
 508         struct mwifiex_adapter *adapter = priv->adapter;
 509         struct mwifiex_chan_freq_power *cfp = NULL;
 510
 511         if (!chan)
 512                 return -1;
 513
 514         if (!chan->channel && !chan->freq)
 515                 return -1;
 516         if (adapter->adhoc_start_band & BAND_AN)
 517                 adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
 518         else if (adapter->adhoc_start_band & BAND_A)
 519                 adapter->adhoc_start_band = BAND_G | BAND_B;
 520         if (chan->channel) {
 521                 if (chan->channel <= MAX_CHANNEL_BAND_BG)
 522                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 523                                         (priv, 0, (u16) chan->channel);
 524                 if (!cfp) {
 525                         cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
 526                                         (priv, BAND_A, (u16) chan->channel);
 527                         if (cfp) {
 528                                 if (adapter->adhoc_11n_enabled)
 529                                         adapter->adhoc_start_band = BAND_A
 530                                                 | BAND_AN;
 531                                 else
 532                                         adapter->adhoc_start_band = BAND_A;
 533                         }
 534                 }
 535         } else {
 536                 if (chan->freq <= MAX_FREQUENCY_BAND_BG)
 537                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211(
 538                                                         priv, 0, chan->freq);
 539                 if (!cfp) {
 540                         cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211
 541                                                   (priv, BAND_A, chan->freq);
 542                         if (cfp) {
 543                                 if (adapter->adhoc_11n_enabled)
 544                                         adapter->adhoc_start_band = BAND_A
 545                                                 | BAND_AN;
 546                                 else
 547                                         adapter->adhoc_start_band = BAND_A;
 548                         }
 549                 }
 550         }
 551         if (!cfp || !cfp->channel) {
 552                 dev_err(adapter->dev, "invalid channel/freq\n");
 553                 return -1;
 554         }
 555         priv->adhoc_channel = (u8) cfp->channel;
 556         chan->channel = cfp->channel;
 557         chan->freq = cfp->freq;
 558
 559         return 0;
 560 }
 561
 562 /*
 563  * IOCTL request handler to set/get Ad-Hoc channel.
 564  *
 565  * This function prepares the correct firmware command and
 566  * issues it to set or get the ad-hoc channel.
 567  */
 568 static int mwifiex_bss_ioctl_ibss_channel(struct mwifiex_private *priv,
 569                                           u16 action, u16 *channel)
 570 {
 571         if (action == HostCmd_ACT_GEN_GET) {
 572                 if (!priv->media_connected) {
 573                         *channel = priv->adhoc_channel;
 574                         return 0;
 575                 }
 576         } else {
 577                 priv->adhoc_channel = (u8) *channel;
 578         }
 579
 580         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_RF_CHANNEL,
 581                                     action, 0, channel);
 582 }
 583
 584 /*
 585  * IOCTL request handler to change Ad-Hoc channel.
 586  *
 587  * This function allocates the IOCTL request buffer, fills it
 588  * with requisite parameters and calls the IOCTL handler.
 589  *
 590  * The function follows the following steps to perform the change -
 591  *      - Get current IBSS information
 592  *      - Get current channel
 593  *      - If no change is required, return
 594  *      - If not connected, change channel and return
 595  *      - If connected,
 596  *          - Disconnect
 597  *          - Change channel
 598  *          - Perform specific SSID scan with same SSID
 599  *          - Start/Join the IBSS
 600  */
 601 int
 602 mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, int channel)
 603 {
 604         int ret;
 605         struct mwifiex_bss_info bss_info;
 606         struct mwifiex_ssid_bssid ssid_bssid;
 607         u16 curr_chan = 0;
 608         struct cfg80211_bss *bss = NULL;
 609         struct ieee80211_channel *chan;
 610         enum ieee80211_band band;
 611
 612         memset(&bss_info, 0, sizeof(bss_info));
 613
 614         /* Get BSS information */
 615         if (mwifiex_get_bss_info(priv, &bss_info))
 616                 return -1;
 617
 618         /* Get current channel */
 619         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
 620                                              &curr_chan);
 621
 622         if (curr_chan == channel) {
 623                 ret = 0;
 624                 goto done;
 625         }
 626         dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
 627                         curr_chan, channel);
 628
 629         if (!bss_info.media_connected) {
 630                 ret = 0;
 631                 goto done;
 632         }
 633
 634         /* Do disonnect */
 635         memset(&ssid_bssid, 0, ETH_ALEN);
 636         ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
 637
 638         ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
 639                                              (u16 *) &channel);
 640
 641         /* Do specific SSID scanning */
 642         if (mwifiex_request_scan(priv, &bss_info.ssid)) {
 643                 ret = -1;
 644                 goto done;
 645         }
 646
 647         band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
 648         chan = __ieee80211_get_channel(priv->wdev->wiphy,
 649                         ieee80211_channel_to_frequency(channel, band));
 650
 651         /* Find the BSS we want using available scan results */
 652         bss = cfg80211_get_bss(priv->wdev->wiphy, chan, bss_info.bssid,
 653                                bss_info.ssid.ssid, bss_info.ssid.ssid_len,
 654                                WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
 655         if (!bss)
 656                 wiphy_warn(priv->wdev->wiphy, "assoc: bss %pM not in scan results\n",
 657                           bss_info.bssid);
 658
 659         ret = mwifiex_bss_start(priv, bss, &bss_info.ssid);
 660 done:
 661         return ret;
 662 }
 663
 664 /*
 665  * IOCTL request handler to get rate.
 666  *
 667  * This function prepares the correct firmware command and
 668  * issues it to get the current rate if it is connected,
 669  * otherwise, the function returns the lowest supported rate
 670  * for the band.
 671  */
 672 static int mwifiex_rate_ioctl_get_rate_value(struct mwifiex_private *priv,
 673                                              struct mwifiex_rate_cfg *rate_cfg)
 674 {
 675         rate_cfg->is_rate_auto = priv->is_data_rate_auto;
 676         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
 677                                      HostCmd_ACT_GEN_GET, 0, NULL);
 678 }
 679
 680 /*
 681  * IOCTL request handler to set rate.
 682  *
 683  * This function prepares the correct firmware command and
 684  * issues it to set the current rate.
 685  *
 686  * The function also performs validation checking on the supplied value.
 687  */
 688 static int mwifiex_rate_ioctl_set_rate_value(struct mwifiex_private *priv,
 689                                              struct mwifiex_rate_cfg *rate_cfg)
 690 {
 691         u8 rates[MWIFIEX_SUPPORTED_RATES];
 692         u8 *rate;
 693         int rate_index, ret;
 694         u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
 695         u32 i;
 696         struct mwifiex_adapter *adapter = priv->adapter;
 697
 698         if (rate_cfg->is_rate_auto) {
 699                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 700                 /* Support all HR/DSSS rates */
 701                 bitmap_rates[0] = 0x000F;
 702                 /* Support all OFDM rates */
 703                 bitmap_rates[1] = 0x00FF;
 704                 /* Support all HT-MCSs rate */
 705                 for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates) - 3; i++)
 706                         bitmap_rates[i + 2] = 0xFFFF;
 707                 bitmap_rates[9] = 0x3FFF;
 708         } else {
 709                 memset(rates, 0, sizeof(rates));
 710                 mwifiex_get_active_data_rates(priv, rates);
 711                 rate = rates;
 712                 for (i = 0; (rate[i] && i < MWIFIEX_SUPPORTED_RATES); i++) {
 713                         dev_dbg(adapter->dev, "info: rate=%#x wanted=%#x\n",
 714                                 rate[i], rate_cfg->rate);
 715                         if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
 716                                 break;
 717                 }
 718                 if ((i == MWIFIEX_SUPPORTED_RATES) || !rate[i]) {
 719                         dev_err(adapter->dev, "fixed data rate %#x is out "
 720                                "of range\n", rate_cfg->rate);
 721                         return -1;
 722                 }
 723                 memset(bitmap_rates, 0, sizeof(bitmap_rates));
 724
 725                 rate_index = mwifiex_data_rate_to_index(rate_cfg->rate);
 726
 727                 /* Only allow b/g rates to be set */
 728                 if (rate_index >= MWIFIEX_RATE_INDEX_HRDSSS0 &&
 729                     rate_index <= MWIFIEX_RATE_INDEX_HRDSSS3) {
 730                         bitmap_rates[0] = 1 << rate_index;
 731                 } else {
 732                         rate_index -= 1; /* There is a 0x00 in the table */
 733                         if (rate_index >= MWIFIEX_RATE_INDEX_OFDM0 &&
 734                             rate_index <= MWIFIEX_RATE_INDEX_OFDM7)
 735                                 bitmap_rates[1] = 1 << (rate_index -
 736                                                    MWIFIEX_RATE_INDEX_OFDM0);
 737                 }
 738         }
 739
 740         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
 741                                     HostCmd_ACT_GEN_SET, 0, bitmap_rates);
 742
 743         return ret;
 744 }
 745
 746 /*
 747  * IOCTL request handler to set/get rate.
 748  *
 749  * This function can be used to set/get either the rate value or the
 750  * rate index.
 751  */
 752 static int mwifiex_rate_ioctl_cfg(struct mwifiex_private *priv,
 753                                   struct mwifiex_rate_cfg *rate_cfg)
 754 {
 755         int status;
 756
 757         if (!rate_cfg)
 758                 return -1;
 759
 760         if (rate_cfg->action == HostCmd_ACT_GEN_GET)
 761                 status = mwifiex_rate_ioctl_get_rate_value(priv, rate_cfg);
 762         else
 763                 status = mwifiex_rate_ioctl_set_rate_value(priv, rate_cfg);
 764
 765         return status;
 766 }
 767
 768 /*
 769  * Sends IOCTL request to get the data rate.
 770  *
 771  * This function allocates the IOCTL request buffer, fills it
 772  * with requisite parameters and calls the IOCTL handler.
 773  */
 774 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,
 775                               struct mwifiex_rate_cfg *rate)
 776 {
 777         int ret;
 778
 779         memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
 780         rate->action = HostCmd_ACT_GEN_GET;
 781         ret = mwifiex_rate_ioctl_cfg(priv, rate);
 782
 783         if (!ret) {
 784                 if (rate->is_rate_auto)
 785                         rate->rate = mwifiex_index_to_data_rate(priv,
 786                                         priv->tx_rate, priv->tx_htinfo);
 787                 else
 788                         rate->rate = priv->data_rate;
 789         } else {
 790                 ret = -1;
 791         }
 792
 793         return ret;
 794 }
 795
 796 /*
 797  * IOCTL request handler to set tx power configuration.
 798  *
 799  * This function prepares the correct firmware command and
 800  * issues it.
 801  *
 802  * For non-auto power mode, all the following power groups are set -
 803  *      - Modulation class HR/DSSS
 804  *      - Modulation class OFDM
 805  *      - Modulation class HTBW20
 806  *      - Modulation class HTBW40
 807  */
 808 int mwifiex_set_tx_power(struct mwifiex_private *priv,
 809                          struct mwifiex_power_cfg *power_cfg)
 810 {
 811         int ret;
 812         struct host_cmd_ds_txpwr_cfg *txp_cfg;
 813         struct mwifiex_types_power_group *pg_tlv;
 814         struct mwifiex_power_group *pg;
 815         u8 *buf;
 816         u16 dbm = 0;
 817
 818         if (!power_cfg->is_power_auto) {
 819                 dbm = (u16) power_cfg->power_level;
 820                 if ((dbm < priv->min_tx_power_level) ||
 821                     (dbm > priv->max_tx_power_level)) {
 822                         dev_err(priv->adapter->dev, "txpower value %d dBm"
 823                                         " is out of range (%d dBm-%d dBm)\n",
 824                                         dbm, priv->min_tx_power_level,
 825                                         priv->max_tx_power_level);
 826                         return -1;
 827                 }
 828         }
 829         buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
 830         if (!buf) {
 831                 dev_err(priv->adapter->dev, "%s: failed to alloc cmd buffer\n",
 832                                 __func__);
 833                 return -ENOMEM;
 834         }
 835
 836         txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
 837         txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
 838         if (!power_cfg->is_power_auto) {
 839                 txp_cfg->mode = cpu_to_le32(1);
 840                 pg_tlv = (struct mwifiex_types_power_group *) (buf +
 841                                 sizeof(struct host_cmd_ds_txpwr_cfg));
 842                 pg_tlv->type = TLV_TYPE_POWER_GROUP;
 843                 pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
 844                 pg = (struct mwifiex_power_group *) (buf +
 845                                 sizeof(struct host_cmd_ds_txpwr_cfg) +
 846                                 sizeof(struct mwifiex_types_power_group));
 847                 /* Power group for modulation class HR/DSSS */
 848                 pg->first_rate_code = 0x00;
 849                 pg->last_rate_code = 0x03;
 850                 pg->modulation_class = MOD_CLASS_HR_DSSS;
 851                 pg->power_step = 0;
 852                 pg->power_min = (s8) dbm;
 853                 pg->power_max = (s8) dbm;
 854                 pg++;
 855                 /* Power group for modulation class OFDM */
 856                 pg->first_rate_code = 0x00;
 857                 pg->last_rate_code = 0x07;
 858                 pg->modulation_class = MOD_CLASS_OFDM;
 859                 pg->power_step = 0;
 860                 pg->power_min = (s8) dbm;
 861                 pg->power_max = (s8) dbm;
 862                 pg++;
 863                 /* Power group for modulation class HTBW20 */
 864                 pg->first_rate_code = 0x00;
 865                 pg->last_rate_code = 0x20;
 866                 pg->modulation_class = MOD_CLASS_HT;
 867                 pg->power_step = 0;
 868                 pg->power_min = (s8) dbm;
 869                 pg->power_max = (s8) dbm;
 870                 pg->ht_bandwidth = HT_BW_20;
 871                 pg++;
 872                 /* Power group for modulation class HTBW40 */
 873                 pg->first_rate_code = 0x00;
 874                 pg->last_rate_code = 0x20;
 875                 pg->modulation_class = MOD_CLASS_HT;
 876                 pg->power_step = 0;
 877                 pg->power_min = (s8) dbm;
 878                 pg->power_max = (s8) dbm;
 879                 pg->ht_bandwidth = HT_BW_40;
 880         }
 881         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
 882                                     HostCmd_ACT_GEN_SET, 0, buf);
 883
 884         kfree(buf);
 885         return ret;
 886 }
 887
 888 /*
 889  * IOCTL request handler to get power save mode.
 890  *
 891  * This function prepares the correct firmware command and
 892  * issues it.
 893  */
 894 int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
 895 {
 896         int ret;
 897         struct mwifiex_adapter *adapter = priv->adapter;
 898         u16 sub_cmd;
 899
 900         if (*ps_mode)
 901                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
 902         else
 903                 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
 904         sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
 905         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
 906                                     sub_cmd, BITMAP_STA_PS, NULL);
 907         if ((!ret) && (sub_cmd == DIS_AUTO_PS))
 908                 ret = mwifiex_send_cmd_async(priv,
 909                                 HostCmd_CMD_802_11_PS_MODE_ENH, GET_PS,
 910                                 0, NULL);
 911
 912         return ret;
 913 }
 914
 915 /*
 916  * IOCTL request handler to set/reset WPA IE.
 917  *
 918  * The supplied WPA IE is treated as a opaque buffer. Only the first field
 919  * is checked to determine WPA version. If buffer length is zero, the existing
 920  * WPA IE is reset.
 921  */
 922 static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
 923                                      u8 *ie_data_ptr, u16 ie_len)
 924 {
 925         if (ie_len) {
 926                 if (ie_len > sizeof(priv->wpa_ie)) {
 927                         dev_err(priv->adapter->dev,
 928                                 "failed to copy WPA IE, too big\n");
 929                         return -1;
 930                 }
 931                 memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
 932                 priv->wpa_ie_len = (u8) ie_len;
 933                 dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
 934                                 priv->wpa_ie_len, priv->wpa_ie[0]);
 935
 936                 if (priv->wpa_ie[0] == WLAN_EID_WPA) {
 937                         priv->sec_info.wpa_enabled = true;
 938                 } else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
 939                         priv->sec_info.wpa2_enabled = true;
 940                 } else {
 941                         priv->sec_info.wpa_enabled = false;
 942                         priv->sec_info.wpa2_enabled = false;
 943                 }
 944         } else {
 945                 memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
 946                 priv->wpa_ie_len = 0;
 947                 dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
 948                         priv->wpa_ie_len, priv->wpa_ie[0]);
 949                 priv->sec_info.wpa_enabled = false;
 950                 priv->sec_info.wpa2_enabled = false;
 951         }
 952
 953         return 0;
 954 }
 955
 956 /*
 957  * IOCTL request handler to set/reset WAPI IE.
 958  *
 959  * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 960  * is checked to internally enable WAPI. If buffer length is zero, the existing
 961  * WAPI IE is reset.
 962  */
 963 static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
 964                                u8 *ie_data_ptr, u16 ie_len)
 965 {
 966         if (ie_len) {
 967                 if (ie_len > sizeof(priv->wapi_ie)) {
 968                         dev_dbg(priv->adapter->dev,
 969                                 "info: failed to copy WAPI IE, too big\n");
 970                         return -1;
 971                 }
 972                 memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
 973                 priv->wapi_ie_len = ie_len;
 974                 dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
 975                                 priv->wapi_ie_len, priv->wapi_ie[0]);
 976
 977                 if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
 978                         priv->sec_info.wapi_enabled = true;
 979         } else {
 980                 memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
 981                 priv->wapi_ie_len = ie_len;
 982                 dev_dbg(priv->adapter->dev,
 983                         "info: Reset wapi_ie_len=%d IE=%#x\n",
 984                        priv->wapi_ie_len, priv->wapi_ie[0]);
 985                 priv->sec_info.wapi_enabled = false;
 986         }
 987         return 0;
 988 }
 989
 990 /*
 991  * IOCTL request handler to set WAPI key.
 992  *
 993  * This function prepares the correct firmware command and
 994  * issues it.
 995  */
 996 static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
 997                                struct mwifiex_ds_encrypt_key *encrypt_key)
 998 {
 999
1000         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
1001                                     HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1002                                     encrypt_key);
1003 }
1004
1005 /*
1006  * IOCTL request handler to set WEP network key.
1007  *
1008  * This function prepares the correct firmware command and
1009  * issues it, after validation checks.
1010  */
1011 static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
1012                               struct mwifiex_ds_encrypt_key *encrypt_key)
1013 {
1014         int ret;
1015         struct mwifiex_wep_key *wep_key;
1016         int index;
1017
1018         if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
1019                 priv->wep_key_curr_index = 0;
1020         wep_key = &priv->wep_key[priv->wep_key_curr_index];
1021         index = encrypt_key->key_index;
1022         if (encrypt_key->key_disable) {
1023                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_DISABLED;
1024         } else if (!encrypt_key->key_len) {
1025                 /* Copy the required key as the current key */
1026                 wep_key = &priv->wep_key[index];
1027                 if (!wep_key->key_length) {
1028                         dev_err(priv->adapter->dev,
1029                                 "key not set, so cannot enable it\n");
1030                         return -1;
1031                 }
1032                 priv->wep_key_curr_index = (u16) index;
1033                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1034         } else {
1035                 wep_key = &priv->wep_key[index];
1036                 memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
1037                 /* Copy the key in the driver */
1038                 memcpy(wep_key->key_material,
1039                        encrypt_key->key_material,
1040                        encrypt_key->key_len);
1041                 wep_key->key_index = index;
1042                 wep_key->key_length = encrypt_key->key_len;
1043                 priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
1044         }
1045         if (wep_key->key_length) {
1046                 /* Send request to firmware */
1047                 ret = mwifiex_send_cmd_async(priv,
1048                                              HostCmd_CMD_802_11_KEY_MATERIAL,
1049                                              HostCmd_ACT_GEN_SET, 0, NULL);
1050                 if (ret)
1051                         return ret;
1052         }
1053         if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
1054                 priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
1055         else
1056                 priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
1057
1058         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
1059                                     HostCmd_ACT_GEN_SET, 0,
1060                                     &priv->curr_pkt_filter);
1061
1062         return ret;
1063 }
1064
1065 /*
1066  * IOCTL request handler to set WPA key.
1067  *
1068  * This function prepares the correct firmware command and
1069  * issues it, after validation checks.
1070  *
1071  * Current driver only supports key length of up to 32 bytes.
1072  *
1073  * This function can also be used to disable a currently set key.
1074  */
1075 static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
1076                               struct mwifiex_ds_encrypt_key *encrypt_key)
1077 {
1078         int ret;
1079         u8 remove_key = false;
1080         struct host_cmd_ds_802_11_key_material *ibss_key;
1081
1082         /* Current driver only supports key length of up to 32 bytes */
1083         if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
1084                 dev_err(priv->adapter->dev, "key length too long\n");
1085                 return -1;
1086         }
1087
1088         if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1089                 /*
1090                  * IBSS/WPA-None uses only one key (Group) for both receiving
1091                  * and sending unicast and multicast packets.
1092                  */
1093                 /* Send the key as PTK to firmware */
1094                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1095                 ret = mwifiex_send_cmd_async(priv,
1096                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1097                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1098                                         encrypt_key);
1099                 if (ret)
1100                         return ret;
1101
1102                 ibss_key = &priv->aes_key;
1103                 memset(ibss_key, 0,
1104                        sizeof(struct host_cmd_ds_802_11_key_material));
1105                 /* Copy the key in the driver */
1106                 memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
1107                        encrypt_key->key_len);
1108                 memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
1109                        sizeof(ibss_key->key_param_set.key_len));
1110                 ibss_key->key_param_set.key_type_id
1111                         = cpu_to_le16(KEY_TYPE_ID_TKIP);
1112                 ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
1113
1114                 /* Send the key as GTK to firmware */
1115                 encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
1116         }
1117
1118         if (!encrypt_key->key_index)
1119                 encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1120
1121         if (remove_key)
1122                 ret = mwifiex_send_cmd_sync(priv,
1123                                        HostCmd_CMD_802_11_KEY_MATERIAL,
1124                                        HostCmd_ACT_GEN_SET, !(KEY_INFO_ENABLED),
1125                                        encrypt_key);
1126         else
1127                 ret = mwifiex_send_cmd_sync(priv,
1128                                         HostCmd_CMD_802_11_KEY_MATERIAL,
1129                                         HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
1130                                         encrypt_key);
1131
1132         return ret;
1133 }
1134
1135 /*
1136  * IOCTL request handler to set/get network keys.
1137  *
1138  * This is a generic key handling function which supports WEP, WPA
1139  * and WAPI.
1140  */
1141 static int
1142 mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
1143                               struct mwifiex_ds_encrypt_key *encrypt_key)
1144 {
1145         int status;
1146
1147         if (encrypt_key->is_wapi_key)
1148                 status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1149         else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1150                 status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1151         else
1152                 status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
1153         return status;
1154 }
1155
1156 /*
1157  * This function returns the driver version.
1158  */
1159 int
1160 mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
1161                                int max_len)
1162 {
1163         union {
1164                 u32 l;
1165                 u8 c[4];
1166         } ver;
1167         char fw_ver[32];
1168
1169         ver.l = adapter->fw_release_number;
1170         sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);
1171
1172         snprintf(version, max_len, driver_version, fw_ver);
1173
1174         dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);
1175
1176         return 0;
1177 }
1178
1179 /*
1180  * Sends IOCTL request to get signal information.
1181  *
1182  * This function allocates the IOCTL request buffer, fills it
1183  * with requisite parameters and calls the IOCTL handler.
1184  */
1185 int mwifiex_get_signal_info(struct mwifiex_private *priv,
1186                             struct mwifiex_ds_get_signal *signal)
1187 {
1188         int status;
1189
1190         signal->selector = ALL_RSSI_INFO_MASK;
1191
1192         /* Signal info can be obtained only if connected */
1193         if (!priv->media_connected) {
1194                 dev_dbg(priv->adapter->dev,
1195                         "info: Can not get signal in disconnected state\n");
1196                 return -1;
1197         }
1198
1199         status = mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
1200                                        HostCmd_ACT_GEN_GET, 0, signal);
1201
1202         if (!status) {
1203                 if (signal->selector & BCN_RSSI_AVG_MASK)
1204                         priv->qual_level = signal->bcn_rssi_avg;
1205                 if (signal->selector & BCN_NF_AVG_MASK)
1206                         priv->qual_noise = signal->bcn_nf_avg;
1207         }
1208
1209         return status;
1210 }
1211
1212 /*
1213  * Sends IOCTL request to set encoding parameters.
1214  *
1215  * This function allocates the IOCTL request buffer, fills it
1216  * with requisite parameters and calls the IOCTL handler.
1217  */
1218 int mwifiex_set_encode(struct mwifiex_private *priv, const u8 *key,
1219                         int key_len, u8 key_index, int disable)
1220 {
1221         struct mwifiex_ds_encrypt_key encrypt_key;
1222
1223         memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
1224         encrypt_key.key_len = key_len;
1225         if (!disable) {
1226                 encrypt_key.key_index = key_index;
1227                 if (key_len)
1228                         memcpy(encrypt_key.key_material, key, key_len);
1229         } else {
1230                 encrypt_key.key_disable = true;
1231         }
1232
1233         return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
1234 }
1235
1236 /*
1237  * Sends IOCTL request to get extended version.
1238  *
1239  * This function allocates the IOCTL request buffer, fills it
1240  * with requisite parameters and calls the IOCTL handler.
1241  */
1242 int
1243 mwifiex_get_ver_ext(struct mwifiex_private *priv)
1244 {
1245         struct mwifiex_ver_ext ver_ext;
1246
1247         memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1248         if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1249                                     HostCmd_ACT_GEN_GET, 0, &ver_ext))
1250                 return -1;
1251
1252         return 0;
1253 }
1254
1255 /*
1256  * Sends IOCTL request to get statistics information.
1257  *
1258  * This function allocates the IOCTL request buffer, fills it
1259  * with requisite parameters and calls the IOCTL handler.
1260  */
1261 int
1262 mwifiex_get_stats_info(struct mwifiex_private *priv,
1263                        struct mwifiex_ds_get_stats *log)
1264 {
1265         return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1266                                     HostCmd_ACT_GEN_GET, 0, log);
1267 }
1268
1269 /*
1270  * IOCTL request handler to read/write register.
1271  *
1272  * This function prepares the correct firmware command and
1273  * issues it.
1274  *
1275  * Access to the following registers are supported -
1276  *      - MAC
1277  *      - BBP
1278  *      - RF
1279  *      - PMIC
1280  *      - CAU
1281  */
1282 static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
1283                                         struct mwifiex_ds_reg_rw *reg_rw,
1284                                         u16 action)
1285 {
1286         u16 cmd_no;
1287
1288         switch (le32_to_cpu(reg_rw->type)) {
1289         case MWIFIEX_REG_MAC:
1290                 cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
1291                 break;
1292         case MWIFIEX_REG_BBP:
1293                 cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
1294                 break;
1295         case MWIFIEX_REG_RF:
1296                 cmd_no = HostCmd_CMD_RF_REG_ACCESS;
1297                 break;
1298         case MWIFIEX_REG_PMIC:
1299                 cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
1300                 break;
1301         case MWIFIEX_REG_CAU:
1302                 cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
1303                 break;
1304         default:
1305                 return -1;
1306         }
1307
1308         return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
1309
1310 }
1311
1312 /*
1313  * Sends IOCTL request to write to a register.
1314  *
1315  * This function allocates the IOCTL request buffer, fills it
1316  * with requisite parameters and calls the IOCTL handler.
1317  */
1318 int
1319 mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
1320                   u32 reg_offset, u32 reg_value)
1321 {
1322         struct mwifiex_ds_reg_rw reg_rw;
1323
1324         reg_rw.type = cpu_to_le32(reg_type);
1325         reg_rw.offset = cpu_to_le32(reg_offset);
1326         reg_rw.value = cpu_to_le32(reg_value);
1327
1328         return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
1329 }
1330
1331 /*
1332  * Sends IOCTL request to read from a register.
1333  *
1334  * This function allocates the IOCTL request buffer, fills it
1335  * with requisite parameters and calls the IOCTL handler.
1336  */
1337 int
1338 mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
1339                  u32 reg_offset, u32 *value)
1340 {
1341         int ret;
1342         struct mwifiex_ds_reg_rw reg_rw;
1343
1344         reg_rw.type = cpu_to_le32(reg_type);
1345         reg_rw.offset = cpu_to_le32(reg_offset);
1346         ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
1347
1348         if (ret)
1349                 goto done;
1350
1351         *value = le32_to_cpu(reg_rw.value);
1352
1353 done:
1354         return ret;
1355 }
1356
1357 /*
1358  * Sends IOCTL request to read from EEPROM.
1359  *
1360  * This function allocates the IOCTL request buffer, fills it
1361  * with requisite parameters and calls the IOCTL handler.
1362  */
1363 int
1364 mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
1365                     u8 *value)
1366 {
1367         int ret;
1368         struct mwifiex_ds_read_eeprom rd_eeprom;
1369
1370         rd_eeprom.offset = cpu_to_le16((u16) offset);
1371         rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
1372
1373         /* Send request to firmware */
1374         ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
1375                                     HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1376
1377         if (!ret)
1378                 memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
1379         return ret;
1380 }
1381
1382 /*
1383  * This function sets a generic IE. In addition to generic IE, it can
1384  * also handle WPA, WPA2 and WAPI IEs.
1385  */
1386 static int
1387 mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
1388                           u16 ie_len)
1389 {
1390         int ret = 0;
1391         struct ieee_types_vendor_header *pvendor_ie;
1392         const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
1393         const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };
1394
1395         /* If the passed length is zero, reset the buffer */
1396         if (!ie_len) {
1397                 priv->gen_ie_buf_len = 0;
1398                 priv->wps.session_enable = false;
1399
1400                 return 0;
1401         } else if (!ie_data_ptr) {
1402                 return -1;
1403         }
1404         pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1405         /* Test to see if it is a WPA IE, if not, then it is a gen IE */
1406         if (((pvendor_ie->element_id == WLAN_EID_WPA)
1407              && (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui))))
1408                         || (pvendor_ie->element_id == WLAN_EID_RSN)) {
1409
1410                 /* IE is a WPA/WPA2 IE so call set_wpa function */
1411                 ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
1412                 priv->wps.session_enable = false;
1413
1414                 return ret;
1415         } else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
1416                 /* IE is a WAPI IE so call set_wapi function */
1417                 ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);
1418
1419                 return ret;
1420         }
1421         /*
1422          * Verify that the passed length is not larger than the
1423          * available space remaining in the buffer
1424          */
1425         if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {
1426
1427                 /* Test to see if it is a WPS IE, if so, enable
1428                  * wps session flag
1429                  */
1430                 pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1431                 if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC)
1432                                 && (!memcmp(pvendor_ie->oui, wps_oui,
1433                                                 sizeof(wps_oui)))) {
1434                         priv->wps.session_enable = true;
1435                         dev_dbg(priv->adapter->dev,
1436                                 "info: WPS Session Enabled.\n");
1437                 }
1438
1439                 /* Append the passed data to the end of the
1440                    genIeBuffer */
1441                 memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1442                                                                         ie_len);
1443                 /* Increment the stored buffer length by the
1444                    size passed */
1445                 priv->gen_ie_buf_len += ie_len;
1446         } else {
1447                 /* Passed data does not fit in the remaining
1448                    buffer space */
1449                 ret = -1;
1450         }
1451
1452         /* Return 0, or -1 for error case */
1453         return ret;
1454 }
1455
1456 /*
1457  * IOCTL request handler to set/get generic IE.
1458  *
1459  * In addition to various generic IEs, this function can also be
1460  * used to set the ARP filter.
1461  */
1462 static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
1463                                      struct mwifiex_ds_misc_gen_ie *gen_ie,
1464                                      u16 action)
1465 {
1466         struct mwifiex_adapter *adapter = priv->adapter;
1467
1468         switch (gen_ie->type) {
1469         case MWIFIEX_IE_TYPE_GEN_IE:
1470                 if (action == HostCmd_ACT_GEN_GET) {
1471                         gen_ie->len = priv->wpa_ie_len;
1472                         memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
1473                 } else {
1474                         mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
1475                                                   (u16) gen_ie->len);
1476                 }
1477                 break;
1478         case MWIFIEX_IE_TYPE_ARP_FILTER:
1479                 memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
1480                 if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
1481                         adapter->arp_filter_size = 0;
1482                         dev_err(adapter->dev, "invalid ARP filter size\n");
1483                         return -1;
1484                 } else {
1485                         memcpy(adapter->arp_filter, gen_ie->ie_data,
1486                                                                 gen_ie->len);
1487                         adapter->arp_filter_size = gen_ie->len;
1488                 }
1489                 break;
1490         default:
1491                 dev_err(adapter->dev, "invalid IE type\n");
1492                 return -1;
1493         }
1494         return 0;
1495 }
1496
1497 /*
1498  * Sends IOCTL request to set a generic IE.
1499  *
1500  * This function allocates the IOCTL request buffer, fills it
1501  * with requisite parameters and calls the IOCTL handler.
1502  */
1503 int
1504 mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
1505 {
1506         struct mwifiex_ds_misc_gen_ie gen_ie;
1507
1508         if (ie_len > IEEE_MAX_IE_SIZE)
1509                 return -EFAULT;
1510
1511         gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
1512         gen_ie.len = ie_len;
1513         memcpy(gen_ie.ie_data, ie, ie_len);
1514         if (mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET))
1515                 return -EFAULT;
1516
1517         return 0;
1518 }