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cmd.c

/**
  * This file contains the handling of command.
  * It prepares command and sends it to firmware when it is ready.
  */

#include <net/iw_handler.h>
#include "host.h"
#include "hostcmd.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "join.h"
#include "wext.h"

static void cleanup_cmdnode(struct cmd_ctrl_node *ptempnode);

static u16 commands_allowed_in_ps[] = {
      CMD_802_11_RSSI,
};

/**
 *  @brief This function checks if the commans is allowed
 *  in PS mode not.
 *
 *  @param command the command ID
 *  @return          TRUE or FALSE
 */
static u8 is_command_allowed_in_ps(__le16 command)
{
      int i;

      for (i = 0; i < ARRAY_SIZE(commands_allowed_in_ps); i++) {
            if (command == cpu_to_le16(commands_allowed_in_ps[i]))
                  return 1;
      }

      return 0;
}

static int wlan_cmd_hw_spec(wlan_private * priv, struct cmd_ds_command *cmd)
{
      struct cmd_ds_get_hw_spec *hwspec = &cmd->params.hwspec;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_GET_HW_SPEC);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_get_hw_spec) + S_DS_GEN);
      memcpy(hwspec->permanentaddr, priv->adapter->current_addr, ETH_ALEN);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_ps_mode(wlan_private * priv,
                           struct cmd_ds_command *cmd,
                           u16 cmd_action)
{
      struct cmd_ds_802_11_ps_mode *psm = &cmd->params.psmode;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_PS_MODE);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ps_mode) +
                        S_DS_GEN);
      psm->action = cpu_to_le16(cmd_action);
      psm->multipledtim = 0;
      switch (cmd_action) {
      case CMD_SUBCMD_ENTER_PS:
            lbs_deb_cmd("PS command:" "SubCode- Enter PS\n");

            psm->locallisteninterval = 0;
            psm->nullpktinterval = 0;
            psm->multipledtim =
                cpu_to_le16(MRVDRV_DEFAULT_MULTIPLE_DTIM);
            break;

      case CMD_SUBCMD_EXIT_PS:
            lbs_deb_cmd("PS command:" "SubCode- Exit PS\n");
            break;

      case CMD_SUBCMD_SLEEP_CONFIRMED:
            lbs_deb_cmd("PS command: SubCode- sleep confirm\n");
            break;

      default:
            break;
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_inactivity_timeout(wlan_private * priv,
                                    struct cmd_ds_command *cmd,
                                    u16 cmd_action, void *pdata_buf)
{
      u16 *timeout = pdata_buf;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_INACTIVITY_TIMEOUT);
      cmd->size =
          cpu_to_le16(sizeof(struct cmd_ds_802_11_inactivity_timeout)
                       + S_DS_GEN);

      cmd->params.inactivity_timeout.action = cpu_to_le16(cmd_action);

      if (cmd_action)
            cmd->params.inactivity_timeout.timeout = cpu_to_le16(*timeout);
      else
            cmd->params.inactivity_timeout.timeout = 0;

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_sleep_params(wlan_private * priv,
                              struct cmd_ds_command *cmd,
                              u16 cmd_action)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_sleep_params *sp = &cmd->params.sleep_params;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->size = cpu_to_le16((sizeof(struct cmd_ds_802_11_sleep_params)) +
                        S_DS_GEN);
      cmd->command = cpu_to_le16(CMD_802_11_SLEEP_PARAMS);

      if (cmd_action == CMD_ACT_GET) {
            memset(&adapter->sp, 0, sizeof(struct sleep_params));
            memset(sp, 0, sizeof(struct cmd_ds_802_11_sleep_params));
            sp->action = cpu_to_le16(cmd_action);
      } else if (cmd_action == CMD_ACT_SET) {
            sp->action = cpu_to_le16(cmd_action);
            sp->error = cpu_to_le16(adapter->sp.sp_error);
            sp->offset = cpu_to_le16(adapter->sp.sp_offset);
            sp->stabletime = cpu_to_le16(adapter->sp.sp_stabletime);
            sp->calcontrol = (u8) adapter->sp.sp_calcontrol;
            sp->externalsleepclk = (u8) adapter->sp.sp_extsleepclk;
            sp->reserved = cpu_to_le16(adapter->sp.sp_reserved);
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_set_wep(wlan_private * priv,
                                   struct cmd_ds_command *cmd,
                                   u32 cmd_act,
                                   void * pdata_buf)
{
      struct cmd_ds_802_11_set_wep *wep = &cmd->params.wep;
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;
      struct assoc_request * assoc_req = pdata_buf;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_SET_WEP);
      cmd->size = cpu_to_le16(sizeof(*wep) + S_DS_GEN);

      if (cmd_act == CMD_ACT_ADD) {
            int i;

            if (!assoc_req) {
                  lbs_deb_cmd("Invalid association request!");
                  ret = -1;
                  goto done;
            }

            wep->action = cpu_to_le16(CMD_ACT_ADD);

            /* default tx key index */
            wep->keyindex = cpu_to_le16((u16)(assoc_req->wep_tx_keyidx &
                                      (u32)CMD_WEP_KEY_INDEX_MASK));

            /* Copy key types and material to host command structure */
            for (i = 0; i < 4; i++) {
                  struct enc_key * pkey = &assoc_req->wep_keys[i];

                  switch (pkey->len) {
                  case KEY_LEN_WEP_40:
                        wep->keytype[i] = CMD_TYPE_WEP_40_BIT;
                        memmove(&wep->keymaterial[i], pkey->key,
                                pkey->len);
                        lbs_deb_cmd("SET_WEP: add key %d (40 bit)\n", i);
                        break;
                  case KEY_LEN_WEP_104:
                        wep->keytype[i] = CMD_TYPE_WEP_104_BIT;
                        memmove(&wep->keymaterial[i], pkey->key,
                                pkey->len);
                        lbs_deb_cmd("SET_WEP: add key %d (104 bit)\n", i);
                        break;
                  case 0:
                        break;
                  default:
                        lbs_deb_cmd("SET_WEP: invalid key %d, length %d\n",
                               i, pkey->len);
                        ret = -1;
                        goto done;
                        break;
                  }
            }
      } else if (cmd_act == CMD_ACT_REMOVE) {
            /* ACT_REMOVE clears _all_ WEP keys */
            wep->action = cpu_to_le16(CMD_ACT_REMOVE);

            /* default tx key index */
            wep->keyindex = cpu_to_le16((u16)(adapter->wep_tx_keyidx &
                                      (u32)CMD_WEP_KEY_INDEX_MASK));
            lbs_deb_cmd("SET_WEP: remove key %d\n", adapter->wep_tx_keyidx);
      }

      ret = 0;

done:
      lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
      return ret;
}

static int wlan_cmd_802_11_enable_rsn(wlan_private * priv,
                              struct cmd_ds_command *cmd,
                              u16 cmd_action,
                              void * pdata_buf)
{
      struct cmd_ds_802_11_enable_rsn *penableRSN = &cmd->params.enbrsn;
      u32 * enable = pdata_buf;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_ENABLE_RSN);
      cmd->size = cpu_to_le16(sizeof(*penableRSN) + S_DS_GEN);
      penableRSN->action = cpu_to_le16(cmd_action);

      if (cmd_action == CMD_ACT_SET) {
            if (*enable)
                  penableRSN->enable = cpu_to_le16(CMD_ENABLE_RSN);
            else
                  penableRSN->enable = cpu_to_le16(CMD_DISABLE_RSN);
            lbs_deb_cmd("ENABLE_RSN: %d\n", *enable);
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}


static void set_one_wpa_key(struct MrvlIEtype_keyParamSet * pkeyparamset,
                            struct enc_key * pkey)
{
      lbs_deb_enter(LBS_DEB_CMD);

      if (pkey->flags & KEY_INFO_WPA_ENABLED) {
            pkeyparamset->keyinfo |= cpu_to_le16(KEY_INFO_WPA_ENABLED);
      }
      if (pkey->flags & KEY_INFO_WPA_UNICAST) {
            pkeyparamset->keyinfo |= cpu_to_le16(KEY_INFO_WPA_UNICAST);
      }
      if (pkey->flags & KEY_INFO_WPA_MCAST) {
            pkeyparamset->keyinfo |= cpu_to_le16(KEY_INFO_WPA_MCAST);
      }

      pkeyparamset->type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
      pkeyparamset->keytypeid = cpu_to_le16(pkey->type);
      pkeyparamset->keylen = cpu_to_le16(pkey->len);
      memcpy(pkeyparamset->key, pkey->key, pkey->len);
      pkeyparamset->length = cpu_to_le16(  sizeof(pkeyparamset->keytypeid)
                                              + sizeof(pkeyparamset->keyinfo)
                                              + sizeof(pkeyparamset->keylen)
                                              + sizeof(pkeyparamset->key));
      lbs_deb_leave(LBS_DEB_CMD);
}

static int wlan_cmd_802_11_key_material(wlan_private * priv,
                              struct cmd_ds_command *cmd,
                              u16 cmd_action,
                              u32 cmd_oid, void *pdata_buf)
{
      struct cmd_ds_802_11_key_material *pkeymaterial =
          &cmd->params.keymaterial;
      struct assoc_request * assoc_req = pdata_buf;
      int ret = 0;
      int index = 0;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_KEY_MATERIAL);
      pkeymaterial->action = cpu_to_le16(cmd_action);

      if (cmd_action == CMD_ACT_GET) {
            cmd->size = cpu_to_le16(S_DS_GEN + sizeof (pkeymaterial->action));
            ret = 0;
            goto done;
      }

      memset(&pkeymaterial->keyParamSet, 0, sizeof(pkeymaterial->keyParamSet));

      if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) {
            set_one_wpa_key(&pkeymaterial->keyParamSet[index],
                            &assoc_req->wpa_unicast_key);
            index++;
      }

      if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) {
            set_one_wpa_key(&pkeymaterial->keyParamSet[index],
                            &assoc_req->wpa_mcast_key);
            index++;
      }

      cmd->size = cpu_to_le16(  S_DS_GEN
                              + sizeof (pkeymaterial->action)
                              + (index * sizeof(struct MrvlIEtype_keyParamSet)));

      ret = 0;

done:
      lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
      return ret;
}

static int wlan_cmd_802_11_reset(wlan_private * priv,
                         struct cmd_ds_command *cmd, int cmd_action)
{
      struct cmd_ds_802_11_reset *reset = &cmd->params.reset;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_RESET);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset) + S_DS_GEN);
      reset->action = cpu_to_le16(cmd_action);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_get_log(wlan_private * priv,
                           struct cmd_ds_command *cmd)
{
      lbs_deb_enter(LBS_DEB_CMD);
      cmd->command = cpu_to_le16(CMD_802_11_GET_LOG);
      cmd->size =
            cpu_to_le16(sizeof(struct cmd_ds_802_11_get_log) + S_DS_GEN);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_get_stat(wlan_private * priv,
                            struct cmd_ds_command *cmd)
{
      lbs_deb_enter(LBS_DEB_CMD);
      cmd->command = cpu_to_le16(CMD_802_11_GET_STAT);
      cmd->size =
          cpu_to_le16(sizeof(struct cmd_ds_802_11_get_stat) + S_DS_GEN);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_snmp_mib(wlan_private * priv,
                            struct cmd_ds_command *cmd,
                            int cmd_action,
                            int cmd_oid, void *pdata_buf)
{
      struct cmd_ds_802_11_snmp_mib *pSNMPMIB = &cmd->params.smib;
      wlan_adapter *adapter = priv->adapter;
      u8 ucTemp;

      lbs_deb_enter(LBS_DEB_CMD);

      lbs_deb_cmd("SNMP_CMD: cmd_oid = 0x%x\n", cmd_oid);

      cmd->command = cpu_to_le16(CMD_802_11_SNMP_MIB);
      cmd->size = cpu_to_le16(sizeof(*pSNMPMIB) + S_DS_GEN);

      switch (cmd_oid) {
      case OID_802_11_INFRASTRUCTURE_MODE:
      {
            u8 mode = (u8) (size_t) pdata_buf;
            pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_SET);
            pSNMPMIB->oid = cpu_to_le16((u16) DESIRED_BSSTYPE_I);
            pSNMPMIB->bufsize = sizeof(u8);
            if (mode == IW_MODE_ADHOC) {
                  ucTemp = SNMP_MIB_VALUE_ADHOC;
            } else {
                  /* Infra and Auto modes */
                  ucTemp = SNMP_MIB_VALUE_INFRA;
            }

            memmove(pSNMPMIB->value, &ucTemp, sizeof(u8));

            break;
      }

      case OID_802_11D_ENABLE:
            {
                  u32 ulTemp;

                  pSNMPMIB->oid = cpu_to_le16((u16) DOT11D_I);

                  if (cmd_action == CMD_ACT_SET) {
                        pSNMPMIB->querytype = CMD_ACT_SET;
                        pSNMPMIB->bufsize = sizeof(u16);
                        ulTemp = *(u32 *)pdata_buf;
                        *((__le16 *)(pSNMPMIB->value)) =
                            cpu_to_le16((u16) ulTemp);
                  }
                  break;
            }

      case OID_802_11_FRAGMENTATION_THRESHOLD:
            {
                  u32 ulTemp;

                  pSNMPMIB->oid = cpu_to_le16((u16) FRAGTHRESH_I);

                  if (cmd_action == CMD_ACT_GET) {
                        pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_GET);
                  } else if (cmd_action == CMD_ACT_SET) {
                        pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_SET);
                        pSNMPMIB->bufsize = cpu_to_le16(sizeof(u16));
                        ulTemp = *((u32 *) pdata_buf);
                        *((__le16 *)(pSNMPMIB->value)) =
                            cpu_to_le16((u16) ulTemp);

                  }

                  break;
            }

      case OID_802_11_RTS_THRESHOLD:
            {

                  u32 ulTemp;
                  pSNMPMIB->oid = le16_to_cpu((u16) RTSTHRESH_I);

                  if (cmd_action == CMD_ACT_GET) {
                        pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_GET);
                  } else if (cmd_action == CMD_ACT_SET) {
                        pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_SET);
                        pSNMPMIB->bufsize = cpu_to_le16(sizeof(u16));
                        ulTemp = *((u32 *)pdata_buf);
                        *(__le16 *)(pSNMPMIB->value) =
                            cpu_to_le16((u16) ulTemp);

                  }
                  break;
            }
      case OID_802_11_TX_RETRYCOUNT:
            pSNMPMIB->oid = cpu_to_le16((u16) SHORT_RETRYLIM_I);

            if (cmd_action == CMD_ACT_GET) {
                  pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_GET);
            } else if (cmd_action == CMD_ACT_SET) {
                  pSNMPMIB->querytype = cpu_to_le16(CMD_ACT_SET);
                  pSNMPMIB->bufsize = cpu_to_le16(sizeof(u16));
                  *((__le16 *)(pSNMPMIB->value)) =
                      cpu_to_le16((u16) adapter->txretrycount);
            }

            break;
      default:
            break;
      }

      lbs_deb_cmd(
             "SNMP_CMD: command=0x%x, size=0x%x, seqnum=0x%x, result=0x%x\n",
             le16_to_cpu(cmd->command), le16_to_cpu(cmd->size),
             le16_to_cpu(cmd->seqnum), le16_to_cpu(cmd->result));

      lbs_deb_cmd(
             "SNMP_CMD: action 0x%x, oid 0x%x, oidsize 0x%x, value 0x%x\n",
             le16_to_cpu(pSNMPMIB->querytype), le16_to_cpu(pSNMPMIB->oid),
             le16_to_cpu(pSNMPMIB->bufsize),
             le16_to_cpu(*(__le16 *) pSNMPMIB->value));

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_radio_control(wlan_private * priv,
                               struct cmd_ds_command *cmd,
                               int cmd_action)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_radio_control *pradiocontrol = &cmd->params.radio;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->size =
          cpu_to_le16((sizeof(struct cmd_ds_802_11_radio_control)) +
                       S_DS_GEN);
      cmd->command = cpu_to_le16(CMD_802_11_RADIO_CONTROL);

      pradiocontrol->action = cpu_to_le16(cmd_action);

      switch (adapter->preamble) {
      case CMD_TYPE_SHORT_PREAMBLE:
            pradiocontrol->control = cpu_to_le16(SET_SHORT_PREAMBLE);
            break;

      case CMD_TYPE_LONG_PREAMBLE:
            pradiocontrol->control = cpu_to_le16(SET_LONG_PREAMBLE);
            break;

      case CMD_TYPE_AUTO_PREAMBLE:
      default:
            pradiocontrol->control = cpu_to_le16(SET_AUTO_PREAMBLE);
            break;
      }

      if (adapter->radioon)
            pradiocontrol->control |= cpu_to_le16(TURN_ON_RF);
      else
            pradiocontrol->control &= cpu_to_le16(~TURN_ON_RF);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_rf_tx_power(wlan_private * priv,
                               struct cmd_ds_command *cmd,
                               u16 cmd_action, void *pdata_buf)
{

      struct cmd_ds_802_11_rf_tx_power *prtp = &cmd->params.txp;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->size =
          cpu_to_le16((sizeof(struct cmd_ds_802_11_rf_tx_power)) + S_DS_GEN);
      cmd->command = cpu_to_le16(CMD_802_11_RF_TX_POWER);
      prtp->action = cpu_to_le16(cmd_action);

      lbs_deb_cmd("RF_TX_POWER_CMD: size:%d cmd:0x%x Act:%d\n",
                le16_to_cpu(cmd->size), le16_to_cpu(cmd->command),
                le16_to_cpu(prtp->action));

      switch (cmd_action) {
      case CMD_ACT_TX_POWER_OPT_GET:
            prtp->action = cpu_to_le16(CMD_ACT_GET);
            prtp->currentlevel = 0;
            break;

      case CMD_ACT_TX_POWER_OPT_SET_HIGH:
            prtp->action = cpu_to_le16(CMD_ACT_SET);
            prtp->currentlevel = cpu_to_le16(CMD_ACT_TX_POWER_INDEX_HIGH);
            break;

      case CMD_ACT_TX_POWER_OPT_SET_MID:
            prtp->action = cpu_to_le16(CMD_ACT_SET);
            prtp->currentlevel = cpu_to_le16(CMD_ACT_TX_POWER_INDEX_MID);
            break;

      case CMD_ACT_TX_POWER_OPT_SET_LOW:
            prtp->action = cpu_to_le16(CMD_ACT_SET);
            prtp->currentlevel = cpu_to_le16(*((u16 *) pdata_buf));
            break;
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_monitor_mode(wlan_private * priv,
                              struct cmd_ds_command *cmd,
                              u16 cmd_action, void *pdata_buf)
{
      struct cmd_ds_802_11_monitor_mode *monitor = &cmd->params.monitor;

      cmd->command = cpu_to_le16(CMD_802_11_MONITOR_MODE);
      cmd->size =
          cpu_to_le16(sizeof(struct cmd_ds_802_11_monitor_mode) +
                       S_DS_GEN);

      monitor->action = cpu_to_le16(cmd_action);
      if (cmd_action == CMD_ACT_SET) {
            monitor->mode =
                cpu_to_le16((u16) (*(u32 *) pdata_buf));
      }

      return 0;
}

static int wlan_cmd_802_11_rate_adapt_rateset(wlan_private * priv,
                                    struct cmd_ds_command *cmd,
                                    u16 cmd_action)
{
      struct cmd_ds_802_11_rate_adapt_rateset
      *rateadapt = &cmd->params.rateset;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);
      cmd->size =
          cpu_to_le16(sizeof(struct cmd_ds_802_11_rate_adapt_rateset)
                       + S_DS_GEN);
      cmd->command = cpu_to_le16(CMD_802_11_RATE_ADAPT_RATESET);

      rateadapt->action = cpu_to_le16(cmd_action);
      rateadapt->enablehwauto = cpu_to_le16(adapter->enablehwauto);
      rateadapt->bitmap = cpu_to_le16(adapter->ratebitmap);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_data_rate(wlan_private * priv,
                             struct cmd_ds_command *cmd,
                             u16 cmd_action)
{
      struct cmd_ds_802_11_data_rate *pdatarate = &cmd->params.drate;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_data_rate) +
                       S_DS_GEN);
      cmd->command = cpu_to_le16(CMD_802_11_DATA_RATE);
      memset(pdatarate, 0, sizeof(struct cmd_ds_802_11_data_rate));
      pdatarate->action = cpu_to_le16(cmd_action);

      if (cmd_action == CMD_ACT_SET_TX_FIX_RATE) {
            pdatarate->rates[0] = libertas_data_rate_to_fw_index(adapter->cur_rate);
            lbs_deb_cmd("DATA_RATE: set fixed 0x%02X\n",
                   adapter->cur_rate);
      } else if (cmd_action == CMD_ACT_SET_TX_AUTO) {
            lbs_deb_cmd("DATA_RATE: setting auto\n");
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_mac_multicast_adr(wlan_private * priv,
                              struct cmd_ds_command *cmd,
                              u16 cmd_action)
{
      struct cmd_ds_mac_multicast_adr *pMCastAdr = &cmd->params.madr;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_mac_multicast_adr) +
                       S_DS_GEN);
      cmd->command = cpu_to_le16(CMD_MAC_MULTICAST_ADR);

      lbs_deb_cmd("MULTICAST_ADR: setting %d addresses\n", pMCastAdr->nr_of_adrs);
      pMCastAdr->action = cpu_to_le16(cmd_action);
      pMCastAdr->nr_of_adrs =
          cpu_to_le16((u16) adapter->nr_of_multicastmacaddr);
      memcpy(pMCastAdr->maclist, adapter->multicastlist,
             adapter->nr_of_multicastmacaddr * ETH_ALEN);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_rf_channel(wlan_private * priv,
                              struct cmd_ds_command *cmd,
                              int option, void *pdata_buf)
{
      struct cmd_ds_802_11_rf_channel *rfchan = &cmd->params.rfchannel;

      lbs_deb_enter(LBS_DEB_CMD);
      cmd->command = cpu_to_le16(CMD_802_11_RF_CHANNEL);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_rf_channel) +
                        S_DS_GEN);

      if (option == CMD_OPT_802_11_RF_CHANNEL_SET) {
            rfchan->currentchannel = cpu_to_le16(*((u16 *) pdata_buf));
      }

      rfchan->action = cpu_to_le16(option);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_rssi(wlan_private * priv,
                        struct cmd_ds_command *cmd)
{
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);
      cmd->command = cpu_to_le16(CMD_802_11_RSSI);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_rssi) + S_DS_GEN);
      cmd->params.rssi.N = cpu_to_le16(DEFAULT_BCN_AVG_FACTOR);

      /* reset Beacon SNR/NF/RSSI values */
      adapter->SNR[TYPE_BEACON][TYPE_NOAVG] = 0;
      adapter->SNR[TYPE_BEACON][TYPE_AVG] = 0;
      adapter->NF[TYPE_BEACON][TYPE_NOAVG] = 0;
      adapter->NF[TYPE_BEACON][TYPE_AVG] = 0;
      adapter->RSSI[TYPE_BEACON][TYPE_NOAVG] = 0;
      adapter->RSSI[TYPE_BEACON][TYPE_AVG] = 0;

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_reg_access(wlan_private * priv,
                         struct cmd_ds_command *cmdptr,
                         u8 cmd_action, void *pdata_buf)
{
      struct wlan_offset_value *offval;

      lbs_deb_enter(LBS_DEB_CMD);

      offval = (struct wlan_offset_value *)pdata_buf;

      switch (cmdptr->command) {
      case CMD_MAC_REG_ACCESS:
            {
                  struct cmd_ds_mac_reg_access *macreg;

                  cmdptr->size =
                      cpu_to_le16(sizeof (struct cmd_ds_mac_reg_access)
                              + S_DS_GEN);
                  macreg =
                      (struct cmd_ds_mac_reg_access *)&cmdptr->params.
                      macreg;

                  macreg->action = cpu_to_le16(cmd_action);
                  macreg->offset = cpu_to_le16((u16) offval->offset);
                  macreg->value = cpu_to_le32(offval->value);

                  break;
            }

      case CMD_BBP_REG_ACCESS:
            {
                  struct cmd_ds_bbp_reg_access *bbpreg;

                  cmdptr->size =
                      cpu_to_le16(sizeof
                                   (struct cmd_ds_bbp_reg_access)
                                   + S_DS_GEN);
                  bbpreg =
                      (struct cmd_ds_bbp_reg_access *)&cmdptr->params.
                      bbpreg;

                  bbpreg->action = cpu_to_le16(cmd_action);
                  bbpreg->offset = cpu_to_le16((u16) offval->offset);
                  bbpreg->value = (u8) offval->value;

                  break;
            }

      case CMD_RF_REG_ACCESS:
            {
                  struct cmd_ds_rf_reg_access *rfreg;

                  cmdptr->size =
                      cpu_to_le16(sizeof
                                   (struct cmd_ds_rf_reg_access) +
                                   S_DS_GEN);
                  rfreg =
                      (struct cmd_ds_rf_reg_access *)&cmdptr->params.
                      rfreg;

                  rfreg->action = cpu_to_le16(cmd_action);
                  rfreg->offset = cpu_to_le16((u16) offval->offset);
                  rfreg->value = (u8) offval->value;

                  break;
            }

      default:
            break;
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_mac_address(wlan_private * priv,
                               struct cmd_ds_command *cmd,
                               u16 cmd_action)
{
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);
      cmd->command = cpu_to_le16(CMD_802_11_MAC_ADDRESS);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_mac_address) +
                       S_DS_GEN);
      cmd->result = 0;

      cmd->params.macadd.action = cpu_to_le16(cmd_action);

      if (cmd_action == CMD_ACT_SET) {
            memcpy(cmd->params.macadd.macadd,
                   adapter->current_addr, ETH_ALEN);
            lbs_deb_hex(LBS_DEB_CMD, "SET_CMD: MAC addr", adapter->current_addr, 6);
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_802_11_eeprom_access(wlan_private * priv,
                               struct cmd_ds_command *cmd,
                               int cmd_action, void *pdata_buf)
{
      struct wlan_ioctl_regrdwr *ea = pdata_buf;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_802_11_EEPROM_ACCESS);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_eeprom_access) +
                        S_DS_GEN);
      cmd->result = 0;

      cmd->params.rdeeprom.action = cpu_to_le16(ea->action);
      cmd->params.rdeeprom.offset = cpu_to_le16(ea->offset);
      cmd->params.rdeeprom.bytecount = cpu_to_le16(ea->NOB);
      cmd->params.rdeeprom.value = 0;

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_bt_access(wlan_private * priv,
                         struct cmd_ds_command *cmd,
                         u16 cmd_action, void *pdata_buf)
{
      struct cmd_ds_bt_access *bt_access = &cmd->params.bt;
      lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);

      cmd->command = cpu_to_le16(CMD_BT_ACCESS);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_bt_access) + S_DS_GEN);
      cmd->result = 0;
      bt_access->action = cpu_to_le16(cmd_action);

      switch (cmd_action) {
      case CMD_ACT_BT_ACCESS_ADD:
            memcpy(bt_access->addr1, pdata_buf, 2 * ETH_ALEN);
            lbs_deb_hex(LBS_DEB_MESH, "BT_ADD: blinded MAC addr", bt_access->addr1, 6);
            break;
      case CMD_ACT_BT_ACCESS_DEL:
            memcpy(bt_access->addr1, pdata_buf, 1 * ETH_ALEN);
            lbs_deb_hex(LBS_DEB_MESH, "BT_DEL: blinded MAC addr", bt_access->addr1, 6);
            break;
      case CMD_ACT_BT_ACCESS_LIST:
            bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
            break;
      case CMD_ACT_BT_ACCESS_RESET:
            break;
      case CMD_ACT_BT_ACCESS_SET_INVERT:
            bt_access->id = cpu_to_le32(*(u32 *) pdata_buf);
            break;
      case CMD_ACT_BT_ACCESS_GET_INVERT:
            break;
      default:
            break;
      }
      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_fwt_access(wlan_private * priv,
                         struct cmd_ds_command *cmd,
                         u16 cmd_action, void *pdata_buf)
{
      struct cmd_ds_fwt_access *fwt_access = &cmd->params.fwt;
      lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);

      cmd->command = cpu_to_le16(CMD_FWT_ACCESS);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_fwt_access) + S_DS_GEN);
      cmd->result = 0;

      if (pdata_buf)
            memcpy(fwt_access, pdata_buf, sizeof(*fwt_access));
      else
            memset(fwt_access, 0, sizeof(*fwt_access));

      fwt_access->action = cpu_to_le16(cmd_action);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_mesh_access(wlan_private * priv,
                        struct cmd_ds_command *cmd,
                        u16 cmd_action, void *pdata_buf)
{
      struct cmd_ds_mesh_access *mesh_access = &cmd->params.mesh;
      lbs_deb_enter_args(LBS_DEB_CMD, "action %d", cmd_action);

      cmd->command = cpu_to_le16(CMD_MESH_ACCESS);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_mesh_access) + S_DS_GEN);
      cmd->result = 0;

      if (pdata_buf)
            memcpy(mesh_access, pdata_buf, sizeof(*mesh_access));
      else
            memset(mesh_access, 0, sizeof(*mesh_access));

      mesh_access->action = cpu_to_le16(cmd_action);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_cmd_set_boot2_ver(wlan_private * priv,
                        struct cmd_ds_command *cmd,
                        u16 cmd_action, void *pdata_buf)
{
      struct cmd_ds_set_boot2_ver *boot2_ver = &cmd->params.boot2_ver;
      cmd->command = cpu_to_le16(CMD_SET_BOOT2_VER);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_set_boot2_ver) + S_DS_GEN);
      boot2_ver->version = priv->boot2_version;
      return 0;
}

/*
 * Note: NEVER use libertas_queue_cmd() with addtail==0 other than for
 * the command timer, because it does not account for queued commands.
 */
void libertas_queue_cmd(wlan_adapter * adapter, struct cmd_ctrl_node *cmdnode, u8 addtail)
{
      unsigned long flags;
      struct cmd_ds_command *cmdptr;

      lbs_deb_enter(LBS_DEB_HOST);

      if (!cmdnode) {
            lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
            goto done;
      }

      cmdptr = (struct cmd_ds_command *)cmdnode->bufvirtualaddr;
      if (!cmdptr) {
            lbs_deb_host("QUEUE_CMD: cmdptr is NULL\n");
            goto done;
      }

      /* Exit_PS command needs to be queued in the header always. */
      if (cmdptr->command == CMD_802_11_PS_MODE) {
            struct cmd_ds_802_11_ps_mode *psm = &cmdptr->params.psmode;
            if (psm->action == cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
                  if (adapter->psstate != PS_STATE_FULL_POWER)
                        addtail = 0;
            }
      }

      spin_lock_irqsave(&adapter->driver_lock, flags);

      if (addtail) {
            list_add_tail((struct list_head *)cmdnode,
                        &adapter->cmdpendingq);
            adapter->nr_cmd_pending++;
      } else
            list_add((struct list_head *)cmdnode, &adapter->cmdpendingq);

      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
             le16_to_cpu(((struct cmd_ds_gen*)cmdnode->bufvirtualaddr)->command));

done:
      lbs_deb_leave(LBS_DEB_HOST);
}

/*
 * TODO: Fix the issue when DownloadcommandToStation is being called the
 * second time when the command times out. All the cmdptr->xxx are in little
 * endian and therefore all the comparissions will fail.
 * For now - we are not performing the endian conversion the second time - but
 * for PS and DEEP_SLEEP we need to worry
 */
static int DownloadcommandToStation(wlan_private * priv,
                            struct cmd_ctrl_node *cmdnode)
{
      unsigned long flags;
      struct cmd_ds_command *cmdptr;
      wlan_adapter *adapter = priv->adapter;
      int ret = -1;
      u16 cmdsize;
      u16 command;

      lbs_deb_enter(LBS_DEB_HOST);

      if (!adapter || !cmdnode) {
            lbs_deb_host("DNLD_CMD: adapter or cmdmode is NULL\n");
            goto done;
      }

      cmdptr = (struct cmd_ds_command *)cmdnode->bufvirtualaddr;

      spin_lock_irqsave(&adapter->driver_lock, flags);
      if (!cmdptr || !cmdptr->size) {
            lbs_deb_host("DNLD_CMD: cmdptr is NULL or zero\n");
            __libertas_cleanup_and_insert_cmd(priv, cmdnode);
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            goto done;
      }

      adapter->cur_cmd = cmdnode;
      adapter->cur_cmd_retcode = 0;
      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      cmdsize = cmdptr->size;
      command = cpu_to_le16(cmdptr->command);

      lbs_deb_host("DNLD_CMD: command 0x%04x, size %d, jiffies %lu\n",
                command, le16_to_cpu(cmdptr->size), jiffies);
      lbs_deb_hex(LBS_DEB_HOST, "DNLD_CMD", cmdnode->bufvirtualaddr, cmdsize);

      cmdnode->cmdwaitqwoken = 0;
      cmdsize = cpu_to_le16(cmdsize);

      ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmdptr, cmdsize);

      if (ret != 0) {
            lbs_deb_host("DNLD_CMD: hw_host_to_card failed\n");
            spin_lock_irqsave(&adapter->driver_lock, flags);
            adapter->cur_cmd_retcode = ret;
            __libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
            adapter->nr_cmd_pending--;
            adapter->cur_cmd = NULL;
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            goto done;
      }

      lbs_deb_cmd("DNLD_CMD: sent command 0x%04x, jiffies %lu\n", command, jiffies);

      /* Setup the timer after transmit command */
      if (command == CMD_802_11_SCAN || command == CMD_802_11_AUTHENTICATE
          || command == CMD_802_11_ASSOCIATE)
            mod_timer(&adapter->command_timer, jiffies + (10*HZ));
      else
            mod_timer(&adapter->command_timer, jiffies + (5*HZ));

      ret = 0;

done:
      lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
      return ret;
}

static int wlan_cmd_mac_control(wlan_private * priv,
                        struct cmd_ds_command *cmd)
{
      struct cmd_ds_mac_control *mac = &cmd->params.macctrl;

      lbs_deb_enter(LBS_DEB_CMD);

      cmd->command = cpu_to_le16(CMD_MAC_CONTROL);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_mac_control) + S_DS_GEN);
      mac->action = cpu_to_le16(priv->adapter->currentpacketfilter);

      lbs_deb_cmd("MAC_CONTROL: action 0x%x, size %d\n",
                le16_to_cpu(mac->action), le16_to_cpu(cmd->size));

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

/**
 *  This function inserts command node to cmdfreeq
 *  after cleans it. Requires adapter->driver_lock held.
 */
void __libertas_cleanup_and_insert_cmd(wlan_private * priv, struct cmd_ctrl_node *ptempcmd)
{
      wlan_adapter *adapter = priv->adapter;

      if (!ptempcmd)
            return;

      cleanup_cmdnode(ptempcmd);
      list_add_tail((struct list_head *)ptempcmd, &adapter->cmdfreeq);
}

static void libertas_cleanup_and_insert_cmd(wlan_private * priv, struct cmd_ctrl_node *ptempcmd)
{
      unsigned long flags;

      spin_lock_irqsave(&priv->adapter->driver_lock, flags);
      __libertas_cleanup_and_insert_cmd(priv, ptempcmd);
      spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
}

int libertas_set_radio_control(wlan_private * priv)
{
      int ret = 0;

      lbs_deb_enter(LBS_DEB_CMD);

      ret = libertas_prepare_and_send_command(priv,
                            CMD_802_11_RADIO_CONTROL,
                            CMD_ACT_SET,
                            CMD_OPTION_WAITFORRSP, 0, NULL);

      lbs_deb_cmd("RADIO_SET: radio %d, preamble %d\n",
             priv->adapter->radioon, priv->adapter->preamble);

      lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
      return ret;
}

int libertas_set_mac_packet_filter(wlan_private * priv)
{
      int ret = 0;

      lbs_deb_enter(LBS_DEB_CMD);

      /* Send MAC control command to station */
      ret = libertas_prepare_and_send_command(priv,
                            CMD_MAC_CONTROL, 0, 0, 0, NULL);

      lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
      return ret;
}

/**
 *  @brief This function prepare the command before send to firmware.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @param cmd_no command number
 *  @param cmd_action   command action: GET or SET
 *  @param wait_option  wait option: wait response or not
 *  @param cmd_oid      cmd oid: treated as sub command
 *  @param pdata_buf    A pointer to informaion buffer
 *  @return             0 or -1
 */
int libertas_prepare_and_send_command(wlan_private * priv,
                    u16 cmd_no,
                    u16 cmd_action,
                    u16 wait_option, u32 cmd_oid, void *pdata_buf)
{
      int ret = 0;
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ctrl_node *cmdnode;
      struct cmd_ds_command *cmdptr;
      unsigned long flags;

      lbs_deb_enter(LBS_DEB_HOST);

      if (!adapter) {
            lbs_deb_host("PREP_CMD: adapter is NULL\n");
            ret = -1;
            goto done;
      }

      if (adapter->surpriseremoved) {
            lbs_deb_host("PREP_CMD: card removed\n");
            ret = -1;
            goto done;
      }

      cmdnode = libertas_get_free_cmd_ctrl_node(priv);

      if (cmdnode == NULL) {
            lbs_deb_host("PREP_CMD: cmdnode is NULL\n");

            /* Wake up main thread to execute next command */
            wake_up_interruptible(&priv->waitq);
            ret = -1;
            goto done;
      }

      libertas_set_cmd_ctrl_node(priv, cmdnode, cmd_oid, wait_option, pdata_buf);

      cmdptr = (struct cmd_ds_command *)cmdnode->bufvirtualaddr;

      lbs_deb_host("PREP_CMD: command 0x%04x\n", cmd_no);

      if (!cmdptr) {
            lbs_deb_host("PREP_CMD: cmdptr is NULL\n");
            libertas_cleanup_and_insert_cmd(priv, cmdnode);
            ret = -1;
            goto done;
      }

      /* Set sequence number, command and INT option */
      adapter->seqnum++;
      cmdptr->seqnum = cpu_to_le16(adapter->seqnum);

      cmdptr->command = cpu_to_le16(cmd_no);
      cmdptr->result = 0;

      switch (cmd_no) {
      case CMD_GET_HW_SPEC:
            ret = wlan_cmd_hw_spec(priv, cmdptr);
            break;
      case CMD_802_11_PS_MODE:
            ret = wlan_cmd_802_11_ps_mode(priv, cmdptr, cmd_action);
            break;

      case CMD_802_11_SCAN:
            ret = libertas_cmd_80211_scan(priv, cmdptr, pdata_buf);
            break;

      case CMD_MAC_CONTROL:
            ret = wlan_cmd_mac_control(priv, cmdptr);
            break;

      case CMD_802_11_ASSOCIATE:
      case CMD_802_11_REASSOCIATE:
            ret = libertas_cmd_80211_associate(priv, cmdptr, pdata_buf);
            break;

      case CMD_802_11_DEAUTHENTICATE:
            ret = libertas_cmd_80211_deauthenticate(priv, cmdptr);
            break;

      case CMD_802_11_SET_WEP:
            ret = wlan_cmd_802_11_set_wep(priv, cmdptr, cmd_action, pdata_buf);
            break;

      case CMD_802_11_AD_HOC_START:
            ret = libertas_cmd_80211_ad_hoc_start(priv, cmdptr, pdata_buf);
            break;
      case CMD_CODE_DNLD:
            break;

      case CMD_802_11_RESET:
            ret = wlan_cmd_802_11_reset(priv, cmdptr, cmd_action);
            break;

      case CMD_802_11_GET_LOG:
            ret = wlan_cmd_802_11_get_log(priv, cmdptr);
            break;

      case CMD_802_11_AUTHENTICATE:
            ret = libertas_cmd_80211_authenticate(priv, cmdptr, pdata_buf);
            break;

      case CMD_802_11_GET_STAT:
            ret = wlan_cmd_802_11_get_stat(priv, cmdptr);
            break;

      case CMD_802_11_SNMP_MIB:
            ret = wlan_cmd_802_11_snmp_mib(priv, cmdptr,
                                     cmd_action, cmd_oid, pdata_buf);
            break;

      case CMD_MAC_REG_ACCESS:
      case CMD_BBP_REG_ACCESS:
      case CMD_RF_REG_ACCESS:
            ret = wlan_cmd_reg_access(priv, cmdptr, cmd_action, pdata_buf);
            break;

      case CMD_802_11_RF_CHANNEL:
            ret = wlan_cmd_802_11_rf_channel(priv, cmdptr,
                                     cmd_action, pdata_buf);
            break;

      case CMD_802_11_RF_TX_POWER:
            ret = wlan_cmd_802_11_rf_tx_power(priv, cmdptr,
                                      cmd_action, pdata_buf);
            break;

      case CMD_802_11_RADIO_CONTROL:
            ret = wlan_cmd_802_11_radio_control(priv, cmdptr, cmd_action);
            break;

      case CMD_802_11_DATA_RATE:
            ret = wlan_cmd_802_11_data_rate(priv, cmdptr, cmd_action);
            break;
      case CMD_802_11_RATE_ADAPT_RATESET:
            ret = wlan_cmd_802_11_rate_adapt_rateset(priv,
                                           cmdptr, cmd_action);
            break;

      case CMD_MAC_MULTICAST_ADR:
            ret = wlan_cmd_mac_multicast_adr(priv, cmdptr, cmd_action);
            break;

      case CMD_802_11_MONITOR_MODE:
            ret = wlan_cmd_802_11_monitor_mode(priv, cmdptr,
                                  cmd_action, pdata_buf);
            break;

      case CMD_802_11_AD_HOC_JOIN:
            ret = libertas_cmd_80211_ad_hoc_join(priv, cmdptr, pdata_buf);
            break;

      case CMD_802_11_RSSI:
            ret = wlan_cmd_802_11_rssi(priv, cmdptr);
            break;

      case CMD_802_11_AD_HOC_STOP:
            ret = libertas_cmd_80211_ad_hoc_stop(priv, cmdptr);
            break;

      case CMD_802_11_ENABLE_RSN:
            ret = wlan_cmd_802_11_enable_rsn(priv, cmdptr, cmd_action,
                        pdata_buf);
            break;

      case CMD_802_11_KEY_MATERIAL:
            ret = wlan_cmd_802_11_key_material(priv, cmdptr, cmd_action,
                        cmd_oid, pdata_buf);
            break;

      case CMD_802_11_PAIRWISE_TSC:
            break;
      case CMD_802_11_GROUP_TSC:
            break;

      case CMD_802_11_MAC_ADDRESS:
            ret = wlan_cmd_802_11_mac_address(priv, cmdptr, cmd_action);
            break;

      case CMD_802_11_EEPROM_ACCESS:
            ret = wlan_cmd_802_11_eeprom_access(priv, cmdptr,
                                        cmd_action, pdata_buf);
            break;

      case CMD_802_11_SET_AFC:
      case CMD_802_11_GET_AFC:

            cmdptr->command = cpu_to_le16(cmd_no);
            cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_afc) +
                                 S_DS_GEN);

            memmove(&cmdptr->params.afc,
                  pdata_buf, sizeof(struct cmd_ds_802_11_afc));

            ret = 0;
            goto done;

      case CMD_802_11D_DOMAIN_INFO:
            ret = libertas_cmd_802_11d_domain_info(priv, cmdptr,
                                       cmd_no, cmd_action);
            break;

      case CMD_802_11_SLEEP_PARAMS:
            ret = wlan_cmd_802_11_sleep_params(priv, cmdptr, cmd_action);
            break;
      case CMD_802_11_INACTIVITY_TIMEOUT:
            ret = wlan_cmd_802_11_inactivity_timeout(priv, cmdptr,
                                           cmd_action, pdata_buf);
            libertas_set_cmd_ctrl_node(priv, cmdnode, 0, 0, pdata_buf);
            break;

      case CMD_802_11_TPC_CFG:
            cmdptr->command = cpu_to_le16(CMD_802_11_TPC_CFG);
            cmdptr->size =
                cpu_to_le16(sizeof(struct cmd_ds_802_11_tpc_cfg) +
                             S_DS_GEN);

            memmove(&cmdptr->params.tpccfg,
                  pdata_buf, sizeof(struct cmd_ds_802_11_tpc_cfg));

            ret = 0;
            break;
      case CMD_802_11_LED_GPIO_CTRL:
            {
                  struct mrvlietypes_ledgpio *gpio =
                      (struct mrvlietypes_ledgpio*)
                      cmdptr->params.ledgpio.data;

                  memmove(&cmdptr->params.ledgpio,
                        pdata_buf,
                        sizeof(struct cmd_ds_802_11_led_ctrl));

                  cmdptr->command =
                      cpu_to_le16(CMD_802_11_LED_GPIO_CTRL);

#define ACTION_NUMLED_TLVTYPE_LEN_FIELDS_LEN 8
                  cmdptr->size =
                      cpu_to_le16(gpio->header.len + S_DS_GEN +
                                   ACTION_NUMLED_TLVTYPE_LEN_FIELDS_LEN);
                  gpio->header.len = cpu_to_le16(gpio->header.len);

                  ret = 0;
                  break;
            }
      case CMD_802_11_PWR_CFG:
            cmdptr->command = cpu_to_le16(CMD_802_11_PWR_CFG);
            cmdptr->size =
                cpu_to_le16(sizeof(struct cmd_ds_802_11_pwr_cfg) +
                             S_DS_GEN);
            memmove(&cmdptr->params.pwrcfg, pdata_buf,
                  sizeof(struct cmd_ds_802_11_pwr_cfg));

            ret = 0;
            break;
      case CMD_BT_ACCESS:
            ret = wlan_cmd_bt_access(priv, cmdptr, cmd_action, pdata_buf);
            break;

      case CMD_FWT_ACCESS:
            ret = wlan_cmd_fwt_access(priv, cmdptr, cmd_action, pdata_buf);
            break;

      case CMD_MESH_ACCESS:
            ret = wlan_cmd_mesh_access(priv, cmdptr, cmd_action, pdata_buf);
            break;

      case CMD_SET_BOOT2_VER:
            ret = wlan_cmd_set_boot2_ver(priv, cmdptr, cmd_action, pdata_buf);
            break;

      case CMD_GET_TSF:
            cmdptr->command = cpu_to_le16(CMD_GET_TSF);
            cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_get_tsf) +
                                 S_DS_GEN);
            ret = 0;
            break;
      default:
            lbs_deb_host("PREP_CMD: unknown command 0x%04x\n", cmd_no);
            ret = -1;
            break;
      }

      /* return error, since the command preparation failed */
      if (ret != 0) {
            lbs_deb_host("PREP_CMD: command preparation failed\n");
            libertas_cleanup_and_insert_cmd(priv, cmdnode);
            ret = -1;
            goto done;
      }

      cmdnode->cmdwaitqwoken = 0;

      libertas_queue_cmd(adapter, cmdnode, 1);
      wake_up_interruptible(&priv->waitq);

      if (wait_option & CMD_OPTION_WAITFORRSP) {
            lbs_deb_host("PREP_CMD: wait for response\n");
            might_sleep();
            wait_event_interruptible(cmdnode->cmdwait_q,
                               cmdnode->cmdwaitqwoken);
      }

      spin_lock_irqsave(&adapter->driver_lock, flags);
      if (adapter->cur_cmd_retcode) {
            lbs_deb_host("PREP_CMD: command failed with return code %d\n",
                   adapter->cur_cmd_retcode);
            adapter->cur_cmd_retcode = 0;
            ret = -1;
      }
      spin_unlock_irqrestore(&adapter->driver_lock, flags);

done:
      lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
      return ret;
}
EXPORT_SYMBOL_GPL(libertas_prepare_and_send_command);

/**
 *  @brief This function allocates the command buffer and link
 *  it to command free queue.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @return             0 or -1
 */
int libertas_allocate_cmd_buffer(wlan_private * priv)
{
      int ret = 0;
      u32 ulbufsize;
      u32 i;
      struct cmd_ctrl_node *tempcmd_array;
      u8 *ptempvirtualaddr;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_HOST);

      /* Allocate and initialize cmdCtrlNode */
      ulbufsize = sizeof(struct cmd_ctrl_node) * MRVDRV_NUM_OF_CMD_BUFFER;

      if (!(tempcmd_array = kzalloc(ulbufsize, GFP_KERNEL))) {
            lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
            ret = -1;
            goto done;
      }
      adapter->cmd_array = tempcmd_array;

      /* Allocate and initialize command buffers */
      ulbufsize = MRVDRV_SIZE_OF_CMD_BUFFER;
      for (i = 0; i < MRVDRV_NUM_OF_CMD_BUFFER; i++) {
            if (!(ptempvirtualaddr = kzalloc(ulbufsize, GFP_KERNEL))) {
                  lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
                  ret = -1;
                  goto done;
            }

            /* Update command buffer virtual */
            tempcmd_array[i].bufvirtualaddr = ptempvirtualaddr;
      }

      for (i = 0; i < MRVDRV_NUM_OF_CMD_BUFFER; i++) {
            init_waitqueue_head(&tempcmd_array[i].cmdwait_q);
            libertas_cleanup_and_insert_cmd(priv, &tempcmd_array[i]);
      }

      ret = 0;

done:
      lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
      return ret;
}

/**
 *  @brief This function frees the command buffer.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @return             0 or -1
 */
int libertas_free_cmd_buffer(wlan_private * priv)
{
      u32 ulbufsize; /* Someone needs to die for this. Slowly and painfully */
      unsigned int i;
      struct cmd_ctrl_node *tempcmd_array;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_HOST);

      /* need to check if cmd array is allocated or not */
      if (adapter->cmd_array == NULL) {
            lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
            goto done;
      }

      tempcmd_array = adapter->cmd_array;

      /* Release shared memory buffers */
      ulbufsize = MRVDRV_SIZE_OF_CMD_BUFFER;
      for (i = 0; i < MRVDRV_NUM_OF_CMD_BUFFER; i++) {
            if (tempcmd_array[i].bufvirtualaddr) {
                  kfree(tempcmd_array[i].bufvirtualaddr);
                  tempcmd_array[i].bufvirtualaddr = NULL;
            }
      }

      /* Release cmd_ctrl_node */
      if (adapter->cmd_array) {
            kfree(adapter->cmd_array);
            adapter->cmd_array = NULL;
      }

done:
      lbs_deb_leave(LBS_DEB_HOST);
      return 0;
}

/**
 *  @brief This function gets a free command node if available in
 *  command free queue.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
 */
struct cmd_ctrl_node *libertas_get_free_cmd_ctrl_node(wlan_private * priv)
{
      struct cmd_ctrl_node *tempnode;
      wlan_adapter *adapter = priv->adapter;
      unsigned long flags;

      lbs_deb_enter(LBS_DEB_HOST);

      if (!adapter)
            return NULL;

      spin_lock_irqsave(&adapter->driver_lock, flags);

      if (!list_empty(&adapter->cmdfreeq)) {
            tempnode = (struct cmd_ctrl_node *)adapter->cmdfreeq.next;
            list_del((struct list_head *)tempnode);
      } else {
            lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
            tempnode = NULL;
      }

      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      if (tempnode)
            cleanup_cmdnode(tempnode);

      lbs_deb_leave(LBS_DEB_HOST);
      return tempnode;
}

/**
 *  @brief This function cleans command node.
 *
 *  @param ptempnode    A pointer to cmdCtrlNode structure
 *  @return             n/a
 */
static void cleanup_cmdnode(struct cmd_ctrl_node *ptempnode)
{
      lbs_deb_enter(LBS_DEB_HOST);

      if (!ptempnode)
            return;
      ptempnode->cmdwaitqwoken = 1;
      wake_up_interruptible(&ptempnode->cmdwait_q);
      ptempnode->status = 0;
      ptempnode->cmd_oid = (u32) 0;
      ptempnode->wait_option = 0;
      ptempnode->pdata_buf = NULL;

      if (ptempnode->bufvirtualaddr != NULL)
            memset(ptempnode->bufvirtualaddr, 0, MRVDRV_SIZE_OF_CMD_BUFFER);

      lbs_deb_leave(LBS_DEB_HOST);
}

/**
 *  @brief This function initializes the command node.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @param ptempnode    A pointer to cmd_ctrl_node structure
 *  @param cmd_oid      cmd oid: treated as sub command
 *  @param wait_option  wait option: wait response or not
 *  @param pdata_buf    A pointer to informaion buffer
 *  @return             0 or -1
 */
void libertas_set_cmd_ctrl_node(wlan_private * priv,
                struct cmd_ctrl_node *ptempnode,
                u32 cmd_oid, u16 wait_option, void *pdata_buf)
{
      lbs_deb_enter(LBS_DEB_HOST);

      if (!ptempnode)
            return;

      ptempnode->cmd_oid = cmd_oid;
      ptempnode->wait_option = wait_option;
      ptempnode->pdata_buf = pdata_buf;

      lbs_deb_leave(LBS_DEB_HOST);
}

/**
 *  @brief This function executes next command in command
 *  pending queue. It will put fimware back to PS mode
 *  if applicable.
 *
 *  @param priv     A pointer to wlan_private structure
 *  @return          0 or -1
 */
int libertas_execute_next_command(wlan_private * priv)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ctrl_node *cmdnode = NULL;
      struct cmd_ds_command *cmdptr;
      unsigned long flags;
      int ret = 0;

      // Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
      // only caller to us is libertas_thread() and we get even when a
      // data packet is received
      lbs_deb_enter(LBS_DEB_THREAD);

      spin_lock_irqsave(&adapter->driver_lock, flags);

      if (adapter->cur_cmd) {
            lbs_pr_alert( "EXEC_NEXT_CMD: already processing command!\n");
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            ret = -1;
            goto done;
      }

      if (!list_empty(&adapter->cmdpendingq)) {
            cmdnode = (struct cmd_ctrl_node *)
                adapter->cmdpendingq.next;
      }

      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      if (cmdnode) {
            cmdptr = (struct cmd_ds_command *)cmdnode->bufvirtualaddr;

            if (is_command_allowed_in_ps(cmdptr->command)) {
                  if ((adapter->psstate == PS_STATE_SLEEP) ||
                      (adapter->psstate == PS_STATE_PRE_SLEEP)) {
                        lbs_deb_host(
                               "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
                               le16_to_cpu(cmdptr->command),
                               adapter->psstate);
                        ret = -1;
                        goto done;
                  }
                  lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
                         "0x%04x in psstate %d\n",
                            le16_to_cpu(cmdptr->command),
                            adapter->psstate);
            } else if (adapter->psstate != PS_STATE_FULL_POWER) {
                  /*
                   * 1. Non-PS command:
                   * Queue it. set needtowakeup to TRUE if current state
                   * is SLEEP, otherwise call libertas_ps_wakeup to send Exit_PS.
                   * 2. PS command but not Exit_PS:
                   * Ignore it.
                   * 3. PS command Exit_PS:
                   * Set needtowakeup to TRUE if current state is SLEEP,
                   * otherwise send this command down to firmware
                   * immediately.
                   */
                  if (cmdptr->command !=
                      cpu_to_le16(CMD_802_11_PS_MODE)) {
                        /*  Prepare to send Exit PS,
                         *  this non PS command will be sent later */
                        if ((adapter->psstate == PS_STATE_SLEEP)
                            || (adapter->psstate == PS_STATE_PRE_SLEEP)
                            ) {
                              /* w/ new scheme, it will not reach here.
                                 since it is blocked in main_thread. */
                              adapter->needtowakeup = 1;
                        } else
                              libertas_ps_wakeup(priv, 0);

                        ret = 0;
                        goto done;
                  } else {
                        /*
                         * PS command. Ignore it if it is not Exit_PS.
                         * otherwise send it down immediately.
                         */
                        struct cmd_ds_802_11_ps_mode *psm =
                            &cmdptr->params.psmode;

                        lbs_deb_host(
                               "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
                               psm->action);
                        if (psm->action !=
                            cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
                              lbs_deb_host(
                                     "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
                              list_del((struct list_head *)cmdnode);
                              libertas_cleanup_and_insert_cmd(priv, cmdnode);

                              ret = 0;
                              goto done;
                        }

                        if ((adapter->psstate == PS_STATE_SLEEP) ||
                            (adapter->psstate == PS_STATE_PRE_SLEEP)) {
                              lbs_deb_host(
                                     "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
                              list_del((struct list_head *)cmdnode);
                              libertas_cleanup_and_insert_cmd(priv, cmdnode);
                              adapter->needtowakeup = 1;

                              ret = 0;
                              goto done;
                        }

                        lbs_deb_host(
                               "EXEC_NEXT_CMD: sending EXIT_PS\n");
                  }
            }
            list_del((struct list_head *)cmdnode);
            lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
                      le16_to_cpu(cmdptr->command));
            DownloadcommandToStation(priv, cmdnode);
      } else {
            /*
             * check if in power save mode, if yes, put the device back
             * to PS mode
             */
            if ((adapter->psmode != WLAN802_11POWERMODECAM) &&
                (adapter->psstate == PS_STATE_FULL_POWER) &&
                (adapter->connect_status == LIBERTAS_CONNECTED)) {
                  if (adapter->secinfo.WPAenabled ||
                      adapter->secinfo.WPA2enabled) {
                        /* check for valid WPA group keys */
                        if (adapter->wpa_mcast_key.len ||
                            adapter->wpa_unicast_key.len) {
                              lbs_deb_host(
                                     "EXEC_NEXT_CMD: WPA enabled and GTK_SET"
                                     " go back to PS_SLEEP");
                              libertas_ps_sleep(priv, 0);
                        }
                  } else {
                        lbs_deb_host(
                               "EXEC_NEXT_CMD: cmdpendingq empty, "
                               "go back to PS_SLEEP");
                        libertas_ps_sleep(priv, 0);
                  }
            }
      }

      ret = 0;
done:
      lbs_deb_leave(LBS_DEB_THREAD);
      return ret;
}

void libertas_send_iwevcustom_event(wlan_private * priv, s8 * str)
{
      union iwreq_data iwrq;
      u8 buf[50];

      lbs_deb_enter(LBS_DEB_WEXT);

      memset(&iwrq, 0, sizeof(union iwreq_data));
      memset(buf, 0, sizeof(buf));

      snprintf(buf, sizeof(buf) - 1, "%s", str);

      iwrq.data.length = strlen(buf) + 1 + IW_EV_LCP_LEN;

      /* Send Event to upper layer */
      lbs_deb_wext("event indication string %s\n", (char *)buf);
      lbs_deb_wext("event indication length %d\n", iwrq.data.length);
      lbs_deb_wext("sending wireless event IWEVCUSTOM for %s\n", str);

      wireless_send_event(priv->dev, IWEVCUSTOM, &iwrq, buf);

      lbs_deb_leave(LBS_DEB_WEXT);
}

static int sendconfirmsleep(wlan_private * priv, u8 * cmdptr, u16 size)
{
      unsigned long flags;
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;

      lbs_deb_enter(LBS_DEB_HOST);

      lbs_deb_host("SEND_SLEEPC_CMD: before download, cmd size %d\n",
             size);

      lbs_deb_hex(LBS_DEB_HOST, "sleep confirm command", cmdptr, size);

      ret = priv->hw_host_to_card(priv, MVMS_CMD, cmdptr, size);
      priv->dnld_sent = DNLD_RES_RECEIVED;

      spin_lock_irqsave(&adapter->driver_lock, flags);
      if (adapter->intcounter || adapter->currenttxskb)
            lbs_deb_host("SEND_SLEEPC_CMD: intcounter %d, currenttxskb %p\n",
                   adapter->intcounter, adapter->currenttxskb);
      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      if (ret) {
            lbs_pr_alert(
                   "SEND_SLEEPC_CMD: Host to Card failed for Confirm Sleep\n");
      } else {
            spin_lock_irqsave(&adapter->driver_lock, flags);
            if (!adapter->intcounter) {
                  adapter->psstate = PS_STATE_SLEEP;
            } else {
                  lbs_deb_host("SEND_SLEEPC_CMD: after sent, intcounter %d\n",
                         adapter->intcounter);
            }
            spin_unlock_irqrestore(&adapter->driver_lock, flags);

            lbs_deb_host("SEND_SLEEPC_CMD: sent confirm sleep\n");
      }

      lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
      return ret;
}

void libertas_ps_sleep(wlan_private * priv, int wait_option)
{
      lbs_deb_enter(LBS_DEB_HOST);

      /*
       * PS is currently supported only in Infrastructure mode
       * Remove this check if it is to be supported in IBSS mode also
       */

      libertas_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
                        CMD_SUBCMD_ENTER_PS, wait_option, 0, NULL);

      lbs_deb_leave(LBS_DEB_HOST);
}

/**
 *  @brief This function sends Exit_PS command to firmware.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @param wait_option  wait response or not
 *  @return             n/a
 */
void libertas_ps_wakeup(wlan_private * priv, int wait_option)
{
      __le32 Localpsmode;

      lbs_deb_enter(LBS_DEB_HOST);

      Localpsmode = cpu_to_le32(WLAN802_11POWERMODECAM);

      libertas_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
                        CMD_SUBCMD_EXIT_PS,
                        wait_option, 0, &Localpsmode);

      lbs_deb_leave(LBS_DEB_HOST);
}

/**
 *  @brief This function checks condition and prepares to
 *  send sleep confirm command to firmware if ok.
 *
 *  @param priv         A pointer to wlan_private structure
 *  @param psmode       Power Saving mode
 *  @return             n/a
 */
void libertas_ps_confirm_sleep(wlan_private * priv, u16 psmode)
{
      unsigned long flags =0;
      wlan_adapter *adapter = priv->adapter;
      u8 allowed = 1;

      lbs_deb_enter(LBS_DEB_HOST);

      if (priv->dnld_sent) {
            allowed = 0;
            lbs_deb_host("dnld_sent was set");
      }

      spin_lock_irqsave(&adapter->driver_lock, flags);
      if (adapter->cur_cmd) {
            allowed = 0;
            lbs_deb_host("cur_cmd was set");
      }
      if (adapter->intcounter > 0) {
            allowed = 0;
            lbs_deb_host("intcounter %d", adapter->intcounter);
      }
      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      if (allowed) {
            lbs_deb_host("sending libertas_ps_confirm_sleep\n");
            sendconfirmsleep(priv, (u8 *) & adapter->libertas_ps_confirm_sleep,
                         sizeof(struct PS_CMD_ConfirmSleep));
      } else {
            lbs_deb_host("sleep confirm has been delayed\n");
      }

      lbs_deb_leave(LBS_DEB_HOST);
}

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