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cmdresp.c

/**
  * This file contains the handling of command
  * responses as well as events generated by firmware.
  */
#include <linux/delay.h>
#include <linux/if_arp.h>
#include <linux/netdevice.h>

#include <net/iw_handler.h>

#include "host.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "join.h"
#include "wext.h"

/**
 *  @brief This function handles disconnect event. it
 *  reports disconnect to upper layer, clean tx/rx packets,
 *  reset link state etc.
 *
 *  @param priv    A pointer to wlan_private structure
 *  @return          n/a
 */
void libertas_mac_event_disconnected(wlan_private * priv)
{
      wlan_adapter *adapter = priv->adapter;
      union iwreq_data wrqu;

      if (adapter->connect_status != LIBERTAS_CONNECTED)
            return;

      lbs_deb_enter(LBS_DEB_CMD);

      memset(wrqu.ap_addr.sa_data, 0x00, ETH_ALEN);
      wrqu.ap_addr.sa_family = ARPHRD_ETHER;

      /*
       * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
       * It causes problem in the Supplicant
       */

      msleep_interruptible(1000);
      wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

      /* Free Tx and Rx packets */
      kfree_skb(priv->adapter->currenttxskb);
      priv->adapter->currenttxskb = NULL;

      /* report disconnect to upper layer */
      netif_stop_queue(priv->dev);
      netif_carrier_off(priv->dev);

      /* reset SNR/NF/RSSI values */
      memset(adapter->SNR, 0x00, sizeof(adapter->SNR));
      memset(adapter->NF, 0x00, sizeof(adapter->NF));
      memset(adapter->RSSI, 0x00, sizeof(adapter->RSSI));
      memset(adapter->rawSNR, 0x00, sizeof(adapter->rawSNR));
      memset(adapter->rawNF, 0x00, sizeof(adapter->rawNF));
      adapter->nextSNRNF = 0;
      adapter->numSNRNF = 0;
      lbs_deb_cmd("current SSID '%s', length %u\n",
                  escape_essid(adapter->curbssparams.ssid,
                               adapter->curbssparams.ssid_len),
                  adapter->curbssparams.ssid_len);

      adapter->connect_status = LIBERTAS_DISCONNECTED;

      /* Clear out associated SSID and BSSID since connection is
       * no longer valid.
       */
      memset(&adapter->curbssparams.bssid, 0, ETH_ALEN);
      memset(&adapter->curbssparams.ssid, 0, IW_ESSID_MAX_SIZE);
      adapter->curbssparams.ssid_len = 0;

      if (adapter->psstate != PS_STATE_FULL_POWER) {
            /* make firmware to exit PS mode */
            lbs_deb_cmd("disconnected, so exit PS mode\n");
            libertas_ps_wakeup(priv, 0);
      }
      lbs_deb_leave(LBS_DEB_CMD);
}

/**
 *  @brief This function handles MIC failure event.
 *
 *  @param priv    A pointer to wlan_private structure
 *  @para  event   the event id
 *  @return          n/a
 */
static void handle_mic_failureevent(wlan_private * priv, u32 event)
{
      char buf[50];

      lbs_deb_enter(LBS_DEB_CMD);
      memset(buf, 0, sizeof(buf));

      sprintf(buf, "%s", "MLME-MICHAELMICFAILURE.indication ");

      if (event == MACREG_INT_CODE_MIC_ERR_UNICAST) {
            strcat(buf, "unicast ");
      } else {
            strcat(buf, "multicast ");
      }

      libertas_send_iwevcustom_event(priv, buf);
      lbs_deb_leave(LBS_DEB_CMD);
}

static int wlan_ret_reg_access(wlan_private * priv,
                         u16 type, struct cmd_ds_command *resp)
{
      int ret = 0;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      switch (type) {
      case CMD_RET(CMD_MAC_REG_ACCESS):
            {
                  struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;

                  adapter->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
                  adapter->offsetvalue.value = le32_to_cpu(reg->value);
                  break;
            }

      case CMD_RET(CMD_BBP_REG_ACCESS):
            {
                  struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;

                  adapter->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
                  adapter->offsetvalue.value = reg->value;
                  break;
            }

      case CMD_RET(CMD_RF_REG_ACCESS):
            {
                  struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;

                  adapter->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
                  adapter->offsetvalue.value = reg->value;
                  break;
            }

      default:
            ret = -1;
      }

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

static int wlan_ret_get_hw_spec(wlan_private * priv,
                        struct cmd_ds_command *resp)
{
      u32 i;
      struct cmd_ds_get_hw_spec *hwspec = &resp->params.hwspec;
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;
      DECLARE_MAC_BUF(mac);

      lbs_deb_enter(LBS_DEB_CMD);

      adapter->fwcapinfo = le32_to_cpu(hwspec->fwcapinfo);

      memcpy(adapter->fwreleasenumber, hwspec->fwreleasenumber, 4);

      lbs_deb_cmd("GET_HW_SPEC: firmware release %u.%u.%up%u\n",
                adapter->fwreleasenumber[2], adapter->fwreleasenumber[1],
                adapter->fwreleasenumber[0], adapter->fwreleasenumber[3]);
      lbs_deb_cmd("GET_HW_SPEC: MAC addr %s\n",
                print_mac(mac, hwspec->permanentaddr));
      lbs_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
             hwspec->hwifversion, hwspec->version);

      /* Clamp region code to 8-bit since FW spec indicates that it should
       * only ever be 8-bit, even though the field size is 16-bit.  Some firmware
       * returns non-zero high 8 bits here.
       */
      adapter->regioncode = le16_to_cpu(hwspec->regioncode) & 0xFF;

      for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
            /* use the region code to search for the index */
            if (adapter->regioncode == libertas_region_code_to_index[i]) {
                  break;
            }
      }

      /* if it's unidentified region code, use the default (USA) */
      if (i >= MRVDRV_MAX_REGION_CODE) {
            adapter->regioncode = 0x10;
            lbs_pr_info("unidentified region code; using the default (USA)\n");
      }

      if (adapter->current_addr[0] == 0xff)
            memmove(adapter->current_addr, hwspec->permanentaddr, ETH_ALEN);

      memcpy(priv->dev->dev_addr, adapter->current_addr, ETH_ALEN);
      if (priv->mesh_dev)
            memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);

      if (libertas_set_regiontable(priv, adapter->regioncode, 0)) {
            ret = -1;
            goto done;
      }

      if (libertas_set_universaltable(priv, 0)) {
            ret = -1;
            goto done;
      }

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

static int wlan_ret_802_11_sleep_params(wlan_private * priv,
                              struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_sleep_params *sp = &resp->params.sleep_params;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      lbs_deb_cmd("error 0x%x, offset 0x%x, stabletime 0x%x, calcontrol 0x%x "
                "extsleepclk 0x%x\n", le16_to_cpu(sp->error),
                le16_to_cpu(sp->offset), le16_to_cpu(sp->stabletime),
                sp->calcontrol, sp->externalsleepclk);

      adapter->sp.sp_error = le16_to_cpu(sp->error);
      adapter->sp.sp_offset = le16_to_cpu(sp->offset);
      adapter->sp.sp_stabletime = le16_to_cpu(sp->stabletime);
      adapter->sp.sp_calcontrol = sp->calcontrol;
      adapter->sp.sp_extsleepclk = sp->externalsleepclk;
      adapter->sp.sp_reserved = le16_to_cpu(sp->reserved);

      lbs_deb_enter(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_stat(wlan_private * priv,
                        struct cmd_ds_command *resp)
{
      lbs_deb_enter(LBS_DEB_CMD);
/*    currently adapter->wlan802_11Stat is unused

      struct cmd_ds_802_11_get_stat *p11Stat = &resp->params.gstat;
      wlan_adapter *adapter = priv->adapter;

      // TODO Convert it to Big endian befor copy
      memcpy(&adapter->wlan802_11Stat,
             p11Stat, sizeof(struct cmd_ds_802_11_get_stat));
*/
      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_snmp_mib(wlan_private * priv,
                            struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_snmp_mib *smib = &resp->params.smib;
      u16 oid = le16_to_cpu(smib->oid);
      u16 querytype = le16_to_cpu(smib->querytype);

      lbs_deb_enter(LBS_DEB_CMD);

      lbs_deb_cmd("SNMP_RESP: oid 0x%x, querytype 0x%x\n", oid,
             querytype);
      lbs_deb_cmd("SNMP_RESP: Buf size %d\n", le16_to_cpu(smib->bufsize));

      if (querytype == CMD_ACT_GET) {
            switch (oid) {
            case FRAGTHRESH_I:
                  priv->adapter->fragthsd =
                        le16_to_cpu(*((__le16 *)(smib->value)));
                  lbs_deb_cmd("SNMP_RESP: frag threshold %u\n",
                            priv->adapter->fragthsd);
                  break;
            case RTSTHRESH_I:
                  priv->adapter->rtsthsd =
                        le16_to_cpu(*((__le16 *)(smib->value)));
                  lbs_deb_cmd("SNMP_RESP: rts threshold %u\n",
                            priv->adapter->rtsthsd);
                  break;
            case SHORT_RETRYLIM_I:
                  priv->adapter->txretrycount =
                        le16_to_cpu(*((__le16 *)(smib->value)));
                  lbs_deb_cmd("SNMP_RESP: tx retry count %u\n",
                            priv->adapter->rtsthsd);
                  break;
            default:
                  break;
            }
      }

      lbs_deb_enter(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_key_material(wlan_private * priv,
                              struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_key_material *pkeymaterial =
          &resp->params.keymaterial;
      wlan_adapter *adapter = priv->adapter;
      u16 action = le16_to_cpu(pkeymaterial->action);

      lbs_deb_enter(LBS_DEB_CMD);

      /* Copy the returned key to driver private data */
      if (action == CMD_ACT_GET) {
            u8 * buf_ptr = (u8 *) &pkeymaterial->keyParamSet;
            u8 * resp_end = (u8 *) (resp + le16_to_cpu(resp->size));

            while (buf_ptr < resp_end) {
                  struct MrvlIEtype_keyParamSet * pkeyparamset =
                      (struct MrvlIEtype_keyParamSet *) buf_ptr;
                  struct enc_key * pkey;
                  u16 param_set_len = le16_to_cpu(pkeyparamset->length);
                  u16 key_len = le16_to_cpu(pkeyparamset->keylen);
                  u16 key_flags = le16_to_cpu(pkeyparamset->keyinfo);
                  u16 key_type = le16_to_cpu(pkeyparamset->keytypeid);
                  u8 * end;

                  end = (u8 *) pkeyparamset + sizeof (pkeyparamset->type)
                                            + sizeof (pkeyparamset->length)
                                            + param_set_len;
                  /* Make sure we don't access past the end of the IEs */
                  if (end > resp_end)
                        break;

                  if (key_flags & KEY_INFO_WPA_UNICAST)
                        pkey = &adapter->wpa_unicast_key;
                  else if (key_flags & KEY_INFO_WPA_MCAST)
                        pkey = &adapter->wpa_mcast_key;
                  else
                        break;

                  /* Copy returned key into driver */
                  memset(pkey, 0, sizeof(struct enc_key));
                  if (key_len > sizeof(pkey->key))
                        break;
                  pkey->type = key_type;
                  pkey->flags = key_flags;
                  pkey->len = key_len;
                  memcpy(pkey->key, pkeyparamset->key, pkey->len);

                  buf_ptr = end + 1;
            }
      }

      lbs_deb_enter(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_mac_address(wlan_private * priv,
                               struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_mac_address *macadd = &resp->params.macadd;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      memcpy(adapter->current_addr, macadd->macadd, ETH_ALEN);

      lbs_deb_enter(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_rf_tx_power(wlan_private * priv,
                               struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      adapter->txpowerlevel = le16_to_cpu(rtp->currentlevel);

      lbs_deb_cmd("TX power currently %d\n", adapter->txpowerlevel);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_rate_adapt_rateset(wlan_private * priv,
                                    struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_rate_adapt_rateset *rates = &resp->params.rateset;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      if (rates->action == CMD_ACT_GET) {
            adapter->enablehwauto = le16_to_cpu(rates->enablehwauto);
            adapter->ratebitmap = le16_to_cpu(rates->bitmap);
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_data_rate(wlan_private * priv,
                             struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_data_rate *pdatarate = &resp->params.drate;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      lbs_deb_hex(LBS_DEB_CMD, "DATA_RATE_RESP", (u8 *) pdatarate,
            sizeof(struct cmd_ds_802_11_data_rate));

      /* FIXME: get actual rates FW can do if this command actually returns
       * all data rates supported.
       */
      adapter->cur_rate = libertas_fw_index_to_data_rate(pdatarate->rates[0]);
      lbs_deb_cmd("DATA_RATE: current rate 0x%02x\n", adapter->cur_rate);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_rf_channel(wlan_private * priv,
                              struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_rf_channel *rfchannel = &resp->params.rfchannel;
      wlan_adapter *adapter = priv->adapter;
      u16 action = le16_to_cpu(rfchannel->action);
      u16 newchannel = le16_to_cpu(rfchannel->currentchannel);

      lbs_deb_enter(LBS_DEB_CMD);

      if (action == CMD_OPT_802_11_RF_CHANNEL_GET
          && adapter->curbssparams.channel != newchannel) {
            lbs_deb_cmd("channel switch from %d to %d\n",
                   adapter->curbssparams.channel, newchannel);

            /* Update the channel again */
            adapter->curbssparams.channel = newchannel;
      }

      lbs_deb_enter(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_rssi(wlan_private * priv,
                        struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      /* store the non average value */
      adapter->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
      adapter->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);

      adapter->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
      adapter->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);

      adapter->RSSI[TYPE_BEACON][TYPE_NOAVG] =
          CAL_RSSI(adapter->SNR[TYPE_BEACON][TYPE_NOAVG],
                 adapter->NF[TYPE_BEACON][TYPE_NOAVG]);

      adapter->RSSI[TYPE_BEACON][TYPE_AVG] =
          CAL_RSSI(adapter->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
                 adapter->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);

      lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
             adapter->RSSI[TYPE_BEACON][TYPE_NOAVG],
             adapter->RSSI[TYPE_BEACON][TYPE_AVG]);

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_802_11_eeprom_access(wlan_private * priv,
                          struct cmd_ds_command *resp)
{
      wlan_adapter *adapter = priv->adapter;
      struct wlan_ioctl_regrdwr *pbuf;
      pbuf = (struct wlan_ioctl_regrdwr *) adapter->prdeeprom;

      lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
             le16_to_cpu(resp->params.rdeeprom.bytecount));
      if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
            pbuf->NOB = 0;
            lbs_deb_cmd("EEPROM read length too big\n");
            return -1;
      }
      pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
      if (pbuf->NOB > 0) {

            memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
                   le16_to_cpu(resp->params.rdeeprom.bytecount));
            lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
                  le16_to_cpu(resp->params.rdeeprom.bytecount));
      }
      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int wlan_ret_get_log(wlan_private * priv,
                      struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_CMD);

      /* Stored little-endian */
      memcpy(&adapter->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static int libertas_ret_802_11_enable_rsn(wlan_private * priv,
                                          struct cmd_ds_command *resp)
{
      struct cmd_ds_802_11_enable_rsn *enable_rsn = &resp->params.enbrsn;
      wlan_adapter *adapter = priv->adapter;
      u32 * pdata_buf = adapter->cur_cmd->pdata_buf;

      lbs_deb_enter(LBS_DEB_CMD);

      if (enable_rsn->action == cpu_to_le16(CMD_ACT_GET)) {
            if (pdata_buf)
                  *pdata_buf = (u32) le16_to_cpu(enable_rsn->enable);
      }

      lbs_deb_leave(LBS_DEB_CMD);
      return 0;
}

static inline int handle_cmd_response(u16 respcmd,
                              struct cmd_ds_command *resp,
                              wlan_private *priv)
{
      int ret = 0;
      unsigned long flags;
      wlan_adapter *adapter = priv->adapter;

      lbs_deb_enter(LBS_DEB_HOST);

      switch (respcmd) {
      case CMD_RET(CMD_MAC_REG_ACCESS):
      case CMD_RET(CMD_BBP_REG_ACCESS):
      case CMD_RET(CMD_RF_REG_ACCESS):
            ret = wlan_ret_reg_access(priv, respcmd, resp);
            break;

      case CMD_RET(CMD_GET_HW_SPEC):
            ret = wlan_ret_get_hw_spec(priv, resp);
            break;

      case CMD_RET(CMD_802_11_SCAN):
            ret = libertas_ret_80211_scan(priv, resp);
            break;

      case CMD_RET(CMD_802_11_GET_LOG):
            ret = wlan_ret_get_log(priv, resp);
            break;

      case CMD_RET_802_11_ASSOCIATE:
      case CMD_RET(CMD_802_11_ASSOCIATE):
      case CMD_RET(CMD_802_11_REASSOCIATE):
            ret = libertas_ret_80211_associate(priv, resp);
            break;

      case CMD_RET(CMD_802_11_DISASSOCIATE):
      case CMD_RET(CMD_802_11_DEAUTHENTICATE):
            ret = libertas_ret_80211_disassociate(priv, resp);
            break;

      case CMD_RET(CMD_802_11_AD_HOC_START):
      case CMD_RET(CMD_802_11_AD_HOC_JOIN):
            ret = libertas_ret_80211_ad_hoc_start(priv, resp);
            break;

      case CMD_RET(CMD_802_11_GET_STAT):
            ret = wlan_ret_802_11_stat(priv, resp);
            break;

      case CMD_RET(CMD_802_11_SNMP_MIB):
            ret = wlan_ret_802_11_snmp_mib(priv, resp);
            break;

      case CMD_RET(CMD_802_11_RF_TX_POWER):
            ret = wlan_ret_802_11_rf_tx_power(priv, resp);
            break;

      case CMD_RET(CMD_802_11_SET_AFC):
      case CMD_RET(CMD_802_11_GET_AFC):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            memmove(adapter->cur_cmd->pdata_buf, &resp->params.afc,
                  sizeof(struct cmd_ds_802_11_afc));
            spin_unlock_irqrestore(&adapter->driver_lock, flags);

            break;

      case CMD_RET(CMD_MAC_MULTICAST_ADR):
      case CMD_RET(CMD_MAC_CONTROL):
      case CMD_RET(CMD_802_11_SET_WEP):
      case CMD_RET(CMD_802_11_RESET):
      case CMD_RET(CMD_802_11_AUTHENTICATE):
      case CMD_RET(CMD_802_11_RADIO_CONTROL):
      case CMD_RET(CMD_802_11_BEACON_STOP):
            break;

      case CMD_RET(CMD_802_11_ENABLE_RSN):
            ret = libertas_ret_802_11_enable_rsn(priv, resp);
            break;

      case CMD_RET(CMD_802_11_DATA_RATE):
            ret = wlan_ret_802_11_data_rate(priv, resp);
            break;
      case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
            ret = wlan_ret_802_11_rate_adapt_rateset(priv, resp);
            break;
      case CMD_RET(CMD_802_11_RF_CHANNEL):
            ret = wlan_ret_802_11_rf_channel(priv, resp);
            break;

      case CMD_RET(CMD_802_11_RSSI):
            ret = wlan_ret_802_11_rssi(priv, resp);
            break;

      case CMD_RET(CMD_802_11_MAC_ADDRESS):
            ret = wlan_ret_802_11_mac_address(priv, resp);
            break;

      case CMD_RET(CMD_802_11_AD_HOC_STOP):
            ret = libertas_ret_80211_ad_hoc_stop(priv, resp);
            break;

      case CMD_RET(CMD_802_11_KEY_MATERIAL):
            ret = wlan_ret_802_11_key_material(priv, resp);
            break;

      case CMD_RET(CMD_802_11_EEPROM_ACCESS):
            ret = wlan_ret_802_11_eeprom_access(priv, resp);
            break;

      case CMD_RET(CMD_802_11D_DOMAIN_INFO):
            ret = libertas_ret_802_11d_domain_info(priv, resp);
            break;

      case CMD_RET(CMD_802_11_SLEEP_PARAMS):
            ret = wlan_ret_802_11_sleep_params(priv, resp);
            break;
      case CMD_RET(CMD_802_11_INACTIVITY_TIMEOUT):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            *((u16 *) adapter->cur_cmd->pdata_buf) =
                le16_to_cpu(resp->params.inactivity_timeout.timeout);
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            break;

      case CMD_RET(CMD_802_11_TPC_CFG):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            memmove(adapter->cur_cmd->pdata_buf, &resp->params.tpccfg,
                  sizeof(struct cmd_ds_802_11_tpc_cfg));
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            break;
      case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            memmove(adapter->cur_cmd->pdata_buf, &resp->params.ledgpio,
                  sizeof(struct cmd_ds_802_11_led_ctrl));
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            break;
      case CMD_RET(CMD_802_11_PWR_CFG):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            memmove(adapter->cur_cmd->pdata_buf, &resp->params.pwrcfg,
                  sizeof(struct cmd_ds_802_11_pwr_cfg));
            spin_unlock_irqrestore(&adapter->driver_lock, flags);

            break;

      case CMD_RET(CMD_GET_TSF):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            memcpy(priv->adapter->cur_cmd->pdata_buf,
                   &resp->params.gettsf.tsfvalue, sizeof(u64));
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            break;
      case CMD_RET(CMD_BT_ACCESS):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            if (adapter->cur_cmd->pdata_buf)
                  memcpy(adapter->cur_cmd->pdata_buf,
                         &resp->params.bt.addr1, 2 * ETH_ALEN);
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            break;
      case CMD_RET(CMD_FWT_ACCESS):
            spin_lock_irqsave(&adapter->driver_lock, flags);
            if (adapter->cur_cmd->pdata_buf)
                  memcpy(adapter->cur_cmd->pdata_buf, &resp->params.fwt,
                         sizeof(resp->params.fwt));
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            break;
      case CMD_RET(CMD_MESH_ACCESS):
            if (adapter->cur_cmd->pdata_buf)
                  memcpy(adapter->cur_cmd->pdata_buf, &resp->params.mesh,
                         sizeof(resp->params.mesh));
            break;
      default:
            lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
                      resp->command);
            break;
      }
      lbs_deb_leave(LBS_DEB_HOST);
      return ret;
}

int libertas_process_rx_command(wlan_private * priv)
{
      u16 respcmd;
      struct cmd_ds_command *resp;
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;
      ulong flags;
      u16 result;

      lbs_deb_enter(LBS_DEB_HOST);

      /* Now we got response from FW, cancel the command timer */
      del_timer(&adapter->command_timer);

      mutex_lock(&adapter->lock);
      spin_lock_irqsave(&adapter->driver_lock, flags);

      if (!adapter->cur_cmd) {
            lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
            ret = -1;
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            goto done;
      }
      resp = (struct cmd_ds_command *)(adapter->cur_cmd->bufvirtualaddr);

      respcmd = le16_to_cpu(resp->command);
      result = le16_to_cpu(resp->result);

      lbs_deb_host("CMD_RESP: response 0x%04x, size %d, jiffies %lu\n",
            respcmd, priv->upld_len, jiffies);
      lbs_deb_hex(LBS_DEB_HOST, "CMD_RESP", adapter->cur_cmd->bufvirtualaddr,
                priv->upld_len);

      if (!(respcmd & 0x8000)) {
            lbs_deb_host("invalid response!\n");
            adapter->cur_cmd_retcode = -1;
            __libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
            adapter->nr_cmd_pending--;
            adapter->cur_cmd = NULL;
            spin_unlock_irqrestore(&adapter->driver_lock, flags);
            ret = -1;
            goto done;
      }

      /* Store the response code to cur_cmd_retcode. */
      adapter->cur_cmd_retcode = result;;

      if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
            struct cmd_ds_802_11_ps_mode *psmode = &resp->params.psmode;
            u16 action = le16_to_cpu(psmode->action);

            lbs_deb_host(
                   "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
                   result, action);

            if (result) {
                  lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
                            result);
                  /*
                   * We should not re-try enter-ps command in
                   * ad-hoc mode. It takes place in
                   * libertas_execute_next_command().
                   */
                  if (adapter->mode == IW_MODE_ADHOC &&
                      action == CMD_SUBCMD_ENTER_PS)
                        adapter->psmode = WLAN802_11POWERMODECAM;
            } else if (action == CMD_SUBCMD_ENTER_PS) {
                  adapter->needtowakeup = 0;
                  adapter->psstate = PS_STATE_AWAKE;

                  lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
                  if (adapter->connect_status != LIBERTAS_CONNECTED) {
                        /*
                         * When Deauth Event received before Enter_PS command
                         * response, We need to wake up the firmware.
                         */
                        lbs_deb_host(
                               "disconnected, invoking libertas_ps_wakeup\n");

                        spin_unlock_irqrestore(&adapter->driver_lock, flags);
                        mutex_unlock(&adapter->lock);
                        libertas_ps_wakeup(priv, 0);
                        mutex_lock(&adapter->lock);
                        spin_lock_irqsave(&adapter->driver_lock, flags);
                  }
            } else if (action == CMD_SUBCMD_EXIT_PS) {
                  adapter->needtowakeup = 0;
                  adapter->psstate = PS_STATE_FULL_POWER;
                  lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
            } else {
                  lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
            }

            __libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
            adapter->nr_cmd_pending--;
            adapter->cur_cmd = NULL;
            spin_unlock_irqrestore(&adapter->driver_lock, flags);

            ret = 0;
            goto done;
      }

      if (adapter->cur_cmd->cmdflags & CMD_F_HOSTCMD) {
            /* Copy the response back to response buffer */
            memcpy(adapter->cur_cmd->pdata_buf, resp,
                   le16_to_cpu(resp->size));
            adapter->cur_cmd->cmdflags &= ~CMD_F_HOSTCMD;
      }

      /* If the command is not successful, cleanup and return failure */
      if ((result != 0 || !(respcmd & 0x8000))) {
            lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
                   result, respcmd);
            /*
             * Handling errors here
             */
            switch (respcmd) {
            case CMD_RET(CMD_GET_HW_SPEC):
            case CMD_RET(CMD_802_11_RESET):
                  lbs_deb_host("CMD_RESP: reset failed\n");
                  break;

            }

            __libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
            adapter->nr_cmd_pending--;
            adapter->cur_cmd = NULL;
            spin_unlock_irqrestore(&adapter->driver_lock, flags);

            ret = -1;
            goto done;
      }

      spin_unlock_irqrestore(&adapter->driver_lock, flags);

      ret = handle_cmd_response(respcmd, resp, priv);

      spin_lock_irqsave(&adapter->driver_lock, flags);
      if (adapter->cur_cmd) {
            /* Clean up and Put current command back to cmdfreeq */
            __libertas_cleanup_and_insert_cmd(priv, adapter->cur_cmd);
            adapter->nr_cmd_pending--;
            WARN_ON(adapter->nr_cmd_pending > 128);
            adapter->cur_cmd = NULL;
      }
      spin_unlock_irqrestore(&adapter->driver_lock, flags);

done:
      mutex_unlock(&adapter->lock);
      lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
      return ret;
}

int libertas_process_event(wlan_private * priv)
{
      int ret = 0;
      wlan_adapter *adapter = priv->adapter;
      u32 eventcause;

      lbs_deb_enter(LBS_DEB_CMD);

      spin_lock_irq(&adapter->driver_lock);
      eventcause = adapter->eventcause;
      spin_unlock_irq(&adapter->driver_lock);

      lbs_deb_cmd("event cause 0x%x\n", eventcause);

      switch (eventcause >> SBI_EVENT_CAUSE_SHIFT) {
      case MACREG_INT_CODE_LINK_SENSED:
            lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
            break;

      case MACREG_INT_CODE_DEAUTHENTICATED:
            lbs_deb_cmd("EVENT: deauthenticated\n");
            libertas_mac_event_disconnected(priv);
            break;

      case MACREG_INT_CODE_DISASSOCIATED:
            lbs_deb_cmd("EVENT: disassociated\n");
            libertas_mac_event_disconnected(priv);
            break;

      case MACREG_INT_CODE_LINK_LOSE_NO_SCAN:
            lbs_deb_cmd("EVENT: link lost\n");
            libertas_mac_event_disconnected(priv);
            break;

      case MACREG_INT_CODE_PS_SLEEP:
            lbs_deb_cmd("EVENT: sleep\n");

            /* handle unexpected PS SLEEP event */
            if (adapter->psstate == PS_STATE_FULL_POWER) {
                  lbs_deb_cmd(
                         "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
                  break;
            }
            adapter->psstate = PS_STATE_PRE_SLEEP;

            libertas_ps_confirm_sleep(priv, (u16) adapter->psmode);

            break;

      case MACREG_INT_CODE_PS_AWAKE:
            lbs_deb_cmd("EVENT: awake\n");

            /* handle unexpected PS AWAKE event */
            if (adapter->psstate == PS_STATE_FULL_POWER) {
                  lbs_deb_cmd(
                         "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
                  break;
            }

            adapter->psstate = PS_STATE_AWAKE;

            if (adapter->needtowakeup) {
                  /*
                   * wait for the command processing to finish
                   * before resuming sending
                   * adapter->needtowakeup will be set to FALSE
                   * in libertas_ps_wakeup()
                   */
                  lbs_deb_cmd("waking up ...\n");
                  libertas_ps_wakeup(priv, 0);
            }
            break;

      case MACREG_INT_CODE_MIC_ERR_UNICAST:
            lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
            handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
            break;

      case MACREG_INT_CODE_MIC_ERR_MULTICAST:
            lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
            handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
            break;
      case MACREG_INT_CODE_MIB_CHANGED:
      case MACREG_INT_CODE_INIT_DONE:
            break;

      case MACREG_INT_CODE_ADHOC_BCN_LOST:
            lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
            break;

      case MACREG_INT_CODE_RSSI_LOW:
            lbs_pr_alert("EVENT: rssi low\n");
            break;
      case MACREG_INT_CODE_SNR_LOW:
            lbs_pr_alert("EVENT: snr low\n");
            break;
      case MACREG_INT_CODE_MAX_FAIL:
            lbs_pr_alert("EVENT: max fail\n");
            break;
      case MACREG_INT_CODE_RSSI_HIGH:
            lbs_pr_alert("EVENT: rssi high\n");
            break;
      case MACREG_INT_CODE_SNR_HIGH:
            lbs_pr_alert("EVENT: snr high\n");
            break;

      case MACREG_INT_CODE_MESH_AUTO_STARTED:
            /* Ignore spurious autostart events if autostart is disabled */
            if (!priv->mesh_autostart_enabled) {
                  lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
                  break;
            }
            lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
            adapter->connect_status = LIBERTAS_CONNECTED;
            if (priv->mesh_open == 1) {
                  netif_wake_queue(priv->mesh_dev);
                  netif_carrier_on(priv->mesh_dev);
            }
            adapter->mode = IW_MODE_ADHOC;
            schedule_work(&priv->sync_channel);
            break;

      default:
            lbs_pr_alert("EVENT: unknown event id 0x%04x\n",
                   eventcause >> SBI_EVENT_CAUSE_SHIFT);
            break;
      }

      spin_lock_irq(&adapter->driver_lock);
      adapter->eventcause = 0;
      spin_unlock_irq(&adapter->driver_lock);

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

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