?? sync.c
字號(hào):
// Init Variable IE structure
pVIE = (PNDIS_802_11_VARIABLE_IEs) VarIE;
pVIE->Length = 0;
TimeStamp.vv.LowPart = 0;
TimeStamp.vv.HighPart = 0;
if (MlmeStartReqSanity(pAd, Elem->Msg, Elem->MsgLen, Ssid, &SsidLen))
{
// reset all the timers
RTMPCancelTimer(&pAd->MlmeAux.ScanTimer);
RTMPCancelTimer(&pAd->MlmeAux.BeaconTimer);
//
// Start a new IBSS. All IBSS parameters are decided now....
//
pAd->MlmeAux.BssType = BSS_ADHOC;
NdisMoveMemory(pAd->MlmeAux.Ssid, Ssid, SsidLen);
pAd->MlmeAux.SsidLen = SsidLen;
// generate a radom number as BSSID
MacAddrRandomBssid(pAd, pAd->MlmeAux.Bssid);
Privacy = (pAd->PortCfg.WepStatus == Ndis802_11Encryption1Enabled) ||
(pAd->PortCfg.WepStatus == Ndis802_11Encryption2Enabled) ||
(pAd->PortCfg.WepStatus == Ndis802_11Encryption3Enabled);
pAd->MlmeAux.CapabilityInfo = CAP_GENERATE(0,1,Privacy, (pAd->PortCfg.TxPreamble == Rt802_11PreambleShort), 1);
pAd->MlmeAux.BeaconPeriod = pAd->PortCfg.BeaconPeriod;
pAd->MlmeAux.AtimWin = pAd->PortCfg.AtimWin;
pAd->MlmeAux.Channel = pAd->PortCfg.Channel;
pAd->MlmeAux.SupRateLen= pAd->PortCfg.SupRateLen;
NdisMoveMemory(pAd->MlmeAux.SupRate, pAd->PortCfg.SupRate, MAX_LEN_OF_SUPPORTED_RATES);
RTMPCheckRates(pAd, pAd->MlmeAux.SupRate, &pAd->MlmeAux.SupRateLen);
pAd->MlmeAux.ExtRateLen = pAd->PortCfg.ExtRateLen;
NdisMoveMemory(pAd->MlmeAux.ExtRate, pAd->PortCfg.ExtRate, MAX_LEN_OF_SUPPORTED_RATES);
RTMPCheckRates(pAd, pAd->MlmeAux.ExtRate, &pAd->MlmeAux.ExtRateLen);
// temporarily not support QOS in IBSS
NdisZeroMemory(&pAd->MlmeAux.APEdcaParm, sizeof(EDCA_PARM));
NdisZeroMemory(&pAd->MlmeAux.APQbssLoad, sizeof(QBSS_LOAD_PARM));
NdisZeroMemory(&pAd->MlmeAux.APQosCapability, sizeof(QOS_CAPABILITY_PARM));
AsicSwitchChannel(pAd, pAd->MlmeAux.Channel);
AsicLockChannel(pAd, pAd->MlmeAux.Channel);
DBGPRINT(RT_DEBUG_TRACE, "SYNC - MlmeStartReqAction(ch= %d,sup rates= %d, ext rates=%d)\n",
pAd->MlmeAux.Channel, pAd->MlmeAux.SupRateLen, pAd->MlmeAux.ExtRateLen);
#ifdef SINGLE_ADHOC_LINKUP
// Add itself as the entry within BSS table
Bssidx = BssTableSearch(&pAd->ScanTab, pAd->MlmeAux.Bssid, pAd->MlmeAux.Channel);
if (Bssidx == BSS_NOT_FOUND)
{
Bssidx = BssTableSetEntry(pAd, &pAd->ScanTab, pAd->MlmeAux.Bssid,
Ssid, SsidLen, pAd->MlmeAux.BssType, pAd->MlmeAux.BeaconPeriod,
&CfParm, pAd->MlmeAux.AtimWin, pAd->MlmeAux.CapabilityInfo,
pAd->MlmeAux.SupRate, pAd->MlmeAux.SupRateLen, pAd->MlmeAux.ExtRate, pAd->MlmeAux.ExtRateLen,
pAd->MlmeAux.Channel, pAd->BbpRssiToDbmDelta - 30, TimeStamp, 0, NULL, NULL, NULL, 0, pVIE);
}
#endif
pAd->Mlme.SyncMachine.CurrState = SYNC_IDLE;
Status = MLME_SUCCESS;
MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_START_CONF, 2, &Status);
}
else
{
DBGPRINT_ERR("SYNC - MlmeStartReqAction() sanity check fail.\n");
pAd->Mlme.SyncMachine.CurrState = SYNC_IDLE;
Status = MLME_INVALID_FORMAT;
MlmeEnqueue(pAd, MLME_CNTL_STATE_MACHINE, MT2_START_CONF, 2, &Status);
}
}
/*
==========================================================================
Description:
peer sends beacon back when scanning
==========================================================================
*/
VOID PeerBeaconAtScanAction(
IN PRTMP_ADAPTER pAd,
IN MLME_QUEUE_ELEM *Elem)
{
UCHAR Bssid[MAC_ADDR_LEN], Addr2[MAC_ADDR_LEN];
UCHAR Ssid[MAX_LEN_OF_SSID], BssType, Channel, NewChannel,
SsidLen, DtimCount, DtimPeriod, BcastFlag, MessageToMe;
CF_PARM CfParm;
USHORT BeaconPeriod, AtimWin, CapabilityInfo;
PFRAME_802_11 pFrame;
LARGE_INTEGER TimeStamp;
UCHAR Erp;
UCHAR SupRate[MAX_LEN_OF_SUPPORTED_RATES], ExtRate[MAX_LEN_OF_SUPPORTED_RATES];
UCHAR SupRateLen, ExtRateLen;
UCHAR LenVIE;
UCHAR CkipFlag;
UCHAR AironetCellPowerLimit;
EDCA_PARM EdcaParm;
QBSS_LOAD_PARM QbssLoad;
QOS_CAPABILITY_PARM QosCapability;
ULONG RalinkIe;
UCHAR VarIE[MAX_VIE_LEN]; // Total VIE length = MAX_VIE_LEN - -5
NDIS_802_11_VARIABLE_IEs *pVIE = NULL;
// NdisFillMemory(Ssid, MAX_LEN_OF_SSID, 0x00);
pFrame = (PFRAME_802_11) Elem->Msg;
// Init Variable IE structure
pVIE = (PNDIS_802_11_VARIABLE_IEs) VarIE;
pVIE->Length = 0;
if (PeerBeaconAndProbeRspSanity(pAd,
Elem->Msg,
Elem->MsgLen,
Addr2,
Bssid,
Ssid,
&SsidLen,
&BssType,
&BeaconPeriod,
&Channel,
&NewChannel,
&TimeStamp,
&CfParm,
&AtimWin,
&CapabilityInfo,
&Erp,
&DtimCount,
&DtimPeriod,
&BcastFlag,
&MessageToMe,
SupRate,
&SupRateLen,
ExtRate,
&ExtRateLen,
&CkipFlag,
&AironetCellPowerLimit,
&EdcaParm,
&QbssLoad,
&QosCapability,
&RalinkIe,
&LenVIE,
pVIE))
{
ULONG Idx;
UCHAR Rssi = 0;
CHAR RealRssi;
// This correct im-proper RSSI indication during SITE SURVEY issue.
// Always report bigger RSSI during SCANNING when receiving multiple BEACONs from the same AP.
// This case happens because BEACONs come from adjacent channels, so RSSI become weaker as we
// switch to more far away channels.
if (Elem->Channel != Channel)
return;
Idx = BssTableSearch(&pAd->ScanTab, Bssid, Channel);
if (Idx != BSS_NOT_FOUND)
Rssi = pAd->ScanTab.BssEntry[Idx].Rssi;
RealRssi = ConvertToRssi(pAd, Elem->Rssi, RSSI_NO_1);
if ((RealRssi + pAd->BbpRssiToDbmDelta) > Rssi)
Rssi = RealRssi + pAd->BbpRssiToDbmDelta;
// DBGPRINT(RT_DEBUG_TRACE, "SYNC - PeerBeaconAtScanAction (SubType=%d, SsidLen=%d, Ssid=%s)\n", pFrame->Hdr.FC.SubType, SsidLen,Ssid);
// Back Door Mechanism: Get AP Cfg Data
if (pAd->PortCfg.bGetAPConfig)
{
CHAR CfgData[MAX_CFG_BUFFER_LEN+1] = {0};
if (BackDoorProbeRspSanity(pAd, Elem->Msg, Elem->MsgLen, CfgData))
{
printk("MlmeEnqueueForRecv: CfgData(len:%d):\n%s\n", strlen(CfgData), CfgData);
pAd->PortCfg.bGetAPConfig = FALSE;
}
}
Idx = BssTableSetEntry(pAd, &pAd->ScanTab, Bssid, Ssid, SsidLen, BssType,
BeaconPeriod, &CfParm, AtimWin, CapabilityInfo, SupRate,
SupRateLen, ExtRate, ExtRateLen, Channel, Rssi, TimeStamp, CkipFlag,
&EdcaParm, &QosCapability, &QbssLoad, LenVIE, pVIE);
}
// sanity check fail, ignored
}
/*
==========================================================================
Description:
When waiting joining the (I)BSS, beacon received from external
==========================================================================
*/
VOID PeerBeaconAtJoinAction(
IN PRTMP_ADAPTER pAd,
IN MLME_QUEUE_ELEM *Elem)
{
UCHAR Bssid[MAC_ADDR_LEN], Addr2[MAC_ADDR_LEN];
UCHAR Ssid[MAX_LEN_OF_SSID], SsidLen, BssType, Channel, MessageToMe,
DtimCount, DtimPeriod, BcastFlag, NewChannel;
LARGE_INTEGER TimeStamp;
USHORT BeaconPeriod, AtimWin, CapabilityInfo;
// UINT FrameLen = 0;
CF_PARM Cf;
UCHAR Erp;
UCHAR SupRate[MAX_LEN_OF_SUPPORTED_RATES], ExtRate[MAX_LEN_OF_SUPPORTED_RATES];
UCHAR SupRateLen, ExtRateLen;
UCHAR CkipFlag;
UCHAR LenVIE;
UCHAR AironetCellPowerLimit;
EDCA_PARM EdcaParm;
QBSS_LOAD_PARM QbssLoad;
QOS_CAPABILITY_PARM QosCapability;
USHORT Status;
CHAR RealRssi = -85; //assume -85 dB
UCHAR VarIE[MAX_VIE_LEN]; // Total VIE length = MAX_VIE_LEN - -5
NDIS_802_11_VARIABLE_IEs *pVIE = NULL;
ULONG RalinkIe;
ULONG Idx;
UCHAR PeerTxType;
// Init Variable IE structure
pVIE = (PNDIS_802_11_VARIABLE_IEs) VarIE;
pVIE->Length = 0;
if (PeerBeaconAndProbeRspSanity(pAd,
Elem->Msg,
Elem->MsgLen,
Addr2,
Bssid,
Ssid,
&SsidLen,
&BssType,
&BeaconPeriod,
&Channel,
&NewChannel,
&TimeStamp,
&Cf,
&AtimWin,
&CapabilityInfo,
&Erp,
&DtimCount,
&DtimPeriod,
&BcastFlag,
&MessageToMe,
SupRate,
&SupRateLen,
ExtRate,
&ExtRateLen,
&CkipFlag,
&AironetCellPowerLimit,
&EdcaParm,
&QbssLoad,
&QosCapability,
&RalinkIe,
&LenVIE,
pVIE))
{
// Disqualify 11b only adhoc when we are in 11g only adhoc mode
if (BssType == BSS_ADHOC)
{
PeerTxType = PeerTxTypeInUseSanity(Channel, SupRate, SupRateLen, ExtRate, ExtRateLen);
if ((pAd->PortCfg.AdhocMode == ADHOC_11G) && (PeerTxType == CCK_RATE))
{
return;
}
else if ((pAd->PortCfg.AdhocMode == ADHOC_11B) && (PeerTxType == OFDM_RATE))
{
return;
}
}
// BEACON from desired BSS/IBSS found. We should be able to decide most
// BSS parameters here.
// Q. But what happen if this JOIN doesn't conclude a successful ASSOCIATEION?
// Do we need to receover back all parameters belonging to previous BSS?
// A. Should be not. There's no back-door recover to previous AP. It still need
// a new JOIN-AUTH-ASSOC sequence.
if (MAC_ADDR_EQUAL(pAd->MlmeAux.Bssid, Bssid))
{
DBGPRINT(RT_DEBUG_TRACE, "SYNC - receive desired BEACON at JoinWaitBeacon... Channel = %d\n", Channel);
RTMPCancelTimer(&pAd->MlmeAux.BeaconTimer);
RealRssi = ConvertToRssi(pAd, Elem->Rssi, RSSI_NO_1);
pAd->PortCfg.LastRssi = RealRssi + pAd->BbpRssiToDbmDelta;
pAd->PortCfg.AvgRssi = pAd->PortCfg.LastRssi;
pAd->PortCfg.AvgRssiX8 = pAd->PortCfg.AvgRssi << 3;
//
// We need to check if SSID only set to any, then we can record the current SSID.
// Otherwise will cause hidden SSID association failed.
//
if (pAd->MlmeAux.SsidLen == 0)
{
NdisMoveMemory(pAd->MlmeAux.Ssid, Ssid, SsidLen);
pAd->MlmeAux.SsidLen = SsidLen;
}
else
{
Idx = BssSsidTableSearch(&pAd->ScanTab, Bssid, pAd->MlmeAux.Ssid, pAd->MlmeAux.SsidLen, Channel);
if (Idx != BSS_NOT_FOUND)
{
//
// Multiple SSID case, used correct CapabilityInfo
//
CapabilityInfo = pAd->ScanTab.BssEntry[Idx].CapabilityInfo;
}
}
pAd->MlmeAux.CapabilityInfo = CapabilityInfo & SUPPORTED_CAPABILITY_INFO;
pAd->MlmeAux.BssType = BssType;
pAd->MlmeAux.BeaconPeriod = BeaconPeriod;
pAd->MlmeAux.Channel = Channel;
pAd->MlmeAux.AtimWin = AtimWin;
pAd->MlmeAux.CfpPeriod = Cf.CfpPeriod;
pAd->MlmeAux.CfpMaxDuration = Cf.CfpMaxDuration;
pAd->MlmeAux.APRalinkIe = RalinkIe;
// Copy AP's supported rate to MlmeAux for creating assoication request
// Also filter out not supported rate
pAd->MlmeAux.SupRateLen = SupRateLen;
NdisMoveMemory(pAd->MlmeAux.SupRate, SupRate, SupRateLen);
RTMPCheckRates(pAd, pAd->MlmeAux.SupRate, &pAd->MlmeAux.SupRateLen);
pAd->MlmeAux.ExtRateLen = ExtRateLen;
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