assoc.c

台湾RALink公司的 rt2570无线 802.11g 网卡的 驱动的源代码 ,支持linux2.4以上的 内河

            {
                // go to procedure listed on page 376
				// Mask out unnecessary capability information
				CapabilityInfo &= SUPPORTED_CAPABILITY_INFO;  // pAd->PortCfg.SupportedCapabilityInfo;
                AssocPostProc(pAd, &Addr2, CapabilityInfo, Aid, Rates, RatesLen, ExtendedRateIeExist);
            } 
            pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
            MlmeCntlConfirm(pAd, MT2_ASSOC_CONF, Status);
        } 
    }
    else
    {
        DBGPRINT(RT_DEBUG_TRACE, "ASSOC - PeerAssocRspAction() sanity check fail\n");
    }
}

/*
    ==========================================================================
    Description:
        peer sends reassoc rsp
    Parametrs:
        Elem - MLME message cntaining the received frame
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID PeerReassocRspAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    USHORT      CapabilityInfo;
    USHORT      Status;
    USHORT      Aid;
    UCHAR       Rates[MAX_LEN_OF_SUPPORTED_RATES];
    UCHAR       RatesLen;
    MACADDR     Addr2;
    BOOLEAN     ExtendedRateIeExist;

    if(PeerAssocRspSanity(pAd, Elem->Msg, Elem->MsgLen, &Addr2, &CapabilityInfo, &Status, &Aid, Rates, &RatesLen, &ExtendedRateIeExist)) 
    {
        if(MAC_ADDR_EQUAL(&Addr2, &pAd->Mlme.AssocAux.Addr)) // The frame is for me ?
        {
            DBGPRINT(RT_DEBUG_TRACE, "ASSOC - receive REASSOC_RSP to me (status=%d)\n", Status);
            RTMPCancelTimer(&pAd->Mlme.AssocAux.ReassocTimer);
            
            if(Status == MLME_SUCCESS) 
            {
				// Mask out unnecessary capability information
				CapabilityInfo &= SUPPORTED_CAPABILITY_INFO;  // pAd->PortCfg.SupportedCapabilityInfo;
                // go to procedure listed on page 376
                AssocPostProc(pAd, &Addr2, CapabilityInfo, Aid, Rates, RatesLen, ExtendedRateIeExist);
            } 

            pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
            MlmeCntlConfirm(pAd, MT2_REASSOC_CONF, Status);
        } 
    }
    else
    {
        DBGPRINT(RT_DEBUG_TRACE, "ASSOC - PeerReassocRspAction() sanity check fail\n");
    }

}

/*
    ==========================================================================
    Description:
        procedures on IEEE 802.11/1999 p.376 
    Parametrs:
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID AssocPostProc(
    IN PRT2570ADAPTER pAd, 
    IN PMACADDR Addr2, 
    IN USHORT CapabilityInfo, 
    IN USHORT Aid, 
    IN UCHAR Rates[], 
    IN UCHAR RatesLen,
    IN BOOLEAN ExtendedRateIeExist) 
{
	ULONG Idx;
    UCHAR RateIe = IE_SUPP_RATES;
	UCHAR VarIesOffset;

    // 2003/12/11 -  skip the following because experiment show that we can not 
    // trust the "privacy" bit in AssocRsp. We can only trust "Privacy" bit specified in
    // BEACON and ProbeRsp.
    // pAd->PortCfg.PrivacyInvoked = CAP_IS_PRIVACY_ON(CapabilityInfo);
    
    pAd->PortCfg.Aid = Aid;
    NdisMoveMemory(pAd->PortCfg.SupportedRates, Rates, RatesLen);
    pAd->PortCfg.SupportedRatesLen = RatesLen;
    COPY_MAC_ADDR(&pAd->PortCfg.Bssid, Addr2);
    AsicSetBssid(pAd, &pAd->PortCfg.Bssid);

    // set listen interval
    pAd->PortCfg.DefaultListenCount = pAd->Mlme.AssocAux.ListenIntv;
//  pAd->PortCfg.CurrListenCount = pAd->Mlme.AssocAux.ListenIntv;

	// Set New WPA information
	Idx = BssTableSearch(&pAd->PortCfg.BssTab, Addr2);
	if (Idx == BSS_NOT_FOUND) 
	{
		DBGPRINT(RT_DEBUG_ERROR, "ASSOC - Can't find BSS after receiving Assoc response\n");
	}
	else
	{
		// Mod by James to fix OID_802_11_ASSOCIATION_INFORMATION
		pAd->PortCfg.AssocInfo.Length = sizeof(NDIS_802_11_ASSOCIATION_INFORMATION); //+ sizeof(NDIS_802_11_FIXED_IEs); 	// Filled in assoc request
		pAd->PortCfg.AssocInfo.AvailableResponseFixedIEs =
			NDIS_802_11_AI_RESFI_CAPABILITIES | NDIS_802_11_AI_RESFI_STATUSCODE | NDIS_802_11_AI_RESFI_ASSOCIATIONID;
		pAd->PortCfg.AssocInfo.ResponseFixedIEs.Capabilities  = CapabilityInfo;
		pAd->PortCfg.AssocInfo.ResponseFixedIEs.StatusCode    = MLME_SUCCESS;		// Should be success, add failed later
		pAd->PortCfg.AssocInfo.ResponseFixedIEs.AssociationId = Aid;

		// Copy BSS VarIEs to PortCfg associnfo structure.
		// First add Supported rates
		VarIesOffset = 0;
		NdisMoveMemory(pAd->PortCfg.ResVarIEs + VarIesOffset, &RateIe, 1);
		VarIesOffset += 1;
		NdisMoveMemory(pAd->PortCfg.ResVarIEs + VarIesOffset, &RatesLen, 1);
		VarIesOffset += 1;
		NdisMoveMemory(pAd->PortCfg.ResVarIEs + VarIesOffset, Rates, RatesLen);
		VarIesOffset += RatesLen;

		// Second add RSN
		NdisMoveMemory(pAd->PortCfg.ResVarIEs + VarIesOffset, pAd->PortCfg.BssTab.BssEntry[Idx].VarIEs, pAd->PortCfg.BssTab.BssEntry[Idx].VarIELen);
		VarIesOffset += pAd->PortCfg.BssTab.BssEntry[Idx].VarIELen;
		
		// Set Variable IEs Length
		pAd->PortCfg.ResVarIELen = VarIesOffset;
		pAd->PortCfg.AssocInfo.ResponseIELength = VarIesOffset;
	}
}

/*
    ==========================================================================
    Description:
        left part of IEEE 802.11/1999 p.374 
    Parameters:
        Elem - MLME message containing the received frame
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID PeerDisassocAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    MACADDR       Addr2;
    USHORT        Reason;

    if(PeerDisassocSanity(pAd, Elem->Msg, Elem->MsgLen, &Addr2, &Reason)) 
    {
        if (INFRA_ON(pAd) && MAC_ADDR_EQUAL(&pAd->PortCfg.Bssid, &Addr2)) 
        {
			DBGPRINT_RAW(RT_DEBUG_TRACE, "LinkDown(PeerDisassocAction(Reason = %d))\n", Reason);//steven:for debug
            LinkDown(pAd);
            pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;

            // 2002/11/21 -
            // patch RT2430/RT2420 hangup issue. We suspect this AP DIS-ASSOCIATE frame
            // is caused by PHY hangup, so we reset PHY, then auto recover the connection.
            // if this attempt fails, then remains in LinkDown and leaves the problem
            // to MlmePeriodicExec()
            // NICPatchRT2430Bug(pAd);
            pAd->RalinkCounters.BeenDisassociatedCount ++;
			// Remove auto recover effort when disassociate by AP, re-enable for patch 2430 only
            DBGPRINT(RT_DEBUG_TRACE, "ASSOC - Disassociated by AP, Auto Recovery attempt #%d\n", pAd->RalinkCounters.BeenDisassociatedCount);
            MlmeAutoReconnectLastSSID(pAd);
        }
    }
    else
    {
        DBGPRINT(RT_DEBUG_TRACE, "ASSOC - PeerDisassocAction() sanity check fail\n");
    }
}

/*
    ==========================================================================
    Description:
        what the state machine will do after assoc timeout
    Parameters:
        Elme -
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID AssocTimeoutAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - AssocTimeoutAction\n");
    pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
    MlmeCntlConfirm(pAd, MT2_ASSOC_CONF, MLME_REJ_TIMEOUT);
}

/*
    ==========================================================================
    Description:
        what the state machine will do after reassoc timeout
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID ReassocTimeoutAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - ReassocTimeoutAction\n");
    pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
    MlmeCntlConfirm(pAd, MT2_REASSOC_CONF, MLME_REJ_TIMEOUT);
}

/*
    ==========================================================================
    Description:
        what the state machine will do after disassoc timeout
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID DisassocTimeoutAction(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - DisassocTimeoutAction\n");
    pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
    MlmeCntlConfirm(pAd, MT2_DISASSOC_CONF, MLME_SUCCESS);
}

VOID InvalidStateWhenAssoc(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - InvalidStateWhenAssoc(state=%d), reset ASSOC state machine\n", 
        pAd->Mlme.AssocMachine.CurrState);
    pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
    MlmeCntlConfirm(pAd, MT2_ASSOC_CONF, MLME_STATE_MACHINE_REJECT);
}

VOID InvalidStateWhenReassoc(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - InvalidStateWhenReassoc(state=%d), reset ASSOC state machine\n", 
        pAd->Mlme.AssocMachine.CurrState);
    pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
    MlmeCntlConfirm(pAd, MT2_REASSOC_CONF, MLME_STATE_MACHINE_REJECT);
}

VOID InvalidStateWhenDisassociate(
    IN PRT2570ADAPTER pAd, 
    IN MLME_QUEUE_ELEM *Elem) 
{
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - InvalidStateWhenDisassoc(state=%d), reset ASSOC state machine\n", 
        pAd->Mlme.AssocMachine.CurrState);
    pAd->Mlme.AssocMachine.CurrState = ASSOC_IDLE;
    MlmeCntlConfirm(pAd, MT2_DISASSOC_CONF, MLME_STATE_MACHINE_REJECT);
}

/*
    ==========================================================================
    Description:
        right part of IEEE 802.11/1999 page 374
    Note: 
        This event should never cause ASSOC state machine perform state
        transition, and has no relationship with CNTL machine. So we separate
        this routine as a service outside of ASSOC state transition table.
        
	IRQL = DISPATCH_LEVEL

    ==========================================================================
 */
VOID Cls3errAction(
    IN PRT2570ADAPTER pAd, 
    IN PMACADDR      pAddr) 
{
    MACHDR                DisassocHdr;
    CHAR                 *OutBuffer = NULL;
    ULONG                 FrameLen = 0;
    NDIS_STATUS           NStatus;
    USHORT                Reason = REASON_CLS3ERR;

    NStatus = MlmeAllocateMemory(pAd, (PVOID)&OutBuffer);  //Get an unused nonpaged memory
    if (NStatus != NDIS_STATUS_SUCCESS) 
        return;
    
    DBGPRINT(RT_DEBUG_TRACE, "ASSOC - Class 3 Error, Send DISASSOC frame\n");
    MgtMacHeaderInit(pAd, &DisassocHdr, SUBTYPE_DISASSOC, 0, pAddr, &pAd->PortCfg.Bssid);
    MakeOutgoingFrame(OutBuffer,            &FrameLen, 
                      sizeof(MACHDR),       &DisassocHdr, 
                      2,                    &Reason, 
                      END_OF_ARGS);
    MiniportMMRequest(pAd, OutBuffer, FrameLen);

    pAd->PortCfg.DisassocReason = REASON_CLS3ERR;
    COPY_MAC_ADDR(&pAd->PortCfg.DisassocSta, pAddr);
}