--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/networkprotocols/tcpipv4v6prt/src/loop6.cpp	Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,204 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+// loop6.cpp - loopback interface for IPv6
+//
+
+#include "in_fmly.h"
+#include "loop6.h"
+#include <in6_if.h>	// KSoIf*
+#include "networkinfo.h"
+
+CIfLoop6::CIfLoop6()
+{
+	__DECLARE_NAME(_S("CIfLoop6"));
+}
+
+void CIfLoop6::ConstructL(const TDesC& aTag)
+{
+	iIfaceName = aTag.AllocL();
+	iIfaceMTU = 4096;
+
+	TCallBack scb(SendCallBack, this);
+	iSendCallBack = new(ELeave) CAsyncCallBack(scb, KInet6DefaultPriority);
+
+	TCallBack rcb(RecvCallBack, this);
+	iRecvCallBack = new(ELeave) CAsyncCallBack(rcb, KInet6DefaultPriority);
+}
+
+CIfLoop6::~CIfLoop6()
+{
+	iRecvQ.Free();
+	iSendQ.Free();
+
+	delete iRecvCallBack;
+	delete iSendCallBack;
+	delete iIfaceName;
+}
+
+CIfLoop6* CIfLoop6::NewL(const TDesC& aTag)
+{
+	CIfLoop6* p = new(ELeave) CIfLoop6;
+
+	CleanupStack::PushL(p);
+	p->ConstructL(aTag);
+	CleanupStack::Pop();
+
+	return p;
+}
+
+void CIfLoop6::BindL(TAny* aId)
+{
+	iNetwork = (CProtocolBase*)aId;
+	iNetwork->StartSending((CProtocolBase *)this);
+}
+
+TInt CIfLoop6::State()
+{
+	return EIfUp;
+}
+
+TInt CIfLoop6::Control(TUint aLevel, TUint aName, TDes8& aOption, TAny*)
+	{
+	if (aLevel == KSOLInterface)
+		{
+		switch (aName)
+			{
+			case KSoIfInfo6:
+				{
+				__ASSERT_DEBUG(STATIC_CAST(TUint, aOption.MaxLength()) >= sizeof (TSoIfInfo6), User::Panic(_L("LOOP6"), 0));
+
+				if (STATIC_CAST(TUint, aOption.MaxLength()) < sizeof (TSoIfInfo6))
+					return KErrArgument;
+
+				TSoIfInfo6& opt = *(TSoIfInfo6*)aOption.Ptr();
+				opt.iRMtu = iIfaceMTU;
+				}
+				// FALL THROUGH AS TSoIfInfo6 IS AN EXTENSION OF TSoIfInfo
+
+			case KSoIfInfo:
+				{
+				__ASSERT_DEBUG(STATIC_CAST(TUint, aOption.MaxLength()) >= sizeof (TSoIfInfo), User::Panic(_L("LOOP6"), 0));
+
+				if (STATIC_CAST(TUint, aOption.MaxLength()) < sizeof (TSoIfInfo))
+					return KErrArgument;
+
+				TSoIfInfo& opt = *(TSoIfInfo*)aOption.Ptr();
+	
+				opt.iFeatures = KIfIsLoopback | KIfCanMulticast;
+				opt.iMtu = iIfaceMTU;
+				opt.iSpeedMetric = 30000;
+				opt.iName = *iIfaceName;
+
+				return KErrNone;
+				}
+
+
+			case KSoIfConfig:
+				// PS: If KSoIfConfig returns KErrNotSupported, Update6 does not proceed
+				// with setting routes, etc.
+				{
+				  TSoInet6IfConfig& cfg = *(TSoInet6IfConfig*)aOption.Ptr();	
+				  if (!iIfaceName->Compare(_L("loop6")) && cfg.iFamily == KAfInet6)
+				    {
+				    
+				      TSockAddr unspec(KAFUnspec);
+				      cfg.iLocalId = unspec;
+				      cfg.iRemoteId = unspec;
+				      return KErrNone;
+				    }
+				}
+				break;
+			case KSoIfGetConnectionInfo:
+				{
+				if (STATIC_CAST(TUint, aOption.MaxLength()) < sizeof(TSoIfConnectionInfo))
+					return KErrArgument;
+				TSoIfConnectionInfo &opt = *(TSoIfConnectionInfo *)aOption.Ptr();
+				opt.iIAPId = 0;
+				opt.iNetworkId = 0;
+				return KErrNone;
+				}
+
+			default:
+				break;
+			}
+		}
+	return KErrNotSupported;
+}
+
+void CIfLoop6::Info(TNifIfInfo& aInfo) const
+{
+	aInfo.iVersion = TVersion(KInet6MajorVersionNumber, KInet6MinorVersionNumber, KInet6BuildVersionNumber);
+	aInfo.iFlags = KNifIfIsBase | KNifIfCreatedAlone;
+	aInfo.iName = *iIfaceName;
+	aInfo.iProtocolSupported = KProtocolInet6Ip;
+}
+
+TInt CIfLoop6::Send(RMBufChain &aPacket, TAny*)
+{
+	iSendQ.Append(aPacket);
+	iSendCallBack->CallBack();
+
+	return 1;
+}
+
+TInt CIfLoop6::RecvCallBack(TAny* aCProtocol)
+{
+	((CIfLoop6*)aCProtocol)->DoProcess();
+
+	return 0;
+}
+
+TInt CIfLoop6::SendCallBack(TAny* aCProtocol)
+{
+	((CIfLoop6*)aCProtocol)->DoSend();
+
+	return 0;
+}
+
+void CIfLoop6::DoSend()
+{
+	RMBufPacket send;
+	RMBufPacket recv;
+
+	while (iSendQ.Remove(send))
+	{
+		send.Unpack();
+		Loop(send, recv);
+		iRecvQ.Append(recv);
+		iRecvCallBack->CallBack();
+		send.Free();
+	}
+}
+
+void CIfLoop6::DoProcess()
+{
+	RMBufPacket packet;
+
+	while (iRecvQ.Remove(packet))
+	{
+		iNetwork->Process(packet, (CProtocolBase*)this);
+	}
+}
+			
+void CIfLoop6::Loop(RMBufPacket& aSend, RMBufPacket& aRecv)
+{
+	RMBufPktInfo* info = aSend.Info();
+
+	info->iProtocol = KProtocolInet6Loop;
+
+	aSend.SetInfo(NULL);
+	aRecv.Assign(aSend);
+	aRecv.SetInfo(info);
+	aRecv.Pack();
+}