--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/networkingtestandutils/ipv6to4tunnel/inc/6to4_flow.h	Tue Jan 26 15:23:49 2010 +0200
@@ -0,0 +1,137 @@
+/*
+* 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:
+* Name        : 6to4_flow.h
+* Part of     : 6to4 plugin / 6to4.prt
+* Implements 6to4 automatic and configured tunnels, see
+* RFC 3056 & RFC 2893
+* Version     : 0.2
+*
+*/
+
+
+
+
+/**
+ @internalComponent
+*/
+
+
+#ifndef __6TO4_FLOW_H
+#define __6TO4_FLOW_H
+
+//  INCLUDES
+#include <e32base.h>
+#include <ip6_hook.h>
+
+#include "6to4.h"
+#include "6to4_tunnel.h"
+
+// CONSTANTS
+// MACROS
+// DATA TYPES
+// FUNCTION PROTOTYPES
+// FORWARD DECLARATIONS
+// CLASS DECLARATION
+
+class MNetworkService;
+
+/**
+*  6to4 flow hook
+*  Keeps information on a 6to4 flow.
+*
+*  @lib 
+*  @since 
+*/
+class C6to4FlowInfo : public CBase, public MFlowHook
+	{
+	public:	// Constructors & destructors
+	
+	C6to4FlowInfo(const TPacketHead &aHead);
+	~C6to4FlowInfo();
+
+	public: // New functions
+
+	public: // Functions from base classes
+
+	/**
+	 * From MFlowHook Open and Close implements reference counting system.
+	 * @since
+	 * @param
+	 * @return void
+	 */
+	void Open ();
+
+	/**
+	 * From MFlowHook Informs stack if the hook is ready. Can update address
+	 * information.
+	 * @since
+	 * @param aHead Address information of the flow.
+	 * @return TInt 0 => ready, >0 => pending, <0 => error.
+	 */
+	TInt ReadyL (TPacketHead & aHead);
+
+	/**
+	 * Called by IP when processing outbound packet.
+	 * @since
+	 * @param aPacket Complete packet
+	 * @param aInfo Information block associated with the packet
+	 * @return TInt 0 => processed, <0 => discarded, >0 => restart processing
+	 */
+	TInt ApplyL (RMBufSendPacket & aPacket, RMBufSendInfo & aInfo);
+
+	/**
+	 * From MFlowHook Open and Close implements reference counting system.
+	 * @since
+	 * @param
+	 * @return void
+	 */
+	void Close ();
+
+	private:    // Data
+
+	// Reference count
+	TInt iRefs;
+	
+	// Inner interface index
+	const TUint32 iInterfaceIndex;
+	
+	TInet6HeaderIP iInnerIp;
+	TUint32 iSrcId;	// inner only
+	TUint32 iDstId;	// inner only
+	TInet6HeaderIP iOuterIp;
+
+	TUint16 iSrcPort;
+	TUint16 iDstPort;
+	TUint8 iIcmpType;
+	TUint8 iIcmpCode;
+	TUint8 iProtocol;	
+
+	// Fixed packet content. Hooks may add in their ReadyL some fixed
+	// packet content (extension headers in IPv6) into (TPacketHead::iOffset,
+	// TPacketHead::iPacket). The ReadyL of a tunneling hook *MUST* save
+	// and remove this information from the TPacketHead, because it belongs
+	// under the outer IP header (which the tunneling hook inserts). The
+	// tunneling hook, in addition to adding the outer IP header in ApplyL,
+	// must also copy the fixed packet content, if any is present.
+	TInt iOffset;			// > 0, if there is fixed packet content.
+	RMBufChain iPacket;
+
+	// TODO
+	TUint16 iPacketID;
+	};
+
+#endif      // __6TO4_FLOW_H   
+			
+// End of File