diff -r d3e8e7d462dd -r f92a4f87e424 usbmgmt/usbmgr/device/classdrivers/ncm/classimplementation/ncmpktdrv/pktdrv/inc/ncmcomminterfacesenderandreceiver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/device/classdrivers/ncm/classimplementation/ncmpktdrv/pktdrv/inc/ncmcomminterfacesenderandreceiver.h	Tue Aug 31 17:01:47 2010 +0300
@@ -0,0 +1,112 @@
+/*
+* Copyright (c) 2010 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:
+* header file of class for read and write data from share chunk LDD 
+*
+*/
+
+
+/**
+@file
+@internalComponent
+*/
+
+#ifndef NCMCOMMINTERFACESENDERANDRECEIVER_H
+#define NCMCOMMINTERFACESENDERANDRECEIVER_H
+
+#include <e32base.h>
+
+#ifndef __OVER_DUMMYUSBSCLDD__
+#include <d32usbcsc.h>
+#else
+#include <dummyusbsclddapi.h>
+#endif
+
+
+
+class CNcmCommunicationInterface;
+
+/**
+Responsible for sending and receiving data on Control Endpoint
+*/
+
+NONSHARABLE_CLASS(CNcmCommInterfaceSenderAndReceiver) : public CActive
+    {
+public:
+    static CNcmCommInterfaceSenderAndReceiver* NewL(RDevUsbcScClient& aPort, CNcmCommunicationInterface& aCommInterface);
+    ~CNcmCommInterfaceSenderAndReceiver();
+    void Start();
+    void Stop();
+    /**
+    * read aLength data from LDD
+    *
+    * @param aStatus complete status for this request.
+    * @param aBuf buffer to store data.    
+    * @param aLength length to read.    
+    */
+    TInt Read(TRequestStatus& aStatus, TDes8& aBuf, TInt aLength);
+    /**
+    * write aLength data to LDD
+    *
+    * @param aStatus complete status for this request.
+    * @param aBuf buffer of data.    
+    * @param aLength length to write.    
+    */
+    TInt Write(TRequestStatus& aStatus, TDesC8& aBuf, TInt aLength);
+    
+private:
+    enum TNcmControlEndpointState
+        {
+        EUnInit = 1,
+        EIdle,
+        EReceiving,
+        ESending        
+        };
+    
+    CNcmCommInterfaceSenderAndReceiver(RDevUsbcScClient& aPort, CNcmCommunicationInterface& aCommInterface);
+    void ReadData();
+
+private:
+    /**
+    *  derived from CActive
+    */
+    void RunL();
+    void DoCancel();
+    
+private:
+    RDevUsbcScClient&               iPort;
+    /**
+    *  LDD control endpoint buffer
+    */
+    TEndpointBuffer                 iEp0Buffer;
+    CNcmCommunicationInterface&     iCommInterface;
+    /**
+    *  point to buffer to store data of Read function, this is not ownership
+    */
+    TDes8*                          iReceiveBuf;
+    /**
+    *  length of data left to be read from LDD for a Read request
+    */
+    TInt                            iToReceiveLength;
+    /**
+    *  complete status for Read and Write function, this is not ownership
+    */
+    TRequestStatus*                 iCompleteStatus;
+    TNcmControlEndpointState        iState;
+
+    };
+
+
+#endif //NCMCOMMINTERFACESENDERANDRECEIVER_H
+