author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 09:55:57 +0200 | |
changeset 19 | 1f776524b15c |
parent 0 | 3553901f7fa8 |
child 24 | 6638e7f4bd8f |
child 42 | 3adadc800673 |
permissions | -rw-r--r-- |
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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Implements the adding and removal of tag headers. |
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// |
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// |
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/** |
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@file |
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*/ |
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#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS |
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#include "IPTagHeader.h" |
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#include "Constants.h" |
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/** |
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Default constructor. |
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*/ |
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CIPTagHeader::CIPTagHeader(CBttLogger* aTheLogger) |
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: iTheLogger(aTheLogger) |
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{ |
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iHeaderByte.SetMax(); |
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iHeaderByte.FillZ(); |
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} |
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/** |
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Default destructor. |
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*/ |
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CIPTagHeader::~CIPTagHeader() |
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{ |
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} |
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/** |
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This method will set the type of the IP header. |
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@param aType IP header type |
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*/ |
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void CIPTagHeader::SetType(TUint16 aType) |
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{ |
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_LOG_L1C1(_L8("CIPTagHeader::SetType")); |
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iHeaderByte[0] = (TUint8)(aType>>8); |
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iHeaderByte[1] = (TUint8)(aType&0xff); |
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} |
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/** |
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This method will add a two-byte header to the send buffer detailing the |
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protocol the aDes data packet is encoded with; in this case an IPv4 |
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header tag is appended. |
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@param aDes the send buffer |
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*/ |
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void CIPTagHeader::AddHeader(TDes8& aDes) |
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{ |
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_LOG_L1C1(_L8("CIPTagHeader::AddHeader")); |
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// Add the protocol code as a header to the buffer |
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aDes.Insert(0,iHeaderByte); |
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} |
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/** |
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This method will remove the two-byte header from the received data, |
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which specifies whether it is an IPv4/IPv6 packet. This information |
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will be stored in protocolCode and returned to the caller. |
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@param aPdu The received data packet |
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@return The protocol header tag stripped from aPdu |
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*/ |
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TUint16 CIPTagHeader::RemoveHeader(RMBufChain& aPdu) |
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{ |
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_LOG_L1C1(_L8("CIPTagHeader::RemoveHeader")); |
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if (aPdu.Length() > KIPTagHeaderLength) |
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{ |
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//Strip off the first part of the header |
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aPdu.TrimStart(1); |
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//Read the remaining part of the header as this contains the protocol code |
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TUint8* payloadPtr = aPdu.First()->Ptr(); |
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TUint16 protocolCode = static_cast<TUint16>(*payloadPtr); |
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//Strip off the remaining protocol code part of the header |
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aPdu.TrimStart(1); |
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return protocolCode; |
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} |
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return 0; |
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} |
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#endif // RAWIP_HEADER_APPENDED_TO_PACKETS |