bluetooth/btstack/l2cap/L2CapSDU.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 19 Aug 2010 11:01:00 +0300
branchRCL_3
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parent 0 29b1cd4cb562
permissions -rw-r--r--
Revision: 201031 Kit: 201033
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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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//
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#include <bluetooth/logger.h>
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#include "btsockettimer.h"
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#include "L2CapSDU.h"
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#include "L2CapPDU.h"
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#include "l2util.h"
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#include "L2CapDebugControlInterface.h"
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#ifdef _DEBUG
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#include "L2CapDebugControlInterface.h"
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#endif
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#ifdef __FLOG_ACTIVE
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_LIT8(KLogComponent, LOG_COMPONENT_L2CAP_SDU);
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#endif
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CL2CapSDU* CL2CapSDU::NewLC(RMBufChain& aSDUData,
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                            ML2CapSDUHandler& aParent,
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			                TUint16 aPDUSize,
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                            TBool aIsBasicDataVersion,
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			                TUint16 aTimerDuration)
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	{
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	LOG_STATIC_FUNC
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	CL2CapSDU* self = new(ELeave) CL2CapSDU(aParent);
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	CleanupStack::PushL(self);
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	self->ConstructL(aSDUData, aIsBasicDataVersion, aTimerDuration, aPDUSize);
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	return self;
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	}
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CL2CapSDU* CL2CapSDU::NewL(RMBufChain& aSDUData,
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		                   ML2CapSDUHandler& aParent,
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			               TUint16 aPDUSize,
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		                   TBool aIsBasicDataVersion, 
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			               TUint16 aTimerDuration)
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	{
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	LOG_STATIC_FUNC
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	CL2CapSDU* self = NewLC(aSDUData, aParent, aPDUSize, aIsBasicDataVersion, aTimerDuration);
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	CleanupStack::Pop();
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	return self;
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	}
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CL2CapSDU::CL2CapSDU(ML2CapSDUHandler& aParent)
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 : iParent(aParent),
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   iPDUs(_FOFF(HL2CapPDU, iLink)),
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   iCurrentPDU(iPDUs)
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	{
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	LOG_FUNC
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	L2CAP_DEBUG(ObjectAllocation(L2capDebugInfo::ESDU,
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	                             L2capDebugInfo::EAllocated));
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	}
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void CL2CapSDU::ConstructL(RMBufChain& aSDUData, TBool aIsBasicDataVersion, TUint16 aTimerDuration, TUint16 aPDUSize)
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	{
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	LOG_FUNC
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	LEAVEIFERRORL(SegmentSDUIntoPDUs(aSDUData, aIsBasicDataVersion, aPDUSize));
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	// Start the flush timer if required.
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	StartFlushTimer(aTimerDuration);
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	}
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CL2CapSDU::~CL2CapSDU()
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	{
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	LOG_FUNC
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	iLink.Deque();
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	iCurrentPDU.SetToFirst();
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	HL2CapPDU* pduPtr;
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	while(iCurrentPDU)
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		{
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		pduPtr = iCurrentPDU++;
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		pduPtr->iLink.Deque();
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		delete pduPtr;
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		}
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	if(iFlushTimerRunning)
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		{
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		BTSocketTimer::Remove(iFlushTimerEntry);
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		}	
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	L2CAP_DEBUG(ObjectAllocation(L2capDebugInfo::ESDU,
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	                             L2capDebugInfo::EDeleted));
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	}
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/*
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 * Function to return any additional SDU L2CAP overhead. This is in addition to any PDU
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 * overhead as defined by HL2CapPDU::GetPDUOverhead.
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 */
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/*static*/ TInt CL2CapSDU::GetSDUOverhead(TBool aBasicMode)
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	{
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	LOG_STATIC_FUNC
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	if (aBasicMode)
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		{
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		return HL2CapPDU::KPDUHeaderLength;
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   110
		}
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parents:
diff changeset
   111
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parents:
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   112
	// Non-basic mode overhead
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parents:
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   113
	return HL2CapPDU::KSDULengthFieldLength;
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parents:
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   114
	}
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parents:
diff changeset
   115
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parents:
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   116
TInt CL2CapSDU::SegmentSDUIntoPDUs(RMBufChain& aSDUData, TBool aIsBasicDataVersion, TUint16 aPDUPayloadSize)
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parents:
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   117
	{
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parents:
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   118
	LOG_FUNC
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   119
	TInt sduLength = aSDUData.Length();
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   120
	TInt rerr = KErrNone;
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parents:
diff changeset
   121
		
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parents:
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   122
	if(aIsBasicDataVersion)
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parents:
diff changeset
   123
		{
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parents:
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   124
		// This is basic mode.  The entire SDU should be placed into
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parents:
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   125
		// a B-Frame PDU.
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parents:
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   126
		HBFramePDU* pdu = HBFramePDU::New(aSDUData, aPDUPayloadSize);
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   127
		if(pdu)
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parents:
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   128
			{
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   129
			iPDUs.AddLast(*pdu);
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parents:
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   130
			L2CAP_DEBUG_PDU(PDUTimer(L2capDebugInfo::EBFrameCreated, pdu));
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parents:
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   131
			}
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   132
		else
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parents:
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   133
			{
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   134
			rerr = KErrNoMemory;
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parents:
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   135
			}
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parents:
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   136
		}
29b1cd4cb562 Revision: 200951_001
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parents:
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   137
	else
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parents:
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   138
		{
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parents:
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   139
		// Check if the SDU needs to be segmented.
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parents:
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   140
		if(aPDUPayloadSize >= sduLength)
29b1cd4cb562 Revision: 200951_001
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parents:
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   141
			{
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parents:
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   142
			HIFramePDU* pdu = HIFramePDU::New(aSDUData, EUnsegmentedL2CapSDU);
29b1cd4cb562 Revision: 200951_001
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parents:
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   143
			if(pdu)
29b1cd4cb562 Revision: 200951_001
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parents:
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   144
				{
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parents:
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   145
				iPDUs.AddLast(*pdu);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   146
				L2CAP_DEBUG_PDU(PDUTimer(L2capDebugInfo::EUnsegmentedFrameCreated, pdu));
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parents:
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   147
				}
29b1cd4cb562 Revision: 200951_001
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parents:
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   148
			else
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   149
				{
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parents:
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   150
				rerr = KErrNoMemory;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   151
				}				
29b1cd4cb562 Revision: 200951_001
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parents:
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   152
			}
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   153
		else
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   154
			{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   155
			// Work backwards through the SDU segmenting it into PDU's. The first segment will always
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   156
			// contain an extra SDU length field so this is taken into account when working out the 
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   157
			// size of the last segment below.
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   158
			TInt sduPosition = sduLength - ((sduLength + HL2CapPDU::KSDULengthFieldLength) % aPDUPayloadSize);
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   159
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   160
			// If the PDU size is a factor of the SDU length then start from the
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   161
			// SDU length - PDU size.
29b1cd4cb562 Revision: 200951_001
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parents:
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   162
			if(sduPosition == sduLength)
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   163
				{
29b1cd4cb562 Revision: 200951_001
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parents:
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   164
				sduPosition -= aPDUPayloadSize;
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   165
				}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   166
												
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   167
			HIFramePDU* pdu = NULL;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   168
			RMBufChain pduData;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   169
			
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parents:
diff changeset
   170
			TRAP(rerr, aSDUData.SplitL(sduPosition, pduData));
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   171
			if(rerr == KErrNone)
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   172
				{
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   173
				pdu = HIFramePDU::New(pduData, EEndOfL2CapSDU);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   174
				if(pdu)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   175
					{
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parents:
diff changeset
   176
					sduPosition -= aPDUPayloadSize;
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   177
					iPDUs.AddFirst(*pdu);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   178
					L2CAP_DEBUG_PDU(PDUTimer(L2capDebugInfo::EIFrameCreated, pdu));
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   179
					
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   180
					while(sduPosition > 0)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   181
						{
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   182
						__ASSERT_DEBUG(sduPosition >= 0, Panic(EL2CAPSDUPositionNegativeDuringSegmentation));
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   183
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   184
						TRAP(rerr, aSDUData.SplitL(sduPosition, pduData));
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   185
						if(rerr == KErrNone)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   186
							{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   187
							pdu = HIFramePDU::New(pduData, EContinuationOfL2CapSDU);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   188
							if(pdu)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   189
								{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   190
								sduPosition -= aPDUPayloadSize;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   191
								iPDUs.AddFirst(*pdu);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   192
								}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   193
							else
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   194
								{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   195
								rerr = KErrNoMemory;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   196
								break;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   197
								}
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   198
							}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   199
						else
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   200
							{
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   201
							break;
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   202
							}							
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   203
						}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   204
					
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
					if(rerr == KErrNone)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   206
						{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   207
						// Create and add the first PDU.
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   208
						pdu = HIFramePDU::New(aSDUData, EStartOfL2CapSDU);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   209
						if(pdu)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   210
							{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   211
							pdu->SetSDUSize(static_cast<TUint16>(sduLength));
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   212
							iPDUs.AddFirst(*pdu);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   213
							}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   214
						else
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   215
							{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   216
							rerr = KErrNoMemory;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   217
							}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   218
						}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   219
					}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   220
				else
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					{
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					rerr = KErrNoMemory;
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					}				
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				}
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			}
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		}
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	if(rerr == KErrNone)
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		{
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		// Set the current PDU pointer to the first PDU.
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		iCurrentPDU.SetToFirst();	
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		}
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	return rerr;
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	}
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TBool CL2CapSDU::GetPDU(HL2CapPDU*& aReturnedPDU)
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	{
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	LOG_FUNC
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	TBool isLastPDU = EFalse;
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	if(!iPDUs.IsEmpty())
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		{
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		aReturnedPDU = iCurrentPDU++;
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		// TODO: this was put in as a fix and is in needed in general, but it also
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		// actually hoses up some logic, i.e. CurrentPDUIsFirstPDU will always return
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		// true. We either need a separate link for the list of PDUs inside the SDU,
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		// or if possible just get rid of iCurrentPDU and have a iFirstPDU flag
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		// set to one during initial segmentation.
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		// Note - we the iCurrentPDU/iFirstPDU business is actually only used in two cases:
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		// 1. to repack current SDU when PDU size has changed on a live connection - currently
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		//    unused and unnecessary.
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		// 2. on flush timer expiry, to mark already sent packets as flushed and purge the
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		//    unsent ones - currently unused, but may get implemented in the future. However
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		//    the marking of the packets may be done their current owner, which is a data
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		//    controller or the muxer, so again this is unnecessary.
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		// Conclusion: refactor to simplify.
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		aReturnedPDU->iLink.Deque();
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		if(iCurrentPDU == NULL)
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			{
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			// At the end of the PDU list.
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			L2CAP_DEBUG_PDU(PDUTimer(L2capDebugInfo::EGetPDUCalled, aReturnedPDU));
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			isLastPDU = ETrue;
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			}
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		}
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	return isLastPDU;
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	}
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/*static*/ TInt CL2CapSDU::FlushTimerExpired(TAny* aL2CapSDU)
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	{
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	LOG_STATIC_FUNC
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	CL2CapSDU* sdu = reinterpret_cast<CL2CapSDU*>(aL2CapSDU);
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	sdu->HandleFlushTimerExpired();
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	return EFalse;
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	}
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void CL2CapSDU::HandleFlushTimerExpired()
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	{
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	LOG_FUNC
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	// Note that the timer is no longer running.
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	iFlushTimerRunning = EFalse;
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	// Any PDU's that have already been sent need to be
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	// informed of the flush.
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	TDblQueIter<HL2CapPDU> pduIter(iPDUs);
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	TBool done = EFalse;
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	HL2CapPDU* pduPtr;
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	while((pduPtr = pduIter++) != NULL  && !done)
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		{
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		if(pduPtr == iCurrentPDU)
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			{
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			done = ETrue;
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			}
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		else
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			{
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			pduPtr->SetPDUFlushed();
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			}
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		}
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   302
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	// The remaining PDU's (if any) that have not yet
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	// been sent can be deleted. 
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	while((pduPtr = iCurrentPDU++) != NULL)
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		{
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		pduPtr->iLink.Deque();
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		delete pduPtr;
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   309
		}
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   310
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	// Inform the SDU queue.
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	iParent.ProcessFlushTimerExpiry(*this);
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   313
	}
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parents:
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   314
	
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TBool CL2CapSDU::IsSDUEmpty() const
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	{
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	LOG_FUNC
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	return iPDUs.IsEmpty();
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	}
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   320
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parents:
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   321
	
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TBool CL2CapSDU::CurrentPDUIsFirstPDU()
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	{
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	LOG_FUNC
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	return iPDUs.IsFirst(iCurrentPDU);
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	}
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void CL2CapSDU::StartFlushTimer(TUint16 aTimerDuration)
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	{
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	LOG_FUNC
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   331
	__ASSERT_DEBUG(!iFlushTimerRunning, Panic(EL2CAPAttemptToRestartFlushTimer));
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parents:
diff changeset
   332
	
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   333
	// Only start the timer if the duration is valid.
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parents:
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   334
	if(aTimerDuration >= TL2CapConfig::EMinDataObsolescenceTimeout && 
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   335
	   aTimerDuration != KInfiniteFlush)
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parents:
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   336
		{
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parents:
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   337
		TCallBack cb(FlushTimerExpired, this);
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parents:
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   338
		iFlushTimerEntry.Set(cb);
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parents:
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   339
		// Timer period is a factor of the duration parameter and 0.625ms
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parents:
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   340
		BTSocketTimer::Queue(aTimerDuration*625, iFlushTimerEntry);
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parents:
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   341
		iFlushTimerRunning = ETrue;
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parents:
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   342
		}
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   343
	}
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   344
	
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   345
TInt CL2CapSDU::ChangeSDUSegmentation(TBool aIsBasicDataVersion, TUint16 aPDUSize)
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parents:
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   346
	{
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   347
	LOG_FUNC
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   348
	__ASSERT_DEBUG(CurrentPDUIsFirstPDU(), Panic(EL2CAPAttemptToChangeSegmentationForPartiallySentSDU));
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parents:
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   349
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   350
	TInt rerr = KErrNone;
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   351
	RMBufChain sduData;
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parents:
diff changeset
   352
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   353
	// Get the current SDU data, and delete all current
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parents:
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   354
	// PDU's
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parents:
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   355
	TDblQueIter<HL2CapPDU> iter(iPDUs);
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   356
	HL2CapPDU* pduPtr;
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parents:
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   357
	while((pduPtr = iter++) != NULL)
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parents:
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   358
		{
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parents:
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   359
		pduPtr->AppendPayloadToBuffer(sduData);
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parents:
diff changeset
   360
		pduPtr->iLink.Deque();
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parents:
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   361
		delete pduPtr;
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parents:
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   362
		}
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parents:
diff changeset
   363
		
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parents:
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   364
	rerr = SegmentSDUIntoPDUs(sduData, aIsBasicDataVersion, aPDUSize);
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parents:
diff changeset
   365
	
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   366
	return rerr;
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parents:
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   367
	}
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parents:
diff changeset
   368
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parents:
diff changeset
   369
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parents:
diff changeset
   370
#ifdef _DEBUG
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parents:
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   371
TInt CL2CapSDU::DebugManualFlush()
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parents:
diff changeset
   372
	{
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parents:
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   373
	LOG_FUNC
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parents:
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   374
	TInt rcode = -1;
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parents:
diff changeset
   375
	
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parents:
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   376
	if(!IsSDUEmpty())
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parents:
diff changeset
   377
		{
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parents:
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   378
		RMBuf* buf = iPDUs.First()->PDUBuffer().First();
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parents:
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   379
		if(buf->Length() > 8)
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parents:
diff changeset
   380
			{
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parents:
diff changeset
   381
			rcode = buf->Get(8);
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parents:
diff changeset
   382
			}
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parents:
diff changeset
   383
		else
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parents:
diff changeset
   384
			{
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parents:
diff changeset
   385
			buf = buf->Next();
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parents:
diff changeset
   386
			if(buf)
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parents:
diff changeset
   387
				{
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parents:
diff changeset
   388
				rcode = buf->Get(0);
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parents:
diff changeset
   389
				}
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   390
			}
29b1cd4cb562 Revision: 200951_001
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parents:
diff changeset
   391
		}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
		
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
	if(iFlushTimerRunning)
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
		{
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
		BTSocketTimer::Remove(iFlushTimerEntry);
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
		}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
	HandleFlushTimerExpired();
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
	return rcode;
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
	}
29b1cd4cb562 Revision: 200951_001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
#endif