author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 02:03:13 +0200 | |
changeset 0 | c40eb8fe8501 |
child 3 | 6524e815f76f |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2002-2009 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 the License "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: Implementation of the DEthernetFrameMemMngr class. |
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* |
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*/ |
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|
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/* |
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* %version: 23 % |
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*/ |
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#include "WlLddWlanLddConfig.h" |
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#include "DataFrameMemMngr.h" |
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#include "MgmtFrameMemMngr.h" |
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#include "osachunk.h" |
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#include <kernel.h> |
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#include <kern_priv.h> |
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#include "EtherCardApi.h" |
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extern void os_free( const TAny* ); |
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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DEthernetFrameMemMngr* DEthernetFrameMemMngr::Init( |
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TInt aUnit, |
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DWlanLogicalChannel& aParent, |
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WlanChunk*& aRxFrameMemoryPool, |
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TBool aUseCachedMemory, |
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TInt aFrameBufAllocationUnit ) |
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{ |
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DEthernetFrameMemMngr* ret = NULL; |
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|
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if ( aUnit == KUnitEthernet ) |
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{ |
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ret = new DataFrameMemMngr( |
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aParent, |
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aRxFrameMemoryPool, |
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aFrameBufAllocationUnit ); |
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} |
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else if ( aUnit == KUnitWlan ) |
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{ |
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ret = new MgmtFrameMemMngr( |
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aParent, |
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aRxFrameMemoryPool, |
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aUseCachedMemory, |
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aFrameBufAllocationUnit ); |
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} |
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else |
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{ |
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TraceDump(ERROR_LEVEL, |
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(("WLANLDD: DEthernetFrameMemMngr::Init: ERROR: unknown unit: %d"), |
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aUnit)); |
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// No action. NULL is returned |
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} |
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if ( ret ) |
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{ |
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TraceDump(MEMORY, (("WLANLDD: new FrameMemMngr: 0x%08x"), |
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reinterpret_cast<TUint32>(ret))); |
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} |
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return ret; |
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} |
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|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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TInt DEthernetFrameMemMngr::OnInitialiseMemory( |
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DThread& aThread, |
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TSharedChunkInfo* aSharedChunkInfo, |
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TUint aVendorTxHdrLen, |
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TUint aVendorTxTrailerLen ) |
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{ |
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TraceDump( INIT_LEVEL, |
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(("WLANLDD: DEthernetFrameMemMngr::OnInitialiseMemory: aVendorTxHdrLen: %d"), |
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aVendorTxHdrLen ) ); |
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TraceDump( INIT_LEVEL, |
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(("WLANLDD: aVendorTxTrailerLen: %d"), |
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aVendorTxTrailerLen ) ); |
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TInt ret( KErrGeneral ); |
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|
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iVendorTxHdrLen = aVendorTxHdrLen; |
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iVendorTxTrailerLen = aVendorTxTrailerLen; |
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// Local info structure we will fill in |
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TSharedChunkInfo info; |
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|
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if( !IsMemInUse() ) |
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{ |
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ret = DoAllocate( iParent.SharedMemoryChunk() ); |
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106 |
|
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if ( ret == KErrNone ) |
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{ |
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ret = DoOpenHandle( aThread, info, iParent.SharedMemoryChunk() ); |
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110 |
|
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if ( ret == KErrNone ) |
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{ |
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MarkMemInUSe(); // mark as in use |
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ret = KErrNone; |
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} |
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else |
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{ |
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// handle creation & open failed |
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119 |
|
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TraceDump( INIT_LEVEL, |
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(("WLANLDD: DEthernetFrameMemMngr::OnInitialiseMemory: Handle create & open error: status: %d"), |
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ret ) ); |
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123 |
|
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// zero contents of info structure. |
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// (Zero is usually a safe value to return on error for most data types, |
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// and for object handles this is same as KNullHandle) |
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memclr( &info, sizeof( info ) ); |
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128 |
|
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// need to enter critical section for chunk closing |
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NKern::ThreadEnterCS(); |
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131 |
|
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// schedule the shared memory chunk for destruction |
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Kern::ChunkClose( iParent.SharedMemoryChunk() ); |
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134 |
|
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// leave critical section |
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NKern::ThreadLeaveCS(); |
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} |
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138 |
|
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// write handle info to client memory |
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ret = Kern::ThreadRawWrite( |
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&aThread, |
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aSharedChunkInfo, |
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&info, |
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sizeof( info ) ); |
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if ( ret != KErrNone ) |
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146 |
{ |
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TraceDump(ERROR_LEVEL, ("WLANLDD: ThreadRawWrite panic")); |
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TraceDump(ERROR_LEVEL, (("WLANLDD: ret: %d"), ret)); |
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os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
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} |
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} |
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else |
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153 |
{ |
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// allocation failed; error code will be returned |
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} |
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} |
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else |
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158 |
{ |
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ret = KErrAlreadyExists; |
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} |
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161 |
|
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return ret; |
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} |
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164 |
|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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DEthernetFrameMemMngr::~DEthernetFrameMemMngr() |
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{ |
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OnReleaseMemory(); |
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172 |
|
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iFrameXferBlock = NULL; |
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iTxDataBuffer = NULL; |
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iRxDataChunk = NULL; |
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} |
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177 |
|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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181 |
// |
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void DEthernetFrameMemMngr::OnReleaseMemory() |
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{ |
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MarkMemFree(); // mark as free |
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} |
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186 |
|
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// --------------------------------------------------------------------------- |
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// |
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189 |
// --------------------------------------------------------------------------- |
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// |
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TDataBuffer* DEthernetFrameMemMngr::OnWriteEthernetFrame() const |
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{ |
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if ( iTxDataBuffer->GetLength() >= sizeof( SEthernetHeader ) ) |
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194 |
{ |
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return iTxDataBuffer; |
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} |
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197 |
else |
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198 |
{ |
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os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
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return NULL; |
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} |
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} |
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203 |
|
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// --------------------------------------------------------------------------- |
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205 |
// |
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// --------------------------------------------------------------------------- |
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207 |
// |
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TBool DEthernetFrameMemMngr::OnReadRequest() |
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{ |
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TBool ret( EFalse ); |
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211 |
|
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if ( IsMemInUse() ) |
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{ |
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if ( iCountCompleted ) |
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{ |
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// free relevant buffers |
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DoFreeRxBuffers(); |
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iCountCompleted = 0; // no buffers anymore in process in user mode |
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|
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// make sure that the same buffers are not tried to be |
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// freed again thru the incremental freeing method |
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iFrameXferBlock->KeAllUserSideRxBuffersFreed(); |
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} |
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|
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if ( iCountTobeCompleted ) |
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{ |
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// there are Rx buffers to be completed |
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228 |
|
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iFrameXferBlock->KeRxComplete( DoGetTobeCompletedBuffersStart(), |
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iCountTobeCompleted ); |
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// mark the completed buffers |
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assign( DoGetTobeCompletedBuffersStart(), |
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DoGetCompletedBuffersStart(), |
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iCountTobeCompleted ); |
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iCountCompleted = iCountTobeCompleted; |
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iCountTobeCompleted = 0; |
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237 |
|
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ret = ETrue; |
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// the frame Rx request won't be pending as the callee shall |
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// complete it |
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iReadStatus = ENotPending; |
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} |
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else |
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244 |
{ |
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// there are no Rx buffers to be completed. The Rx request is |
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// left pending |
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iReadStatus = EPending; |
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} |
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} |
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else |
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{ |
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os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
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} |
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254 |
|
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return ret; |
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} |
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257 |
|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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void DEthernetFrameMemMngr::DoMarkRxBufFree( TUint8* /*aBufferToFree*/ ) |
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{ |
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// not supported in default handler |
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os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
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} |
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267 |
|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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void DEthernetFrameMemMngr::SetTxOffsets( |
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TUint32 aEthernetFrameTxOffset, |
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TUint32 aDot11FrameTxOffset, |
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TUint32 aSnapFrameTxOffset ) |
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{ |
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if ( IsMemInUse() ) |
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{ |
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iFrameXferBlock->KeSetTxOffsets( |
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aEthernetFrameTxOffset, |
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aDot11FrameTxOffset, |
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aSnapFrameTxOffset ); |
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} |
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} |
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285 |
|
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// --------------------------------------------------------------------------- |
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287 |
// |
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// --------------------------------------------------------------------------- |
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289 |
// |
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TUint8* DEthernetFrameMemMngr::OnGetEthernetFrameRxBuffer( |
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TUint aLengthinBytes ) |
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{ |
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TUint8* buffer ( NULL ); |
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|
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if ( IsMemInUse() ) |
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{ |
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buffer = DoGetNextFreeRxBuffer( aLengthinBytes ); |
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} |
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299 |
else |
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300 |
{ |
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// we are trying to acquire an Rx buffer but our user mode client |
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// has not asked for the memorybuffer pool to be initialized. In this |
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// case NULL is returned, as no buffers are available |
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TraceDump(RX_FRAME, |
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("WLANLDD: DEthernetFrameMemMngr::OnGetEthernetFrameRxBuffer: not initialized => failed")); |
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} |
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307 |
|
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return buffer; |
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} |
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310 |
|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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314 |
// |
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TDataBuffer* DEthernetFrameMemMngr::GetRxFrameMetaHeader() |
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316 |
{ |
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TDataBuffer* buffer ( NULL ); |
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|
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if ( IsMemInUse() ) |
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{ |
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buffer = reinterpret_cast<TDataBuffer*>( |
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iRxFrameMemoryPool->Alloc( sizeof( TDataBuffer ), ETrue ) ); |
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323 |
|
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TraceDump(RX_FRAME, |
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(("WLANLDD: DEthernetFrameMemMngr::GetRxFrameMetaHeader: addr: 0x%08x"), |
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326 |
reinterpret_cast<TUint32>(buffer)) ); |
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327 |
} |
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328 |
else |
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329 |
{ |
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330 |
// we are trying to acquire memory for Rx frame meta header but our |
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331 |
// user mode client has not asked for the memorybuffer pool to be |
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332 |
// initialized. In this case NULL is returned, as no memory is |
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// available |
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334 |
TraceDump(RX_FRAME, |
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335 |
("WLANLDD: DEthernetFrameMemMngr::GetRxFrameMetaHeader: not initialized => failed")); |
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336 |
} |
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337 |
|
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338 |
return buffer; |
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339 |
} |
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340 |
|
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341 |
// --------------------------------------------------------------------------- |
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342 |
// |
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343 |
// --------------------------------------------------------------------------- |
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344 |
// |
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345 |
void DEthernetFrameMemMngr::FreeRxFrameMetaHeader( TDataBuffer* aMetaHeader ) |
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346 |
{ |
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347 |
if ( IsMemInUse() ) |
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348 |
{ |
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iRxFrameMemoryPool->Free( aMetaHeader ); |
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350 |
} |
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351 |
else |
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352 |
{ |
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353 |
// the whole Rx memory pool - including aMetaHeader - has already |
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354 |
// been deallocated, so nothing is done in this case |
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355 |
TraceDump( RX_FRAME, |
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|
356 |
("WLANLDD: MgmtFrameMemMngr::FreeRxFrameMetaHeader: Rx memory pool already deallocated; no action needed") ); |
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357 |
} |
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358 |
} |
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|
359 |
|
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360 |
// --------------------------------------------------------------------------- |
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361 |
// |
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362 |
// --------------------------------------------------------------------------- |
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363 |
// |
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364 |
TBool DEthernetFrameMemMngr::OnEthernetFrameRxComplete( |
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365 |
const TDataBuffer*& aBufferStart, |
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366 |
TUint32 aNumOfBuffers ) |
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367 |
{ |
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368 |
TBool ret( EFalse ); |
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369 |
|
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370 |
if ( IsMemInUse() && |
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371 |
DoEthernetFrameRxComplete( aBufferStart, aNumOfBuffers ) ) |
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372 |
{ |
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373 |
iReadStatus = ENotPending; |
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ret = ETrue; |
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375 |
} |
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376 |
|
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377 |
return ret; |
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378 |
} |
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|
379 |
|
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380 |
// --------------------------------------------------------------------------- |
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381 |
// this default implementation always returns KErrNone |
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382 |
// --------------------------------------------------------------------------- |
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383 |
// |
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|
384 |
TInt DEthernetFrameMemMngr::DoAllocate( DChunk*& /*aSharedMemoryChunk*/ ) |
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|
385 |
{ |
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|
386 |
TraceDump( INIT_LEVEL, |
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|
387 |
("WLANLDD: DEthernetFrameMemMngr::DoAllocate") ); |
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|
388 |
|
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|
389 |
return KErrNone; |
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|
390 |
} |
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|
391 |
|
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|
392 |
// --------------------------------------------------------------------------- |
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|
393 |
// this default implementation always returns NULL |
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|
394 |
// --------------------------------------------------------------------------- |
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|
395 |
// |
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|
396 |
TUint8* DEthernetFrameMemMngr::DoGetNextFreeRxBuffer( |
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|
397 |
TUint /*aLengthinBytes*/ ) |
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|
398 |
{ |
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|
399 |
TraceDump( RX_FRAME, |
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|
400 |
("WLANLDD: DEthernetFrameMemMngr::DoGetNextFreeRxBuffer") ); |
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|
401 |
|
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|
402 |
return NULL; |
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|
403 |
} |
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|
404 |
|
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|
405 |
// --------------------------------------------------------------------------- |
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|
406 |
// This default implementation always returns NULL |
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|
407 |
// --------------------------------------------------------------------------- |
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|
408 |
// |
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|
409 |
TDataBuffer* DEthernetFrameMemMngr::AllocTxBuffer( TUint aLength ) |
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|
410 |
{ |
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|
411 |
return NULL; |
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|
412 |
} |
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|
413 |
|
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Revision: 201003
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|
414 |
// --------------------------------------------------------------------------- |
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|
415 |
// |
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|
416 |
// --------------------------------------------------------------------------- |
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|
417 |
// |
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|
418 |
TBool DEthernetFrameMemMngr::AddTxFrame( |
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|
419 |
TDataBuffer* aPacketInUserSpace, |
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|
420 |
TDataBuffer*& aPacketInKernSpace, |
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|
421 |
TBool aUserDataTxEnabled ) |
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|
422 |
{ |
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|
423 |
return (static_cast<RFrameXferBlockProtocolStack*>( |
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|
424 |
iFrameXferBlock))->AddTxFrame( |
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|
425 |
aPacketInUserSpace, |
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|
426 |
aPacketInKernSpace, |
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|
427 |
aUserDataTxEnabled ); |
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Revision: 201003
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diff
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|
428 |
} |
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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TDataBuffer* DEthernetFrameMemMngr::GetTxFrame( |
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const TWhaTxQueueState& aTxQueueState, |
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TBool& aMore ) |
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{ |
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if ( IsMemInUse() ) |
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{ |
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return (static_cast<RFrameXferBlockProtocolStack*>( |
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iFrameXferBlock))->GetTxFrame( aTxQueueState, aMore ); |
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} |
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else |
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return NULL; |
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} |
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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void DEthernetFrameMemMngr::FreeTxPacket( TDataBuffer*& /*aPacket*/ ) |
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{ |
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// not suported in this default implementation |
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os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
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} |
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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TBool DEthernetFrameMemMngr::ResumeClientTx( TBool aUserDataTxEnabled ) const |
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{ |
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return (static_cast<RFrameXferBlockProtocolStack*>( |
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iFrameXferBlock))->ResumeClientTx( aUserDataTxEnabled ); |
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} |
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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TBool DEthernetFrameMemMngr::AllTxQueuesEmpty() const |
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{ |
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return (static_cast<RFrameXferBlockProtocolStack*>( |
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iFrameXferBlock))->AllTxQueuesEmpty(); |
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} |