author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:41:05 +0100 | |
branch | RCL_3 |
changeset 18 | d3d7683d16f5 |
parent 17 | a828660c511c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002-2010 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: 24 % |
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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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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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|
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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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|
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if ( ret == KErrNone ) |
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108 |
{ |
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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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117 |
{ |
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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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152 |
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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{ |
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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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{ |
3
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MarkMemFree(); |
0
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|
18 | 173 |
iFrameXferBlock = NULL; |
174 |
iTxDataBuffer = NULL; |
|
0
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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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// |
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TDataBuffer* DEthernetFrameMemMngr::OnWriteEthernetFrame() const |
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183 |
{ |
18 | 184 |
if ( iTxDataBuffer->GetLength() >= sizeof( SEthernetHeader ) ) |
185 |
{ |
|
186 |
return iTxDataBuffer; |
|
187 |
} |
|
188 |
else |
|
189 |
{ |
|
190 |
os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
|
191 |
return NULL; |
|
192 |
} |
|
193 |
} |
|
194 |
||
195 |
// --------------------------------------------------------------------------- |
|
196 |
// |
|
197 |
// --------------------------------------------------------------------------- |
|
198 |
// |
|
199 |
TBool DEthernetFrameMemMngr::OnReadRequest() |
|
200 |
{ |
|
201 |
TBool ret( EFalse ); |
|
202 |
||
203 |
if ( IsMemInUse() ) |
|
204 |
{ |
|
205 |
if ( iCountCompleted ) |
|
206 |
{ |
|
207 |
// free relevant buffers |
|
208 |
DoFreeRxBuffers(); |
|
209 |
iCountCompleted = 0; // no buffers anymore in process in user mode |
|
210 |
||
211 |
// make sure that the same buffers are not tried to be |
|
212 |
// freed again thru the incremental freeing method |
|
213 |
iFrameXferBlock->KeAllUserSideRxBuffersFreed(); |
|
214 |
} |
|
215 |
||
216 |
if ( iCountTobeCompleted ) |
|
217 |
{ |
|
218 |
// there are Rx buffers to be completed |
|
219 |
||
220 |
iFrameXferBlock->KeRxComplete( DoGetTobeCompletedBuffersStart(), |
|
221 |
iCountTobeCompleted ); |
|
222 |
// mark the completed buffers |
|
223 |
assign( DoGetTobeCompletedBuffersStart(), |
|
224 |
DoGetCompletedBuffersStart(), |
|
225 |
iCountTobeCompleted ); |
|
226 |
iCountCompleted = iCountTobeCompleted; |
|
227 |
iCountTobeCompleted = 0; |
|
228 |
||
229 |
ret = ETrue; |
|
230 |
// the frame Rx request won't be pending as the callee shall |
|
231 |
// complete it |
|
232 |
iReadStatus = ENotPending; |
|
233 |
} |
|
234 |
else |
|
235 |
{ |
|
236 |
// there are no Rx buffers to be completed. The Rx request is |
|
237 |
// left pending |
|
238 |
iReadStatus = EPending; |
|
239 |
} |
|
240 |
} |
|
241 |
else |
|
242 |
{ |
|
243 |
os_assert( (TUint8*)("WLANLDD: panic"), (TUint8*)(WLAN_FILE), __LINE__ ); |
|
244 |
} |
|
245 |
||
246 |
return ret; |
|
247 |
} |
|
248 |
||
249 |
// --------------------------------------------------------------------------- |
|
250 |
// |
|
251 |
// --------------------------------------------------------------------------- |
|
252 |
// |
|
253 |
void DEthernetFrameMemMngr::DoMarkRxBufFree( TUint8* /*aBufferToFree*/ ) |
|
254 |
{ |
|
0
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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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257 |
} |
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258 |
|
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259 |
// --------------------------------------------------------------------------- |
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260 |
// |
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261 |
// --------------------------------------------------------------------------- |
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262 |
// |
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263 |
void DEthernetFrameMemMngr::SetTxOffsets( |
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264 |
TUint32 aEthernetFrameTxOffset, |
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265 |
TUint32 aDot11FrameTxOffset, |
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266 |
TUint32 aSnapFrameTxOffset ) |
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{ |
18 | 268 |
if ( IsMemInUse() ) |
0
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{ |
18 | 270 |
iFrameXferBlock->KeSetTxOffsets( |
0
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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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|
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// --------------------------------------------------------------------------- |
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// |
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// --------------------------------------------------------------------------- |
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// |
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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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else |
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{ |
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// we are trying to acquire an Rx buffer but our user mode client |
18 | 293 |
// has not asked for the memorybuffer pool to be initialized. In this |
0
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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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|
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return buffer; |
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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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TDataBuffer* DEthernetFrameMemMngr::GetRxFrameMetaHeader() |
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{ |
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TDataBuffer* buffer ( NULL ); |
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|
18 | 310 |
if ( IsMemInUse() ) |
0
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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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|
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TraceDump(RX_FRAME, |
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(("WLANLDD: DEthernetFrameMemMngr::GetRxFrameMetaHeader: addr: 0x%08x"), |
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reinterpret_cast<TUint32>(buffer)) ); |
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} |
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else |
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{ |
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// we are trying to acquire memory for Rx frame meta header but our |
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// user mode client has not asked for the memorybuffer pool to be |
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// initialized. In this case NULL is returned, as no memory is |
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// available |
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TraceDump(RX_FRAME, |
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("WLANLDD: DEthernetFrameMemMngr::GetRxFrameMetaHeader: not initialized => failed")); |
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} |
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|
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return buffer; |
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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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void DEthernetFrameMemMngr::FreeRxFrameMetaHeader( TDataBuffer* aMetaHeader ) |
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{ |
18 | 338 |
if ( IsMemInUse() ) |
0
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{ |
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iRxFrameMemoryPool->Free( aMetaHeader ); |
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} |
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else |
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{ |
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// the whole Rx memory pool - including aMetaHeader - has already |
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// been deallocated, so nothing is done in this case |
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346 |
TraceDump( RX_FRAME, |
18 | 347 |
("WLANLDD: MgmtFrameMemMngr::FreeRxFrameMetaHeader: Rx memory pool already deallocated; no action needed") ); |
0
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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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354 |
// |
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TBool DEthernetFrameMemMngr::OnEthernetFrameRxComplete( |
18 | 356 |
const TDataBuffer*& aBufferStart, |
0
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TUint32 aNumOfBuffers ) |
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{ |
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TBool ret( EFalse ); |
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|
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if ( IsMemInUse() && |
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DoEthernetFrameRxComplete( aBufferStart, aNumOfBuffers ) ) |
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{ |
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iReadStatus = ENotPending; |
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ret = ETrue; |
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} |
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|
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return ret; |
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} |
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370 |
|
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371 |
// --------------------------------------------------------------------------- |
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372 |
// this default implementation always returns KErrNone |
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// --------------------------------------------------------------------------- |
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// |
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375 |
TInt DEthernetFrameMemMngr::DoAllocate( DChunk*& /*aSharedMemoryChunk*/ ) |
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{ |
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TraceDump( INIT_LEVEL, |
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("WLANLDD: DEthernetFrameMemMngr::DoAllocate") ); |
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|
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return KErrNone; |
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} |
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382 |
|
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// --------------------------------------------------------------------------- |
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384 |
// this default implementation always returns NULL |
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// --------------------------------------------------------------------------- |
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// |
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TUint8* DEthernetFrameMemMngr::DoGetNextFreeRxBuffer( |
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TUint /*aLengthinBytes*/ ) |
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{ |
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TraceDump( RX_FRAME, |
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("WLANLDD: DEthernetFrameMemMngr::DoGetNextFreeRxBuffer") ); |
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|
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return NULL; |
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} |
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|
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// --------------------------------------------------------------------------- |
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// This default implementation always returns NULL |
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// --------------------------------------------------------------------------- |
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// |
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TDataBuffer* DEthernetFrameMemMngr::AllocTxBuffer( TUint aLength ) |
0
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{ |
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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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// |
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TBool DEthernetFrameMemMngr::AddTxFrame( |
18 | 410 |
TDataBuffer* aPacketInUserSpace, |
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TDataBuffer*& aPacketInKernSpace, |
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TBool aUserDataTxEnabled ) |
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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))->AddTxFrame( |
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aPacketInUserSpace, |
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aPacketInKernSpace, |
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aUserDataTxEnabled ); |
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} |
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else |
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{ |
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return EFalse; |
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} |
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0
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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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TDataBuffer* DEthernetFrameMemMngr::GetTxFrame( |
18 | 433 |
const TWhaTxQueueState& aTxQueueState, |
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TBool& aMore ) |
|
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{ |
18 | 436 |
if ( IsMemInUse() && iFrameXferBlock ) |
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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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{ |
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return NULL; |
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} |
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0
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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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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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// |
18 | 461 |
TBool DEthernetFrameMemMngr::ResumeClientTx( TBool aUserDataTxEnabled ) const |
0
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{ |
18 | 463 |
return (static_cast<RFrameXferBlockProtocolStack*>( |
464 |
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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// |
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TBool DEthernetFrameMemMngr::AllTxQueuesEmpty() const |
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{ |
18 | 473 |
return (static_cast<RFrameXferBlockProtocolStack*>( |
474 |
iFrameXferBlock))->AllTxQueuesEmpty(); |
|
0
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} |