这种情况该符合释放分配的资源？（20分）

小弟用ndis hook 做一个包过滤程序。对收到的包进行改造 只取第一个缓冲区的前54字节，大概代码形态如下：

My_NdisReceivePacket( IN  RECEIVE_PACKET_HANDLE pOrigHandler,IN NDIS_HANDLE ProtocolBindingContext,INPNDIS_PACKET Packet )
{
NdisAllocateBufferPool(&status,&BufferPoolHandler,1);
NdisQueryPacket( Packet, &PhysicalBufferCount, &BufferCount,&pFirstBuffer, &PacketLength);
NdisQueryBufferSafe(pFirstBuffer,&pVirtualAddress,&dwBufferLength,HighPagePrioty);

pIpHeader = ( PIP_HEADER )( (PUCHAR )pVirtualAddress+14 );
pTcpHeader = ( PTCP_HEADER )( ( PUCHAR )pVirtualAddress+ 34 );

NdisAllocateBuffer( &status, &pNewBuffer, BufferPoolHandler, pVirtualAddress, 54);
NdisQueryBufferSafe( pNewBuffer, &pVirtualAddress ,&dwBufferLength,HighPagePriority );

pIpHeader = ( PIP_HEADER )( (PUCHAR )pVirtualAddress+14 );
pTcpHeader = ( PTCP_HEADER )( ( PUCHAR )pVirtualAddress+ 34 );

pIpHeader->DatagramLength = SWAP_WORD( 40 );
RecomputeIpDataCheckSum( pIpHeader ); //重新计算校验和
for( i = 0;i<BufferCount;i++ );
{
NdisUnchainBufferAtBack( Packet, &pFirstBuffer );
}

NdisChainBufferAtFront( Packet, pNewBuffer );

pOrigHandler(ProtocolBindingContext, Packet);//调用系统原函数收包
}

这种情况下 在函数体内的bufferpool和分配的pNewBuffer该如何释放？在哪里释放呢？

[编辑 -  11/22/04 by  EvilRyu]