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阅读：2038回复：7
高手帮忙看看。
这是我的一段代码，在机器上运行非常稳定，高手帮忙看以下，有什么问题吗？（没想到的）
VOID PtTransferDataComplete( IN NDIS_HANDLE ProtocolBindingContext, IN PNDIS_PACKET Packet, IN NDIS_STATUS Status, IN UINT BytesTransferred ) /*++ Routine Description: Same as the Send above, all sends need to be completed on the Primary\'s MiniportHandle Arguments: Return Value: --*/ { PADAPT pAdapt =(PADAPT)ProtocolBindingContext; PUCHAR pPacketContent; PRSVD Rsvd; UINT OffsetSize,Result,PacketLen; PNDIS_BUFFER pPacketBuffer; PNDIS_PACKET pBakPacket; PNDIS_BUFFER pBakBuffer; PUCHAR pBakContent; UINT BufferLen; DBGPRINT((\"In PtTransferDataComplete\\n\")); // // Returning the Send on the Primary, will point to itself if there is no LBFO // pAdapt = pAdapt->pPrimaryAdapt; Rsvd =(PRSVD)(Packet->MiniportReserved); pBakPacket=(PNDIS_PACKET)(Rsvd->OriginalPkt); if(pAdapt->MiniportHandle) { if(pBakPacket==NULL) NdisMTransferDataComplete(pAdapt->MiniportHandle,Packet,Status,BytesTransferred); else { Status=NdisAllocateMemory(&pPacketContent,BUFFER_SIZE,0,HighestAcceptableMax); CopyPacket2Buffer(pBakPacket,pPacketContent,&OffsetSize); CopyPacket2Buffer(Packet,pPacketContent+OffsetSize,&PacketLen); PacketLen+=OffsetSize; NdisUnchainBufferAtFront(pBakPacket,&pBakBuffer); NdisQueryBufferSafe(pBakBuffer,&pBakContent,&BufferLen,32); NdisFreeBuffer(pBakBuffer); NdisFreeMemory(pBakContent,BUFFER_SIZE,0); NdisFreePacket(pBakPacket); memset(Packet->MiniportReserved,0,sizeof(Packet->MiniportReserved)); NdisUnchainBufferAtFront(Packet,&pPacketBuffer); NdisQueryBufferSafe(pPacketBuffer,&pBakContent,&BufferLen,32); NdisFreeBuffer(pPacketBuffer); NdisFreeMemory(pBakContent,BUFFER_SIZE,0); NdisAllocateBuffer(&Status,&pPacketBuffer,pAdapt->RecvBufferPoolHandle,pPacketContent,PacketLen); NdisChainBufferAtFront(Packet,pPacketBuffer); Packet->Private.Head->Next=NULL; Packet->Private.Tail=NULL; NDIS_SET_PACKET_HEADER_SIZE(Packet,14); NdisMIndicateReceivePacket(pAdapt->MiniportHandle,&Packet,1); if(NDIS_GET_PACKET_STATUS(Packet)!=NDIS_STATUS_PENDING) { MPReturnPacket((NDIS_HANDLE)pAdapt,Packet); } } } return; } NDIS_STATUS PtReceive( IN NDIS_HANDLE ProtocolBindingContext, IN NDIS_HANDLE MacReceiveContext, IN PVOID HeaderBuffer, IN UINT HeaderBufferSize, IN PVOID LookAheadBuffer, IN UINT LookAheadBufferSize, IN UINT PacketSize ) /*++ Routine Description: LBFO - need to use primary for all receives Arguments: Return Value: --*/ { PADAPT OutAdapt,pAdapt =(PADAPT)ProtocolBindingContext; PNDIS_PACKET MyPacket, Packet,MyPacket1; NDIS_STATUS Status = NDIS_STATUS_SUCCESS; /* PUCHAR pEnetAddrDest=NULL; UINT nDataSize=0,i; PNDIS_BUFFER pNdisBuffer=NULL; UCHAR *BufferVa=NULL; PMACHEADER pMACHeader=NULL; PIPHEADER pIPHeader=NULL; PICMPHEADER pICMPHeader=NULL; PTCPHEADER pTCPHeader=NULL; PUDPHEADER pUDPHeader=NULL; */ PNDIS_BUFFER pPacketBuffer,pBakBuffer; PUCHAR pPacketContent,pBakContent; UINT PacketLen; UINT OffsetSize; UINT BytesTransferred; PRSVD Rsvd=NULL; PVOID MediaSpecificInfo=NULL; ULONG MediaSpecificSize=0; if(!pAdapt->MiniportHandle) { Status = NDIS_STATUS_FAILURE; } else do { // // We should not be getting Receives on a Secondary, this is just specific to our LBFO driver // if(pAdapt->isSecondary) { DBGPRINT(\"PASSTHRU GETTING RECIEVES ON SECONDARY\\n\"); ASSERT(0); } // // If this was indicated by the miniport below as a packet, then get that packet pointer and indicate // it as a packet as well(with appropriate status). This way the OOB stuff is accessible to the // transport above us. // Packet = NdisGetReceivedPacket(pAdapt->BindingHandle, MacReceiveContext); if(Packet != NULL) { // // Get a packet off the pool and indicate that up // NdisDprAllocatePacket(&Status, &MyPacket, pAdapt->RecvPacketPoolHandle); if(Status == NDIS_STATUS_SUCCESS) { MyPacket->Private.Head = Packet->Private.Head; MyPacket->Private.Tail = Packet->Private.Tail; // // Get the original packet(it could be the same packet as one received or a different one // based on # of layered MPs) and set it on the indicated packet so the OOB stuff is visible // correctly at the top. // NDIS_SET_ORIGINAL_PACKET(MyPacket, NDIS_GET_ORIGINAL_PACKET(Packet)); NDIS_SET_PACKET_HEADER_SIZE(MyPacket, HeaderBufferSize); // // Set Packet Flags // NdisGetPacketFlags(MyPacket) = NdisGetPacketFlags(Packet); // // Make sure the status is set to NDIS_STATUS_RESOURCES. // NDIS_SET_PACKET_STATUS(MyPacket, NDIS_STATUS_RESOURCES); NdisMIndicateReceivePacket(pAdapt->MiniportHandle, &MyPacket, 1); ASSERT(NDIS_GET_PACKET_STATUS(MyPacket) == NDIS_STATUS_RESOURCES); NdisDprFreePacket(MyPacket); break; } } // // Fall through if the miniport below us has either not indicated a packet or we could not // allocate one // else if(PacketSize<=LookAheadBufferSize) { Status=NdisAllocateMemory(&pPacketContent,BUFFER_SIZE,0,HighestAcceptableMax); if(Status!=NDIS_STATUS_SUCCESS) { DbgPrint(\"PTReceive:NdisAllocateMemory Failed\\n\"); return(NDIS_STATUS_NOT_ACCEPTED); } if(pPacketContent==NULL) { DbgPrint(\"PTReceive:pPacketContent==NULL\\n\"); return(NDIS_STATUS_NOT_ACCEPTED); } NdisZeroMemory(pPacketContent,BUFFER_SIZE); NdisMoveMemory(pPacketContent,HeaderBuffer,HeaderBufferSize); NdisMoveMemory(pPacketContent+HeaderBufferSize,LookAheadBuffer,LookAheadBufferSize); PacketLen=PacketSize+HeaderBufferSize; NdisDprAllocatePacket(&Status,&MyPacket,pAdapt->RecvPacketPoolHandle); if(Status==NDIS_STATUS_SUCCESS) { NdisAllocateBuffer(&Status,&pPacketBuffer,pAdapt->RecvBufferPoolHandle,pPacketContent,PacketLen); NdisChainBufferAtFront(MyPacket,pPacketBuffer); MyPacket->Private.Head->Next=NULL; MyPacket->Private.Tail=NULL; Rsvd=(PRSVD)(MyPacket->MiniportReserved); Rsvd->OriginalPkt=NULL; NDIS_SET_PACKET_HEADER_SIZE(MyPacket,HeaderBufferSize); NdisMIndicateReceivePacket(pAdapt->MiniportHandle,&MyPacket,1); if(NDIS_GET_PACKET_STATUS(MyPacket)!=NDIS_STATUS_PENDING) { DBGPRINT((\"In PtReceive And Free Memory\\n\")); NdisFreeBuffer(pPacketBuffer); NdisFreeMemory(pPacketContent,BUFFER_SIZE,0); NdisDprFreePacket(MyPacket); } } break; } else { Status=NdisAllocateMemory(&pPacketContent,BUFFER_SIZE,0,HighestAcceptableMax); if(Status!=NDIS_STATUS_SUCCESS) { DbgPrint(\"PtReceive:NdisAllocateMemory Failed.\\n\"); return(NDIS_STATUS_NOT_ACCEPTED); } if(pPacketContent==NULL) { DbgPrint(\"PTReceive:pPacketContent==NULL\\n\"); return(NDIS_STATUS_NOT_ACCEPTED); } NdisZeroMemory(pPacketContent,BUFFER_SIZE); NdisDprAllocatePacket(&Status,&MyPacket,pAdapt->RecvPacketPoolHandle); Status=NdisAllocateMemory(&pBakContent,BUFFER_SIZE,0,HighestAcceptableMax); if(Status!=NDIS_STATUS_SUCCESS) { DbgPrint(\"PtReceive:NdisAllocateMemory Failed.\\n\"); return(NDIS_STATUS_NOT_ACCEPTED); } if(pBakContent==NULL) { DbgPrint(\"PTReceive:pPacketContent==NULL\\n\"); return(NDIS_STATUS_NOT_ACCEPTED); } NdisZeroMemory(pBakContent,BUFFER_SIZE); NdisMoveMemory(pBakContent,HeaderBuffer,HeaderBufferSize); NdisMoveMemory(pBakContent+HeaderBufferSize,LookAheadBuffer,LookAheadBufferSize); PacketLen=HeaderBufferSize+PacketSize; NdisAllocateBuffer(&Status,&pPacketBuffer,pAdapt->RecvBufferPoolHandle,pPacketContent,PacketSize-LookAheadBufferSize); NdisChainBufferAtFront(MyPacket,pPacketBuffer); MyPacket->Private.Head->Next=NULL; MyPacket->Private.Tail=NULL; OffsetSize=HeaderBufferSize+LookAheadBufferSize; NdisDprAllocatePacket(&Status,&MyPacket1,pAdapt->RecvPacketPoolHandle); NdisAllocateBuffer(&Status,&pBakBuffer,pAdapt->RecvBufferPoolHandle,pBakContent,OffsetSize); NdisChainBufferAtFront(MyPacket1,pBakBuffer); Rsvd=(PRSVD)(MyPacket->MiniportReserved); Rsvd->OriginalPkt=(PNDIS_PACKET)MyPacket1; NDIS_SET_PACKET_HEADER_SIZE(MyPacket,HeaderBufferSize); NdisTransferData(&Status,pAdapt->BindingHandle,MacReceiveContext,LookAheadBufferSize,PacketSize-LookAheadBufferSize,MyPacket,&BytesTransferred); if(Status!=NDIS_STATUS_PENDING) { PtTransferDataComplete((NDIS_HANDLE)pAdapt,MyPacket,Status,BytesTransferred); } break; } pAdapt->IndicateRcvComplete = TRUE; /* switch(pAdapt->Medium) { case NdisMedium802_3: { NdisMEthIndicateReceive(pAdapt->MiniportHandle, MacReceiveContext, HeaderBuffer, HeaderBufferSize, LookAheadBuffer, LookAheadBufferSize, PacketSize); break; } case NdisMedium802_5: NdisMTrIndicateReceive(pAdapt->MiniportHandle, MacReceiveContext, HeaderBuffer, HeaderBufferSize, LookAheadBuffer, LookAheadBufferSize, PacketSize); break; case NdisMediumFddi: NdisMFddiIndicateReceive(pAdapt->MiniportHandle, MacReceiveContext, HeaderBuffer, HeaderBufferSize, LookAheadBuffer, LookAheadBufferSize, PacketSize); break; default: ASSERT(0); break; } */ } while(FALSE); DBGPRINT((\"In PtReceive\\n\")); return Status; } VOID MPReturnPacket( IN NDIS_HANDLE MiniportAdapterContext, IN PNDIS_PACKET Packet ) /*++ Routine Description: Arguments: Return Value: --*/ { PADAPT pAdapt = (PADAPT)MiniportAdapterContext; PNDIS_PACKET MyPacket; PRSVD Resvd; PNDIS_BUFFER pNdisBuffer; PUCHAR pPacketContent; UINT BufferLen; Resvd = (PRSVD)(Packet->MiniportReserved); MyPacket = Resvd->OriginalPkt; if(MyPacket) { NdisFreePacket(Packet); NdisReturnPackets(&MyPacket, 1); } /*========================================================================= I Add This Code for NdisIndicateReceivePacket =========================================================================*/ else { DBGPRINT((\"In MPReturnPacket And Free Memory\\n\")); NdisUnchainBufferAtFront(Packet,&pNdisBuffer); NdisQueryBufferSafe(pNdisBuffer,(PVOID *)&pPacketContent,&BufferLen,32); NdisFreeBuffer(pNdisBuffer); NdisFreeMemory(pPacketContent,BUFFER_SIZE,0); NdisFreePacket(Packet); DBGPRINT((\"In MPReturnPacket And Free Memory\\n\")); } } |
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沙发#
发布于：2002-04-24 12:55
补充函数
void CopyPacket2Buffer(IN PNDIS_PACKET pPacket,IN OUT PUCHAR pBuff,IN OUT PUINT pLength) { PNDIS_BUFFER BuffDT; PUCHAR BuffVA; UINT BuffLen; *pLength=0; BuffLen=0; NdisQueryPacket(pPacket,NULL,NULL,&BuffDT,NULL); while(BuffDT!=(PNDIS_BUFFER)NULL) { NdisQueryBuffer(BuffDT,&BuffVA,&BuffLen); NdisMoveMemory(pBuff,BuffVA,BuffLen); pBuff=pBuff+BuffLen; *pLength+=BuffLen; NdisGetNextBuffer(BuffDT,&BuffDT); } return; } |
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板凳#
发布于：2002-06-11 16:26
请问PRSVD和PADAPT是如何定义的，PADAPT的定义和PASSTHRU里的定义好像不太一样？
请指点，多谢！ |
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地板#
发布于：2002-06-11 17:23
老弟，我想冒昧问一句，你这段代码是从哪里来的？
从军队的某个单位？ 我想说的是，如果不是的话，那么巧合实在太多，包括 一些历史遗留的bug，以及一些特有的变量命名习惯。 我大致看了看，第一个函数每一行都几乎完全一样。 包括变量名称。 这是我的一段代码，在机器上运行非常稳定，高手帮忙看以下，有什么问题吗？（没想到的） |
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地下室#
发布于：2002-06-12 08:24
好眼熟呀，嗬嗬！
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5楼#
发布于：2002-06-12 09:26
to Huyg:
他好像在另一张帖子中说是从你的代码中修改的，另一篇帖子有人问起过这个问题。 |
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6楼#
发布于：2002-06-12 17:19
对MPReturnPacket的处理好象有点不充分。
另外，当出现else if(PacketSize<=LookAheadBufferSize)的情况时似乎也不会很顺利。 |
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7楼#
发布于：2002-06-12 18:10
怎么这张贴子又翻出来了,他不是说过就是用的版主贴出来的代码?
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