// // Copyright (c) 1998-1999, Microsoft Corporation, all rights reserved // // send.c // // IEEE1394 mini-port/call-manager driver // // Mini-port Send routines // // 12/28/1998 ADube Created, // // // A Send follows this simple algorithm: // Copy incoming data to local buffers // Create an Mdl for the local copy // Store the IRB and VC in the ndispacket // Use the ndispacket as context in the irp's completion routine // #include //----------------------------------------------------------------------------- // Global counts //----------------------------------------------------------------------------- extern UINT BusSendCompletes; extern UINT NicSendCompletes; extern UINT BusSends; extern ULONG MdlsAllocated[NoMoreCodePaths]; extern ULONG MdlsFreed[NoMoreCodePaths]; //----------------------------------------------------------------------------- // prototypes implementations (alphabetically) //----------------------------------------------------------------------------- NDIS_STATUS nicCopyNdisBufferChainToBuffer( IN PNDIS_BUFFER pInBuffer, IN OUT PVOID pLocalBuffer, IN UINT BufferLength ) { // // This function copies the data the belongs to the // pInMdl chain to the local Buffer. // BufferLength is used for validation purposes only // Fragmentation and insertion of headers will take place here // NDIS_STATUS NdisStatus = NDIS_STATUS_SUCCESS; UINT LocalBufferIndex = 0; // Used as an index to the LocalBuffer, used for validation UINT MdlLength = 0; PVOID MdlAddress = 0; PNDIS_BUFFER pCurrBuffer; TRACE( TL_T, TM_Send, ( "==>nicCopyNdisBufferChainToBuffer pNdisbuffer %x, Buffer %x, Length %x", pInBuffer, pLocalBuffer,BufferLength ) ); ASSERT (pLocalBuffer != NULL); pCurrBuffer = pInBuffer; do { MdlLength = nicNdisBufferLength(pCurrBuffer); MdlAddress= nicNdisBufferVirtualAddress(pCurrBuffer); if (MdlLength != 0) { if (MdlAddress == NULL) { NdisStatus = NDIS_STATUS_FAILURE; TRACE (TL_A, TM_Send, ("Ndis Buffer at %x", pCurrBuffer) ); BREAK (TM_Send, (" nicCopyNdisBufferChainToBuffer: Mdl Address = NULL") ); } if ( LocalBufferIndex + MdlLength > BufferLength) { ASSERT(LocalBufferIndex + MdlLength <= BufferLength); NdisStatus = NDIS_STATUS_BUFFER_TOO_SHORT; BREAK (TM_Send, ("nicCopyNdisBufferChainToBuffer Copy Failed" ) ); } // // Copy the Data to local memory. // NdisMoveMemory((PVOID)((ULONG_PTR)pLocalBuffer+LocalBufferIndex), MdlAddress, MdlLength); LocalBufferIndex += MdlLength; } pCurrBuffer = pCurrBuffer->Next; } while (pCurrBuffer!= NULL); TRACE( TL_T, TM_Send, ( "<==nicCopyNdisBufferChainToBuffer %x",NdisStatus ) ); return NdisStatus; } VOID nicFreeIrb(PIRB pIrb) // // Frees the Memory occcupied by the Irb // { ASSERT(pIrb != NULL); TRACE( TL_T, TM_Irp, ( "==>nicFreeIrb %x", pIrb ) ); if (pIrb != NULL) { FREE_NONPAGED(pIrb); } TRACE( TL_T, TM_Irp, ( "<==nicFreeIrb") ); return; } VOID nicFreeIrp(PIRP pIrp) // // Frees the memory occupied by the Irp // { ASSERT(pIrp != NULL); TRACE( TL_T, TM_Irp, ( "==>nicFreeIrp at %x",pIrp ) ); if (pIrp != NULL) { IoFreeIrp(pIrp); } TRACE( TL_T, TM_Irp, ( "<==nicFreeIrp") ); return; } VOID nicFreeLocalBuffer ( IN UINT Length, IN PVOID Address ) // // Free the Memory pointed to by Address. // The Length parameter is superfluous and will be removed // once I am sure we don;t need it // { NDIS_STATUS NdisStatus = NDIS_STATUS_SUCCESS; ASSERT(Address != NULL); TRACE( TL_T, TM_Send, ( "==>nicFreeLocalBuffer , Address %x", Address) ); if (Address != NULL) { FREE_NONPAGED((PVOID)Address); } TRACE( TL_T, TM_Send, ( "<==niFreeLocalBuffer, NdisStatus %x",NdisStatus ) ); return; } VOID nicFreeMdl(PMDL pMdl) // // This frees the memory belonging to the Mdl. Does not free the // memory that the Mdl Points to // { ASSERT (pMdl != NULL) TRACE( TL_T, TM_Send, ( "==> nicFreeMdl pMdl %x", pMdl ) ); if (pMdl != NULL) { IoFreeMdl(pMdl); } TRACE( TL_T, TM_Send, ( "<== nicFreeMdl") ); return ; } VOID nicFreeToNPagedLookasideList ( IN PNIC_NPAGED_LOOKASIDE_LIST pLookasideList, IN PVOID pBuffer ) // Function Description: // Return the local buffer to the lookaside list // // Atguments // Lookaside list and its buffer // Return Value: // None { TRACE( TL_T, TM_Send, ( "==> nicFreeToNPagedLookasideList , Lookaside list %x, plocalbuffer %x",pLookasideList, pBuffer ) ); NdisFreeToNPagedLookasideList (&pLookasideList->List, pBuffer); NdisInterlockedDecrement (&pLookasideList->OutstandingPackets); TRACE( TL_T, TM_Send, ( "<== nicFreeToNPagedLookasideList ") ); } NDIS_STATUS nicGetIrb( OUT PIRB *ppIrb ) // // This function is to be used in retrieving a free IRB. // that will be supplied as an argument for an IRP // // Initially, this will simple allocate an IRB // Intiailization could be added here // { NDIS_STATUS NdisStatus; TRACE( TL_T, TM_Irp, ( "==>nicGetIrb" ) ); *ppIrb = (PIRB)ALLOC_NONPAGED ( sizeof(IRB), MTAG_HBUFPOOL ); if (*ppIrb != NULL) { NdisZeroMemory ( *ppIrb, sizeof(IRB) ); NdisStatus = NDIS_STATUS_SUCCESS; TRACE( TL_V, TM_Send, ( " nicGetIrb: Irb allocated at %x", *ppIrb ) ); } else { nicIncrementMallocFailure(); NdisStatus = NDIS_STATUS_FAILURE; } TRACE( TL_T, TM_Irp, ( "<==nicGetIrb NdisStatus %x",NdisStatus ) ); return NdisStatus; } NDIS_STATUS nicGetIrp( IN PDEVICE_OBJECT pPdo, OUT PIRP *ppIrp ) // // This function returns am irp to the calling routine // The irp is free and is owned by the nic1394. // NEED TO CHANGE THE STACK SIZE // { NDIS_STATUS NdisStatus; PIRP pIrp; CCHAR StackSize =0; ASSERT (pPdo != NULL); TRACE( TL_T, TM_Irp, ( "==>nicGetIrp Pdo %x", pPdo ) ); if (pPdo == NULL) { ASSERT (pPdo != NULL); NdisStatus = NDIS_STATUS_FAILURE; *ppIrp = NULL; return NdisStatus; } // // Allocate the Irp with the correct stacksize // StackSize = pPdo->StackSize+1; pIrp = IoAllocateIrp (StackSize, FALSE); do { if (pIrp == NULL) { NdisStatus = NDIS_STATUS_FAILURE; break; } TRACE( TL_V, TM_Send, ( " Irp allocated at %x, Stacksize %x",pIrp , StackSize ) ); *ppIrp = pIrp; // // Initialize the Irp // IoInitializeIrp ( *ppIrp, sizeof(IRP), StackSize ); if (*ppIrp != NULL) { NdisStatus = NDIS_STATUS_SUCCESS; } else { nicIncrementMallocFailure(); NdisStatus = NDIS_STATUS_FAILURE; } } while (FALSE); TRACE( TL_T, TM_Irp, ( "<==nicGetIrp ,irp %x",*ppIrp ) ); return NdisStatus; } NDIS_STATUS nicGetLocalBuffer( OPTIONAL IN ULONG Length, OUT PVOID *ppLocalBuffer ) // // This function allocates memory of size 'Length' and returns // a pointer to this memory // { NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; TRACE( TL_T, TM_Send, ( "==>nicGetLocalBuffer Length %x", Length ) ); // // There is a bug in the Nic if this is zero // ASSERT (Length != 0 ); // // There is no lookaside list, We need to allocate memory // *ppLocalBuffer = ALLOC_NONPAGED (Length, MTAG_FBUFPOOL); if (*ppLocalBuffer != NULL) { NdisStatus = NDIS_STATUS_SUCCESS; } else { nicIncrementMallocFailure(); NdisStatus = NDIS_STATUS_FAILURE; } TRACE( TL_T, TM_Send, ( "<==nicGetLocalBuffer, NdisStatus %x at %x",NdisStatus,*ppLocalBuffer ) ); return NdisStatus; } PVOID nicGetLookasideBuffer( IN PNIC_NPAGED_LOOKASIDE_LIST pLookasideList ) // Function Description: // Allocate an buffer from the lookaside list. // will be changed to a macro // // // // Arguments // Lookaside list - from which the buffer is allocated // // // Return Value: // Return buffer can be NULL // { PVOID pLocalBuffer = NULL; TRACE( TL_T, TM_Send, ( "==>nicGetLookasideBuffer pLookasideList %x", pLookasideList) ); ASSERT (pLookasideList != NULL); // // Optimize the lookaside list code path // pLocalBuffer = NdisAllocateFromNPagedLookasideList (&pLookasideList->List); if (pLocalBuffer != NULL) { NdisZeroMemory (pLocalBuffer, pLookasideList->Size); NdisInterlockedIncrement (&pLookasideList->OutstandingPackets); } else { nicIncrementMallocFailure(); } TRACE( TL_T, TM_Send, ( "<==nicGetLookasideBuffer, %x", pLocalBuffer ) ); return pLocalBuffer ; } NDIS_STATUS nicGetMdl( IN UINT Length, IN PVOID pLocalBuffer, OUT PMDL *ppMyMdl) // // Return a locally owned Mdl to the caller. // This will also initialize the MDl with the localbuffer // Initial implementation will allocate mdls // { NDIS_STATUS NdisStatus; TRACE( TL_T, TM_Send, ( "==>nicGetMdl" ) ); ASSERT(pLocalBuffer != NULL); // // Allocate an MDl to point to the structure // (*ppMyMdl) = IoAllocateMdl( pLocalBuffer, Length, FALSE, FALSE, NULL ); // // Initialize the data structures with correct values // if (*ppMyMdl != NULL) { MmBuildMdlForNonPagedPool(*ppMyMdl); (*ppMyMdl)->Next = NULL; NdisStatus = NDIS_STATUS_SUCCESS; } else { nicIncrementMallocFailure(); NdisStatus = NDIS_STATUS_FAILURE; *ppMyMdl = NULL; } TRACE( TL_T, TM_Send, ( "<==nicGetMdl, Mdl %x, LocalBuffer %x", *ppMyMdl, pLocalBuffer) ); return NdisStatus; } VOID nicInitAsyncStreamIrb( IN PCHANNEL_VCCB pChannelVc, IN PMDL pMdl, IN OUT PIRB pIrb ) // This function initializes the Irb that will be used in the Irb // It specifically handles the AsyncStream IRB // It arguments are the Vc block (for destination address), // Mdl (Memory desctiptor for the data and a pointer to the // Irb structure that will be initialized { ASSERT (pMdl != NULL); ASSERT (pIrb != NULL); NdisZeroMemory (pIrb, sizeof (IRB) ); pIrb->FunctionNumber = REQUEST_ASYNC_STREAM; pIrb->Flags = 0; pIrb->u.AsyncStream.nNumberOfBytesToStream = MmGetMdlByteCount(pMdl); pIrb->u.AsyncStream.fulFlags = 0; // // See comments for ISOCH_TAG // pIrb->u.AsyncStream.ulTag = g_IsochTag; pIrb->u.AsyncStream.nChannel = pChannelVc->Channel; pIrb->u.AsyncStream.ulSynch = pChannelVc->ulSynch; pIrb->u.AsyncStream.nSpeed = (INT)pChannelVc->Speed; pIrb->u.AsyncStream.Mdl = pMdl; TRACE( TL_V, TM_Send, ( "Number of Bytes to Stream %x ", pIrb->u.AsyncStream.nNumberOfBytesToStream ) ); TRACE( TL_V, TM_Send, ( "fulFlags %x ", pIrb->u.AsyncStream.fulFlags ) ); TRACE( TL_V, TM_Send, ( "ulTag %x ", pIrb->u.AsyncStream.ulTag ) ); TRACE( TL_V, TM_Send, ( "Channel %x", pIrb->u.AsyncStream.nChannel ) ); TRACE( TL_V, TM_Send, ( "Synch %x", pIrb->u.AsyncStream.ulSynch ) ); TRACE( TL_V, TM_Send, ( "Speed %x", pIrb->u.AsyncStream.nSpeed ) ); TRACE( TL_V, TM_Send, ( "Mdl %x", pIrb->u.AsyncStream.Mdl ) ); } VOID nicInitAsyncWriteIrb( IN PSENDFIFO_VCCB pSendFIFOVc, IN PMDL pMyMdl, IN OUT PIRB pMyIrb ) // This function initializes the Irb that will be used in the Irb // It specifically handles the AsyncWrite IRB // It arguments are the Vc block (for destination address), // Mdl (Memory desctiptor for the data and a pointer to the // Irb structure that will be initialized { // // Sanity check // ASSERT ((*(PULONG)pMyIrb) == 0) pMyIrb->u.AsyncWrite.nNumberOfBytesToWrite = MmGetMdlByteCount(pMyMdl); pMyIrb->u.AsyncWrite.nBlockSize = 0; pMyIrb->u.AsyncWrite.fulFlags = 0; pMyIrb->u.AsyncWrite.Mdl = pMyMdl; pMyIrb->FunctionNumber = REQUEST_ASYNC_WRITE; pMyIrb->Flags = 0; pMyIrb->u.AsyncWrite.nSpeed = (UCHAR)pSendFIFOVc->MaxSendSpeed ; pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_Offset.Off_High = pSendFIFOVc->FifoAddress.Off_High; pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_Offset.Off_Low = pSendFIFOVc->FifoAddress.Off_Low; pMyIrb->u.AsyncWrite.ulGeneration = *pSendFIFOVc->Hdr.pGeneration; pMyIrb->u.AsyncWrite.nBlockSize = 0; pMyIrb->u.AsyncWrite.fulFlags = ASYNC_FLAGS_NONINCREMENTING; pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_ID.NA_Bus_Number = 0x3ff; TRACE(TL_V, TM_Send, ("DestinationAddress.IA_Destination_ID.NA_Bus_Number = 0x%x\n", pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_ID.NA_Bus_Number) ); TRACE(TL_V, TM_Send, ("DestinationAddress.IA_Destination_ID.NA_Node_Number = 0x%x\n", pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_ID.NA_Node_Number) ); TRACE(TL_V, TM_Send, ("DestinationAddress.IA_Destination_Offset.Off_High = 0x%x at 0x%x\n", pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_Offset.Off_High, &pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_Offset.Off_High) ); TRACE(TL_V, TM_Send, ("DestinationAddress.IA_Destination_Offset.Off_Low = 0x%x at 0x%x\n", pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_Offset.Off_Low,&pMyIrb->u.AsyncWrite.DestinationAddress.IA_Destination_Offset.Off_Low) ); TRACE(TL_V, TM_Send, ("nNumberOfBytesToWrite = 0x%x\n", pMyIrb->u.AsyncWrite.nNumberOfBytesToWrite)); TRACE(TL_V, TM_Send, ("nBlockSize = 0x%x\n", pMyIrb->u.AsyncWrite.nBlockSize)); TRACE(TL_V, TM_Send, ("fulFlags = 0x%x\n", pMyIrb->u.AsyncWrite.fulFlags)); TRACE(TL_V, TM_Send, ("Mdl = 0x%x\n", pMyIrb->u.AsyncWrite.Mdl )); TRACE(TL_V, TM_Send, ("ulGeneration = 0x%x at 0x%x \n", pMyIrb->u.AsyncWrite.ulGeneration, &pMyIrb->u.AsyncWrite.ulGeneration)); TRACE(TL_V, TM_Send, ("chPriority = 0x%x\n", pMyIrb->u.AsyncWrite.chPriority)); TRACE(TL_V, TM_Send, ("nSpeed = 0x%x\n", pMyIrb->u.AsyncWrite.nSpeed)); } NDIS_STATUS DummySendPacketsHandler( IN PVCCB pVc, IN PNDIS_PACKET pPacket ) // // To be used on a non-send VC // { return NDIS_STATUS_FAILURE; } VOID nicSendFailureInvalidGeneration( PVCCB pVc ) // Function Description: // // An AsyncStream or AnsyncWrite Irp may be completed // with a status of InvalidGeneration. This function will try and // get a new generation, so that future sends will not be blocked // // Arguments // // // // Return Value: // // // // { NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; PADAPTERCB pAdapter = pVc->Hdr.pAF->pAdapter; TRACE( TL_T, TM_Send, ( "==>nicSendFailureInvalidGeneration ") ); ASSERT (pVc != NULL); do { PNDIS_WORK_ITEM pGetGenerationWorkItem = NULL; BOOLEAN fWorkItemAlreadyLaunched = FALSE; BOOLEAN fQueueWorkItem = FALSE; TRACE( TL_A, TM_Send, ( "Cause: Invalid generation on the asyncwrite packet" ) ); VC_ACQUIRE_LOCK (pVc); if (VC_ACTIVE(pVc) == TRUE) { fQueueWorkItem = TRUE; } fWorkItemAlreadyLaunched = (VC_TEST_FLAGS (pVc, VCBF_GenerationWorkItem)); if (fWorkItemAlreadyLaunched) { // // If the Work Item has already been launched, then do not launch another instance // fQueueWorkItem = FALSE; } if ( fQueueWorkItem ) { nicReferenceCall (pVc, "nicSendFailureInvalidGeneration"); } VC_RELEASE_LOCK (pVc); if (fQueueWorkItem == FALSE) { // this thread simply exits break; } // // We need to update the generation count // pGetGenerationWorkItem = ALLOC_NONPAGED (sizeof(NDIS_WORK_ITEM), MTAG_WORKITEM); if (pGetGenerationWorkItem == NULL) { TRACE( TL_A, TM_Cm, ( "Local Alloc failed for WorkItem - GetGeneration FAILED" ) ); break; } VC_ACQUIRE_LOCK (pVc); VC_SET_FLAG(pVc, VCBF_GenerationWorkItem ); VC_RELEASE_LOCK (pVc); NdisInitializeWorkItem ( pGetGenerationWorkItem , (NDIS_PROC)nicGetGenerationWorkItem, (PVOID)pVc ); NdisInterlockedIncrement(&pAdapter->OutstandingWorkItems); NdisScheduleWorkItem (pGetGenerationWorkItem ); NdisStatus = NDIS_STATUS_SUCCESS; } while (FALSE); TRACE( TL_T, TM_Send, ( "<==nicSendFailureInvalidGeneration %x", NdisStatus) ); } VOID nicMakeGaspHeader ( IN PADAPTERCB pAdapter, IN PGASP_HEADER pGaspHeader ) // Function Description: // This function will take the adapter structure and construct a Gasp Header out of it. // This will be used to make the AsyncStream packets. // // // // Arguments // pAdapter - Local Host in question // pGaspHeader - Location where the Gasp Header is to be stored // // Return Value: // None // { USHORT SourceID; NODE_ADDRESS LocalNodeAddress; NDIS_STATUS NdisStatus; TRACE( TL_T, TM_Send, ( "==>nicMakeGaspHeader padapter %x, pGaspNdisBuffer %x ", pAdapter, pGaspHeader) ); ASSERT (pGaspHeader != NULL); TRACE( TL_V, TM_Send, ( "pAdapter->NodeAddress %x", pAdapter->NodeAddress) ); SourceID = *((PUSHORT)&pAdapter->NodeAddress); if(SourceID ==0) { NdisStatus = nicGet1394AddressFromDeviceObject (pAdapter->pNextDeviceObject, &LocalNodeAddress, USE_LOCAL_NODE); if ( NdisStatus == NDIS_STATUS_SUCCESS) { SourceID = *((PUSHORT)&LocalNodeAddress); ADAPTER_ACQUIRE_LOCK (pAdapter); pAdapter->NodeAddress = LocalNodeAddress; ADAPTER_RELEASE_LOCK (pAdapter); } // // Do not handle failure. As the BCM or a Reset will fix this problem // } TRACE( TL_V, TM_Send, ( "SourceId %x at %x", SourceID, &SourceID) ); pGaspHeader->FirstQuadlet.Bitmap.GH_Source_ID = SourceID ; pGaspHeader->FirstQuadlet.Bitmap.GH_Specifier_ID_Hi = GASP_SPECIFIER_ID_HI; pGaspHeader->SecondQuadlet.Bitmap.GH_Specifier_ID_Lo = GASP_SPECIFIER_ID_LO; pGaspHeader->SecondQuadlet.Bitmap.GH_Version = 1; pGaspHeader->FirstQuadlet.GaspHeaderHigh = SWAPBYTES_ULONG (pGaspHeader->FirstQuadlet.GaspHeaderHigh ); pGaspHeader->SecondQuadlet.GaspHeaderLow = SWAPBYTES_ULONG (pGaspHeader->SecondQuadlet.GaspHeaderLow ); TRACE( TL_V, TM_Send, ( "Gasp Header High %x", pGaspHeader->FirstQuadlet.GaspHeaderHigh) ); TRACE( TL_V, TM_Send, ( "Gasp Header Low %x", pGaspHeader->SecondQuadlet.GaspHeaderLow ) ); TRACE( TL_T, TM_Send, ( "<==nicFreeGaspHeader %x, %x ", pGaspHeader->FirstQuadlet.GaspHeaderHigh, pGaspHeader->SecondQuadlet.GaspHeaderLow ) ); } NTSTATUS AsyncWriteStreamSendComplete( IN PDEVICE_OBJECT DeviceObject, IN PIRP pMyIrp, IN PVOID Context ) // // N.B. this completes both Fifo and channels // // // This function is Completion handler for the Irp used to send data. // This function will invoke NDisCoSendComplete Handler // Needs to use the VC Handle stored in the MiniportReserved[0] // of the packet. // We free all the data structures allocated on the way down, // by SendPacketsHandler (the Irb. Irp and Local memory used and Mdl) // // The LookasideHeader->OutstandingFragments should normally be one for // the defualt ( non-fragmented) case. However, if a failure in SendPackets // occurs, Outstanding fragments will be zero or the context will be null, // in that case we will only free the lookaside buffer (if it exists) and exit, // it will be the responsibility of the SendPacketsHandler // to fail the packet. // { NDIS_STATUS NdisStatus = NDIS_STATUS_SUCCESS; NTSTATUS IrpStatus = STATUS_UNSUCCESSFUL; PVOID pLookasideListBuffer = Context; PLOOKASIDE_BUFFER_HEADER pLookasideHeader = (PLOOKASIDE_BUFFER_HEADER)pLookasideListBuffer ; PNDIS_PACKET pPacket = NULL; PVCCB pVc = NULL; PREMOTE_NODE pRemoteNode = NULL; NDIS_HANDLE NdisVcHandle = NULL; ULONG OutstandingFragments = 0; BUS_OPERATION AsyncOp; PNIC_NPAGED_LOOKASIDE_LIST pLookasideList = NULL; STORE_CURRENT_IRQL; TRACE( TL_T, TM_Send, ( "==>AsyncWriteStreamSendComplete, pMyIrp %x, Context %x", pMyIrp, Context ) ); do { if (pLookasideHeader == NULL) { TRACE( TL_V, TM_Send, ( " AsyncSendComplete - pLookasideHeader == NULL") ); break; } // // This means that a lookaside buffer was allocated and // perhaps MDLS were allocated // if this is the last fragment, Free all the MDLs first // // // Get all the valuable information out of the header. // pPacket = pLookasideHeader->pNdisPacket; pVc = pLookasideHeader->pVc; pRemoteNode = pVc->Hdr.pRemoteNode; pLookasideList = pLookasideHeader->pLookasideList; AsyncOp = pLookasideHeader->AsyncOp; ASSERT (AsyncOp != InvalidOperation); TRACE( TL_V, TM_Send, ( " Vc %x,, pLookaside Buffer %x, pPacket, %x", pVc, pLookasideHeader ,pPacket ) ); ASSERT (pLookasideList != NULL); // // This will tell us if this thread has received the last fragment // OustandingPackets == 0 gets to free the MDLS, and complete the packet // OutstandingFragments = NdisInterlockedDecrement (&pLookasideHeader->OutstandingFragments ); if (OutstandingFragments == 0) { // // If there are no more fragments, then we need to // free all the allocated structures ( the MDLS) on this buffer // ULONG MdlsToFree = pLookasideHeader->FragmentsGenerated; PIRB pIrb = &((PUNFRAGMENTED_BUFFER)pLookasideHeader)->Irb; // // The maximum number of MDLS we can have is equal to // the maximum number of Fragments that were generated // while (MdlsToFree != 0) { PMDL pMdl = NULL; GET_MDL_FROM_IRB (pMdl, pIrb, AsyncOp); TRACE( TL_V, TM_Send, ( " Freeing Mdl %x of Irb %x ", pMdl, pIrb) ); if (pMdl != NULL) { nicFreeMdl (pMdl); if (pVc->Hdr.VcType == NIC1394_SendFIFO) { nicDecFifoSendMdl(); } else { nicDecChannelSendMdl(); } } // // Set up for the next iteration // MdlsToFree --; pIrb = (PVOID)((ULONG_PTR)pIrb + sizeof (IRB)); } //while (MdlsToFree != 0) } //if (OutstandingFragments == 0) // // Map the NT_STATUS belonging to the Irp to an NdisStatus and call NdisMCoSendComplete // Print Debug Output to help in testing. Need to Add more status cases // if (pMyIrp == NULL) { TRACE( TL_V, TM_Send, ( " AsyncSendComplete - pIrp is NULL") ); IrpStatus = STATUS_UNSUCCESSFUL; } else { // // We have a valid IRP, lets see if we failed the IRP and why // IrpStatus = pMyIrp->IoStatus.Status; nicIncrementBusSendCompletes(pVc); } if (IrpStatus != STATUS_SUCCESS) { TRACE( TL_A, TM_Send, ( "==>IRP FAILED StatusCode = %x",IrpStatus ) ); nicIncrementBusFailure(); nicIncrementVcBusSendFailures(pVc, pPacket); // // The generation of the bus has changed. Lets get a new one. // if (IrpStatus == STATUS_INVALID_GENERATION) { nicSendFailureInvalidGeneration((PVCCB)pVc); } NdisStatus = NtStatusToNdisStatus(IrpStatus); NdisInterlockedIncrement (&pVc->Hdr.pAF->pAdapter->AdaptStats.ulXmitError); } else { NdisInterlockedIncrement(&pVc->Hdr.pAF->pAdapter->AdaptStats.ulXmitOk); nicIncrementVcBusSendSucess(pVc, pPacket); } // // Free the Irp and don't touch it after this // if (pMyIrp != NULL) { nicFreeIrp (pMyIrp); pMyIrp = NULL; } // // At this point, we know that the IRP went down to the bus driver // We know if this is the last fragment. So lets figure out if we need // to Complete the packet // if (OutstandingFragments != 0) { // // We need to wait for other fragments to complete // TRACE( TL_V, TM_Send, ( " AsyncSendComplete = NOT the last fragment") ); break; } // // This means that this thread has marked the lookaside header as 'to be freed' // and it is this thread's responsibility to free it. // NdisVcHandle = pVc->Hdr.NdisVcHandle; TRACE( TL_V, TM_Send, ( "Calling NdisCoSendComplete, status %x, VcHandle %x, pPacket %x", NdisStatus,NdisVcHandle, pPacket ) ); nicMpCoSendComplete (NdisStatus, pVc, pPacket); nicFreeToNPagedLookasideList (pLookasideList, pLookasideListBuffer); nicDereferenceCall (pVc, "AsyncWriteStreamSendComplete"); // // Remove the reference on the PDO that the IRP was sent to // if (AsyncOp == AsyncWrite) { // // Async Write references the remote node // ASSERT (pRemoteNode != NULL); nicDereferenceRemoteNode (pRemoteNode, AsyncSendComplete); } } while (FALSE); TRACE( TL_T, TM_Send, ( "<== AsyncWriteStreamSendComplete, NdisStatus %x,IrpStatus %x ", NdisStatus, IrpStatus ) ); // // ALWAYS RETURN STATUS_MORE_PROCESSING_REQUIRED // MATCH_IRQL; return STATUS_MORE_PROCESSING_REQUIRED; } NDIS_STATUS AsyncWriteSendPacketsHandler( IN PVCCB pVc, IN PNDIS_PACKET pPacket ) // // This is the VC handler when packet is sent using the // AsyncWrite 1394 Bus Api // This function, copies the contents of the packet to locally // owned memory, sets up the Irb and the Irp and calls // nicSubmitIrp which is the generic cal to do a IoCallDriver // // The return value is success, if the I/o was successfully pended { PSENDFIFO_VCCB pSendFIFOVc = (SENDFIFO_VCCB*)pVc; PMDL pMyMdl = NULL; PIRB pMyIrb = NULL; PIRP pMyIrp = NULL; BOOLEAN fVcActive = TRUE; PREMOTE_NODE pRemoteNode = NULL; NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; NTSTATUS NtStatus = STATUS_UNSUCCESSFUL; ULONG PacketLength = 0; PVOID pLookasideListBuffer = NULL; PADAPTERCB pAdapter = NULL; USHORT FragmentLength = 0; PNDIS_BUFFER pStartNdisBuffer = NULL; PVOID pStartPacketData = NULL; PLOOKASIDE_BUFFER_HEADER pLookasideHeader = NULL; PNIC_NPAGED_LOOKASIDE_LIST pLookasideList = NULL; ENUM_LOOKASIDE_LIST WhichLookasideList = NoLookasideList; FRAGMENTATION_STRUCTURE Fragment; ULONG NumFragmentsNeeded ; STORE_CURRENT_IRQL; NdisZeroMemory (&Fragment, sizeof (FRAGMENTATION_STRUCTURE)); TRACE( TL_T, TM_Send, ( "==>AsyncWriteSendPacketHandler, Vc %x,Packet %x, FragmentationStruct %x", pSendFIFOVc, pPacket , &Fragment ) ); pRemoteNode = pSendFIFOVc->Hdr.pRemoteNode; ASSERT (pRemoteNode != NULL); do { VC_ACQUIRE_LOCK (pSendFIFOVc); // // Make sure that the Vc is Activated and that no close calls // are pending or that we have already completed a close call // if ( VC_ACTIVE (pSendFIFOVc) == FALSE || REMOTE_NODE_ACTIVE(pRemoteNode) == FALSE) { fVcActive = FALSE; } if (VC_TEST_FLAG( pSendFIFOVc, VCBF_GenerationWorkItem) == TRUE) { TRACE( TL_N, TM_Send, ( "AsyncWriteSendPacketHandler, Getting a new Gen, Fail send ") ); fVcActive = FALSE; } // // This reference will either be dereferenced below in a call to FreeSendPacketDataStructure // below or a call to FreeSendPacketDataStructure made from the Irp's completion routine // if (fVcActive == TRUE) { nicReferenceCall (pVc, "AsyncWriteSendPacketsHandler"); nicReferenceRemoteNode (pRemoteNode, AsyncWriteSendPackets); } VC_RELEASE_LOCK (pSendFIFOVc); if (fVcActive == FALSE) { TRACE( TL_N, TM_Send, ( "AsyncWriteSendPacketHandler, VC Not Active, Vc %x Flag %x", pSendFIFOVc,pSendFIFOVc->Hdr.ulFlags ) ); NdisStatus = NDIS_STATUS_FAILURE; break; } pAdapter = pSendFIFOVc->Hdr.pAF->pAdapter; // // Copy NdisBuffer in Packet to Local Memory and get an Mdl that points // to this memory // NdisQueryPacket( pPacket, NULL, NULL, NULL, &PacketLength); ASSERT (pPacket->Private.Head != NULL); // // Spew out the packet if necessary // nicDumpPkt (pPacket, "AsyncWriteSendPacketsHandler"); // // Initialize the start variables // pStartNdisBuffer = pPacket->Private.Head; pStartPacketData = nicNdisBufferVirtualAddress (pStartNdisBuffer); if (pStartPacketData == NULL) { NdisStatus = NDIS_STATUS_RESOURCES; TRACE( TL_N, TM_Send, ( "AsyncWriteSendPacketHandler, pStartPacketData ") ); break; } TRACE( TL_V, TM_Send, ( "PacketLength %x", PacketLength) ); // // Make a decision on which lookaside list to use. If the tx is unfragmented // then copy over the ndis packet as well // // // first choose the lookaside list. the actual lookaside list is chosen so that the // each can accomodate the maximum number of fragments at its payload // // if (PacketLength < PAYLOAD_100) { pLookasideList = &pAdapter->SendLookasideList100; WhichLookasideList = SendLookasideList100; TRACE( TL_V, TM_Send, ( " PAYLOAD_100 Lookaside List %x", &pAdapter->SendLookasideList100) ); } else if (PacketLength < PAYLOAD_2K) { pLookasideList = &pAdapter->SendLookasideList2K; WhichLookasideList = SendLookasideList2K; TRACE( TL_V, TM_Send, ( " PAYLOAD_2K Lookaside List %x", &pAdapter->SendLookasideList2K) ); } else { // // Large Sends not supported // TODO : Add code for local allocation // ASSERT (!"SendPacket Too Large - Not supported Yet" ); break; } // // are we going to fragment // ASSERT (pLookasideList != NULL) // // We are not going to fragment. Optimize this path // pLookasideListBuffer = nicGetLookasideBuffer (pLookasideList); if (pLookasideListBuffer == NULL ) { NdisStatus = NDIS_STATUS_FAILURE; BREAK (TM_Send, ("nicGetLookasideBuffer FAILED") ); } // // Initialize the header with relevant information that the send complete // will need // pLookasideHeader = (PLOOKASIDE_BUFFER_HEADER)pLookasideListBuffer; pLookasideHeader->IsFragmented = FALSE; // Default pLookasideHeader->FragmentsGenerated = 0; pLookasideHeader->pLookasideList = pLookasideList; pLookasideHeader->pNdisPacket = pPacket; pLookasideHeader->pVc =(PVCCB)pVc; pLookasideHeader->AsyncOp = AsyncWrite; // // Initialize the Fragment structure // // // Do we fragment or not. Base it on the MaxPayload possible // TRACE( TL_V, TM_Send, ( " PacketLength %x, pSendFIFOVc->MaxPayload%x ", PacketLength ,pSendFIFOVc->Hdr.MaxPayload) ); if (PacketLength <= pSendFIFOVc->Hdr.MaxPayload) { // // No need to fragment here. We will use the UNFRAGMENTED Layout // // First Get a local buffer from our lookaside list // PUNFRAGMENTED_BUFFER pUnfragmentedBuffer = (PUNFRAGMENTED_BUFFER )pLookasideHeader; NumFragmentsNeeded = 1; NdisStatus = nicCopyNdisBufferChainToBuffer (pStartNdisBuffer, (PVOID)&pUnfragmentedBuffer ->Data[0], pLookasideList->MaxSendSize ); if (NdisStatus != NDIS_STATUS_SUCCESS) { pLookasideHeader->OutstandingFragments = 1; // this is our refcount BREAK ( TM_Send, ( " AsyncStreamSendPacketHandler, nicCopyNdisPacketToUnfragmentedBuffer Failed ") ); } ASSERT (pLookasideListBuffer != NULL); // // Initialize all the variable needed by the Next section of the code. // This deals with setting up the Mdl and the IRB // pStartNdisBuffer = NULL; Fragment.pStartFragment = (PVOID) &pUnfragmentedBuffer ->Data[0]; Fragment.FragmentLength = PacketLength; Fragment.pCurrNdisBuffer = NULL; pLookasideHeader->FragmentsGenerated = 1; pLookasideHeader->IsFragmented = FALSE; pLookasideHeader->OutstandingFragments = 1; // this is our refcount } else { // // We need to fragment // ULONG Dgl = NdisInterlockedIncrement(&pAdapter->dgl); // // Fragments will be needed . Make sure the calculation for numFragments catches the boundary conditions // NumFragmentsNeeded = nicNumFragmentsNeeded (PacketLength, pSendFIFOVc->Hdr.MaxPayload, sizeof (NDIS1394_FRAGMENT_HEADER) ); // // Initialize the fragment structure. The unfragmented code path // does not care about these fields // // // This structure is local to this function and this thread. // Fragment.TxHeaderSize = sizeof (NDIS1394_FRAGMENT_HEADER); Fragment.pLookasideListBuffer = pLookasideListBuffer; Fragment.AsyncOp = AsyncWrite; Fragment.pAdapter = pRemoteNode->pAdapter; Fragment.pLookasideList = pLookasideList; Fragment.IPDatagramLength = (USHORT)PacketLength - sizeof (NDIS1394_UNFRAGMENTED_HEADER); // // Get Start of first Dest fragment // Fragment.MaxFragmentLength = pSendFIFOVc->Hdr.MaxPayload; Fragment.NumFragmentsNeeded = NumFragmentsNeeded; // // Set up the Fragment Headers that will be used in fragmentation // NdisStatus = nicFirstFragmentInitialization (pPacket->Private.Head, Dgl, &Fragment); if (pLookasideListBuffer == NULL || NdisStatus != NDIS_STATUS_SUCCESS) { BREAK (TM_Send, (" AsyncWriteSendPacketsHandler: nicFirstFragmentInitialization : FAILED" )) ; } ASSERT (pLookasideListBuffer != NULL); pLookasideHeader->IsFragmented = TRUE; pLookasideHeader->OutstandingFragments = NumFragmentsNeeded ; // this is our refcount } TRACE( TL_V, TM_Send, ( "NumFragments %x, pSendFIFOVc->MaxSendSize %x, Packet Size %x", NumFragmentsNeeded,pSendFIFOVc->Hdr.MaxPayload, PacketLength) ); // // Now begin the loop which will send n fragments // do { // // Do we need to fragment. If so , extract one fragment out of the NdisPacket // if (pLookasideHeader->IsFragmented == TRUE ) { // // We copy one fragment over and this will allocate the lookaside list // NdisStatus = nicCopyOneFragment (&Fragment); if (NDIS_STATUS_SUCCESS != NdisStatus) { BREAK ( TM_Send, ( " AsyncWriteSendPacketHandler, nicCopyOneFragment Failed ") ); } // // Get the pointer to the Irb here . Amd set it up for the next time // pMyIrb = Fragment.pCurrentIrb; Fragment.pCurrentIrb = (PIRB)((ULONG_PTR)Fragment.pCurrentIrb + sizeof (IRB) ); TRACE( TL_V, TM_Send, ( " pMyIrb %x, Next Irb %x ", pMyIrb , Fragment.pCurrentIrb ) ); } else { // // No Curr NdisBuffer as this packet was never fragmented. // ASSERT (pLookasideHeader->IsFragmented == FALSE); pMyIrb = &((PUNFRAGMENTED_BUFFER )pLookasideHeader)->Irb; } // // At this point we have one fragment that needs to be transmitted. // Data structures have been updated to set up the MDL and the IRB // ASSERT (Fragment.pStartFragment != NULL); NdisStatus = nicGetMdl (Fragment.FragmentLength , Fragment.pStartFragment, &pMyMdl); if (NdisStatus != NDIS_STATUS_SUCCESS) { pMyMdl = NULL; BREAK ( TM_Send, ( " AsyncWriteSendPacketHandler, nicCopyNdisBufferChainToBuffer Failed ") ); } nicIncFifoSendMdl(); // // Fill in the Irb with the correct values from the VC // Stuff we need to add to the send VC - BlockSize,Generation // nicInitAsyncWriteIrb(pSendFIFOVc, pMyMdl, pMyIrb); // // Get a free Irp // NdisStatus = nicGetIrp (pRemoteNode->pPdo, &pMyIrp); if (NdisStatus != NDIS_STATUS_SUCCESS) { pMyIrp = NULL; break; } // // At this point, we have a guarantee that the Completion routine will be called // ASSERT (NdisStatus == NDIS_STATUS_SUCCESS); // // Dump the Fragment // nicDumpMdl (pMyMdl , 0, "AsyncWrite Fragment"); NIC1394_LOG_PKT( pAdapter, NIC1394_LOGFLAGS_SEND_FIFO, pAdapter->BCRData.LocalNodeNumber, // SourceID pRemoteNode->RemoteAddress.NA_Node_Number, // DestID Fragment.pStartFragment, Fragment.FragmentLength ); // // This function implements the common functionality to be implemented by // all other send/recv cals to IoCallDriver // // // We IGNORE the NtStatus as the completion handler will be called // nicIncrementBusSends(pVc); NtStatus = nicSubmitIrp(pRemoteNode->pPdo, pMyIrp, pMyIrb, AsyncWriteStreamSendComplete, (PVOID)pLookasideListBuffer); TRACE( TL_V, TM_Send, ( " pCurrNdisBuffer %x, NdisStatus %x ", Fragment.pCurrNdisBuffer , NdisStatus ) ); } while (Fragment.pCurrNdisBuffer != NULL && NdisStatus == NDIS_STATUS_SUCCESS); } while (FALSE); // // DO NOT touch the packet if status == NDIS_STATUS_SUCCESS. // // // CleanUp if any of the allocations failed. We do not have a pointer // to the LocalBuffer (it is embedded in the Mdl) so it remains NULL // // NdisStatus != Success means that we never got to nicSubmitIrp // if (NdisStatus != NDIS_STATUS_SUCCESS) { ASSERT (pMyIrp == NULL); // // fVc Active makes sure that we actually got around to allocating // and referencing structures // if (fVcActive == TRUE) { if (pLookasideListBuffer != NULL) { // // Complete this fragment, as we never submit'd the IRP to // the 1394 bus driver // AsyncWriteStreamSendComplete(NULL, // PDO NULL, pLookasideListBuffer); NdisStatus =NDIS_STATUS_SUCCESS; } else { // // This thread needs to decrement the refcounts as // AsyncWriteStreamSendComplete was not called // nicDereferenceCall ((PVCCB) pSendFIFOVc, "AsyncWriteSendPacketsHandler"); nicDereferenceRemoteNode (pRemoteNode, AsyncWriteSendPackets); } } } TRACE( TL_T, TM_Send, ( "<==AsyncWriteSendPacketHandler, NdisStatus %x", NdisStatus ) ); MATCH_IRQL; return NdisStatus; } NDIS_STATUS nicCopyOneFragment ( PFRAGMENTATION_STRUCTURE pFragment ) // Function Description: // This creates one fragment filled with valid data and returns it. // The is complex because the Current NDisBuffer could end before the fragment // or vice versa. // // Information from this fragment is stored and will be used in the next fragment // // Arguments // pFragment - Copies one fragment into the next available fragement. // // Return Value: // Status - Success // // { NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; PNDIS_BUFFER pCurrNdisBuffer = pFragment->pCurrNdisBuffer; PVOID pSourceAddressInNdisBuffer = pFragment->pSourceAddressInNdisBuffer; ULONG FragmentLengthRemaining = pFragment->MaxFragmentLength; USHORT FragmentLength=0; PVOID pSource = NULL; PVOID pDestination = NULL; PVOID pStartFragmentData = NULL; ULONG NdisBufferLengthRemaining = pFragment->NdisBufferLengthRemaining; ULONG LengthToCopy = 0; ULONG FragmentCopyStatus=0; PLOOKASIDE_BUFFER_HEADER pLookasideHeader = NULL; enum { FRAGMENT_COPY_Invalid, FRAGMENT_COPY_NdisBufferCompleted, FRAGMENT_COPY_NdisBufferAndFragmentCompleted, FRAGMENT_COPY_FragmentCompleted }; TRACE( TL_T, TM_Send, ( "==>nicCopyOneFragment pFragment %x", pFragment ) ); ASSERT (pCurrNdisBuffer != NULL); do { // // lets get the destination. We need to account for // ther fragment size and add it to the previous start address // { ULONG CurrFragOffset; CurrFragOffset = pFragment->MaxFragmentLength * (pFragment->CurrFragmentNum++); pStartFragmentData = (PVOID) ((ULONG_PTR) pFragment->pStartOfFirstFragment + CurrFragOffset ); } pFragment->pStartFragment = pStartFragmentData; TRACE( TL_V, TM_Send, ( " pStartFragmentData %x", pStartFragmentData) ); pLookasideHeader = (PLOOKASIDE_BUFFER_HEADER)pFragment->pLookasideListBuffer; // // Do the bookkeeping , Increase refcount and num of fragments used. Refcount decremented in FreeSendDataStructures // NdisInterlockedIncrement (&pLookasideHeader->FragmentsGenerated); // // The Start of the data beginning with the fragment header goes here or in the // case of async stream fragment header and gasp header go here // ASSERT (pFragment->TxHeaderSize == 8 || pFragment->TxHeaderSize == 16); pDestination = (PVOID) ((ULONG_PTR)pStartFragmentData + pFragment->TxHeaderSize ); FragmentLengthRemaining -= pFragment->TxHeaderSize; // // Now we start the copy. Keep on copying into the current fragment until the MaxLength is reached // or the NdisBufferChain is exhausted // pSource = pSourceAddressInNdisBuffer; do { TRACE( TL_T, TM_Send, ( " LengthNdisBuffer %x, FragmentLengthRemaining %x, pCurrNdisBuffer %x", NdisBufferLengthRemaining , FragmentLengthRemaining ,pCurrNdisBuffer ) ); if (FragmentLengthRemaining > NdisBufferLengthRemaining ) { // // Copy the complete NdisBuffer over // LengthToCopy = NdisBufferLengthRemaining; FragmentCopyStatus = FRAGMENT_COPY_NdisBufferCompleted; } if (FragmentLengthRemaining < NdisBufferLengthRemaining ) { // // Copy only as much as required // LengthToCopy = FragmentLengthRemaining; FragmentCopyStatus = FRAGMENT_COPY_FragmentCompleted; } if (FragmentLengthRemaining == NdisBufferLengthRemaining ) { // // Copy the complete Ndis Buffer , move to the next ndis buffer // and update the NdisBufferLengthRemaining field // LengthToCopy = NdisBufferLengthRemaining; FragmentCopyStatus = FRAGMENT_COPY_NdisBufferAndFragmentCompleted; } // // Sanity check to make sure we are not overwriting into free memory. // As this should never happen, there is no recovery mechanism in place. // ASSERT (((PUCHAR)pDestination + LengthToCopy) <= (((PUCHAR) pLookasideHeader) + (pLookasideHeader->pLookasideList->Size) )); // // Do the copy // TRACE ( TL_V, TM_Send, (" nicCopyOneFragment pSource %x , pDestination %x, Length %x", pSource, pDestination, LengthToCopy ) ); NdisMoveMemory (pDestination, pSource, LengthToCopy); // // Update the fragment length remaininig and Total Buffer Size // FragmentLengthRemaining -= LengthToCopy; FragmentLength += (USHORT)LengthToCopy; pDestination = (PVOID) ((ULONG_PTR) pDestination + LengthToCopy); // // Update the NdisBuffer variables // ASSERT (pCurrNdisBuffer != NULL); TRACE( TL_V, TM_Send, ( " FragmentCopyStatus %x", FragmentCopyStatus) ); switch (FragmentCopyStatus) { case FRAGMENT_COPY_NdisBufferCompleted: case FRAGMENT_COPY_NdisBufferAndFragmentCompleted: { // // Move to the next Ndisbuffer // pCurrNdisBuffer = pCurrNdisBuffer->Next; if (pCurrNdisBuffer != NULL) { NdisBufferLengthRemaining = nicNdisBufferLength (pCurrNdisBuffer); pSourceAddressInNdisBuffer = nicNdisBufferVirtualAddress(pCurrNdisBuffer); if (pSourceAddressInNdisBuffer == NULL) { NdisStatus = NDIS_STATUS_RESOURCES; BREAK (TM_Send, ("nicNdisBufferVirtualAddress FAILED " ) ); } // // Set up the values for the next iteration // pSource = pSourceAddressInNdisBuffer; NdisBufferLengthRemaining = nicNdisBufferLength (pCurrNdisBuffer); } else { // // we have reached the end of the NdisPAcket. Mark the fragment header as such // pFragment->lf = lf_LastFragment; } break; } case FRAGMENT_COPY_FragmentCompleted: { // // Fragment has completed. Do not move to the next NdisBuffer // However update StartCopy Address in the NdisBuffer // pSourceAddressInNdisBuffer = (PVOID) ((ULONG_PTR) pSource + LengthToCopy ); NdisBufferLengthRemaining -= LengthToCopy ; break; } default : { ASSERT (0); } } TRACE( TL_T, TM_Send, ( " LengthToCopy %x, FragmentLength %x, ", LengthToCopy, FragmentLength) ); TRACE( TL_T, TM_Send, ( " FragmentLengthRemaining %x, pCurrNdisBuffer %x",FragmentLengthRemaining , pCurrNdisBuffer ) ); }while (FragmentLengthRemaining > 0 && pCurrNdisBuffer != NULL); // // Now that we have the buffer size. Add the fragment header // nicAddFragmentHeader (pStartFragmentData, pFragment, FragmentLength); TRACE( TL_T, TM_Send, ( " Fragment Header added %x", *(PULONG)pStartFragmentData) ); NdisStatus = NDIS_STATUS_SUCCESS; }while (FALSE); // // Now update the output parameters. // if (NdisStatus == NDIS_STATUS_SUCCESS) { // // Update the Lookaside Header structure, to reflect the new position of all the pointers // pFragment->pCurrNdisBuffer = pCurrNdisBuffer; pFragment->pSourceAddressInNdisBuffer = pSourceAddressInNdisBuffer; // // Update the fragment structure with the length remaining in the NdisBuffer // pFragment->NdisBufferLengthRemaining = NdisBufferLengthRemaining ; pFragment->FragmentLength = FragmentLength + pFragment->TxHeaderSize; } TRACE( TL_T, TM_Send, ( "<==nicCopyOneFragment pStartFragmentData %x, pLookasideListBuffer %x, pSourceAddressInNdisBuffer %x, NdisStatus %x", pStartFragmentData, pSourceAddressInNdisBuffer, NdisStatus) ); return NdisStatus; } VOID nicCopyUnfragmentedHeader ( IN PNIC1394_UNFRAGMENTED_HEADER pDestUnfragmentedHeader, IN PVOID pSrcUnfragmentedHeader ) // Function Description: // Expect the Src to be a big Endian unfragmented packet header // It will reverse the byte order in a temp variable and copy it into the // Destination provided. // // Arguments // pDestUnfragmentedHeader - Destination (Little Endian // pSrcUnfragmentedHeader - Source (Big Endian) // // Return Value: // // Success if all the pointers and copy is valid // { ULONG UnfragmentedHeader; TRACE( TL_T, TM_Send, ( "==> nicCopyUnfragmentedHeader pDestUnfragmentedHeader %x, pSrcUnfragmentedHeader %x", pDestUnfragmentedHeader, pSrcUnfragmentedHeader ) ); ASSERT (pSrcUnfragmentedHeader != NULL && pDestUnfragmentedHeader != NULL) ; *((PULONG)pDestUnfragmentedHeader) = SWAPBYTES_ULONG ( *(PULONG) pSrcUnfragmentedHeader); TRACE( TL_T, TM_Send, ( "pDestUnfragmentedHeader %x, ", *(PULONG)pDestUnfragmentedHeader) ); TRACE( TL_T, TM_Send, ( " <== nicCopyUnfragmentedHeader " ) ); } NDIS_STATUS nicFirstFragmentInitialization ( IN PNDIS_BUFFER pStartNdisBuffer, IN ULONG DatagramLabelLong, IN OUT PFRAGMENTATION_STRUCTURE pFragment ) // Function Description: // This will set up the fragement headers that are required for // transmitting multiple fragments. // Sets up the first source and destination for the first fragment // // Arguments // pAdapter - to be used to get the dgl label and the lookaside list // pStartOfData - start of the packet data . To be used in extracting the Unfragmented Header // ppLookasideListBuffer Points to the allocated lookaside buffer // pplookasideheader - points to the lookaside header // // Return Value: // Success if the allocation succeeds // // { NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; PNDIS1394_FRAGMENT_HEADER pHeader = NULL; PVOID pPacketStartData = NULL; USHORT dgl = (USHORT) DatagramLabelLong; TRACE( TL_T, TM_Send, ( "==> nicFirstFragmentInitialization pStartNdisBuffer%x, pFragment%x dgl %x ", pStartNdisBuffer, pFragment, dgl ) ); do { // // Get the start address for the 1st NdisBuffer. This contains // the unfragmented header // pPacketStartData = nicNdisBufferVirtualAddress(pStartNdisBuffer); if (pPacketStartData == NULL) { NdisStatus = NDIS_STATUS_RESOURCES; BREAK (TM_Send, ("NdisBufferVirtual Address is NULL " ) ); } pFragment->UnfragmentedHeader.HeaderUlong = SWAPBYTES_ULONG (((PNDIS1394_UNFRAGMENTED_HEADER)pPacketStartData)->HeaderUlong); TRACE ( TL_V, TM_Send, (" Unfragmented Header %x, pPacketStartData %x", pFragment->UnfragmentedHeader.HeaderUlong , pPacketStartData) ); TRACE ( TL_V, TM_Send, (" original Header lf %x, etherType %x", pFragment->UnfragmentedHeader.u.FH_lf, pFragment->UnfragmentedHeader.u.FH_EtherType) ); // // Now construct a fragmentation header to be used by all the fragments. // pHeader = &pFragment->FragmentationHeader; pHeader ->u.FirstQuadlet.FH_lf = lf_FirstFragment; pHeader ->u.FirstQuadlet.FH_buffersize = pFragment->IPDatagramLength-1; pHeader ->u.FirstQuadlet_FirstFragment.FH_EtherType = pFragment->UnfragmentedHeader.u.FH_EtherType; pHeader ->u1.SecondQuadlet.FH_dgl = dgl; TRACE ( TL_V, TM_Send, (" fragmented Header Hi %x Lo %x", pHeader->u.FH_High, pHeader->u1.FH_Low) ); TRACE ( TL_V, TM_Send, (" fragmented Header lf %x EtherType %x", pHeader ->u.FirstQuadlet_FirstFragment.FH_lf , pHeader ->u.FirstQuadlet_FirstFragment.FH_EtherType ) ); // // temporaty debug spew // TRACE (TL_V, TM_Send, (" copy Header at %x, Orig Header at %x", &pHeader ->u.FirstQuadlet_FirstFragment, pFragment->UnfragmentedHeader) ); // // Initialize the fragmentation structure with packet's first ndis buffer // pFragment->pSourceAddressInNdisBuffer = NdisBufferVirtualAddress (pStartNdisBuffer); if (pFragment->pSourceAddressInNdisBuffer == NULL) { NdisStatus = NDIS_STATUS_FAILURE; } // // Set up the copy source . The first four bytes of data contain the unfragmented header. // We need to skip past these bytes and start the copy from the next byte // pFragment->pSourceAddressInNdisBuffer = (PVOID) ((ULONG_PTR)pFragment->pSourceAddressInNdisBuffer + sizeof (NDIS1394_UNFRAGMENTED_HEADER) ); pFragment->NdisBufferLengthRemaining = NdisBufferLength (pStartNdisBuffer) - sizeof (NDIS1394_UNFRAGMENTED_HEADER); pFragment->pCurrNdisBuffer = pStartNdisBuffer; // // Set up the destination // pFragment->pStartFragment = (PVOID)((ULONG_PTR)pFragment->pLookasideListBuffer + (pFragment->NumFragmentsNeeded*sizeof(IRB))); ((PLOOKASIDE_BUFFER_HEADER)pFragment->pLookasideListBuffer)->pStartOfData = pFragment->pStartFragment; pFragment->pStartOfFirstFragment = pFragment->pStartFragment ; pFragment->CurrFragmentNum = 0; pFragment->lf = lf_FirstFragment; // // The First IRB will reside at the end of the lookaside-header // pFragment->pCurrentIrb = &((PUNFRAGMENTED_BUFFER)pFragment->pLookasideListBuffer)->Irb; TRACE( TL_T, TM_Send, ( " pStartFragment %x, pFragment %x,NumFragmentsNeeded %x,MaxFragmentLength %x ", pFragment->pStartFragment, pFragment->NumFragmentsNeeded, pFragment->MaxFragmentLength) ); NdisStatus = NDIS_STATUS_SUCCESS; } while (FALSE); TRACE( TL_T, TM_Send, ( " <== nicFirstFragmentInitialization NdisStautus %x, pFragment %x, ", NdisStatus, pFragment) ); return NdisStatus; } VOID nicAddFragmentHeader ( IN PVOID pStartFragmentData, IN PFRAGMENTATION_STRUCTURE pFragmentStructure, IN ULONG FragmentLength ) // Function Description: // Copies the Fragment header over after byteswapping it. // For the the first time, the ether type and so forth is already initialized and waiting to be copied. // This funciotn also sets up the values for the next invocation of this function // Arguments // pStartFragmentData - Start of the fragment. Header goes after the gasp header if necessary . // pFragmentationHeader - Header to copy over // fIsFirstFragment - TRUE if this is the first fragment and needs a special header // Return Value: // None // { PNDIS1394_FRAGMENT_HEADER pDestFragmentHeader = (PNDIS1394_FRAGMENT_HEADER)pStartFragmentData; PNDIS1394_FRAGMENT_HEADER pSrcFragmentHeader = &pFragmentStructure->FragmentationHeader; TRACE( TL_T, TM_Send, ( "==> nicAddFragmentHeader pStartFragmentData %x, pFragmentationHeader %x, , FragmentLength %x, lf %x", pStartFragmentData , pSrcFragmentHeader , FragmentLength, pFragmentStructure->lf) ); if (pFragmentStructure->AsyncOp == AsyncStream) { // // First Copy the GaspHeader // NdisMoveMemory (pStartFragmentData , &pFragmentStructure->pAdapter->GaspHeader, sizeof (GASP_HEADER) ); // // Increment the pointers so that the fragment header will be copied after the gasp header // pStartFragmentData = (PVOID) ((ULONG_PTR) pStartFragmentData + sizeof (GASP_HEADER) ); pDestFragmentHeader = (PVOID) pStartFragmentData; TRACE( TL_T, TM_Send, ( " nicAddFragmentHeader Added Gasp Header from %x ", pFragmentStructure->pAdapter->GaspHeader) ); } // // Sanity check , are we overwriting anybody ? // ASSERT (*(PULONG)pDestFragmentHeader == 0); ASSERT (*(PULONG)pFragmentStructure->pCurrentIrb == 0); TRACE( TL_V, TM_Send, ( " pSrcFragmentHeader Hi %x,Lo %x", pSrcFragmentHeader->u.FH_High, pSrcFragmentHeader->u1.FH_Low) ); // // Copy over the lf; // pSrcFragmentHeader->u.FirstQuadlet.FH_lf = pFragmentStructure->lf; // // Now copy over the 8 bytes of the fragment header and byteswap them into big endian // pDestFragmentHeader->u.FH_High = SWAPBYTES_ULONG ( pSrcFragmentHeader->u.FH_High); pDestFragmentHeader->u1.FH_Low = SWAPBYTES_ULONG ( pSrcFragmentHeader->u1.FH_Low); TRACE( TL_V, TM_Send, ( " Fragment Offset %x", pSrcFragmentHeader->u.FirstQuadlet.FH_fragment_offset ) ); // // PREPARE the FRAGMENT STRUCTURE FOR THE NEXT ITERATION // // // Set the first fragment completed flag to true and set up the header for the next fragment // if (pFragmentStructure->lf == lf_FirstFragment) { pFragmentStructure->lf = lf_InteriorFragment; pSrcFragmentHeader->u.FirstQuadlet.FH_fragment_offset = 0; } // // Increase the fragment offset for use in the next fragment // pSrcFragmentHeader->u.FirstQuadlet.FH_fragment_offset += FragmentLength; TRACE( TL_T, TM_Send, ( "<== nicAddFragmentHeader lf %x", pFragmentStructure->lf) ); } NDIS_STATUS AsyncStreamSendPacketsHandler ( IN PVCCB pVc, IN PNDIS_PACKET pPacket ) // Function Description: // This function is used to send packets to the bus // via the async stream irp. the Ndis Packet is copied // to locally owned buffers and mdls and then sent // down to the bus driver // // This code is borrowed heavily from the AsyncStreamIrp code below // // Arguments // pChannelVc - The Vc which needs to send the packets // pPacket - the packet being transmitted // // Return Value: // NdisStatus - if all allocations and irp operations complete // successfully, and the i/o will be completed asynchronously // { NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; NTSTATUS NtStatus = STATUS_UNSUCCESSFUL; PCHANNEL_VCCB pChannelVc = (PCHANNEL_VCCB) pVc; BOOLEAN fVcActive = TRUE; PMDL pMyMdl = NULL; PIRB pMyIrb = NULL; PIRP pMyIrp = NULL; ULONG PacketLength = 0; PVOID pLookasideListBuffer = NULL; PADAPTERCB pAdapter = NULL; PNDIS_BUFFER pStartNdisBuffer = NULL ; PVOID pStartPacketData= NULL ; PNIC_NPAGED_LOOKASIDE_LIST pLookasideList = NULL; PLOOKASIDE_BUFFER_HEADER pLookasideHeader = NULL; ULONG NumFragmentsNeeded = 0; FRAGMENTATION_STRUCTURE Fragment; STORE_CURRENT_IRQL; NdisZeroMemory (&Fragment, sizeof (FRAGMENTATION_STRUCTURE)); TRACE( TL_T, TM_Send, ( "==>AsyncStreamSendPacketsHandler , pVc %x, pPacket %x", pChannelVc , pPacket ) ); pAdapter = pChannelVc->Hdr.pAF->pAdapter; // // This reference will either be dereferenced below in a call to FreeSendPacketDataStructure // below or a call to FreeSendPacketDataStructure made from the Irp's completion routine // do { VC_ACQUIRE_LOCK (pVc); // // Make sure that the Vc is Activated and that no close calls // are pending or that we have already completed a close call // if ( VC_ACTIVE (pChannelVc) == FALSE || ADAPTER_ACTIVE(pAdapter) == FALSE) { fVcActive = FALSE; } if (VC_TEST_FLAG( pChannelVc, VCBF_GenerationWorkItem) == TRUE) { TRACE( TL_N, TM_Send, ( "AsyncStreamSendPacketHandler, Getting a new Gen, Fail send ") ); fVcActive = FALSE; } if (fVcActive == TRUE) { nicReferenceCall (pVc, "AsyncStreamSendPacketsHandler"); } VC_RELEASE_LOCK (pVc); if (fVcActive == FALSE) { TRACE( TL_N, TM_Send, ( "AsyncStreamSendPacketHandler, VC Not Active VC %x , Flag %x", pVc, pVc->Hdr.ulFlags ) ); NdisStatus = NDIS_STATUS_FAILURE; break; } // // Copy NdisBuffer in Packet to Local Memory and get an Mdl that points // to this memory (we get 1 Mdl only) NdisQueryPacket( pPacket, NULL, NULL, NULL, &PacketLength); ASSERT (pPacket->Private.Head != NULL); pStartNdisBuffer = pPacket->Private.Head; pStartPacketData = nicNdisBufferVirtualAddress (pStartNdisBuffer); if (pStartPacketData == NULL) { NdisStatus = NDIS_STATUS_RESOURCES; TRACE( TL_N, TM_Send, ( "AsyncStreamSendPacketHandler, pStartPacketData ") ); break; } TRACE( TL_V, TM_Send, ( "PacketLength %x", PacketLength) ); NumFragmentsNeeded = nicNumFragmentsNeeded (PacketLength, pChannelVc->Hdr.MaxPayload, sizeof (NDIS1394_FRAGMENT_HEADER) + ISOCH_PREFIX_LENGTH ); TRACE( TL_V, TM_Send, ( "NumFragments %x, pVc->MaxSendSize", NumFragmentsNeeded,pVc->Hdr.MaxPayload) ); // // first choose the lookaside list // // if (PacketLength < PAYLOAD_100) { pLookasideList = &pAdapter->SendLookasideList100; TRACE( TL_V, TM_Send, ( " PAYLOAD_100 Lookaside List %x", &pAdapter->SendLookasideList100) ); } else if (PacketLength < PAYLOAD_2K) { pLookasideList = &pAdapter->SendLookasideList2K; TRACE( TL_V, TM_Send, ( " PAYLOAD_2K Lookaside List %x", &pAdapter->SendLookasideList2K) ); } else { // // Add code for local allocation // ASSERT (0); NdisStatus = NDIS_STATUS_FAILURE; break; } // // are we going to fragment // ASSERT (pLookasideList != NULL) // // We are not going to fragment. Optimize this path // pLookasideListBuffer = nicGetLookasideBuffer (pLookasideList); if (pLookasideListBuffer == NULL ) { NdisStatus = NDIS_STATUS_FAILURE; BREAK (TM_Send, ("nicGetLookasideBuffer FAILED") ); } // // Dump out the packet if necessary // nicDumpPkt (pPacket, "AsyncWriteStreamPacketsHandler"); // // Initialize the header with relevant information that the send complete // will need // pLookasideHeader = (PLOOKASIDE_BUFFER_HEADER)pLookasideListBuffer; pLookasideHeader->IsFragmented = FALSE; // Default pLookasideHeader->FragmentsGenerated = 0; pLookasideHeader->pLookasideList = pLookasideList; pLookasideHeader->pNdisPacket = pPacket; pLookasideHeader->pVc =(PVCCB)pVc; pLookasideHeader->AsyncOp = AsyncStream; pLookasideHeader->OutstandingFragments = NumFragmentsNeeded ; // // Initialize the Fragment structure // // // Do we fragment or not. Base it on the MaxPayload field // TRACE( TL_V, TM_Send, ( " Fragment PacketLength %x, pVc->MaxPayload %x ", PacketLength ,pVc->Hdr.MaxPayload) ); // // Do we need to fragment. Use the number of fragments generated to figure it out // if (NumFragmentsNeeded == 1) { // // No need to fragment here. We will use the UNFRAGMENTED Layout // // First Get a local buffer from our lookaside list // PUNFRAGMENTED_BUFFER pUnfragmentedBuffer = (PUNFRAGMENTED_BUFFER )pLookasideHeader; PPACKET_FORMAT pDestination = (PPACKET_FORMAT)&pUnfragmentedBuffer->Data[0]; // // Add the gasp header // NdisMoveMemory ((PVOID)&pDestination->AsyncStreamNonFragmented.GaspHeader, &pAdapter->GaspHeader, sizeof (GASP_HEADER) ); // // copy the data over, to the location just after the Gasp Header // In the unfragmented case, the packet already has the correct header // NdisStatus = nicCopyNdisBufferChainToBuffer (pStartNdisBuffer, (PVOID)&pDestination->AsyncStreamNonFragmented.NonFragmentedHeader, pLookasideList->MaxSendSize); if (NdisStatus != NDIS_STATUS_SUCCESS) { BREAK ( TM_Send, ( " AsyncStreamSendPacketHandler, nicCopyNdisPacketToUnfragmentedBuffer Failed ") ); } ASSERT (pLookasideListBuffer != NULL); // // Initialize all the variable needed by the Next section of the code. // This deals with setting up the Mdl and the IRB // pStartNdisBuffer = NULL; Fragment.pStartFragment = (PVOID)pDestination; Fragment.FragmentLength = PacketLength + sizeof (GASP_HEADER); Fragment.pCurrNdisBuffer = NULL; pLookasideHeader->FragmentsGenerated = 1; pLookasideHeader->IsFragmented = FALSE; } else { // // We need to fragment // ULONG Dgl = NdisInterlockedIncrement(&pAdapter->dgl); // // Initialize the fragment header. The unfragmented code path // does not care about these fields // Fragment.TxHeaderSize = sizeof (NDIS1394_FRAGMENT_HEADER) + sizeof (GASP_HEADER); Fragment.AsyncOp = AsyncStream; Fragment.pLookasideList = pLookasideList; Fragment.pAdapter = pAdapter; Fragment.pLookasideListBuffer = pLookasideListBuffer; Fragment.IPDatagramLength = (USHORT)PacketLength - sizeof (NDIS1394_UNFRAGMENTED_HEADER); Fragment.MaxFragmentLength = pChannelVc->Hdr.MaxPayload; Fragment.NumFragmentsNeeded = NumFragmentsNeeded; // // Allocate from the fragmented pool and initialize the fragment header structure // NdisStatus = nicFirstFragmentInitialization (pPacket->Private.Head, Dgl, &Fragment); if (pLookasideListBuffer == NULL || NdisStatus != NDIS_STATUS_SUCCESS) { BREAK (TM_Send, (" AsyncStreamSendPacketsHandler: nicFirstFragmentInitialization : FAILED" )) ; } ASSERT (pLookasideListBuffer != NULL); pLookasideHeader->IsFragmented = TRUE; } // // Now begin the loop which will send n fragments // do { // // Do we need to fragment. If so , extract one fragment out of the NdisPacket // if (pLookasideHeader->IsFragmented == TRUE ) { // // We copy one fragment over and this will allocate the lookaside list // NdisStatus = nicCopyOneFragment (&Fragment); if (NDIS_STATUS_SUCCESS != NdisStatus) { BREAK ( TM_Send, ( " AsyncStreamSendPacketHandler, nicCopyOneFragment Failed ") ); } // // Get the pointer to the Irb here. and set it up for the next time // // pMyIrb = Fragment.pCurrentIrb; Fragment.pCurrentIrb = (PIRB)((ULONG_PTR)Fragment.pCurrentIrb + sizeof (IRB) ); } else { // // No Curr NdisBuffer as this packet was never fragmented. // ASSERT (pLookasideHeader->IsFragmented == FALSE); pMyIrb = &((PUNFRAGMENTED_BUFFER )pLookasideHeader)->Irb; } // // At this point we have one fragment that needs to be transmitted. // Data structures have been updated to set up the MDL and the IRB // NdisStatus = nicGetMdl (Fragment.FragmentLength , Fragment.pStartFragment , &pMyMdl); if (NdisStatus != NDIS_STATUS_SUCCESS) { BREAK ( TM_Send, ( " AsyncStreamSendPacketHandler, nicCopyNdisBufferChainToBuffer Failed ") ); } nicIncChannelSendMdl() // // Fill in the Irb with the correct values from the VC // Stuff we need to add to the send VC - BlockSize,Generation // nicInitAsyncStreamIrb((PCHANNEL_VCCB)pVc, pMyMdl, pMyIrb); // // Get a free Irp // NdisStatus = nicGetIrp (pAdapter->pNextDeviceObject, &pMyIrp); if (NdisStatus != NDIS_STATUS_SUCCESS) { break; } // // At this point, we have a guarantee that the Completion routine will be called // // // Dump the Fragment // nicDumpMdl (pMyMdl , 0, "AsyncStream Fragment"); NIC1394_LOG_PKT( pAdapter, NIC1394_LOGFLAGS_SEND_CHANNEL, pAdapter->BCRData.LocalNodeNumber, // SourceID pChannelVc->Channel, Fragment.pStartFragment, Fragment.FragmentLength ); // // This function implements the common functionality to be implemented by // all other send/recv cals to IoCallDriver // // // We IGNORE the NtStatus as the completion handler will be called // nicIncrementBusSends(pVc); NtStatus = nicSubmitIrp(pAdapter->pNextDeviceObject, pMyIrp, pMyIrb, AsyncWriteStreamSendComplete, (PVOID)pLookasideListBuffer); TRACE( TL_V, TM_Send, ( " pCurrNdisBuffer %x, NdisStatus %x ", Fragment.pCurrNdisBuffer , NdisStatus ) ); } while (Fragment.pCurrNdisBuffer != NULL && NdisStatus == NDIS_STATUS_SUCCESS); } while (FALSE); // // DO NOT touch the packet if status == NDIS_STATUS_SUCCESS. // // // CleanUp if any of the allocations failed. We do not have a pointer // to the LocalBuffer (it is embedded in the Mdl) so it remains NULL // // NdisStatus != Success means that we never got to nicSubmitIrp // if (NdisStatus != NDIS_STATUS_SUCCESS) { ASSERT (pMyIrp == NULL); // // fVc Active makes sure that we actually got around to allocating // and referencing structures // if (fVcActive == TRUE) { if (pLookasideListBuffer != NULL) { // // Complete this fragment, as we never submit'd the IRP to // the 1394 bus driver // AsyncWriteStreamSendComplete(NULL, // PDO NULL, pLookasideListBuffer); NdisStatus =NDIS_STATUS_SUCCESS; } else { // // This thread needs to decrement the refcounts as // AsyncWriteStreamSendComplete was not called // nicDereferenceCall ((PVCCB) pVc, "AsyncStreamSendPacketsHandler"); } } } TRACE( TL_T, TM_Send, ( "<==AsyncStreamSendPacketHandler, NdisStatus %x", NdisStatus ) ); MATCH_IRQL; // // Make sure this is NDIS_STATUS_PENDING if the Irp was sent down or // AsyncWriteStreamSendCOmplete was called. // return NdisStatus; } NDIS_STATUS nicEthernetVcSend( IN PVCCB pVc, IN PNDIS_PACKET pPacket ) /*++ Routine Description: reroutes all sends on this VC as an CL receive It allocates a packet, moves the NDIS buffer chain into the new packet , sets status to Resources (to force a copy) and indicates the packet upto the protocols. Arguments: pVc Ethernet VC on which this Send came in. pPacket - which needs to be indicated up to the protocols. Return Value: Failure if the call to Allocate an NDIS packet fails. --*/ { PETHERNET_VCCB pEthernetVc = (PETHERNET_VCCB)pVc; PADAPTERCB pAdapter = pVc->Hdr.pAF->pAdapter; BOOLEAN fVcActive = FALSE; NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; PNDIS_PACKET pMyPacket = NULL; NDIS_STATUS IndicatedStatus= NDIS_STATUS_FAILURE; PPKT_CONTEXT pPktContext = NULL; TRACE( TL_T, TM_Send, ( "==>nicEthernetVcSend, pVc %x, pPacket %x", pVc , pPacket ) ); do { ADAPTER_ACQUIRE_LOCK (pAdapter); if (VC_ACTIVE (pEthernetVc)==TRUE) { fVcActive = TRUE; nicReferenceCall (pVc, "nicEthernetVcSend" ) ; } ADAPTER_RELEASE_LOCK (pAdapter); if (fVcActive == FALSE) { NdisStatus = NDIS_STATUS_FAILURE; break; } nicAllocatePacket (&NdisStatus, &pMyPacket , &pEthernetVc->PacketPool ); if (NdisStatus != NDIS_STATUS_SUCCESS || pMyPacket == NULL) { pMyPacket = NULL; BREAK (TM_Send, "Ethernet VC - AllocatePacket failed" ) ; } pMyPacket->Private.Head = pPacket->Private.Head; pMyPacket->Private.Tail = pPacket->Private.Tail; IndicatedStatus = NDIS_STATUS_RESOURCES; NDIS_SET_PACKET_STATUS(pMyPacket, IndicatedStatus); // // Set up the context // pPktContext = (PPKT_CONTEXT)&pMyPacket->MiniportReservedEx; pPktContext->EthernetSend.pOrigPacket = pPacket; // // Dump the packet // { nicDumpPkt (pMyPacket, "Conn Less Rcv "); } // // Now indicate the packet // // // Bluff the OOB Size. To get past an assert on debug Ndis // NDIS_SET_PACKET_HEADER_SIZE (pMyPacket, 14); NdisMIndicateReceivePacket (pAdapter->MiniportAdapterHandle, &pMyPacket, 1); pPktContext = (PPKT_CONTEXT)&pMyPacket->MiniportReservedEx; ASSERT ( pPacket == pPktContext->EthernetSend.pOrigPacket ); nicMpCoSendComplete (NDIS_STATUS_SUCCESS, pVc, pPacket); // // We have successfully pended the Io/ // Now the completion routine will be called // NdisStatus = NDIS_STATUS_SUCCESS; } while (FALSE); if (pMyPacket != NULL) { // // Free the locally allcoate packet // nicFreePacket(pMyPacket, &pEthernetVc->PacketPool); } if (fVcActive == TRUE) { nicDereferenceCall (pVc, "nicEthernetVcSend" ) ; } TRACE( TL_T, TM_Send, ( "<==nicEthernetVcSend, ") ); return NdisStatus; } VOID nicGetGenerationWorkItem( NDIS_WORK_ITEM* pGetGenerationWorkItem, IN PVOID Context ) // Function Description: // Work Item used to submit a Get Generation IRP at Passive Level // // Arguments // // Return Value: // Generation - { PVCCB pVc = (PVCCB) Context; PADAPTERCB pAdapter = pVc->Hdr.pAF->pAdapter; NDIS_STATUS NdisStatus = NDIS_STATUS_FAILURE; UINT Generation = 0; TRACE( TL_T, TM_Mp, ( "==>nicGetGenerationWorkItem, pVc", Context ) ); NdisStatus = nicGetGenerationCount (pAdapter , &Generation); // // Update the generation // VC_ACQUIRE_LOCK (pVc); if (NdisStatus == NDIS_STATUS_SUCCESS && Generation > *pVc->Hdr.pGeneration ) { pAdapter->Generation = Generation; } VC_CLEAR_FLAGS(pVc, VCBF_GenerationWorkItem); VC_RELEASE_LOCK (pVc); // Dereference the call, this will allow the close call to complete. Do not touch VC after this. // nicDereferenceCall(pVc, "nicSendFailureInvalidGeneration"); TRACE( TL_T, TM_Mp, ( "<==nicGetGenerationWorkItem, Gen %x", Generation) ); FREE_NONPAGED (pGetGenerationWorkItem); NdisInterlockedDecrement(&pAdapter->OutstandingWorkItems); } VOID nicUpdatePacketState ( IN PNDIS_PACKET pPacket, IN ULONG Tag ) /*++ Routine Description: Validates and then updates that packet tag. So we can heep track of the packet Arguments: Return Value: --*/ { switch (Tag) { case NIC1394_TAG_COMPLETED: { *(PULONG)(&pPacket->MiniportReserved[0]) = NIC1394_TAG_COMPLETED; break; } case NIC1394_TAG_IN_SEND: { *(PULONG)(&pPacket->MiniportReserved[0]) = NIC1394_TAG_IN_SEND; break; } default: { ASSERT (!"Invalid Tag on NdisPacket"); } } } VOID nicMpCoSendComplete ( NDIS_STATUS NdisStatus, PVCCB pVc, PNDIS_PACKET pPacket ) /*++ Routine Description: Wrapper function around NdisMCoSendComplete Arguments: Return Value: --*/ { nicIncrementSendCompletes (pVc); if (NdisStatus == NDIS_STATUS_SUCCESS) { nicIncrementVcSendPktCount(pVc, pPacket); } else { nicIncrementVcSendFailures (pVc, pPacket); } nicUpdatePacketState (pPacket, NIC1394_TAG_COMPLETED); NdisMCoSendComplete(NdisStatus, pVc->Hdr.NdisVcHandle, pPacket); } UINT nicNumFragmentsNeeded ( UINT PacketLength , UINT MaxPayload, UINT FragmentOverhead ) /*++ Routine Description: Now account for the Fragment headers as well. A fragment header will be added at the head of each fragment. The Unfragmented header at the head of the data will be removed Arguments: FragmentOverhead - the size of the fragment header, in the asyncstream it includes the gasp header+fragment header. for asyncwrite it is just the fragmentation header Return Value: --*/ { UINT NewPacketSize; UINT TotalCapacitySoFar; UINT NumFragmentsNeeded ; ASSERT (PacketLength != 0 ); ASSERT (MaxPayload != 0) ; ASSERT (FragmentOverhead != 0); // // This division takes care of the case where PacketLength // is an integral multiple of the MaxPayload. Since we add 1 to the fragment // it takes care of the overhead added by the fragment headers // NumFragmentsNeeded = (PacketLength / MaxPayload) + 1; // // If we add the fragment and gasp header to our fragments, we // might need another fragment due to an overflow // // // Calculate the new packet size after fragmentation // { // // Add the length of the fragment headers // NewPacketSize = PacketLength + (NumFragmentsNeeded * FragmentOverhead); // // Now remove the default non-fragment header // NewPacketSize -= sizeof (NDIS1394_UNFRAGMENTED_HEADER) ; } // // // TotalCapacitySoFar = NumFragmentsNeeded * MaxPayload; if ( NewPacketSize > TotalCapacitySoFar) { // // We'll need one more fragment // NumFragmentsNeeded ++; } return NumFragmentsNeeded ; } VOID nicCheckForEthArps ( IN PNDIS_PACKET pPkt ) /*++ Routine Description: It will print the pkt if an eth arp or arp response goes through nic1394 Arguments: Return Value: --*/ { PNDIS_BUFFER pBuffer; ULONG Len; ENetHeader* pENetHeader = NULL; PETH_ARP_PKT pArp = NULL; USHORT PacketType; USHORT opcode; extern ULONG g_ulDumpEthPacket ; do { if (g_ulDumpEthPacket == 0) { break; } pBuffer = pPkt->Private.Head; Len = NdisBufferLength (pBuffer); if (Len < sizeof (ENetHeader) ) { ASSERT (Len >= sizeof (ENetHeader) ); break; } pENetHeader = (ENetHeader*) NdisBufferVirtualAddress (pBuffer); if (pENetHeader == NULL) { ASSERT ( pENetHeader != NULL); break; } PacketType = ntohs (pENetHeader->eh_type); if (PacketType == ARP_ETH_ETYPE_IP) { break; } if (PacketType == ARP_ETH_ETYPE_ARP) { DbgPrint ("Arp Pkt - "); } pArp = (ETH_ARP_PKT*)pENetHeader; opcode = ntohs(pArp->opcode); if (opcode == ARP_ETH_REQUEST ) { DbgPrint ("Request "); } else if (opcode == ARP_ETH_RESPONSE ) { DbgPrint ("Response "); } else { break; } // Print the packet DbgPrint("\n"); { ENetAddr Addr; Addr = pArp->sender_hw_address; DbgPrint ("Sender Hw Addr %x %x %x %x %x %x \n", Addr.addr[0], Addr.addr[1], Addr.addr[2], Addr.addr[3], Addr.addr[4], Addr.addr[5]); DbgPrint ("Ip Addr %x\n",pArp->sender_IP_address); Addr = pArp->target_hw_address; DbgPrint ("Target Hw Addr %x %x %x %x %x %x \n", Addr.addr[0], Addr.addr[1], Addr.addr[2], Addr.addr[3], Addr.addr[4], Addr.addr[5]); DbgPrint ("Ip Addr %x\n",pArp->target_IP_address); } } while (FALSE); }