C++ KeReleaseSpinLock函数代码示例

VOID
Primary_FileSystemShutdown (
	IN PPRIMARY	Primary
	)
{
	ULONG		listenSocketIndex;


	Primary_Reference(Primary);

	SPY_LOG_PRINT( LFS_DEBUG_PRIMARY_ERROR,
		("Primary_FileSystemShutdown: Entered primary = %p\n", Primary));

	do 
	{
		if(Primary->Agent.ThreadHandle == NULL)
		{
			ASSERT(LFS_BUG);
			break;
		}

		ASSERT(Primary->Agent.ThreadObject != NULL);

		if(Primary->Agent.Flags & PRIMARY_AGENT_TERMINATED)
		{
			break;
		} 
		else
		{
			PPRIMARY_AGENT_REQUEST	primaryAgentRequest;
			NTSTATUS				ntStatus;
			LARGE_INTEGER			timeOut;
	
		
			primaryAgentRequest = AllocPrimaryAgentRequest(TRUE);
			primaryAgentRequest->RequestType = PRIMARY_AGENT_REQ_SHUTDOWN;

			QueueingPrimaryAgentRequest(
				Primary,
				primaryAgentRequest
				);

			timeOut.QuadPart = - LFS_TIME_OUT;		// 10 sec
			ntStatus = KeWaitForSingleObject(
							&primaryAgentRequest->CompleteEvent,
							Executive,
							KernelMode,
							FALSE,
							&timeOut
							);

			ASSERT(ntStatus == STATUS_SUCCESS);

			KeClearEvent(&primaryAgentRequest->CompleteEvent);

			if(ntStatus == STATUS_SUCCESS) 
			{
			    SPY_LOG_PRINT( LFS_DEBUG_PRIMARY_INFO,
								("Primary_FileSystemShutdown: thread shutdown\n"));
			} 
			else
			{
				ASSERT(LFS_BUG);
				break;
			}
		}
	}while(0);
	
	for(listenSocketIndex=0; listenSocketIndex<MAX_SOCKETLPX_INTERFACE; listenSocketIndex++)
	{
		if(Primary->Agent.ListenSocket[listenSocketIndex].Active != TRUE)
			continue;
		

		while(1) 
		{	
			KIRQL		oldIrql;
			BOOLEAN		found;
		    PLIST_ENTRY	primarySessionListEntry;

	
			KeAcquireSpinLock(&Primary->PrimarySessionQSpinLock[listenSocketIndex], &oldIrql);
			found = FALSE;

			for (primarySessionListEntry = Primary->PrimarySessionQueue[listenSocketIndex].Flink;
				 primarySessionListEntry != &Primary->PrimarySessionQueue[listenSocketIndex];
				 primarySessionListEntry = primarySessionListEntry->Flink)
			{		
				PPRIMARY_SESSION primarySession;
		 
				primarySession = CONTAINING_RECORD (primarySessionListEntry, PRIMARY_SESSION, ListEntry);
		 
				//if(primarySession->LfsDeviceExt && primarySession->LfsDeviceExt->FileSystemType == FileSystemType)
				//{
					RemoveEntryList(primarySessionListEntry);
				    KeReleaseSpinLock(&Primary->PrimarySessionQSpinLock[listenSocketIndex], oldIrql);
					
					InitializeListHead(primarySessionListEntry);
					PrimarySession_FileSystemShutdown(primarySession);

//.........这里部分代码省略.........

//.........这里部分代码省略.........
        DebugPrint((ClassDebugRemoveLock, "ClassReleaseRemoveLock: "
                    "maxCount = %0I64x\n", maxCount));

        KeAcquireSpinLock(&commonExtension->RemoveTrackingSpinlock,
                          &oldIrql);

        while(*listEntry != NULL) {

            PREMOVE_TRACKING_BLOCK block;
            LARGE_INTEGER difference;

            block = *listEntry;

            KeQueryTickCount((&difference));

            difference.QuadPart -= block->TimeLocked.QuadPart;

            DebugPrint((ClassDebugRemoveLock, "ClassReleaseRemoveLock: "
                        "Object %p (tag %p) locked for %I64d ticks\n",
                        DeviceObject, block->Tag, difference.QuadPart));

            if(difference.QuadPart >= maxCount) {

                DebugPrint((ClassDebugError, ">>>>>ClassReleaseRemoveLock: "
                            "Object %p (tag %p) locked for %I64d ticks - TOO LONG\n",
                            DeviceObject, block->Tag, difference.QuadPart));
                DebugPrint((ClassDebugError, ">>>>>ClassReleaseRemoveLock: "
                            "Lock acquired in file %s on line %d\n",
                            block->File, block->Line));
                ASSERT(FALSE);
            }

            if((found == FALSE) && ((*listEntry)->Tag == Tag)) {

                *listEntry = block->NextBlock;
                ExFreePool(block);
                found = TRUE;

            } else {

                listEntry = &((*listEntry)->NextBlock);

            }
        }

        if(!found) {
            if(commonExtension->RemoveTrackingUntrackedCount == 0) {
                DebugPrint((ClassDebugError, ">>>>>ClassReleaseRemoveLock: "
                            "Couldn't find Tag %p in the lock tracking list\n",
                            Tag));
                ASSERT(FALSE);
            } else {
                DebugPrint((ClassDebugError, ">>>>>ClassReleaseRemoveLock: "
                            "Couldn't find Tag %p in the lock tracking list - "
                            "may be one of the %d untracked requests still "
                            "outstanding\n",
                            Tag,
                            commonExtension->RemoveTrackingUntrackedCount));

                commonExtension->RemoveTrackingUntrackedCount--;
                ASSERT(commonExtension->RemoveTrackingUntrackedCount >= 0);
            }
        }

        KeReleaseSpinLock(&commonExtension->RemoveTrackingSpinlock,
                          oldIrql);

    #endif

    lockValue = InterlockedDecrement(&commonExtension->RemoveLock);

    DebugPrint((ClassDebugRemoveLock, "ClassReleaseRemoveLock: "
                "Released for Object %p & irp %p - count is %d\n",
                DeviceObject, Tag, lockValue));

    ASSERT(lockValue >= 0);

    ASSERTMSG("RemoveLock decreased to meet LockLowWatermark",
              ((LockLowWatermark == 0) || !(lockValue == LockLowWatermark)));

    if(lockValue == 0) {

        ASSERT(commonExtension->IsRemoved);

        //
        // The device needs to be removed.  Signal the remove event
        // that it's safe to go ahead.
        //

        DebugPrint((ClassDebugRemoveLock, "ClassReleaseRemoveLock: "
                    "Release for object %p & irp %p caused lock to go to zero\n",
                    DeviceObject, Tag));

        KeSetEvent(&commonExtension->RemoveEvent,
                   IO_NO_INCREMENT,
                   FALSE);

    }
    return;
}

NTSTATUS USBPcapBufferHandleReadIrp(PIRP pIrp,
                                    PDEVICE_EXTENSION pDevExt,
                                    PUINT32 pBytesRead)
{
    PDEVICE_EXTENSION      pRootExt;
    PUSBPCAP_ROOTHUB_DATA  pRootData;
    PVOID                  buffer;
    UINT32                 bufferLength;
    UINT32                 bytesRead;
    NTSTATUS               status;
    KIRQL                  irql;
    PIO_STACK_LOCATION     pStack = NULL;

    pStack = IoGetCurrentIrpStackLocation(pIrp);

    *pBytesRead = 0;

    if (pStack->Parameters.Read.Length == 0)
    {
        return STATUS_SUCCESS;
    }

    pRootExt = (PDEVICE_EXTENSION)pDevExt->context.control.pRootHubObject->DeviceExtension;
    pRootData = pRootExt->context.usb.pDeviceData->pRootData;

    if (pRootData->buffer == NULL)
    {
        return STATUS_UNSUCCESSFUL;
    }

    /*
     * Since control device has DO_DIRECT_IO bit set the MDL is already
     * probed and locked
     */
    buffer = MmGetSystemAddressForMdlSafe(pIrp->MdlAddress,
                                          NormalPagePriority);

    if (buffer == NULL)
    {
        return STATUS_INSUFFICIENT_RESOURCES;
    }
    else
    {
        bufferLength = MmGetMdlByteCount(pIrp->MdlAddress);
    }

    /* Get data from data queue, if there is no data we put
     * this IRP to Cancel-Safe queue and return status pending
     * otherwise complete this IRP then return SUCCESS
     */
    KeAcquireSpinLock(&pRootData->bufferLock, &irql);
    bytesRead = USBPcapBufferRead(pRootData,
                                  buffer, bufferLength);
    KeReleaseSpinLock(&pRootData->bufferLock, irql);

    *pBytesRead = bytesRead;
    if (bytesRead == 0)
    {
        IoCsqInsertIrp(&pDevExt->context.control.ioCsq,
                       pIrp, NULL);
        return STATUS_PENDING;
    }

    return STATUS_SUCCESS;
}

NTSTATUS
AnajoystDispatch(
    IN  PDEVICE_OBJECT pDO,
    IN  PIRP pIrp
)
/*++

Routine Description:
    Driver dispatch routine. Processes IRPs based on IRP MajorFunction

Arguments:
    pDO     -- pointer to the device object
    pIrp    -- pointer to the IRP to process

Return Value:
    Returns the value of the IRP IoStatus.Status

--*/
{
    PIO_STACK_LOCATION pIrpStack;
    KIRQL OldIrql;
    NTSTATUS  Status;
    DWORD     dwRetries = 0;

    //DbgBreakPoint();

    pIrpStack = IoGetCurrentIrpStackLocation(pIrp);

    Status = STATUS_SUCCESS;
    pIrp->IoStatus.Status = Status;
    pIrp->IoStatus.Information = 0;

    switch (pIrpStack->MajorFunction)
    {
    case IRP_MJ_CREATE:

        //
        // perform synchronous I/O
        //

        //pIrpStack->FileObject->Flags |= FO_SYNCHRONOUS_IO;
        //NB This is bad code -- we are simply one thread wandering off through the computer -- we should be queuing up a DPC,
        //returning status_pending to the calling program, then finishing the job when the dpc goes.  This is possible given
        //the analog game port technology.

        // don't slam it into digital mode
        //Status = AnajoystReset (((PJOY_EXTENSION)pDO->DeviceExtension)->DeviceAddress);

        //((PJOY_EXTENSION)pDO->DeviceExtension)->CurrentDeviceMode = NULL;

        // KeDelayExecutionThread( KernelMode, FALSE, &LI10ms); //unnecessary since AnajoystReset has a delay in it?

        pIrp->IoStatus.Status = Status;
        break;

    case IRP_MJ_CLOSE:

        break;

    case IRP_MJ_READ:

        //
        // Find out which device we are and read, but first make sure
        // there is enough room
        //

        DebugTrace(("IRP_MJ_READ"));
        //DbgBreakPoint();


        if (pIrpStack->Parameters.Read.Length < sizeof(JOY_DD_INPUT_DATA))
        {
            Status = STATUS_BUFFER_TOO_SMALL;
            pIrp->IoStatus.Status = Status;
            break;
        }

        //
        // Serialize and get the current device values
        //

        KeAcquireSpinLock(((PJOY_EXTENSION) pDO->DeviceExtension)->SpinLock,
                          & OldIrql);


        Status = AnajoystPoll(pDO, pIrp);

        //
        // release the spinlock
        //

        KeReleaseSpinLock(((PJOY_EXTENSION)pDO->DeviceExtension)->SpinLock,
                          OldIrql);

        pIrp->IoStatus.Status = Status;
        pIrp->IoStatus.Information  = sizeof (JOY_DD_INPUT_DATA);
        break;


    case IRP_MJ_DEVICE_CONTROL:
//.........这里部分代码省略.........

/*
 * @implemented
 */
NTSTATUS
NTAPI
IoAcquireRemoveLockEx(IN PIO_REMOVE_LOCK RemoveLock,
                      IN OPTIONAL PVOID Tag,
                      IN LPCSTR File,
                      IN ULONG Line,
                      IN ULONG RemlockSize)
{
    KIRQL OldIrql;
    LONG LockValue;
    PIO_REMOVE_LOCK_TRACKING_BLOCK TrackingBlock;
    PEXTENDED_IO_REMOVE_LOCK Lock = (PEXTENDED_IO_REMOVE_LOCK)RemoveLock;

    /* Increase the lock count */
    LockValue = InterlockedIncrement(&(Lock->Common.IoCount));
    ASSERT(LockValue > 0);
    if (!Lock->Common.Removed)
    {
        /* Check what kind of lock this is */
        if (RemlockSize == (sizeof(IO_REMOVE_LOCK_DBG_BLOCK) + sizeof(IO_REMOVE_LOCK_COMMON_BLOCK)))
        {
            ASSERT(Lock->Dbg.HighWatermark == 0 || LockValue <= Lock->Dbg.HighWatermark);

            /* Allocate a tracking block */
            TrackingBlock = ExAllocatePoolWithTag(NonPagedPool, sizeof(IO_REMOVE_LOCK_TRACKING_BLOCK), Lock->Dbg.AllocateTag);
            if (!TrackingBlock)
            {
                /* Keep count of failures for lock release and missing tags */ 
                InterlockedIncrement(&(Lock->Dbg.LowMemoryCount));
            }
            else
            {
                /* Initialize block */
                RtlZeroMemory(TrackingBlock, sizeof(IO_REMOVE_LOCK_TRACKING_BLOCK));
                TrackingBlock->Tag = Tag;
                TrackingBlock->File = File;
                TrackingBlock->Line = Line;
                KeQueryTickCount(&(TrackingBlock->LockMoment));

                /* Queue the block */
                KeAcquireSpinLock(&(Lock->Dbg.Spin), &OldIrql);
                TrackingBlock->Next = Lock->Dbg.Blocks;
                Lock->Dbg.Blocks = TrackingBlock;
                KeReleaseSpinLock(&(Lock->Dbg.Spin), OldIrql);
            }
        }
    }
    else
    {
        /* Otherwise, decrement the count and check if it's gone */
        if (!InterlockedDecrement(&(Lock->Common.IoCount)))
        {
            /* Signal the event */
            KeSetEvent(&(Lock->Common.RemoveEvent), IO_NO_INCREMENT, FALSE);
        }

        /* Return pending delete */
        return STATUS_DELETE_PENDING;
    }

    /* Otherwise, return success */
    return STATUS_SUCCESS;
}

// When user-mode file system application returns EventInformation,
// search corresponding pending IRP and complete it
NTSTATUS
DokanCompleteIrp(
    __in PDEVICE_OBJECT DeviceObject,
    __in PIRP Irp
	)
{
	KIRQL				oldIrql;
    PLIST_ENTRY			thisEntry, nextEntry, listHead;
	PIRP_ENTRY			irpEntry;
	PDokanVCB			vcb;
	PEVENT_INFORMATION	eventInfo;

	eventInfo		= (PEVENT_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
	ASSERT(eventInfo != NULL);
	
	//DDbgPrint("==> DokanCompleteIrp [EventInfo #%X]\n", eventInfo->SerialNumber);

	vcb = DeviceObject->DeviceExtension;
	if (GetIdentifierType(vcb) != VCB) {
		return STATUS_INVALID_PARAMETER;
	}

	//DDbgPrint("      Lock IrpList.ListLock\n");
	ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);
	KeAcquireSpinLock(&vcb->Dcb->PendingIrp.ListLock, &oldIrql);

	// search corresponding IRP through pending IRP list
	listHead = &vcb->Dcb->PendingIrp.ListHead;

    for (thisEntry = listHead->Flink; thisEntry != listHead; thisEntry = nextEntry) {

		PIRP				irp;
		PIO_STACK_LOCATION	irpSp;

        nextEntry = thisEntry->Flink;

        irpEntry = CONTAINING_RECORD(thisEntry, IRP_ENTRY, ListEntry);

		// check whether this is corresponding IRP

        //DDbgPrint("SerialNumber irpEntry %X eventInfo %X\n", irpEntry->SerialNumber, eventInfo->SerialNumber);

		// this irpEntry must be freed in this if statement
		if (irpEntry->SerialNumber != eventInfo->SerialNumber)  {
			continue;
		}

		RemoveEntryList(thisEntry);

		irp = irpEntry->Irp;
	
		if (irp == NULL) {
			// this IRP is already canceled
			ASSERT(irpEntry->CancelRoutineFreeMemory == FALSE);
			DokanFreeIrpEntry(irpEntry);
			irpEntry = NULL;
			break;
		}

		if (IoSetCancelRoutine(irp, NULL) == NULL) {
			// Cancel routine will run as soon as we release the lock
			InitializeListHead(&irpEntry->ListEntry);
			irpEntry->CancelRoutineFreeMemory = TRUE;
			break;
		}

		// IRP is not canceled yet
		irpSp = irpEntry->IrpSp;	
		
		ASSERT(irpSp != NULL);
					
		// IrpEntry is saved here for CancelRoutine
		// Clear it to prevent to be completed by CancelRoutine twice
		irp->Tail.Overlay.DriverContext[DRIVER_CONTEXT_IRP_ENTRY] = NULL;
		KeReleaseSpinLock(&vcb->Dcb->PendingIrp.ListLock, oldIrql);

		switch (irpSp->MajorFunction) {
		case IRP_MJ_DIRECTORY_CONTROL:
			DokanCompleteDirectoryControl(irpEntry, eventInfo);
			break;
		case IRP_MJ_READ:
			DokanCompleteRead(irpEntry, eventInfo);
			break;
		case IRP_MJ_WRITE:
			DokanCompleteWrite(irpEntry, eventInfo);
			break;
		case IRP_MJ_QUERY_INFORMATION:
			DokanCompleteQueryInformation(irpEntry, eventInfo);
			break;
		case IRP_MJ_QUERY_VOLUME_INFORMATION:
			DokanCompleteQueryVolumeInformation(irpEntry, eventInfo);
			break;
		case IRP_MJ_CREATE:
			DokanCompleteCreate(irpEntry, eventInfo);
			break;
		case IRP_MJ_CLEANUP:
			DokanCompleteCleanup(irpEntry, eventInfo);
			break;
//.........这里部分代码省略.........

NTSTATUS
RegisterPendingIrpMain(
    __in PDEVICE_OBJECT DeviceObject,
    __in PIRP			Irp,
	__in ULONG			SerialNumber,
	__in PIRP_LIST		IrpList,
	__in ULONG			Flags,
	__in ULONG			CheckMount
    )
{
 	PIRP_ENTRY			irpEntry;
    PIO_STACK_LOCATION	irpSp;
    KIRQL				oldIrql;
 
	//DDbgPrint("==> DokanRegisterPendingIrpMain\n");

	if (GetIdentifierType(DeviceObject->DeviceExtension) == VCB) {
		PDokanVCB vcb = DeviceObject->DeviceExtension;
		if (CheckMount && !vcb->Dcb->Mounted) {
			DDbgPrint(" device is not mounted\n");
			return STATUS_INSUFFICIENT_RESOURCES;
		}
	}

    irpSp = IoGetCurrentIrpStackLocation(Irp);
 
    // Allocate a record and save all the event context.
    irpEntry = DokanAllocateIrpEntry();

    if (NULL == irpEntry) {
		DDbgPrint("  can't allocate IRP_ENTRY\n");
        return  STATUS_INSUFFICIENT_RESOURCES;
    }

	RtlZeroMemory(irpEntry, sizeof(IRP_ENTRY));

    InitializeListHead(&irpEntry->ListEntry);

	irpEntry->SerialNumber		= SerialNumber;
    irpEntry->FileObject		= irpSp->FileObject;
    irpEntry->Irp				= Irp;
	irpEntry->IrpSp				= irpSp;
	irpEntry->IrpList			= IrpList;
	irpEntry->Flags				= Flags;

	DokanUpdateTimeout(&irpEntry->TickCount, DOKAN_IRP_PENDING_TIMEOUT);

	//DDbgPrint("  Lock IrpList.ListLock\n");
	ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);
    KeAcquireSpinLock(&IrpList->ListLock, &oldIrql);

    IoSetCancelRoutine(Irp, DokanIrpCancelRoutine);

    if (Irp->Cancel) {
        if (IoSetCancelRoutine(Irp, NULL) != NULL) {
			//DDbgPrint("  Release IrpList.ListLock %d\n", __LINE__);
            KeReleaseSpinLock(&IrpList->ListLock, oldIrql);

            DokanFreeIrpEntry(irpEntry);

            return STATUS_CANCELLED;
        }
	}

    IoMarkIrpPending(Irp);

    InsertTailList(&IrpList->ListHead, &irpEntry->ListEntry);

    irpEntry->CancelRoutineFreeMemory = FALSE;

	// save the pointer in order to be accessed by cancel routine
	Irp->Tail.Overlay.DriverContext[DRIVER_CONTEXT_IRP_ENTRY] =  irpEntry;


	KeSetEvent(&IrpList->NotEmpty, IO_NO_INCREMENT, FALSE);

	//DDbgPrint("  Release IrpList.ListLock\n");
    KeReleaseSpinLock(&IrpList->ListLock, oldIrql);

	//DDbgPrint("<== DokanRegisterPendingIrpMain\n");
    return STATUS_PENDING;;
}

NTSTATUS
DokanGetAccessToken(
   __in PDEVICE_OBJECT	DeviceObject,
   __in PIRP			Irp
   )
{
	KIRQL				oldIrql;
    PLIST_ENTRY			thisEntry, nextEntry, listHead;
	PIRP_ENTRY			irpEntry;
	PDokanVCB			vcb;
	PEVENT_INFORMATION	eventInfo;
	PACCESS_TOKEN		accessToken;
	NTSTATUS			status = STATUS_INVALID_PARAMETER;
	HANDLE				handle;
	PIO_STACK_LOCATION	irpSp = NULL;
	BOOLEAN				hasLock = FALSE;
	ULONG				outBufferLen;
	ULONG				inBufferLen;
	PACCESS_STATE		accessState;

	DDbgPrint("==> DokanGetAccessToken\n");

	__try {
		eventInfo		= (PEVENT_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
		ASSERT(eventInfo != NULL);

		if (Irp->RequestorMode != UserMode) {
			DDbgPrint("  needs to be called from user-mode\n");
			status = STATUS_INVALID_PARAMETER;
			__leave;
		}

		vcb = DeviceObject->DeviceExtension;
		if (GetIdentifierType(vcb) != VCB) {
			DDbgPrint("  GetIdentifierType != VCB\n");
			status = STATUS_INVALID_PARAMETER;
			__leave;
		}

		irpSp = IoGetCurrentIrpStackLocation(Irp);
		outBufferLen = irpSp->Parameters.DeviceIoControl.OutputBufferLength;
		inBufferLen = irpSp->Parameters.DeviceIoControl.InputBufferLength;
		if (outBufferLen != sizeof(EVENT_INFORMATION) ||
			inBufferLen != sizeof(EVENT_INFORMATION)) {
			DDbgPrint("  wrong input or output buffer length\n");
			status = STATUS_INVALID_PARAMETER;
			__leave;
		}

		ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);
		KeAcquireSpinLock(&vcb->Dcb->PendingIrp.ListLock, &oldIrql);
		hasLock = TRUE;

		// search corresponding IRP through pending IRP list
		listHead = &vcb->Dcb->PendingIrp.ListHead;

		for (thisEntry = listHead->Flink; thisEntry != listHead; thisEntry = nextEntry) {

			nextEntry = thisEntry->Flink;

			irpEntry = CONTAINING_RECORD(thisEntry, IRP_ENTRY, ListEntry);

			if (irpEntry->SerialNumber != eventInfo->SerialNumber)  {
				continue;
			}

			// this irp must be IRP_MJ_CREATE
			if (irpEntry->IrpSp->Parameters.Create.SecurityContext) {
				accessState = irpEntry->IrpSp->Parameters.Create.SecurityContext->AccessState;
			}
			break;
		}
		KeReleaseSpinLock(&vcb->Dcb->PendingIrp.ListLock, oldIrql);
		hasLock = FALSE;

		if (accessState == NULL) {
			DDbgPrint("  can't find pending Irp: %d\n", eventInfo->SerialNumber);
			__leave;
		}

		accessToken = SeQuerySubjectContextToken(&accessState->SubjectSecurityContext);
		if (accessToken == NULL) {
			DDbgPrint("  accessToken == NULL\n");
			__leave;
		}
		// NOTE: Accessing *SeTokenObjectType while acquring sping lock causes
		// BSOD on Windows XP.
		status = ObOpenObjectByPointer(accessToken, 0, NULL, GENERIC_ALL,
			*SeTokenObjectType, KernelMode, &handle);
		if (!NT_SUCCESS(status)) {
			DDbgPrint("  ObOpenObjectByPointer failed: 0x%x\n", status);
			__leave;
		}

		eventInfo->AccessToken.Handle = handle;
		Irp->IoStatus.Information = sizeof(EVENT_INFORMATION);
		status = STATUS_SUCCESS;

	} __finally {
		if (hasLock) {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    for ( i = 0; i < len; i++, pChar+=2)
      pHBAExt->VendorId[i] = *pChar;

    pChar = (PCHAR)pMPDrvInfoGlobal->MPRegInfo.ProductId.Buffer;
    len = min(16, (pMPDrvInfoGlobal->MPRegInfo.ProductId.Length/2));
    for ( i = 0; i < len; i++, pChar+=2)
      pHBAExt->ProductId[i] = *pChar;

    pChar = (PCHAR)pMPDrvInfoGlobal->MPRegInfo.ProductRevision.Buffer;
    len = min(4, (pMPDrvInfoGlobal->MPRegInfo.ProductRevision.Length/2));
    for ( i = 0; i < len; i++, pChar+=2)
      pHBAExt->ProductRevision[i] = *pChar;

    // Add HBA extension to master driver object's linked list.

#if defined(_AMD64_)

    KeAcquireInStackQueuedSpinLock(&pMPDrvInfoGlobal->DrvInfoLock, &LockHandle);

#else

    KeAcquireSpinLock(&pMPDrvInfoGlobal->DrvInfoLock, &SaveIrql);

#endif

    InsertTailList(&pMPDrvInfoGlobal->ListMPHBAObj, &pHBAExt->List);

    pMPDrvInfoGlobal->DrvInfoNbrMPHBAObj++;

#if defined(_AMD64_)

    KeReleaseInStackQueuedSpinLock(&LockHandle);

#else

    KeReleaseSpinLock(&pMPDrvInfoGlobal->DrvInfoLock, SaveIrql);

#endif

    if (!pMPDrvInfoGlobal->GlobalsInitialized)
    {
        HANDLE thread_handle;
        OBJECT_ATTRIBUTES object_attributes;

        KeInitializeSpinLock(&pMPDrvInfoGlobal->RequestListLock);
        InitializeListHead(&pMPDrvInfoGlobal->RequestList);
        KeInitializeEvent(&pMPDrvInfoGlobal->RequestEvent, SynchronizationEvent, FALSE);

#ifdef USE_SCSIPORT
        KeInitializeSpinLock(&pMPDrvInfoGlobal->ResponseListLock);
        KeInitializeEvent(&pMPDrvInfoGlobal->ResponseEvent, SynchronizationEvent, FALSE);
        InitializeListHead(&pMPDrvInfoGlobal->ResponseList);
#endif

        KeInitializeEvent(&pMPDrvInfoGlobal->StopWorker, NotificationEvent, FALSE);

        pMPDrvInfoGlobal->GlobalsInitialized = TRUE;

        InitializeObjectAttributes(&object_attributes, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);

        ntstatus = PsCreateSystemThread(
            &thread_handle,
            (ACCESS_MASK) 0L,
            &object_attributes,
            NULL,
            NULL,
            ImScsiWorkerThread,
            NULL);

        if (!NT_SUCCESS(ntstatus))
        {
            DbgPrint("PhDskMnt::ScsiGetLUExtension: Cannot create worker thread. (%#x)\n", ntstatus);

            status = SP_RETURN_ERROR;
        }
        else
        {
            ObReferenceObjectByHandle(
                thread_handle,
                FILE_READ_ATTRIBUTES | SYNCHRONIZE,
                *PsThreadType,
                KernelMode,
                (PVOID*)&pMPDrvInfoGlobal->WorkerThread,
                NULL
                );

            ZwClose(thread_handle);

            //for (i = 0; i < pHBAExt->NbrLUNsperHBA; i++)
            //    ImScsiCreateLU(pHBAExt, 0, (UCHAR)i, 0);
        }
    }

//Done:
    *pBAgain = FALSE;    
        
    KdPrint2(("PhDskMnt::MpHwFindAdapter: End, status = 0x%X\n", status));

    return status;
}                                                     // End MpHwFindAdapter().

//.........这里部分代码省略.........
												PdoData->LanscsiAdapterPDO.DeviceMode,
												PdoData->LanscsiAdapterPDO.SupportedFeatures,
												PdoData->LanscsiAdapterPDO.EnabledFeatures
										));
				Information->PdoInfo.AdapterStatus = PdoData->LanscsiAdapterPDO.LastAdapterStatus;
				Information->PdoInfo.DeviceMode = PdoData->LanscsiAdapterPDO.DeviceMode;
				Information->PdoInfo.SupportedFeatures = PdoData->LanscsiAdapterPDO.SupportedFeatures;
				Information->PdoInfo.EnabledFeatures = PdoData->LanscsiAdapterPDO.EnabledFeatures;
			} else {

				//
				// Return status from the event queue.
				//

				ULONG					adapterStatus;
				PNDASBUS_PDOEVENT_ENTRY ndasPdoStatus;

				ndasPdoStatus = NdasBusDequeuePdoStatusItem(&PdoData->LanscsiAdapterPDO);
				if(ndasPdoStatus) {
					BOOLEAN	empty;

					adapterStatus = ndasPdoStatus->AdapterStatus;
					empty = NdasBusIsEmpty(&PdoData->LanscsiAdapterPDO);
					if(!empty) {
						adapterStatus |= NDASSCSI_ADAPTERINFO_STATUSFLAG_NEXT_EVENT_EXIST;
					}

					//
					// Free the entry
					//

					NdasBusDestroyPdoStatusItem(ndasPdoStatus);
				} else {
					KeReleaseSpinLock(&PdoData->LanscsiAdapterPDO.LSDevDataSpinLock, oldIrql);

					//
					// No more entry
					//

					Bus_KdPrint_Def(BUS_DBG_SS_NOISE, ("No more status item for SlotNo %d!\n", Query->SlotNo));
					ntStatus = STATUS_NO_MORE_ENTRIES;
					break;
				}

				Bus_KdPrint_Def(BUS_DBG_SS_TRACE, ("QueuedAdapterStatus:PDO:%p Status:%08lx DevMod:%08lx SupFeat:%08lx EnFeat:%08lx\n",
												PdoData->Self,
												adapterStatus,
												PdoData->LanscsiAdapterPDO.DeviceMode,
												PdoData->LanscsiAdapterPDO.SupportedFeatures,
												PdoData->LanscsiAdapterPDO.EnabledFeatures
										));
				Information->PdoInfo.AdapterStatus = adapterStatus;
				Information->PdoInfo.DeviceMode = PdoData->LanscsiAdapterPDO.DeviceMode;
				Information->PdoInfo.SupportedFeatures = PdoData->LanscsiAdapterPDO.SupportedFeatures;
				Information->PdoInfo.EnabledFeatures = PdoData->LanscsiAdapterPDO.EnabledFeatures;
			}

			KeReleaseSpinLock(&PdoData->LanscsiAdapterPDO.LSDevDataSpinLock, oldIrql);

			ObDereferenceObject(PdoData->Self);
		} else {
			Bus_KdPrint_Def(BUS_DBG_SS_NOISE, ("No PDO for SlotNo %d!\n", Query->SlotNo));
			ntStatus = STATUS_NO_SUCH_DEVICE;
		}
		break;
	}

//.........这里部分代码省略.........
	memcpy(ote_conn->remote_addr, remote_addr, remote_addr->AddressLength);

	// set local address with connobj

	if (local_addr->AddressLength > sizeof(ote_conn->local_addr)) {
		KdPrint(("[tdi_fw] tdi_connect: address to long! (%u)\n", local_addr->AddressLength));
		goto done;
	}
	memcpy(ote_conn->local_addr, local_addr, local_addr->AddressLength);

	KdPrint(("[tdi_fw] tdi_connect(pid:%u/%u): %x:%u -> %x:%u (ipproto = %d)\n",
		ote_conn->pid, PsGetCurrentProcessId(),
		ntohl(((TDI_ADDRESS_IP *)(local_addr->Address))->in_addr),
		ntohs(((TDI_ADDRESS_IP *)(local_addr->Address))->sin_port),
		ntohl(((TDI_ADDRESS_IP *)(remote_addr->Address))->in_addr),
		ntohs(((TDI_ADDRESS_IP *)(remote_addr->Address))->sin_port), ipproto));

	/*
	 * Call quick_filter
	 */

	request.struct_size = sizeof(request);

	request.type = TYPE_CONNECT;
	request.direction = DIRECTION_OUT;
	request.proto = ipproto;

	// don't use ote_conn->pid because one process can create connection object
	// but another one can connect
	request.pid = (ULONG)PsGetCurrentProcessId();
	if (request.pid == 0) {
		// avoid idle process pid (XXX do we need this?)
		request.pid = ote_addr->pid;
	}

	// get user SID & attributes (can't call get_current_sid_a at DISPATCH_LEVEL)
	if ((request.sid_a = copy_sid_a(ote_addr->sid_a, ote_addr->sid_a_size)) != NULL)
		request.sid_a_size = ote_addr->sid_a_size;
	
	memcpy(&request.addr.from, &local_addr->AddressType, sizeof(struct sockaddr));
	memcpy(&request.addr.to, &remote_addr->AddressType, sizeof(struct sockaddr));
	request.addr.len = sizeof(struct sockaddr_in);

	memset(&rule, 0, sizeof(rule));

	result = quick_filter(&request, &rule);

	memcpy(request.log_rule_id, rule.rule_id, RULE_ID_SIZE);

	if (result == FILTER_ALLOW && ipproto == IPPROTO_TCP) {
		struct flt_request *context_req = NULL;

		// add connection with state "SYN_SENT"
		status = add_tcp_conn(ote_conn, TCP_STATE_SYN_SENT);
		if (status != STATUS_SUCCESS) {
			KdPrint(("[tdi_fw] tdi_connect: add_conn: 0x%x!\n", status));
			
			result = FILTER_DENY;
			goto done;				// don't log this failure
		}

		if (rule.log >= RULE_LOG_LOG) {
			// set ote_conn->log_disconnect
			ote_conn->log_disconnect = (rule.log >= RULE_LOG_COUNT);

			// copy request for completion (LOG success or not)
			context_req = (struct flt_request *)malloc_np(sizeof(*context_req));
			if (context_req != NULL) {
				memcpy(context_req, &request, sizeof(*context_req));

				// don't free SID
				request.sid_a = NULL;

				// don't log request in this time
				rule.log = RULE_LOG_NOLOG;
			}
		}

		// set completion to add connection info to connection table
		completion->routine = tdi_connect_complete;
		completion->context = context_req;
	}

	// if logging is needed log request
	if (rule.log >= RULE_LOG_LOG)
		log_request(&request);

done:
	// cleanup
	if (ote_conn != NULL)
		KeReleaseSpinLock(&g_ot_hash_guard, irql);
	if (request.sid_a != NULL)
		free(request.sid_a);

	if (result != FILTER_ALLOW) {
		irp->IoStatus.Status = STATUS_REMOTE_NOT_LISTENING;	// set fake status
	}

	return result;
}

static void
usbd_ctrl_callback(struct usb_xfer *xfer, usb_error_t error)
{
	irp *ip;
	struct ndis_softc *sc = usbd_xfer_softc(xfer);
	struct ndisusb_ep *ne = usbd_xfer_get_priv(xfer);
	struct ndisusb_xfer *nx;
	uint8_t irql;
	union usbd_urb *urb;
	struct usbd_urb_vendor_or_class_request *vcreq;
	struct usb_page_cache *pc;
	uint8_t type = 0;
	struct usb_device_request req;
	int len;

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		nx = usbd_aq_getfirst(sc, ne);
		if (nx == NULL)
			return;

		ip = nx->nx_priv;
		urb = usbd_geturb(ip);
		vcreq = &urb->uu_vcreq;

		if (vcreq->uvc_trans_flags & USBD_TRANSFER_DIRECTION_IN) {
			pc = usbd_xfer_get_frame(xfer, 1);
			len = usbd_xfer_frame_len(xfer, 1);
			usbd_copy_out(pc, 0, vcreq->uvc_trans_buf, len);
			nx->nx_urbactlen += len;
		}

		usbd_xfer_complete(sc, ne, nx, USB_ERR_NORMAL_COMPLETION);
		/* fall through */
	case USB_ST_SETUP:
next:
		/* get next transfer */
		KeAcquireSpinLock(&ne->ne_lock, &irql);
		if (IsListEmpty(&ne->ne_pending)) {
			KeReleaseSpinLock(&ne->ne_lock, irql);
			return;
		}
		nx = CONTAINING_RECORD(ne->ne_pending.nle_flink,
		    struct ndisusb_xfer, nx_next);
		RemoveEntryList(&nx->nx_next);
		/* add a entry to the active queue's tail.  */
		InsertTailList((&ne->ne_active), (&nx->nx_next));
		KeReleaseSpinLock(&ne->ne_lock, irql);

		ip = nx->nx_priv;
		urb = usbd_geturb(ip);
		vcreq = &urb->uu_vcreq;

		switch (urb->uu_hdr.uuh_func) {
		case URB_FUNCTION_CLASS_DEVICE:
			type = UT_CLASS | UT_DEVICE;
			break;
		case URB_FUNCTION_CLASS_INTERFACE:
			type = UT_CLASS | UT_INTERFACE;
			break;
		case URB_FUNCTION_CLASS_OTHER:
			type = UT_CLASS | UT_OTHER;
			break;
		case URB_FUNCTION_CLASS_ENDPOINT:
			type = UT_CLASS | UT_ENDPOINT;
			break;
		case URB_FUNCTION_VENDOR_DEVICE:
			type = UT_VENDOR | UT_DEVICE;
			break;
		case URB_FUNCTION_VENDOR_INTERFACE:
			type = UT_VENDOR | UT_INTERFACE;
			break;
		case URB_FUNCTION_VENDOR_OTHER:
			type = UT_VENDOR | UT_OTHER;
			break;
		case URB_FUNCTION_VENDOR_ENDPOINT:
			type = UT_VENDOR | UT_ENDPOINT;
			break;
		default:
			/* never reached.  */
			break;
		}

		type |= (vcreq->uvc_trans_flags & USBD_TRANSFER_DIRECTION_IN) ?
		    UT_READ : UT_WRITE;
		type |= vcreq->uvc_reserved1;

		req.bmRequestType = type;
		req.bRequest = vcreq->uvc_req;
		USETW(req.wIndex, vcreq->uvc_idx);
		USETW(req.wValue, vcreq->uvc_value);
		USETW(req.wLength, vcreq->uvc_trans_buflen);

		nx->nx_urbbuf		= vcreq->uvc_trans_buf;
		nx->nx_urblen		= vcreq->uvc_trans_buflen;
		nx->nx_urbactlen	= 0;

		pc = usbd_xfer_get_frame(xfer, 0);
		usbd_copy_in(pc, 0, &req, sizeof(req));
		usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
//.........这里部分代码省略.........

static void
usbd_non_isoc_callback(struct usb_xfer *xfer, usb_error_t error)
{
	irp *ip;
	struct ndis_softc *sc = usbd_xfer_softc(xfer);
	struct ndisusb_ep *ne = usbd_xfer_get_priv(xfer);
	struct ndisusb_xfer *nx;
	struct usbd_urb_bulk_or_intr_transfer *ubi;
	struct usb_page_cache *pc;
	uint8_t irql;
	uint32_t len;
	union usbd_urb *urb;
	usb_endpoint_descriptor_t *ep;
	int actlen, sumlen;

	usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);

	switch (USB_GET_STATE(xfer)) {
	case USB_ST_TRANSFERRED:
		nx = usbd_aq_getfirst(sc, ne);
		pc = usbd_xfer_get_frame(xfer, 0);
		if (nx == NULL)
			return;

		/* copy in data with regard to the URB */
		if (ne->ne_dirin != 0)
			usbd_copy_out(pc, 0, nx->nx_urbbuf, actlen);
		nx->nx_urbbuf += actlen;
		nx->nx_urbactlen += actlen;
		nx->nx_urblen -= actlen;

		/* check for short transfer */
		if (actlen < sumlen)
			nx->nx_urblen = 0;
		else {
			/* check remainder */
			if (nx->nx_urblen > 0) {
				KeAcquireSpinLock(&ne->ne_lock, &irql);
				InsertHeadList((&ne->ne_active), (&nx->nx_next));
				KeReleaseSpinLock(&ne->ne_lock, irql);

				ip = nx->nx_priv;
				urb = usbd_geturb(ip);
				ubi = &urb->uu_bulkintr;
				ep = ubi->ubi_epdesc;
				goto extra;
			}
		}
		usbd_xfer_complete(sc, ne, nx,
		    ((actlen < sumlen) && (nx->nx_shortxfer == 0)) ?
		    USB_ERR_SHORT_XFER : USB_ERR_NORMAL_COMPLETION);

		/* fall through */
	case USB_ST_SETUP:
next:
		/* get next transfer */
		KeAcquireSpinLock(&ne->ne_lock, &irql);
		if (IsListEmpty(&ne->ne_pending)) {
			KeReleaseSpinLock(&ne->ne_lock, irql);
			return;
		}
		nx = CONTAINING_RECORD(ne->ne_pending.nle_flink,
		    struct ndisusb_xfer, nx_next);
		RemoveEntryList(&nx->nx_next);
		/* add a entry to the active queue's tail.  */
		InsertTailList((&ne->ne_active), (&nx->nx_next));
		KeReleaseSpinLock(&ne->ne_lock, irql);

		ip = nx->nx_priv;
		urb = usbd_geturb(ip);
		ubi = &urb->uu_bulkintr;
		ep = ubi->ubi_epdesc;

		nx->nx_urbbuf		= ubi->ubi_trans_buf;
		nx->nx_urbactlen	= 0;
		nx->nx_urblen		= ubi->ubi_trans_buflen;
		nx->nx_shortxfer	= (ubi->ubi_trans_flags &
		    USBD_SHORT_TRANSFER_OK) ? 1 : 0;
extra:
		len = MIN(usbd_xfer_max_len(xfer), nx->nx_urblen);
		pc = usbd_xfer_get_frame(xfer, 0);
		if (UE_GET_DIR(ep->bEndpointAddress) == UE_DIR_OUT)
			usbd_copy_in(pc, 0, nx->nx_urbbuf, len);
		usbd_xfer_set_frame_len(xfer, 0, len);
		usbd_xfer_set_frames(xfer, 1);
		usbd_transfer_submit(xfer);
		break;
	default:
		nx = usbd_aq_getfirst(sc, ne);
		if (nx == NULL)
			return;
		if (error != USB_ERR_CANCELLED) {
			usbd_xfer_set_stall(xfer);
			device_printf(sc->ndis_dev, "usb xfer warning (%s)\n",
			    usbd_errstr(error));
		}
		usbd_xfer_complete(sc, ne, nx, error);
		if (error != USB_ERR_CANCELLED)
			goto next;
		break;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
			InterlockedDecrement(&LfsDeviceExt->EnabledNetdisk->UnplugInProgressCount);
		}
	}

	//
	// Close files opened by secondary if unmount of primary host is requested .
	// This helps primary can unmount while secondary has mounted.
	//
	if (irpSp->MajorFunction == IRP_MJ_PNP && irpSp->MinorFunction == IRP_MN_QUERY_REMOVE_DEVICE) {
		int i;
		PLIST_ENTRY	primarySessionListEntry;
		PLIST_ENTRY PrimarySessionList;
		POPEN_FILE	openFile;
	    PLIST_ENTRY	OpenFileListEntry;
	    NTSTATUS   closeStatus;
#if DBG
		int j;
		CHAR NameBuf[512] = {0};
#endif		
		PPRIMARY_SESSION primarySession;

		PNETDISK_PARTITION Partition;

		Partition = LookUpNetdiskPartition(LfsDeviceExt->EnabledNetdisk, NULL, 0, LfsDeviceExt, NULL);
		if (Partition) {
			SPY_LOG_PRINT( LFS_DEBUG_LFS_ERROR,	("QUERY_REMOVE: Locking disks for removal\n"));
			InterlockedIncrement(&LfsDeviceExt->EnabledNetdisk->UnplugInProgressCount);
			// wait until DispatchInProgressCount becomes zero
			KeAcquireSpinLock(&LfsDeviceExt->EnabledNetdisk->SpinLock, &oldIrql);
			while(LfsDeviceExt->EnabledNetdisk->DispatchInProgressCount>0) {
				LARGE_INTEGER Timeout;
				SPY_LOG_PRINT( LFS_DEBUG_LFS_ERROR,	("QUERY_REMOVE: %d IO is in progress by secondary\n", LfsDeviceExt->EnabledNetdisk->DispatchInProgressCount));
				Timeout.QuadPart = - HZ/10; // 100ms
				KeReleaseSpinLock(&LfsDeviceExt->EnabledNetdisk->SpinLock, oldIrql);
				KeDelayExecutionThread(KernelMode, FALSE, &Timeout);
				KeAcquireSpinLock(&LfsDeviceExt->EnabledNetdisk->SpinLock, &oldIrql);
			}
			KeReleaseSpinLock(&LfsDeviceExt->EnabledNetdisk->SpinLock, oldIrql);

			NetdiskPartition_Dereference(Partition);		// by LookUpNetdiskPartition
			
		} else {
			SPY_LOG_PRINT( LFS_DEBUG_LFS_ERROR,	("QUERY_REMOVE: Failed to find matching parition\n"));
		}

		for(i=0;i<MAX_SOCKETLPX_INTERFACE;i++) {
			PrimarySessionList = &GlobalLfs.Primary->PrimarySessionQueue[i];

			for (primarySessionListEntry = PrimarySessionList->Flink;
				 primarySessionListEntry != PrimarySessionList;
				 primarySessionListEntry = primarySessionListEntry->Flink)
			{		
				primarySession = CONTAINING_RECORD (primarySessionListEntry, PRIMARY_SESSION, ListEntry);
				if (primarySession->NetdiskPartition == NULL || 
					primarySession->NetdiskPartition->EnabledNetdisk == NULL) {
					SPY_LOG_PRINT( LFS_DEBUG_LFS_INFO,
						("Primary is closed: Session=%p\n",
						primarySession
					));
					continue;
				}
				
				//
				// Is there any way to check to get proper netdisk??
				//
				if (primarySession->NetdiskPartition->EnabledNetdisk == LfsDeviceExt->EnabledNetdisk) {

NDIS_STATUS
ProIndicatePacket(
    PLOGICAL_ADAPTER Adapter,
    PNDIS_PACKET Packet)
/*
 * FUNCTION: Indicates a packet to bound protocols
 * ARGUMENTS:
 *     Adapter = Pointer to logical adapter
 *     Packet  = Pointer to packet to indicate
 * RETURNS:
 *     STATUS_SUCCESS in all cases
 * NOTES:
 *     - XXX ATM, this only handles loopback packets - is that its designed function?
 */
{
  UINT BufferedLength;
  UINT PacketLength;
  KIRQL OldIrql;
  PUCHAR LookaheadBuffer;

  NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));

#if DBG
  MiniDisplayPacket(Packet);
#endif

  NdisQueryPacket(Packet, NULL, NULL, NULL, &PacketLength);

  LookaheadBuffer = ExAllocatePool(NonPagedPool, PacketLength);
  if (!LookaheadBuffer) {
      NDIS_DbgPrint(MIN_TRACE, ("Insufficient resources\n"));
      return NDIS_STATUS_RESOURCES;
  }

  NDIS_DbgPrint(MAX_TRACE, ("acquiring miniport block lock\n"));
  KeAcquireSpinLock(&Adapter->NdisMiniportBlock.Lock, &OldIrql);
    {
      BufferedLength = CopyPacketToBuffer(LookaheadBuffer, Packet, 0, PacketLength);
      Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()] = Packet;
    }
  KeReleaseSpinLock(&Adapter->NdisMiniportBlock.Lock, OldIrql);

  if (BufferedLength > Adapter->MediumHeaderSize)
    {
      /* XXX Change this to call SendPackets so we don't have to duplicate this wacky logic */
      MiniIndicateData(Adapter, NULL, LookaheadBuffer, Adapter->MediumHeaderSize,
          &LookaheadBuffer[Adapter->MediumHeaderSize], BufferedLength - Adapter->MediumHeaderSize,
          PacketLength - Adapter->MediumHeaderSize);
    }
  else
    {
      MiniIndicateData(Adapter, NULL, LookaheadBuffer, Adapter->MediumHeaderSize, NULL, 0, 0);
    }

  ExFreePool(LookaheadBuffer);

  KeAcquireSpinLock(&Adapter->NdisMiniportBlock.Lock, &OldIrql);
    {
      Adapter->NdisMiniportBlock.IndicatedPacket[KeGetCurrentProcessorNumber()] = NULL;
    }
  KeReleaseSpinLock(&Adapter->NdisMiniportBlock.Lock, OldIrql);

  return NDIS_STATUS_SUCCESS;
}