예제 #1
0
VOID
NdisprotCancelRead(
    IN PDEVICE_OBJECT               pDeviceObject,
    IN PIRP                         pIrp
    )
/*++

Routine Description:

    Cancel a pending read IRP. We unlink the IRP from the open context
    queue and complete it.

Arguments:

    pDeviceObject - pointer to our device object
    pIrp - IRP to be cancelled

Return Value:

    None

--*/
{
    PNDISPROT_OPEN_CONTEXT       pOpenContext;

    UNREFERENCED_PARAMETER(pDeviceObject);

    IoReleaseCancelSpinLock(pIrp->CancelIrql);

    pOpenContext = (PNDISPROT_OPEN_CONTEXT) pIrp->Tail.Overlay.DriverContext[0];
    NPROT_STRUCT_ASSERT(pOpenContext, oc);

    NPROT_ACQUIRE_LOCK(&pOpenContext->Lock, FALSE);

    NPROT_REMOVE_ENTRY_LIST(&pIrp->Tail.Overlay.ListEntry);
    pOpenContext->PendedReadCount--;


    NPROT_RELEASE_LOCK(&pOpenContext->Lock, FALSE);

    DEBUGP(DL_INFO, ("CancelRead: Open %p, IRP %p\n", pOpenContext, pIrp));
    pIrp->IoStatus.Status = STATUS_CANCELLED;
    pIrp->IoStatus.Information = 0;
    IoCompleteRequest(pIrp, IO_NO_INCREMENT);

    NPROT_DEREF_OPEN(pOpenContext); // Cancel removed pended Read

}
예제 #2
0
파일: send.c 프로젝트: kcrazy/winekit
VOID
NdisProtSendComplete(
    IN NDIS_HANDLE                  ProtocolBindingContext,
    IN PNDIS_PACKET                 pNdisPacket,
    IN NDIS_STATUS                  Status
)
/*++

Routine Description:

    NDIS entry point called to signify completion of a packet send.
    We pick up and complete the Write IRP corresponding to this packet.

    NDIS 5.1:

Arguments:

    ProtocolBindingContext - pointer to open context
    pNdisPacket - packet that completed send
    Status - status of send

Return Value:

    None

--*/
{
    PIRP                        pIrp;
    PIO_STACK_LOCATION          pIrpSp;
    PNDISPROT_OPEN_CONTEXT       pOpenContext;

    pOpenContext = (PNDISPROT_OPEN_CONTEXT)ProtocolBindingContext;
    NPROT_STRUCT_ASSERT(pOpenContext, oc);

    pIrp = NPROT_IRP_FROM_SEND_PKT(pNdisPacket);

    if (pOpenContext->bRunningOnWin9x)
    {
        //
        //  We would have attached our own NDIS_BUFFER. Take it out
        //  and free it.
        //
#ifndef NDIS51
        PNDIS_BUFFER                pNdisBuffer;
        PVOID                       VirtualAddr;
        UINT                        BufferLength;
        UINT                        TotalLength;
#endif

#ifdef NDIS51
        NPROT_ASSERT(FALSE); // NDIS 5.1 not on Win9X!
#else
        NdisGetFirstBufferFromPacket(
            pNdisPacket,
            &pNdisBuffer,
            &VirtualAddr,
            &BufferLength,
            &TotalLength);

        NPROT_ASSERT(pNdisBuffer != NULL);
        NdisFreeBuffer(pNdisBuffer);
#endif
    }


#ifdef NDIS51
    IoSetCancelRoutine(pIrp, NULL);

    NPROT_ACQUIRE_LOCK(&pOpenContext->Lock);

    NPROT_REMOVE_ENTRY_LIST(&pIrp->Tail.Overlay.ListEntry);

    NPROT_RELEASE_LOCK(&pOpenContext->Lock);
#endif

    //
    //  We are done with the NDIS_PACKET:
    //
    NPROT_DEREF_SEND_PKT(pNdisPacket);

    //
    //  Complete the Write IRP with the right status.
    //
    pIrpSp = IoGetCurrentIrpStackLocation(pIrp);
    if (Status == NDIS_STATUS_SUCCESS)
    {
        pIrp->IoStatus.Information = pIrpSp->Parameters.Write.Length;
        pIrp->IoStatus.Status = STATUS_SUCCESS;
    }
    else
    {
        pIrp->IoStatus.Information = 0;
        pIrp->IoStatus.Status = STATUS_UNSUCCESSFUL;
    }

    DEBUGP(DL_INFO, ("SendComplete: packet %p/IRP %p/Length %d "
                     "completed with status %x\n",
                     pNdisPacket, pIrp, pIrp->IoStatus.Information, pIrp->IoStatus.Status));

    IoCompleteRequest(pIrp, IO_NO_INCREMENT);

    NdisInterlockedDecrement((PLONG)&pOpenContext->PendedSendCount);

    NPROT_DEREF_OPEN(pOpenContext); // send complete - dequeued send IRP
}
예제 #3
0
VOID
ndisprotQueueReceiveNetBufferList(
    IN PNDISPROT_OPEN_CONTEXT        pOpenContext,
    IN PNET_BUFFER_LIST              pRcvNetBufList,
    IN BOOLEAN                       DispatchLevel
    )
/*++

Routine Description:

    Queue up a received net buffer list on the open context structure.
    If the queue size goes beyond a water mark, discard a Net Buffer list
    at the head of the queue.

    Finally, run the queue service routine.

Arguments:

    pOpenContext - pointer to open context
    pRcvPacket - the received packet
    DipatchLevel - the irql level

Return Value:

    None

--*/
{
    PLIST_ENTRY        pEnt;
    PLIST_ENTRY        pDiscardEnt;
    PNET_BUFFER_LIST   pDiscardNetBufList;

    do
    {

        NPROT_REF_OPEN(pOpenContext);    // queued rcv net buffer list

        NPROT_ACQUIRE_LOCK(&pOpenContext->Lock, DispatchLevel);

        if ((pOpenContext->State == NdisprotPaused)
            || (pOpenContext->State == NdisprotPausing))
        {
            NPROT_RELEASE_LOCK(&pOpenContext->Lock, DispatchLevel);

            ndisprotFreeReceiveNetBufferList(pOpenContext, pRcvNetBufList, DispatchLevel);
            break;
        }

        //
        //  Check if the binding is in the proper state to receive
        //  this net buffer list.
        //
        if (NPROT_TEST_FLAGS(pOpenContext->Flags, NPROTO_BIND_FLAGS, NPROTO_BIND_ACTIVE) &&
            (pOpenContext->PowerState == NetDeviceStateD0))
        {

            //
            // Queue the net buffer list
            //
            pEnt = NPROT_RCV_NBL_TO_LIST_ENTRY(pRcvNetBufList);
            NPROT_INSERT_TAIL_LIST(&pOpenContext->RecvNetBufListQueue, pEnt);
            NPROT_RCV_NBL_FROM_LIST_ENTRY(pEnt) = pRcvNetBufList;
            pOpenContext->RecvNetBufListCount++;

            DEBUGP(DL_VERY_LOUD, ("QueueReceiveNetBufferList: open %p,"
                    " queued nbl %p, queue size %d\n",
                    pOpenContext, pRcvNetBufList, pOpenContext->RecvNetBufListCount));

        }
        else
        {
            //
            //  Received this net buffer list when the binding is going away.
            //  Drop this.
            //
            NPROT_RELEASE_LOCK(&pOpenContext->Lock, DispatchLevel);

            ndisprotFreeReceiveNetBufferList(pOpenContext, pRcvNetBufList, DispatchLevel);

            NPROT_DEREF_OPEN(pOpenContext);  // dropped rcv packet - bad state
            break;
        }


        //
        //  Trim the queue if it has grown too big.
        //
        if (pOpenContext->RecvNetBufListCount > MAX_RECV_QUEUE_SIZE)
        {
            //
            //  Remove the head of the queue.
            //
            pDiscardEnt = pOpenContext->RecvNetBufListQueue.Flink;
            NPROT_REMOVE_ENTRY_LIST(pDiscardEnt);

            pOpenContext->RecvNetBufListCount --;

            NPROT_RELEASE_LOCK(&pOpenContext->Lock, DispatchLevel);

            pDiscardNetBufList = NPROT_RCV_NBL_FROM_LIST_ENTRY(pDiscardEnt);

            NPROT_RCV_NBL_FROM_LIST_ENTRY(pDiscardEnt) = NULL;

            ndisprotFreeReceiveNetBufferList(pOpenContext, pDiscardNetBufList, DispatchLevel);

            NPROT_DEREF_OPEN(pOpenContext);  // dropped rcv packet - queue too long

            DEBUGP(DL_INFO, ("QueueReceiveNetBufferList: open %p queue"
                    " too long, discarded  %p\n",
                    pOpenContext, pDiscardNetBufList));
        }
        else
        {
            NPROT_RELEASE_LOCK(&pOpenContext->Lock, DispatchLevel);
        }

        //
        //  Run the receive queue service routine now.
        //
        ndisprotServiceReads(pOpenContext);
    }
    while (FALSE);
}
예제 #4
0
VOID
ndisprotServiceReads(
    IN PNDISPROT_OPEN_CONTEXT        pOpenContext
    )
/*++

Routine Description:

    Utility routine to copy received data into user buffers and
    complete READ IRPs.

Arguments:

    pOpenContext - pointer to open context

Return Value:

    None

--*/
{
    PIRP                pIrp = NULL;
    PLIST_ENTRY         pIrpEntry;
    PNET_BUFFER_LIST    pRcvNetBufList;
    PLIST_ENTRY         pRcvNetBufListEntry;
    PUCHAR              pSrc, pDst;
    ULONG               BytesRemaining; // at pDst
    PMDL                pMdl;
    ULONG               BytesAvailable;
    BOOLEAN             FoundPendingIrp = FALSE;
    ULONG               SrcTotalLength = 0; // Source NetBuffer DataLenght
    ULONG               Offset = 0;         // CurrentMdlOffset
    ULONG               BytesToCopy = 0;

    DEBUGP(DL_VERY_LOUD, ("ServiceReads: open %p/%x\n",
            pOpenContext, pOpenContext->Flags));

    NPROT_REF_OPEN(pOpenContext);  // temp ref - service reads

    NPROT_ACQUIRE_LOCK(&pOpenContext->Lock, FALSE);

    while (!NPROT_IS_LIST_EMPTY(&pOpenContext->PendedReads) &&
           !NPROT_IS_LIST_EMPTY(&pOpenContext->RecvNetBufListQueue))
    {
        FoundPendingIrp = FALSE;

        //
        //  Get the first pended Read IRP
        //
        pIrpEntry = pOpenContext->PendedReads.Flink;
        while (pIrpEntry != &pOpenContext->PendedReads)
        {
            pIrp = CONTAINING_RECORD(pIrpEntry, IRP, Tail.Overlay.ListEntry);

            //
            //  Check to see if it is being cancelled.
            //
            if (IoSetCancelRoutine(pIrp, NULL))
            {
                //
                //  It isn't being cancelled, and can't be cancelled henceforth.
                //
                NPROT_REMOVE_ENTRY_LIST(pIrpEntry);
                FoundPendingIrp = TRUE;
                break;

                //
                //  NOTE: we decrement PendedReadCount way below in the
                //  while loop, to avoid letting through a thread trying
                //  to unbind.
                //
            }
            else
            {
                //
                //  The IRP is being cancelled; let the cancel routine handle it.
                //
                DEBUGP(DL_INFO, ("ServiceReads: open %p, skipping cancelled IRP %p\n",
                        pOpenContext, pIrp));

                pIrpEntry = pIrpEntry->Flink;
            }
        }

        if (FoundPendingIrp == FALSE)
        {
            break;
        }
        //
        //  Get the first queued receive packet
        //
        pRcvNetBufListEntry = pOpenContext->RecvNetBufListQueue.Flink;
        NPROT_REMOVE_ENTRY_LIST(pRcvNetBufListEntry);

        pOpenContext->RecvNetBufListCount --;

        NPROT_RELEASE_LOCK(&pOpenContext->Lock, FALSE);

        NPROT_DEREF_OPEN(pOpenContext);  // Service: dequeue rcv packet

        pRcvNetBufList = NPROT_RCV_NBL_FROM_LIST_ENTRY(pRcvNetBufListEntry);
        NPROT_ASSERT(pRcvNetBufList != NULL);
        _Analysis_assume_(pRcvNetBufList != NULL);
        NPROT_RCV_NBL_FROM_LIST_ENTRY(pRcvNetBufListEntry) = NULL;

        //
        //  Copy as much data as possible from the receive packet to
        //  the IRP MDL.
        //
        
        pDst = NULL;
        NdisQueryMdl(pIrp->MdlAddress, &pDst, &BytesRemaining, NormalPagePriority);
        NPROT_ASSERT(pDst != NULL);  // since it was already mapped
        _Analysis_assume_(pDst != NULL);

        pMdl = NET_BUFFER_CURRENT_MDL(NET_BUFFER_LIST_FIRST_NB(pRcvNetBufList));

        //
        // Copy the data in the received packet into the buffer provided by the client.
        // If the length of the receive packet is greater than length of the given buffer,
        // we just copy as many bytes as we can. Once the buffer is full, we just discard
        // the rest of the data, and complete the IRP sucessfully even we only did a partial copy.
        //

        SrcTotalLength = NET_BUFFER_DATA_LENGTH(NET_BUFFER_LIST_FIRST_NB(pRcvNetBufList));
        Offset = NET_BUFFER_CURRENT_MDL_OFFSET(NET_BUFFER_LIST_FIRST_NB(pRcvNetBufList));

        while (BytesRemaining && (pMdl != NULL) && SrcTotalLength)
        {
            pSrc = NULL;
            NdisQueryMdl(pMdl, &pSrc, &BytesAvailable, NormalPagePriority);

            if (pSrc == NULL)
            {
                DEBUGP(DL_FATAL,
                    ("ServiceReads: Open %p, NdisQueryMdl failed for MDL %p\n",
                            pOpenContext, pMdl));
                break;
            }

            NPROT_ASSERT(BytesAvailable > Offset);

            BytesToCopy = MIN(BytesAvailable - Offset, BytesRemaining);
            BytesToCopy = MIN(BytesToCopy, SrcTotalLength);

            NPROT_COPY_MEM(pDst, pSrc + Offset, BytesToCopy);
            BytesRemaining -= BytesToCopy;
            pDst += BytesToCopy;
            SrcTotalLength -= BytesToCopy;

            //
            // CurrentMdlOffset is used only for the first Mdl processed. For the remaining Mdls, it is 0.
            //
            Offset = 0;

            NdisGetNextMdl(pMdl, &pMdl);
        }

        //
        //  Complete the IRP.
        //
        pIrp->IoStatus.Status = STATUS_SUCCESS;
        pIrp->IoStatus.Information = MmGetMdlByteCount(pIrp->MdlAddress) - BytesRemaining;

        DEBUGP(DL_INFO, ("ServiceReads: Open %p, IRP %p completed with %d bytes\n",
            pOpenContext, pIrp, (ULONG)pIrp->IoStatus.Information));

        IoCompleteRequest(pIrp, IO_NO_INCREMENT);

        ndisprotFreeReceiveNetBufferList(pOpenContext, pRcvNetBufList,FALSE);


        NPROT_DEREF_OPEN(pOpenContext);    // took out pended Read

        NPROT_ACQUIRE_LOCK(&pOpenContext->Lock, FALSE);
        pOpenContext->PendedReadCount--;

    }

    NPROT_RELEASE_LOCK(&pOpenContext->Lock, FALSE);

    NPROT_DEREF_OPEN(pOpenContext);    // temp ref - service reads
}
예제 #5
0
VOID
ndisprotServiceReads(
    IN PNDISPROT_OPEN_CONTEXT        pOpenContext
    )
/*++

Routine Description:

    Utility routine to copy received data into user buffers and
    complete READ IRPs.

Arguments:

    pOpenContext - pointer to open context

Return Value:

    None

--*/
{
    PIRP                pIrp = NULL;
    PLIST_ENTRY         pIrpEntry;
    PNDIS_PACKET        pRcvPacket;
    PLIST_ENTRY         pRcvPacketEntry;
    PUCHAR              pSrc, pDst;
    ULONG               BytesRemaining; // at pDst
    PNDIS_BUFFER        pNdisBuffer;
    ULONG               BytesAvailable;
    BOOLEAN             FoundPendingIrp;

    DEBUGP(DL_VERY_LOUD, ("ServiceReads: open %p/%x\n",
            pOpenContext, pOpenContext->Flags));

    NPROT_REF_OPEN(pOpenContext);  // temp ref - service reads

    NPROT_ACQUIRE_LOCK(&pOpenContext->Lock);

    while (!NPROT_IS_LIST_EMPTY(&pOpenContext->PendedReads) &&
           !NPROT_IS_LIST_EMPTY(&pOpenContext->RecvPktQueue))
    {
        FoundPendingIrp = FALSE;
        //
        //  Get the first pended Read IRP
        //
        pIrpEntry = pOpenContext->PendedReads.Flink;
        while (pIrpEntry != &pOpenContext->PendedReads)
        {
            pIrp = CONTAINING_RECORD(pIrpEntry, IRP, Tail.Overlay.ListEntry);

            //
            //  Check to see if it is being cancelled.
            //
            if (IoSetCancelRoutine(pIrp, NULL))
            {
                //
                //  It isn't being cancelled, and can't be cancelled henceforth.
                //
                NPROT_REMOVE_ENTRY_LIST(pIrpEntry);
                FoundPendingIrp = TRUE;
                break;

                //
                //  NOTE: we decrement PendedReadCount way below in the
                //  while loop, to avoid letting through a thread trying
                //  to unbind.
                //
            }
            else
            {
                //
                //  The IRP is being cancelled; let the cancel routine handle it.
                //
                DEBUGP(DL_INFO, ("ServiceReads: open %p, skipping cancelled IRP %p\n",
                        pOpenContext, pIrp));
                pIrpEntry = pIrpEntry->Flink;

            }
        }
        //
        // If no pending IRP
        //
        if (FoundPendingIrp == FALSE)
        {
            break;
        }
        //
        //  Get the first queued receive packet
        //
        pRcvPacketEntry = pOpenContext->RecvPktQueue.Flink;
        NPROT_REMOVE_ENTRY_LIST(pRcvPacketEntry);

        pOpenContext->RecvPktCount --;

        NPROT_RELEASE_LOCK(&pOpenContext->Lock);

        NPROT_DEREF_OPEN(pOpenContext);  // Service: dequeue rcv packet

        pRcvPacket = NPROT_LIST_ENTRY_TO_RCV_PKT(pRcvPacketEntry);

        //
        //  Copy as much data as possible from the receive packet to
        //  the IRP MDL.
        //
        pDst = MmGetSystemAddressForMdlSafe(pIrp->MdlAddress, NormalPagePriority);
        __analysis_assume(pDst);
        NPROT_ASSERT(pDst != NULL);  // since it was already mapped
        BytesRemaining = MmGetMdlByteCount(pIrp->MdlAddress);

        pNdisBuffer = NDIS_PACKET_FIRST_NDIS_BUFFER(pRcvPacket);

        //
        // Copy the data in the received packet into the buffer provided by the client.
        // If the length of the receive packet is greater than length of the given buffer, 
        // we just copy as many bytes as we can. Once the buffer is full, we just discard 
        // the rest of the data, and complete the IRP sucessfully even we only did a partial copy.
        // 
        while (BytesRemaining && (pNdisBuffer != NULL))
        {
#ifndef WIN9X
            NdisQueryBufferSafe(pNdisBuffer, &pSrc, &BytesAvailable, NormalPagePriority);

            if (pSrc == NULL) 
            {
                DEBUGP(DL_FATAL,
                    ("ServiceReads: Open %p, QueryBuffer failed for buffer %p\n",
                            pOpenContext, pNdisBuffer));
                break;
            }
#else
            NdisQueryBuffer(pNdisBuffer, &pSrc, &BytesAvailable);
#endif

            if (BytesAvailable)
            {
                ULONG       BytesToCopy = MIN(BytesAvailable, BytesRemaining);

                NPROT_COPY_MEM(pDst, pSrc, BytesToCopy);
                BytesRemaining -= BytesToCopy;
                pDst += BytesToCopy;
            }

            NdisGetNextBuffer(pNdisBuffer, &pNdisBuffer);
        }

        //
        //  Complete the IRP.
        //
        pIrp->IoStatus.Status = STATUS_SUCCESS;
        pIrp->IoStatus.Information = MmGetMdlByteCount(pIrp->MdlAddress) - BytesRemaining;

        DEBUGP(DL_INFO, ("ServiceReads: Open %p, IRP %p completed with %d bytes\n",
            pOpenContext, pIrp, pIrp->IoStatus.Information));

        IoCompleteRequest(pIrp, IO_NO_INCREMENT);

        //
        //  Free up the receive packet - back to the miniport if it
        //  belongs to it, else reclaim it (local copy).
        //
        if (NdisGetPoolFromPacket(pRcvPacket) != pOpenContext->RecvPacketPool)
        {
            NdisReturnPackets(&pRcvPacket, 1);
        }
        else
        {
            ndisprotFreeReceivePacket(pOpenContext, pRcvPacket);
        }

        NPROT_DEREF_OPEN(pOpenContext);    // took out pended Read

        NPROT_ACQUIRE_LOCK(&pOpenContext->Lock);
        pOpenContext->PendedReadCount--;

    }

    NPROT_RELEASE_LOCK(&pOpenContext->Lock);

    NPROT_DEREF_OPEN(pOpenContext);    // temp ref - service reads
}
예제 #6
0
VOID
NdisProtCancelRead(
    IN PDEVICE_OBJECT               pDeviceObject,
    IN PIRP                         pIrp
    )
/*++

Routine Description:

    Cancel a pending read IRP. We unlink the IRP from the open context
    queue and complete it.

Arguments:

    pDeviceObject - pointer to our device object
    pIrp - IRP to be cancelled

Return Value:

    None

--*/
{
    PNDISPROT_OPEN_CONTEXT       pOpenContext;
    PLIST_ENTRY                 pIrpEntry;
    BOOLEAN                     Found;

    UNREFERENCED_PARAMETER(pDeviceObject);
    
    IoReleaseCancelSpinLock(pIrp->CancelIrql);

    Found = FALSE;

    pOpenContext = (PNDISPROT_OPEN_CONTEXT) pIrp->Tail.Overlay.DriverContext[0];
    NPROT_STRUCT_ASSERT(pOpenContext, oc);

    NPROT_ACQUIRE_LOCK(&pOpenContext->Lock);

    //
    //  Locate the IRP in the pended read queue and remove it if found.
    //
    for (pIrpEntry = pOpenContext->PendedReads.Flink;
         pIrpEntry != &pOpenContext->PendedReads;
         pIrpEntry = pIrpEntry->Flink)
    {
        if (pIrp == CONTAINING_RECORD(pIrpEntry, IRP, Tail.Overlay.ListEntry))
        {
            NPROT_REMOVE_ENTRY_LIST(&pIrp->Tail.Overlay.ListEntry);
            pOpenContext->PendedReadCount--;
            Found = TRUE;
            break;
        }
    }

    NPROT_RELEASE_LOCK(&pOpenContext->Lock);

    if (Found)
    {
        DEBUGP(DL_INFO, ("CancelRead: Open %p, IRP %p\n", pOpenContext, pIrp));
        pIrp->IoStatus.Status = STATUS_CANCELLED;
        pIrp->IoStatus.Information = 0;
        IoCompleteRequest(pIrp, IO_NO_INCREMENT);

        NPROT_DEREF_OPEN(pOpenContext); // Cancel removed pended Read
    }
}
예제 #7
0
VOID
NdisprotSendComplete(
    IN NDIS_HANDLE                  ProtocolBindingContext,
    IN PNET_BUFFER_LIST             pNetBufferList,
    IN ULONG                        SendCompleteFlags
    )
/*++

Routine Description:

    NDIS entry point called to signify completion of a packet send.
    We pick up and complete the Write IRP corresponding to this packet.

Arguments:

    ProtocolBindingContext - pointer to open context
    pNetBufferList - NetBufferList that completed send
    SendCompleteFlags - Specifies if the caller is at DISPATCH level

Return Value:

    None

--*/
{
    PIRP                        pIrp;
    PIO_STACK_LOCATION          pIrpSp;
    PNDISPROT_OPEN_CONTEXT      pOpenContext;
    PNET_BUFFER_LIST            CurrNetBufferList = NULL;
    PNET_BUFFER_LIST            NextNetBufferList;
    NDIS_STATUS                 CompletionStatus;
    BOOLEAN                     DispatchLevel;

    pOpenContext = (PNDISPROT_OPEN_CONTEXT)ProtocolBindingContext;
    NPROT_STRUCT_ASSERT(pOpenContext, oc);
    DispatchLevel = NDIS_TEST_SEND_AT_DISPATCH_LEVEL(SendCompleteFlags);

    for (CurrNetBufferList = pNetBufferList;
            CurrNetBufferList != NULL;
            CurrNetBufferList = NextNetBufferList)
    {
        NextNetBufferList = NET_BUFFER_LIST_NEXT_NBL(CurrNetBufferList);
        
        pIrp = NPROT_IRP_FROM_SEND_NBL(CurrNetBufferList);

        IoAcquireCancelSpinLock(&pIrp->CancelIrql);
        IoSetCancelRoutine(pIrp, NULL);
        pIrp->Tail.Overlay.DriverContext[0] = NULL;
        pIrp->Tail.Overlay.DriverContext[1] = NULL;
        IoReleaseCancelSpinLock(pIrp->CancelIrql);

        NPROT_ACQUIRE_LOCK(&pOpenContext->Lock, DispatchLevel);

        NPROT_REMOVE_ENTRY_LIST(&pIrp->Tail.Overlay.ListEntry);

        NPROT_RELEASE_LOCK(&pOpenContext->Lock, DispatchLevel);
        
        CompletionStatus = NET_BUFFER_LIST_STATUS(CurrNetBufferList);
        
        
        //
        //  We are done with the NDIS_PACKET:
        //
        NPROT_DEREF_SEND_NBL(CurrNetBufferList, DispatchLevel);

        //
        //  Complete the Write IRP with the right status.
        //
        pIrpSp = IoGetCurrentIrpStackLocation(pIrp);
        if (CompletionStatus == NDIS_STATUS_SUCCESS)
        {
            pIrp->IoStatus.Information = pIrpSp->Parameters.Write.Length;
            pIrp->IoStatus.Status = STATUS_SUCCESS;
        }
        else
        {
            pIrp->IoStatus.Information = 0;
            pIrp->IoStatus.Status = STATUS_UNSUCCESSFUL;
        }

        DEBUGP(DL_INFO, ("SendComplete: NetBufferList %p/IRP %p/Length %d "
                        "completed with status %x\n",
                        CurrNetBufferList, pIrp, pIrp->IoStatus.Information, pIrp->IoStatus.Status));

        IoCompleteRequest(pIrp, IO_NO_INCREMENT);

        NPROT_ACQUIRE_LOCK(&pOpenContext->Lock, DispatchLevel);
        pOpenContext->PendedSendCount--;

        if ((NPROT_TEST_FLAGS(pOpenContext->Flags, NPROTO_BIND_FLAGS, NPROTO_BIND_CLOSING))
                && (pOpenContext->PendedSendCount == 0))
        {
            ASSERT(pOpenContext->ClosingEvent != NULL);
            NPROT_SIGNAL_EVENT(pOpenContext->ClosingEvent);
            pOpenContext->ClosingEvent = NULL;
        }
        NPROT_RELEASE_LOCK(&pOpenContext->Lock, DispatchLevel);

        NPROT_DEREF_OPEN(pOpenContext); // send complete - dequeued send IRP
    }
    
}