763 lines
24 KiB
C
763 lines
24 KiB
C
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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ioctl.c
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Abstract:
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This is the main file for handling DevIOCtl calls for AsyncMAC.
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This driver conforms to the NDIS 3.0 interface.
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Author:
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Thomas J. Dimitri (TommyD) 08-May-1992
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Environment:
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Kernel Mode - Or whatever is the equivalent on OS/2 and DOS.
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Revision History:
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--*/
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#include "asyncall.h"
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#ifdef NDIS_NT
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#include <ntiologc.h>
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#endif
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// asyncmac.c will define the global parameters.
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VOID
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AsyncSendLineUp(
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PASYNC_INFO pInfo
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)
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{
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PASYNC_ADAPTER pAdapter = pInfo->Adapter;
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NDIS_MAC_LINE_UP MacLineUp;
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//
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// divide the baud by 100 because NDIS wants it in 100s of bits per sec
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//
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MacLineUp.LinkSpeed = pInfo->LinkSpeed / 100;
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MacLineUp.Quality = pInfo->QualOfConnect;
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MacLineUp.SendWindow = ASYNC_WINDOW_SIZE;
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MacLineUp.ConnectionWrapperID = pInfo;
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MacLineUp.NdisLinkHandle = pInfo;
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MacLineUp.NdisLinkContext = pInfo->NdisLinkContext;
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//
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// Tell the transport above (or really RasHub) that the connection
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// is now up. We have a new link speed, frame size, quality of service
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//
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NdisMIndicateStatus(pAdapter->MiniportHandle,
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NDIS_STATUS_WAN_LINE_UP, // General Status.
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&MacLineUp, // (baud rate in 100 bps).
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sizeof(NDIS_MAC_LINE_UP));
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//
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// Get the next binding (in case of multiple bindings like BloodHound)
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//
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pInfo->NdisLinkContext = MacLineUp.NdisLinkContext;
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}
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NTSTATUS
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AsyncIOCtlRequest(
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IN PIRP pIrp,
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IN PIO_STACK_LOCATION pIrpSp
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)
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/*++
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Routine Description:
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This routine takes an irp and checks to see if the IOCtl
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is a valid one. If so, it performs the IOCtl and returns
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any errors in the process.
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Return Value:
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The function value is the final status of the IOCtl.
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--*/
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{
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NTSTATUS status;
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ULONG funcCode;
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PVOID pBufOut;
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ULONG InBufLength, OutBufLength;
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NDIS_HANDLE hNdisEndPoint;
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PASYMAC_CLOSE pCloseStruct;
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PASYMAC_OPEN pOpenStruct;
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PASYMAC_DCDCHANGE pDCDStruct;
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PASYNC_ADAPTER Adapter;
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LARGE_INTEGER li ;
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//
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// Initialize locals.
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//
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status = STATUS_SUCCESS;
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//
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// Initialize the I/O Status block
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//
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InBufLength = pIrpSp->Parameters.DeviceIoControl.InputBufferLength;
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OutBufLength = pIrpSp->Parameters.DeviceIoControl.OutputBufferLength;
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funcCode = pIrpSp->Parameters.DeviceIoControl.IoControlCode;
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//
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// Validate the function code
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//
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#ifdef MY_DEVICE_OBJECT
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if ( (funcCode >> 16) != FILE_DEVICE_ASYMAC ) {
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return STATUS_INVALID_PARAMETER;
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}
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#else
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if ( (funcCode >> 16) != FILE_DEVICE_NETWORK ) {
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return STATUS_INVALID_PARAMETER;
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}
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#endif
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//
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// Get a quick ptr to the IN/OUT SystemBuffer
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//
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pBufOut = pIrp->AssociatedIrp.SystemBuffer;
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switch ( funcCode ) {
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case IOCTL_ASYMAC_OPEN:
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DbgTracef(0,("AsyncIOCtlRequest: IOCTL_ASYMAC_OPEN.\n"));
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pIrp->IoStatus.Information = sizeof(ASYMAC_OPEN);
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if (InBufLength >= sizeof(ASYMAC_OPEN) &&
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OutBufLength >= sizeof(ASYMAC_OPEN)) {
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pOpenStruct = pBufOut;
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} else {
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status = STATUS_INFO_LENGTH_MISMATCH;
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}
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break;
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case IOCTL_ASYMAC_CLOSE:
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DbgTracef(0,("AsyncIOCtlRequest: IOCTL_ASYMAC_CLOSE\n"));
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if ( InBufLength >= sizeof(ASYMAC_CLOSE) ) {
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pCloseStruct = pBufOut;
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} else {
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status = STATUS_INFO_LENGTH_MISMATCH;
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}
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break;
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case IOCTL_ASYMAC_TRACE:
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#if DBG
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DbgPrint("AsyncIOCtlRequest: IOCTL_ASYMAC_TRACE.\n");
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if ( InBufLength >= sizeof(TraceLevel) ) {
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CHAR *pTraceLevel=pBufOut;
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TraceLevel=*pTraceLevel;
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} else {
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status = STATUS_INFO_LENGTH_MISMATCH;
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}
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#endif
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return status;
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break;
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case IOCTL_ASYMAC_DCDCHANGE:
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DbgTracef(0,("AsyncIOCtlRequest: IOCTL_ASYMAC_DCDCHANGE.\n"));
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if ( InBufLength >= sizeof(ASYMAC_DCDCHANGE) ) {
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pDCDStruct = pBufOut;
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} else {
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status = STATUS_INFO_LENGTH_MISMATCH;
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}
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break;
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default:
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status = STATUS_INVALID_DEVICE_REQUEST;
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}
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//
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// Check if we already have an error (like STATUS_INFO_LENGTH_MISMATCH).
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//
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if ( status != STATUS_SUCCESS ) {
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return status;
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}
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//
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// Since most of IOCTL structs are similar
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// we get the Adapter and hNdisEndPoint here using
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// the StatsStruct (we could several of them)
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//
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pOpenStruct = pBufOut;
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hNdisEndPoint = pOpenStruct->hNdisEndpoint;
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//
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// No error yet, let's go ahead and grab the global lock...
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//
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if ((Adapter = GlobalAdapter) == NULL ) {
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return ASYNC_ERROR_NO_ADAPTER;
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}
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// there's a race condition right here that I am
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// not bothering to get rid of because it would
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// require the removal of this adapter in between
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// here (which is, for all intensive purposes, impossible).
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// Hmm... now that we have the lock we can do stuff
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NdisAcquireSpinLock(&Adapter->Lock);
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// Here we do the real work for the function call
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switch ( funcCode ) {
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case IOCTL_ASYMAC_OPEN:
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{
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PASYNC_INFO pNewInfo = NULL;
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USHORT i;
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PDEVICE_OBJECT deviceObject;
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PFILE_OBJECT fileObject;
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OBJECT_HANDLE_INFORMATION handleInformation;
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//
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// Get a new AsyncInfo
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//
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pNewInfo = (PASYNC_INFO)
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ExAllocateFromNPagedLookasideList(&AsyncInfoList);
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//
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// Check if we could not find an open port
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//
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if ( pNewInfo == NULL ) {
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NdisReleaseSpinLock(&Adapter->Lock);
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return ASYNC_ERROR_NO_PORT_AVAILABLE;
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}
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RtlZeroMemory(pNewInfo, sizeof(ASYNC_INFO));
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pNewInfo->Adapter = Adapter;
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status =
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AsyncGetFrameFromPool(pNewInfo, &pNewInfo->AsyncFrame);
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if (status != NDIS_STATUS_SUCCESS) {
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ExFreeToNPagedLookasideList(&AsyncInfoList, pNewInfo);
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NdisReleaseSpinLock(&Adapter->Lock);
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return ASYNC_ERROR_NO_PORT_AVAILABLE;
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}
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KeInitializeEvent(&pNewInfo->DetectEvent,
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SynchronizationEvent,
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TRUE);
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// increment the reference count (don't kill this adapter)
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InterlockedIncrement(&Adapter->RefCount);
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// release spin lock so we can do some real work.
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NdisReleaseSpinLock(&Adapter->Lock);
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//
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// Reference the file object so the target device can be found and
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// the access rights mask can be used in the following checks for
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// callers in user mode. Note that if the handle does not refer to
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// a file object, then it will fail.
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//
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status = ObReferenceObjectByHandle(pOpenStruct->FileHandle,
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FILE_READ_DATA | FILE_WRITE_DATA,
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*IoFileObjectType,
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UserMode,
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(PVOID) &fileObject,
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&handleInformation);
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if (!NT_SUCCESS(status)) {
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pNewInfo->PortState = PORT_CLOSED;
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NdisAcquireSpinLock(&Adapter->Lock);
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// RemoveEntryList(&pNewInfo->Linkage);
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ExFreeToNPagedLookasideList(&Adapter->AsyncFrameList,
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pNewInfo->AsyncFrame);
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NdisReleaseSpinLock(&Adapter->Lock);
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ExFreeToNPagedLookasideList(&AsyncInfoList,
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pNewInfo);
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return ASYNC_ERROR_NO_PORT_AVAILABLE;
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}
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//
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// Init the portinfo block
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//
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InitializeListHead(&pNewInfo->DDCDQueue);
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// Ok, we've gotten this far. We have a port.
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// Own port, and check params...
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// Nothing can be done to the port until it comes
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// out of the PORT_OPENING state.
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pNewInfo->PortState = PORT_OPENING;
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NdisAllocateSpinLock(&pNewInfo->Lock);
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//
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// Get the address of the target device object. Note that this was already
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// done for the no intermediate buffering case, but is done here again to
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// speed up the turbo write path.
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//
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deviceObject = IoGetRelatedDeviceObject(fileObject);
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ObReferenceObject(deviceObject);
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// ok, we have a VALID handle of *something*
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// we do NOT assume that the handle is anything
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// in particular except a device which accepts
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// non-buffered IO (no MDLs) Reads and Writes
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// set new info...
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pNewInfo->Handle = pOpenStruct->FileHandle;
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//
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// Tuck away link speed for line up
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// and timeouts
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//
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pNewInfo->LinkSpeed = pOpenStruct->LinkSpeed;
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//
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// Return endpoint to RASMAN
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//
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pOpenStruct->hNdisEndpoint =
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pNewInfo->hNdisEndPoint = pNewInfo;
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// Get parameters set from Registry and return our capabilities
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pNewInfo->QualOfConnect = pOpenStruct->QualOfConnect;
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pNewInfo->PortState = PORT_FRAMING;
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pNewInfo->FileObject = fileObject;
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pNewInfo->DeviceObject = deviceObject;
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pNewInfo->NdisLinkContext = NULL;
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//
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// Initialize the NDIS_WAN_GET_LINK_INFO structure.
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//
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pNewInfo->GetLinkInfo.MaxSendFrameSize = DEFAULT_PPP_MAX_FRAME_SIZE;
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pNewInfo->GetLinkInfo.MaxRecvFrameSize = DEFAULT_PPP_MAX_FRAME_SIZE;
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pNewInfo->GetLinkInfo.HeaderPadding = DEFAULT_PPP_MAX_FRAME_SIZE;
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pNewInfo->GetLinkInfo.TailPadding = 4;
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pNewInfo->GetLinkInfo.SendFramingBits = PPP_FRAMING;
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pNewInfo->GetLinkInfo.RecvFramingBits = PPP_FRAMING;
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pNewInfo->GetLinkInfo.SendCompressionBits = 0;
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pNewInfo->GetLinkInfo.RecvCompressionBits = 0;
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pNewInfo->GetLinkInfo.SendACCM = (ULONG) -1;
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pNewInfo->GetLinkInfo.RecvACCM = (ULONG) -1;
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ASYNC_ZERO_MEMORY(&(pNewInfo->SerialStats), sizeof(SERIAL_STATS));
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NdisAcquireSpinLock(&Adapter->Lock);
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InsertHeadList(&Adapter->ActivePorts, &pNewInfo->Linkage);
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NdisReleaseSpinLock(&Adapter->Lock);
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//
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// Send a line up to the WAN wrapper.
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//
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AsyncSendLineUp(pNewInfo);
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//
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// We send a special IRP to the serial driver to set it in RAS friendly mode
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// where it will not complete write requests until the packet has been transmitted
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// on the wire. This is mostly important in case of intelligent controllers.
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//
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pNewInfo->WaitMaskToUse =
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(SERIAL_EV_RXFLAG | SERIAL_EV_RLSD | SERIAL_EV_DSR |
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SERIAL_EV_RX80FULL | SERIAL_EV_ERR) ;
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{
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NTSTATUS status;
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PASYNC_IO_CTX AsyncIoCtx;
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PIRP irp;
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irp =
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IoAllocateIrp(pNewInfo->DeviceObject->StackSize, (BOOLEAN)FALSE);
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if (irp != NULL) {
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AsyncIoCtx = AsyncAllocateIoCtx(TRUE, pNewInfo);
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if (AsyncIoCtx == NULL) {
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IoFreeIrp(irp);
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irp = NULL;
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}
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}
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if (irp != NULL) {
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#define IOCTL_SERIAL_PRIVATE_RAS CTL_CODE(FILE_DEVICE_SERIAL_PORT,4000,METHOD_BUFFERED,FILE_ANY_ACCESS)
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InitSerialIrp(irp,
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pNewInfo,
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IOCTL_SERIAL_PRIVATE_RAS,
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sizeof(ULONG));
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AsyncIoCtx->WriteBufferingEnabled =
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Adapter->WriteBufferingEnabled;
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irp->AssociatedIrp.SystemBuffer=
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&AsyncIoCtx->WriteBufferingEnabled;
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IoSetCompletionRoutine(irp, // irp to use
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SerialIoSyncCompletionRoutine, // routine to call when irp is done
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AsyncIoCtx, // context to pass routine
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TRUE, // call on success
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TRUE, // call on error
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TRUE); // call on cancel
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// Now simply invoke the driver at its dispatch entry with the IRP.
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//
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KeClearEvent(&AsyncIoCtx->Event);
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status = IoCallDriver(pNewInfo->DeviceObject, irp);
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if (status == STATUS_PENDING) {
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KeWaitForSingleObject(&AsyncIoCtx->Event,
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Executive,
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KernelMode,
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FALSE,
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NULL);
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status = AsyncIoCtx->IoStatus.Status;
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}
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IoFreeIrp(irp);
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AsyncFreeIoCtx(AsyncIoCtx);
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if (status == STATUS_SUCCESS) {
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//
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// this means that the driver below is DIGI. we should disable setting of the EV_ERR
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// flags in this case.
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//
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pNewInfo->WaitMaskToUse &= ~SERIAL_EV_ERR;
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}
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}
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}
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//
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// Start the detect framing out with a 6 byte read to get the header
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//
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pNewInfo->BytesWanted=6;
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pNewInfo->BytesRead=0;
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//
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// Start reading.
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//
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AsyncStartReads(pNewInfo);
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if (NdisInterlockedIncrement(&glConnectionCount) == 1) {
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ObReferenceObject(AsyncDeviceObject);
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}
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break;
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}
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case IOCTL_ASYMAC_TRACE:
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NdisReleaseSpinLock(&Adapter->Lock);
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status = STATUS_SUCCESS;
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break;
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case IOCTL_ASYMAC_CLOSE:
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case IOCTL_ASYMAC_DCDCHANGE:
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{
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PASYNC_INFO pNewInfo; // ptr to open port if found
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USHORT i;
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PLIST_ENTRY pListEntry;
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BOOLEAN Valid = FALSE;
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switch (funcCode) {
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case IOCTL_ASYMAC_CLOSE:
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{
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NDIS_MAC_LINE_DOWN AsyncLineDown;
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pNewInfo = (PASYNC_INFO)pCloseStruct->hNdisEndpoint;
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// Verify that the pointer is a valid ASYNC_INFO
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for (pListEntry=Adapter->ActivePorts.Flink;
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pListEntry!=&Adapter->ActivePorts;
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pListEntry=pListEntry->Flink)
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{
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if (&pNewInfo->Linkage==pListEntry)
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{
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Valid = TRUE;
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break;
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}
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}
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if (!Valid) {
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status=ASYNC_ERROR_PORT_NOT_FOUND;
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break;
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}
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// release spin lock so we can do some real work.
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NdisReleaseSpinLock(&Adapter->Lock);
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NdisAcquireSpinLock(&pNewInfo->Lock);
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// ASSERT(pNewInfo->PortState == PORT_FRAMING);
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if(pNewInfo->PortState != PORT_FRAMING)
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{
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KdPrint(("AsyncIOCtlRequest: IOCTL_ASYMAC_CLOSE."));
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KdPrint(("PortState = %d != PORT_FRAMING\n", pNewInfo->PortState));
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NdisReleaseSpinLock(&pNewInfo->Lock);
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return ASYNC_ERROR_PORT_BAD_STATE;
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// break;
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}
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AsyncLineDown.NdisLinkContext = pNewInfo->NdisLinkContext;
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// Signal that port is closing.
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pNewInfo->PortState = PORT_CLOSING;
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//Set MUTEX to wait on
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KeInitializeEvent(&pNewInfo->ClosingEvent, // Event
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SynchronizationEvent, // Event type
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(BOOLEAN)FALSE); // Not signalled state
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NdisReleaseSpinLock(&pNewInfo->Lock);
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//
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// If we have an outstanding Detect worker
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// wait for it to complete!
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//
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KeWaitForSingleObject(&pNewInfo->DetectEvent,
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UserRequest,
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KernelMode,
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FALSE,
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NULL);
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//
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// now we must send down an IRP do cancel
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// any request pending in the serial driver
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//
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CancelSerialRequests(pNewInfo);
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//
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// Also, cancel any outstanding DDCD irps
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//
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AsyncCancelAllQueued(&pNewInfo->DDCDQueue);
|
|
|
|
// Synchronize closing with the read irp
|
|
|
|
li.LowPart = 5000 ;
|
|
li.HighPart = 0 ;
|
|
|
|
if (KeWaitForSingleObject (&pNewInfo->ClosingEvent,// PVOID Object,
|
|
UserRequest, // KWAIT_REASON WaitReason,
|
|
KernelMode, // KPROCESSOR_MODE WaitMode,
|
|
(BOOLEAN)FALSE, // BOOLEAN Alertable,
|
|
&li) == STATUS_TIMEOUT) {
|
|
|
|
// If the wait fails cause another flush
|
|
//
|
|
NTSTATUS status;
|
|
PIRP irp;
|
|
PASYNC_IO_CTX AsyncIoCtx;
|
|
|
|
irp=
|
|
IoAllocateIrp(pNewInfo->DeviceObject->StackSize, (BOOLEAN)FALSE);
|
|
|
|
if (irp == NULL)
|
|
goto DEREF ;
|
|
|
|
|
|
AsyncIoCtx = AsyncAllocateIoCtx(TRUE, pNewInfo);
|
|
|
|
if (AsyncIoCtx == NULL) {
|
|
IoFreeIrp(irp);
|
|
goto DEREF;
|
|
}
|
|
|
|
InitSerialIrp(irp,
|
|
pNewInfo,
|
|
IOCTL_SERIAL_PURGE,
|
|
sizeof(ULONG));
|
|
|
|
// kill all read and write threads.
|
|
AsyncIoCtx->SerialPurge =
|
|
SERIAL_PURGE_TXABORT | SERIAL_PURGE_RXABORT;
|
|
|
|
irp->AssociatedIrp.SystemBuffer=
|
|
&AsyncIoCtx->SerialPurge;
|
|
|
|
IoSetCompletionRoutine(irp, // irp to use
|
|
SerialIoSyncCompletionRoutine, // routine to call when irp is done
|
|
AsyncIoCtx, // context to pass routine
|
|
TRUE, // call on success
|
|
TRUE, // call on error
|
|
TRUE); // call on cancel
|
|
|
|
// Now simply invoke the driver at its dispatch entry with the IRP.
|
|
//
|
|
KeClearEvent(&AsyncIoCtx->Event);
|
|
status = IoCallDriver(pNewInfo->DeviceObject, irp);
|
|
|
|
if (status == STATUS_PENDING) {
|
|
KeWaitForSingleObject(&AsyncIoCtx->Event,
|
|
Executive,
|
|
KernelMode,
|
|
FALSE,
|
|
NULL);
|
|
status = AsyncIoCtx->IoStatus.Status;
|
|
}
|
|
|
|
IoFreeIrp(irp);
|
|
AsyncFreeIoCtx(AsyncIoCtx);
|
|
|
|
// if we do hit this code - wait for some time to let
|
|
// the read complete
|
|
//
|
|
KeDelayExecutionThread (KernelMode, FALSE, &li) ;
|
|
}
|
|
|
|
|
|
//
|
|
// Get rid of our reference to the serial port
|
|
//
|
|
DEREF:
|
|
ObDereferenceObject(pNewInfo->DeviceObject);
|
|
|
|
ObDereferenceObject(pNewInfo->FileObject);
|
|
|
|
NdisMIndicateStatus(Adapter->MiniportHandle,
|
|
NDIS_STATUS_WAN_LINE_DOWN, // General Status
|
|
&AsyncLineDown, // Specific Status
|
|
sizeof(NDIS_MAC_LINE_DOWN));
|
|
|
|
// reacquire spin lock
|
|
NdisAcquireSpinLock(&Adapter->Lock);
|
|
|
|
RemoveEntryList(&pNewInfo->Linkage);
|
|
|
|
// decrement the reference count because we're done.
|
|
InterlockedDecrement(&Adapter->RefCount);
|
|
|
|
pNewInfo->PortState = PORT_CLOSED;
|
|
|
|
NdisFreeSpinLock(&pNewInfo->Lock);
|
|
|
|
ExFreeToNPagedLookasideList(&Adapter->AsyncFrameList,
|
|
pNewInfo->AsyncFrame);
|
|
|
|
ExFreeToNPagedLookasideList(&AsyncInfoList,
|
|
pNewInfo);
|
|
|
|
if (NdisInterlockedDecrement(&glConnectionCount) == 0) {
|
|
ObDereferenceObject(AsyncDeviceObject);
|
|
}
|
|
|
|
break; // get out of case statement
|
|
}
|
|
|
|
case IOCTL_ASYMAC_DCDCHANGE:
|
|
|
|
pNewInfo = (PASYNC_INFO)pDCDStruct->hNdisEndpoint;
|
|
|
|
// Verify that the pointer is a valid ASYNC_INFO
|
|
for (pListEntry=Adapter->ActivePorts.Flink;
|
|
pListEntry!=&Adapter->ActivePorts;
|
|
pListEntry=pListEntry->Flink)
|
|
{
|
|
if (&pNewInfo->Linkage==pListEntry)
|
|
{
|
|
Valid = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If the port is already closed, we WILL complain
|
|
//
|
|
if (!Valid || pNewInfo->PortState == PORT_CLOSED) {
|
|
status=ASYNC_ERROR_PORT_NOT_FOUND;
|
|
break;
|
|
}
|
|
|
|
//
|
|
// If any irps are pending, cancel all of them
|
|
// Only one irp can be outstanding at a time.
|
|
//
|
|
AsyncCancelAllQueued(&pNewInfo->DDCDQueue);
|
|
|
|
DbgTracef(0, ("ASYNC: Queueing up DDCD IRP\n"));
|
|
|
|
AsyncQueueIrp(&pNewInfo->DDCDQueue, pIrp);
|
|
|
|
//
|
|
// we'll have to wait for the SERIAL driver
|
|
// to flip DCD or DSR
|
|
//
|
|
status=STATUS_PENDING;
|
|
break;
|
|
|
|
} // end switch
|
|
|
|
NdisReleaseSpinLock(&Adapter->Lock);
|
|
return(status);
|
|
}
|
|
break;
|
|
|
|
} // end switch
|
|
|
|
return status;
|
|
}
|