190 lines
5.5 KiB
C
190 lines
5.5 KiB
C
/*++
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Module Name:
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ioctl.c
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Abstract:
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Handle ioctl for the isoperf driver
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Environment:
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kernel mode only
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Revision History:
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5-4-96 : created
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--*/
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#define DRIVER
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#pragma warning(disable:4214) // bitfield nonstd
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#include "wdm.h"
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#pragma warning(default:4214)
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#include "stdarg.h"
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#include "stdio.h"
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#include "devioctl.h"
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#pragma warning(disable:4200) //non std struct used
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#include "usbdi.h"
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#pragma warning(default:4200)
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#include "usbdlib.h"
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#include "usb.h"
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#include "ioctl.h"
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#include "isoperf.h"
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#include "iso.h"
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NTSTATUS
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ISOPERF_ProcessIOCTL(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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Arguments:
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DeviceObject - pointer to the device object for this instance of the 82930
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devcice.
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Return Value:
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NT status code
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--*/
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{
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PIO_STACK_LOCATION irpStack;
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PVOID ioBuffer;
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ULONG inputBufferLength;
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ULONG outputBufferLength;
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PDEVICE_EXTENSION deviceExtension;
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ULONG ioControlCode;
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NTSTATUS ntStatus = STATUS_SUCCESS;
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ISOPERF_KdPrint_MAXDEBUG (("In ISOPERF_ProcessIoctl (DObj: %x, Irp: %x)\n",DeviceObject, Irp));
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// Get a pointer to the current location in the Irp. This is where
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// the function codes and parameters are located.
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irpStack = IoGetCurrentIrpStackLocation (Irp);
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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// Get a pointer to the device extension
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deviceExtension = DeviceObject->DeviceExtension;
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ISO_ASSERT (deviceExtension != NULL);
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ioBuffer = Irp->AssociatedIrp.SystemBuffer;
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inputBufferLength = irpStack->Parameters.DeviceIoControl.InputBufferLength;
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outputBufferLength = irpStack->Parameters.DeviceIoControl.OutputBufferLength;
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ioControlCode = irpStack->Parameters.DeviceIoControl.IoControlCode;
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ISOPERF_KdPrint_MAXDEBUG (("IRP_MJ_DEVICE_CONTROL\n"));
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ISOPERF_KdPrint_MAXDEBUG (("DeviceObj: %X | DeviceExt: %X\n",DeviceObject, DeviceObject->DeviceExtension));
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ISOPERF_KdPrint_MAXDEBUG (("IOControlCode: %X\n", ioControlCode));
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ISOPERF_KdPrint_MAXDEBUG (("ioBuffer: %x\n",ioBuffer));
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ISOPERF_KdPrint_MAXDEBUG (("inputBufferLength: %x\n",inputBufferLength));
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ISOPERF_KdPrint_MAXDEBUG (("outputBufferLength: %x\n",outputBufferLength));
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//
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// Handle Ioctls from User mode
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//
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switch (ioControlCode) {
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case IOCTL_ISOPERF_START_ISO_IN_TEST:
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ISOPERF_KdPrint_MAXDEBUG(("ISOPERF_START_ISO_IN_TEST\n"));
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if (deviceExtension->Stopped == FALSE) {
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//Iso test routine will set the .information field in the irp
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//Iso test routine will not complete the Irp, so this should do it
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ntStatus = ISOPERF_StartIsoInTest (DeviceObject, Irp);
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// We stomp on the status so the Irp that is doing the Ioctl succeeds.
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// NOTE (kjaff) we may want to put some status here to tell app if ioctl
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// didn't start the test properly.
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Irp->IoStatus.Status = ntStatus = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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}//if device is not stopped
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break;
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case IOCTL_ISOPERF_STOP_ISO_IN_TEST:
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ISOPERF_KdPrint_MAXDEBUG(("ISOPERF_STOP_ISO_IN_TEST\n"));
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ntStatus = ISOPERF_StopIsoInTest (DeviceObject, Irp);
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// We stomp on the status so the Irp that is doing the Ioctl succeeds.
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// NOTE (kjaff) we may want to put some status here to tell app if ioctl
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// didn't start the test properly.
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Irp->IoStatus.Status = ntStatus = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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break;
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case IOCTL_ISOPERF_GET_ISO_IN_STATS:
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if ((ioBuffer!=NULL) && (outputBufferLength>0)) {
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// GetStats function fills in the Irp Information field (nbr of bytes to copy)
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ntStatus = ISOPERF_GetStats (DeviceObject, Irp, ioBuffer, outputBufferLength);
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Irp->IoStatus.Status = ntStatus;
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}else{
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Irp->IoStatus.Status = ntStatus = STATUS_INVALID_PARAMETER;
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Irp->IoStatus.Information = 0;
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}
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break;
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case IOCTL_ISOPERF_SET_DRIVER_CONFIG:
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ISOPERF_KdPrint_MAXDEBUG(("IOCTL_ISOPERF_SET_DRIVER_CONFIG\n"));
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if ((ioBuffer!=NULL) && (inputBufferLength>0)) {
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// SetDriverConfig function fills in the Irp Information field (nbr of bytes to copy)
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ntStatus = ISOPERF_SetDriverConfig (DeviceObject, Irp, ioBuffer, inputBufferLength);
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Irp->IoStatus.Status = ntStatus;
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}else{
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Irp->IoStatus.Status = ntStatus = STATUS_INVALID_PARAMETER;
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Irp->IoStatus.Information = 0;
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}
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break;
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case IOCTL_ISOPERF_WAIT_FOR_ERROR:
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = 0;
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break;
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default:
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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}
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ntStatus = Irp->IoStatus.Status;
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ISOPERF_KdPrint_MAXDEBUG (("Compltng Irp w/ IoStatus.Status=%X | .Inf = %X | ntSt=%X\n",
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Irp->IoStatus.Status, Irp->IoStatus.Information, ntStatus));
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IoCompleteRequest (Irp,
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IO_NO_INCREMENT
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);
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return ntStatus;
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}
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