일반 또는 직접 OID 요청을 처리하기 위한 상용구 예제

이 항목에서는 NDIS 6.80의 동기 OID 요청 인터페이스의 예제와 대조하기 위해 일반 또는 직접 OID 요청을 처리하기 위한 상용구 코드 예제를 제공합니다. 동기 OID 요청 인터페이스는 Windows 10 버전 1709 이상에서 사용할 수 있습니다.

NDIS_STATUS
FilterOidRequest(
  NDIS_HANDLE     FilterModuleContext,
  PNDIS_OID_REQUEST  Request)
{
  PMS_FILTER       pFilter = (PMS_FILTER)FilterModuleContext;

  Status = NdisAllocateCloneOidRequest(pFilter->FilterHandle,
                     Request,
                     FILTER_TAG,
                    &ClonedRequest);
  if (Status != NDIS_STATUS_SUCCESS)
    return Status;

  Context = (PFILTER_REQUEST_CONTEXT)(&ClonedRequest->SourceReserved[0]);
  *Context = Request;

  ClonedRequest->RequestId = Request->RequestId;

  Status = NdisFOidRequest(pFilter->FilterHandle, ClonedRequest);

  if (Status != NDIS_STATUS_PENDING)
  {
    FilterOidRequestComplete(pFilter, ClonedRequest, Status);
    Status = NDIS_STATUS_PENDING;
  }
  return Status;
}

VOID
FilterOidRequestComplete(
  NDIS_HANDLE     FilterModuleContext,
  PNDIS_OID_REQUEST  Request,
  NDIS_STATUS     Status)
{
  PMS_FILTER             pFilter = (PMS_FILTER)FilterModuleContext;
  PNDIS_OID_REQUEST          OriginalRequest;

  Context = (PFILTER_REQUEST_CONTEXT)(&Request->SourceReserved[0]);
  OriginalRequest = (*Context);

  //
  // Copy the information from the returned request to the original request
  //
  switch(Request->RequestType)
  {
    case NdisRequestMethod:
      OriginalRequest->DATA.METHOD_INFORMATION.OutputBufferLength = Request->DATA.METHOD_INFORMATION.OutputBufferLength;
      OriginalRequest->DATA.METHOD_INFORMATION.BytesRead = Request->DATA.METHOD_INFORMATION.BytesRead;
      OriginalRequest->DATA.METHOD_INFORMATION.BytesNeeded = Request->DATA.METHOD_INFORMATION.BytesNeeded;
      OriginalRequest->DATA.METHOD_INFORMATION.BytesWritten = Request->DATA.METHOD_INFORMATION.BytesWritten;
      break;

    case NdisRequestSetInformation:
      OriginalRequest->DATA.SET_INFORMATION.BytesRead = Request->DATA.SET_INFORMATION.BytesRead;
      OriginalRequest->DATA.SET_INFORMATION.BytesNeeded = Request->DATA.SET_INFORMATION.BytesNeeded;
      break;

    case NdisRequestQueryInformation:
    case NdisRequestQueryStatistics:
    default:
      OriginalRequest->DATA.QUERY_INFORMATION.BytesWritten = Request->DATA.QUERY_INFORMATION.BytesWritten;
      OriginalRequest->DATA.QUERY_INFORMATION.BytesNeeded = Request->DATA.QUERY_INFORMATION.BytesNeeded;
      break;
  }

  NdisFreeCloneOidRequest(pFilter->FilterHandle, Request);

  NdisFOidRequestComplete(pFilter->FilterHandle, OriginalRequest, Status);
}