Exemplo de clichê para lidar com solicitações OID regulares ou diretas

Este tópico fornece um exemplo de código clichê para lidar com solicitações OID regulares ou diretas, para contrastar com os exemplos em Synchronous OID Request Interface no NDIS 6.80. A interface de solicitação OID síncrona está disponível no Windows 10, versão 1709 e posterior.

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);
}