Exemplos de MTFTP4_PROTOCOL_FROM_THIS em C++ (Cpp)

Exemplo n.º 1

Arquivo: Mtftp4Driver.c Projeto: bhanug/virtualbox

/**
  Destroy one of the service binding's child.

  @param  This                   The service binding instance
  @param  ChildHandle            The child handle to destroy

  @retval EFI_INVALID_PARAMETER  The parameter is invaid.
  @retval EFI_UNSUPPORTED        The child may have already been destroyed.
  @retval EFI_SUCCESS            The child is destroyed and removed from the
                                 parent's child list.

**/
EFI_STATUS
EFIAPI
Mtftp4ServiceBindingDestroyChild (
  IN EFI_SERVICE_BINDING_PROTOCOL *This,
  IN EFI_HANDLE                   ChildHandle
  )
{
  MTFTP4_SERVICE            *MtftpSb;
  MTFTP4_PROTOCOL           *Instance;
  EFI_MTFTP4_PROTOCOL       *Mtftp4;
  EFI_STATUS                Status;
  EFI_TPL                   OldTpl;

  if ((This == NULL) || (ChildHandle == NULL)) {
    return EFI_INVALID_PARAMETER;
  }

  //
  // Retrieve the private context data structures
  //
  Status = gBS->OpenProtocol (
                  ChildHandle,
                  &gEfiMtftp4ProtocolGuid,
                  (VOID **) &Mtftp4,
                  gMtftp4DriverBinding.DriverBindingHandle,
                  ChildHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );

  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Instance  = MTFTP4_PROTOCOL_FROM_THIS (Mtftp4);
  MtftpSb   = MTFTP4_SERVICE_FROM_THIS (This);

  if (Instance->Service != MtftpSb) {
    return EFI_INVALID_PARAMETER;
  }

  if (Instance->InDestroy) {
    return EFI_SUCCESS;
  }

  Instance->InDestroy = TRUE;

  //
  // Close the Udp4 protocol.
  //
  gBS->CloseProtocol (
         MtftpSb->ConnectUdp->UdpHandle,
         &gEfiUdp4ProtocolGuid,
         gMtftp4DriverBinding.DriverBindingHandle,
         ChildHandle
         );

  gBS->CloseProtocol (
         Instance->UnicastPort->UdpHandle,
         &gEfiUdp4ProtocolGuid,
         gMtftp4DriverBinding.DriverBindingHandle,
         ChildHandle
         );

  if (Instance->McastUdpPort != NULL) {
    gBS->CloseProtocol (
           Instance->McastUdpPort->UdpHandle,
           &gEfiUdp4ProtocolGuid,
           gMtftp4DriverBinding.DriverBindingHandle,
           ChildHandle
           );
  }

  //
  // Uninstall the MTFTP4 protocol first to enable a top down destruction.
  //
  Status = gBS->UninstallProtocolInterface (
                  ChildHandle,
                  &gEfiMtftp4ProtocolGuid,
                  Mtftp4
                  );

  if (EFI_ERROR (Status)) {
    Instance->InDestroy = FALSE;
    return Status;
  }

  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);

  Mtftp4CleanOperation (Instance, EFI_DEVICE_ERROR);
  UdpIoFreeIo (Instance->UnicastPort);

  RemoveEntryList (&Instance->Link);
  MtftpSb->ChildrenNum--;

  gBS->RestoreTPL (OldTpl);

  FreePool (Instance);
  return EFI_SUCCESS;
}

Exemplo n.º 2

Arquivo: Mtftp4Driver.c Projeto: Kohrara/edk

EFI_STATUS
Mtftp4ServiceBindingDestroyChild (
  IN EFI_SERVICE_BINDING_PROTOCOL *This,
  IN EFI_HANDLE                   ChildHandle
  )
/*++

Routine Description:

  Destory one of the service binding's child.

Arguments:

  This        - The service binding instance
  ChildHandle - The child handle to destory

Returns:

  EFI_INVALID_PARAMETER - The parameter is invaid.
  EFI_UNSUPPORTED       - The child may have already been destoried.
  EFI_SUCCESS           - The child is destoried and removed from the 
                          parent's child list.

--*/
{
  MTFTP4_SERVICE            *MtftpSb;
  MTFTP4_PROTOCOL           *Instance;
  EFI_MTFTP4_PROTOCOL       *Mtftp4;
  EFI_STATUS                Status;
  EFI_TPL                   OldTpl;

  if ((This == NULL) || (ChildHandle == NULL)) {
    return EFI_INVALID_PARAMETER;
  }
  
  //
  // Retrieve the private context data structures
  //
  Status = gBS->OpenProtocol (
                  ChildHandle,
                  &gEfiMtftp4ProtocolGuid,
                  (VOID **) &Mtftp4,
                  gMtftp4DriverBinding.DriverBindingHandle,
                  ChildHandle,
                  EFI_OPEN_PROTOCOL_GET_PROTOCOL
                  );

  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Instance  = MTFTP4_PROTOCOL_FROM_THIS (Mtftp4);
  MtftpSb   = MTFTP4_SERVICE_FROM_THIS (This);

  if (Instance->Service != MtftpSb) {
    return EFI_INVALID_PARAMETER;
  }

  if (Instance->Indestory) {
    return EFI_SUCCESS;
  }

  Instance->Indestory = TRUE;

  //
  // Close the Udp4 protocol.
  //
  gBS->CloseProtocol (
         MtftpSb->ConnectUdp->UdpHandle,
         &gEfiUdp4ProtocolGuid,
         gMtftp4DriverBinding.DriverBindingHandle,
         ChildHandle
         );

  //
  // Uninstall the MTFTP4 protocol first to enable a top down destruction.
  //
  Status = gBS->UninstallProtocolInterface (
                  ChildHandle,
                  &gEfiMtftp4ProtocolGuid,
                  Mtftp4
                  );

  if (EFI_ERROR (Status)) {
    Instance->Indestory = FALSE;
    return Status;
  }

  OldTpl = NET_RAISE_TPL (NET_TPL_LOCK);
  
  Mtftp4CleanOperation (Instance, EFI_DEVICE_ERROR);
  UdpIoFreePort (Instance->UnicastPort);

  NetListRemoveEntry (&Instance->Link);
  MtftpSb->ChildrenNum--;

  NET_RESTORE_TPL (OldTpl);

  NetFreePool (Instance);
  return EFI_SUCCESS;
}