+ Status = gBS->OpenProtocol (\r
+ Instance->UdpIo->UdpHandle,\r
+ &gEfiUdp4ProtocolGuid,\r
+ (VOID **) &Udp4,\r
+ Instance->Service->Image,\r
+ Instance->Handle,\r
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ UdpIoFreeIo (Instance->UdpIo);\r
+ Instance->UdpIo = NULL;\r
+ }\r
+ return Status;\r