GetDevicePathSize
return GetDevicePathSize(__DECONST(EFI_DEVICE_PATH_PROTOCOL *, dp));
len = GetDevicePathSize(dp);
Size = GetDevicePathSize (DevicePath);
Size1 = GetDevicePathSize (FirstDevicePath);
Size2 = GetDevicePathSize (SecondDevicePath);
SrcSize = GetDevicePathSize (DevicePath);
InstanceSize = GetDevicePathSize (DevicePathInstance);