Changes the state of a network interface from "started" to "stopped".
@param This Protocol instance pointer.
@retval EFI_SUCCESS The network interface was stopped.
@retval EFI_ALREADY_STARTED The network interface is already in the stopped state.
@retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value.
@retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
@retval EFI_UNSUPPORTED This function is not supported by the network interface.
Changes the state of a network interface from "started" to "stopped".
@param This Protocol instance pointer.
@retval EFI_SUCCESS The network interface was stopped. @retval EFI_ALREADY_STARTED The network interface is already in the stopped state. @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. @retval EFI_UNSUPPORTED This function is not supported by the network interface.