Loopback

simple module

Loopback interface module implementation.

Used in compound modules

Name	Type	Description
LoopbackInterface	compound module	This module implements a loopback network interface.

Parameters

Name	Type	Default value	Description
interfaceTableModule	string		The path to the InterfaceTable module
mtu	int	4470B

Properties

Name	Value	Description
display	i=block/rxtx

Gates

Name	Direction	Size	Description
upperLayerIn	input
upperLayerOut	output

Signals

Name	Type	Unit
packetReceivedFromUpper	cPacket
packetSentToUpper	cPacket

Statistics

Name	Title	Source	Record	Unit	Interpolation Mode
rcvdPkFromHl	packets received from higher layer	packetReceivedFromUpper	count, sum(packetBytes), vector(packetBytes)		none
passedUpPk	packets passed to higher layer	packetSentToUpper	count, sum(packetBytes), vector(packetBytes)		none

Direct method calls (observed)

call to	function	info
MessageDispatcher	inet::MessageDispatcher::arrived	arrived
InterfaceTable	inet::InterfaceTable::interfaceChanged	interfaceChanged

Called methods (observed)

function	info	call from
inet::Loopback::handleOperationStage	handleOperationStage	ScenarioManager, SimpleEpEnergyManagement, SimpleEpEnergyStorage

Incoming messages (observed)

gate	msg	kind	ctrl	srcModule	tags
upperLayerIn	Packet	0		Ipv4	DispatchProtocolInd, InterfaceReq, NetworkProtocolInd, PacketProtocolTag, MulticastReq?, SocketReq?, TransportProtocolInd?

Outgoing messages (observed)

gate	msg	kind	ctrl	destModule	tags
upperLayerOut	Packet	0		Ipv4	DispatchProtocolReq, InterfaceInd, PacketProtocolTag

Shared Tagging operations (observed)

tagType	tagAction
	clearTags
DispatchProtocolReq	addTag
InterfaceInd	addTag
PacketProtocolTag	addTag, getTag

Source code

//
// Loopback interface module implementation.
//
// @see ~LoopbackInterface
//
simple Loopback
{
    parameters:
        string interfaceTableModule;   // The path to the InterfaceTable module
        int mtu @unit(B) = default(4470B);
        @display("i=block/rxtx");

        @signal[packetSentToUpper](type=cPacket);
        @signal[packetReceivedFromUpper](type=cPacket);
        @statistic[rcvdPkFromHl](title="packets received from higher layer"; source=packetReceivedFromUpper; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);
        @statistic[passedUpPk](title="packets passed to higher layer"; source=packetSentToUpper; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);

    gates:
        input upperLayerIn;
        output upperLayerOut;
}

File: src/inet/linklayer/loopback/Loopback.ned