This module provides a layer that combines the decision for local delivery with the service of reversing the direction of an incoming packet to outgoing for packet forwarding.

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Properties

Name	Value	Description
display	i=block/layer

Gates

Name	Direction	Size	Description
upperLayerIn	input
upperLayerOut	output
lowerLayerIn	input
lowerLayerOut	output

Unassigned submodule parameters

Name	Type	Default value	Description
fork.displayStringTextFormat	string	"processed %p pk (%l)"	determines the text that is written on top of the submodule
fork.forwardProtocolRegistration	bool	true
join.displayStringTextFormat	string	"passed %p pk (%l)"	determines the text that is written on top of the submodule
join.forwardServiceRegistration	bool	true

Source code

//
// This module provides a layer that combines the decision for local delivery
// with the service of reversing the direction of an incoming packet to outgoing
// for packet forwarding.
//
module DirectionReverserLayer like IProtocolLayer
{
    parameters:
        @display("i=block/layer");
    gates:
        input upperLayerIn;
        output upperLayerOut;
        input lowerLayerIn;
        output lowerLayerOut;
    submodules:
        cutthroughBarrier: <default("")> like IPacketDelayer {
            @display("p=100,150");
        }
        fork: MessageDispatcher {
            forwardServiceRegistration = false;
            @display("p=100,300;i=-;b=10,10,oval,grey,,1");
        }
        delayer: <default("")> like IPacketDelayer {
            @display("p=300,300");
        }
        reverser: <default("PacketDirectionReverser")> like IPacketFlow {
            @display("p=500,300");
        }
        join: PacketMultiplexer {
            forwardProtocolRegistration = false;
            @display("p=700,300");
        }
    connections:
        upperLayerIn --> { @display("m=n"); } --> join.in++;
        join.out --> { @display("m=s"); } --> lowerLayerOut;

        lowerLayerIn --> { @display("m=s"); } --> fork.in++;
        fork.out++ --> cutthroughBarrier.in;
        cutthroughBarrier.out --> { @display("m=n"); } --> upperLayerOut;

        fork.out++ --> delayer.in;
        delayer.out --> reverser.in;
        reverser.out --> join.in++;
}

File: src/inet/linklayer/ethernet/common/DirectionReverserLayer.ned

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