BridgingLayer¶

compound module BridgingLayer

Provides various layer 2 services such as packet forwarding, interface selection, virtual LAN handling, stream handling.

Usage diagram¶

Inheritance diagram¶

Parameters¶

Name	Type	Default value	Description
macTableModule	string	“”
interfaceTableModule	string		Relative module path of the interface table

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
directionReverser.fork.displayStringTextFormat	string	“processed {numProcessedPackets} pk ({processedTotalLength})”	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
directionReverser.fork.interfaceTableModule	string		Module path to the InterfaceTable module
directionReverser.fork.forwardProtocolRegistration	bool	true
directionReverser.fork.interfaceMapping	object	{}	Maps network interface names to connected submodule names (e.g. {“eth0”: “bridging”}), overrides automatically learned dispatching; * overrides all learned network interfaces, ? overrides default
directionReverser.fork.serviceMapping	object	{}	Maps protocols to connected submodule names (e.g. {“ethernetmac”: “bridging”}), overrides automatically learned dispatching; * overrides all learned services, ? overrides default
directionReverser.fork.protocolMapping	object	{}	Maps protocols to connected submodule names (e.g. {“ipv4”: “bridging”}), overrides automatically learned dispatching; * overrides all learned protocols, ? overrides default
directionReverser.reverser.displayStringTextFormat	string	“processed {numProcessedPackets} pk ({processedTotalLength})”	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
directionReverser.reverser.forwardVlan	bool	true
directionReverser.reverser.forwardPcp	bool	true
directionReverser.reverser.excludeEncapsulationProtocols	object	[]
directionReverser.join.displayStringTextFormat	string	“passed %p pk (%l)”	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
directionReverser.join.forwardServiceRegistration	bool	true
interfaceRelay.learner.displayStringTextFormat	string	“processed {numProcessedPackets} pk ({processedTotalLength})”	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
interfaceRelay.learner.macTableModule	string		Relative module path of MAC table
interfaceRelay.learner.interfaceTableModule	string		Relative module path of the interface table
interfaceRelay.selector.displayStringTextFormat	string	“processed {numProcessedPackets} pk ({processedTotalLength})”	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
interfaceRelay.selector.macTableModule	string		Relative module path of MAC table
interfaceRelay.selector.interfaceTableModule	string		Relative module path of interface table

Source code¶

//
// Provides various layer 2 services such as packet forwarding,
// interface selection, virtual LAN handling, stream handling.
//
module BridgingLayer like IProtocolLayer
{
    parameters:
        string macTableModule = default("");
        string interfaceTableModule; // Relative module path of the interface table
        *.macTableModule = default(absPath(this.macTableModule));
        *.interfaceTableModule = default(this.interfaceTableModule);
        @display("i=block/layer");
    gates:
        input upperLayerIn;
        output upperLayerOut;
        input lowerLayerIn;
        output lowerLayerOut;
    submodules:
        processingDelayLayer: <default("")> like IProcessingDelayLayer {
            @display("p=300,150");
        }
        directionReverser: <default("DirectionReverserLayer")> like IProtocolLayer {
            @display("p=300,300");
        }
        streamIdentifier: <default("")> like IProtocolLayer {
            @display("p=300,450");
        }
        streamRelay: <default("")> like IProtocolLayer {
            @display("p=300,600");
        }
        streamFilter: <default("")> like IProtocolLayer {
            @display("p=300,750");
        }
        streamCoder: <default("")> like IProtocolLayer {
            @display("p=300,900");
        }
        interfaceRelay: <default("InterfaceRelayLayer")> like IProtocolLayer {
            @display("p=300,1050");
        }
        vlanPolicy: <default("")> like IProtocolLayer {
            @display("p=300,1200");
        }
    connections:
        upperLayerIn --> processingDelayLayer.upperLayerIn;
        processingDelayLayer.lowerLayerOut --> directionReverser.upperLayerIn;
        directionReverser.lowerLayerOut --> streamIdentifier.upperLayerIn;
        streamIdentifier.lowerLayerOut --> streamRelay.upperLayerIn;
        streamRelay.lowerLayerOut --> streamFilter.upperLayerIn;
        streamFilter.lowerLayerOut --> streamCoder.upperLayerIn;
        streamCoder.lowerLayerOut --> interfaceRelay.upperLayerIn;
        interfaceRelay.lowerLayerOut --> vlanPolicy.upperLayerIn;
        vlanPolicy.lowerLayerOut --> lowerLayerOut;

        lowerLayerIn --> vlanPolicy.lowerLayerIn;
        vlanPolicy.upperLayerOut --> interfaceRelay.lowerLayerIn;
        interfaceRelay.upperLayerOut --> streamCoder.lowerLayerIn;
        streamCoder.upperLayerOut --> streamFilter.lowerLayerIn;
        streamFilter.upperLayerOut --> streamRelay.lowerLayerIn;
        streamRelay.upperLayerOut --> streamIdentifier.lowerLayerIn;
        streamIdentifier.upperLayerOut --> directionReverser.lowerLayerIn;
        directionReverser.upperLayerOut --> processingDelayLayer.lowerLayerIn;
        processingDelayLayer.upperLayerOut --> upperLayerOut;
}

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