DropTailQueue

Package: inet.common.queue

DropTailQueue

simple module

Drop-tail queue, to be used in network interfaces. Conforms to the IOutputQueue interface.

DropTailQueue

Inheritance diagram

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

Used in compound modules

Name Type Description
DiffservQueue compound module

This is an example queue, that can be used in interfaces of DS core and edge nodes to support the AFxy (RFC 2597) and EF (RFC 3246) PHBs.

EtherQosQueue compound module

Queue module that gives the PAUSE frames a higher priority, and can be parametrized with an IOutputQueue for serving the other frames.

Parameters

Name Type Default value Description
frameCapacity int 100
queueName string "l2queue"

name of the inner cQueue object, used in the 'q' tag of the display string

Properties

Name Value Description
display i=block/queue

Gates

Name Direction Size Description
in input
out output

Signals

Name Type Unit
packetReceived cPacket
packetDequeued cPacket
packetEnqueued cPacket
queueLength long
queueingTime simtime_t s
packetDropped cPacket

Statistics

Name Title Source Record Unit Interpolation Mode
packetReceived received packets count, sum(packetBytes), vector(packetBytes) none
queueLength queue length max, timeavg, vector sample-hold
queueingTime queueing time histogram, vector none
dropPk dropped packets packetDropped count, sum(packetBytes), vector(packetBytes) none

Source code

//
// Drop-tail queue, to be used in network interfaces.
// Conforms to the ~IOutputQueue interface.
//
simple DropTailQueue like IOutputQueue
{
    parameters:
        int frameCapacity = default(100);
        string queueName = default("l2queue"); // name of the inner cQueue object, used in the 'q' tag of the display string
        @display("i=block/queue");
        @signal[packetReceived](type=cPacket);
        @signal[packetEnqueued](type=cPacket);
        @signal[packetDequeued](type=cPacket);
        @signal[packetDropped](type=cPacket);
        @signal[queueingTime](type=simtime_t; unit=s);
        @signal[queueLength](type=long);
        @statistic[packetReceived](title="received packets"; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);
        @statistic[dropPk](title="dropped packets"; source=packetDropped; record=count,"sum(packetBytes)","vector(packetBytes)"; interpolationmode=none);
        @statistic[queueingTime](title="queueing time"; record=histogram,vector; interpolationmode=none);
        @statistic[queueLength](title="queue length"; record=max,timeavg,vector; interpolationmode=sample-hold);
    gates:
        input in;
        output out;
}

File: src/inet/common/queue/DropTailQueue.ned