BackgroundFlow.ned

package gpu_share.gpu.modules;

//
// Background Flow module for generating network traffic
// Emits DataPkt bursts to create serialization delays and contention
// Simulates TCP-like or telnet/ssh-like background flows
//
simple BackgroundFlow
{
    parameters:
        int vlanId = default(10);                           // VLAN identifier
        int flowId = default(1);                            // Unique flow identifier
        int srcAddr = default(1);                           // Source address
        int destAddr = default(2);                          // Destination address (-1 for broadcast)

        // Traffic generation parameters
        double burstInterval @unit(s) = default(1s);        // Time between bursts
        int burstSize = default(10);                        // Packets per burst
        int packetSize = default(1500);                     // Packet size in bytes (MTU-like)
        double packetInterval @unit(s) = default(10ms);     // Inter-packet gap within burst
        double startTime @unit(s) = default(uniform(0s, 1s)); // Random start time
        int maxBursts = default(0);                         // Max bursts to send (0=unlimited)
        bool debug = default(false);                        // Debug logging

        // Statistics
        @signal[packetsSent](type=long);
        @signal[bytesSent](type=long);
        @signal[burstsCompleted](type=long);
        @statistic[pktsSent](title="Packets sent"; source=packetsSent; record=count,vector);
        @statistic[dataVolume](title="Bytes sent"; source=bytesSent; record=sum,vector);
        @statistic[burstCount](title="Bursts completed"; source=burstsCompleted; record=count,vector);

        // Display
        @display("i=block/arrival");

    gates:
        inout port;     // Connection to VLAN bus
}