NED File src/inet/linklayer/tun/Tun.ned

Name	Type	Description
Tun	simple module	Implements a TUN (network tunnel) interface that provides a virtual network interface for applications. This is the main component of ~TunInterface. Allows applications to send and receive packets directly to/from the network layer using a socket-like API. Maintains a list of registered sockets and handles commands for opening, closing, and using the TUN interface. Processes packets between upper layers and the network layer, adding appropriate tags for routing.

Source code

//
// Copyright (C) 2015 Irene Ruengeler
// Copyright (C) 2018 OpenSim Ltd.
//
// SPDX-License-Identifier: LGPL-3.0-or-later
//

package inet.linklayer.tun;

import inet.common.SimpleModule;

//
// Implements a TUN (network tunnel) interface that provides a virtual network
// interface for applications. This is the main component of ~TunInterface.
// Allows applications to send and receive packets
// directly to/from the network layer using a socket-like API. Maintains a list
// of registered sockets and handles commands for opening, closing, and using
// the TUN interface. Processes packets between upper layers and the network
// layer, adding appropriate tags for routing.
//
simple Tun extends SimpleModule
{
    parameters:
        @class(Tun);
        string interfaceTableModule;    // The path to the InterfaceTable module
        int mtu @unit(B) = default(1500B);
        @display("i=block/tunnel");

        @signal[packetSentToLower](type=cPacket);
        @signal[packetReceivedFromLower](type=cPacket);
        @signal[packetSentToUpper](type=cPacket);
        @signal[packetReceivedFromUpper](type=cPacket);

    gates:
        input upperLayerIn @messageKinds(inet::TunCommandCode);    // From upper layers
        output upperLayerOut @messageKinds(inet::TunSocketIndication);  // To upper layers
}