Tun

simple module

(no description)

Used in compound modules

Name	Type	Description
TunInterface	compound module	This module implements a TUN network interface.

Parameters

Name	Type	Default value	Description
interfaceTableModule	string		The path to the InterfaceTable module
mtu	int	1500B

Properties

Name	Value	Description
display	i=block/tunnel

Gates

Name	Direction	Size	Description
upperLayerIn	input		from upper layers
upperLayerOut	output		to upper layers

Signals

Name	Type	Unit
packetReceivedFromLower	cPacket
packetReceivedFromUpper	cPacket
packetSentToLower	cPacket
packetSentToUpper	cPacket

Direct method calls (observed)

call to	function	info
MessageDispatcher	inet::MessageDispatcher::arrived	arrived

Incoming messages (observed)

gate	msg	kind	ctrl	srcModule	tags
upperLayerIn	Packet	0		Ipv4	DispatchProtocolInd, InterfaceInd, InterfaceReq, MacAddressInd, NetworkProtocolInd, PacketProtocolTag
upperLayerIn	Packet	4 (TunCommandCode::TUN_C_DATA)		TunnelApp	InterfaceReq, SocketReq
upperLayerIn	Request	1 (TunCommandCode::TUN_C_OPEN)	TunOpenCommand	TunnelApp	InterfaceReq, SocketReq

Outgoing messages (observed)

gate	msg	kind	ctrl	destModule	tags
upperLayerOut	Packet	4 (TunSocketIndication::TUN_I_DATA)		TunnelApp	InterfaceInd, NetworkProtocolInd, PacketProtocolTag, SocketInd
upperLayerOut	Packet	4 (TunSocketIndication::TUN_I_DATA)		Ipv4	DispatchProtocolReq, InterfaceInd, PacketProtocolTag

Shared Tagging operations (observed)

tagType	tagAction
	clearTags
DispatchProtocolReq	addTag
InterfaceInd	addTag
NetworkProtocolInd	addTag, getTag
PacketProtocolTag	addTag, getTag
SocketInd	addTag
SocketReq	findTag, getTag

Source code

simple Tun
{
    parameters:
        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
}

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