Icmpv6¶

simple module Icmpv6

Implements ICMPv6 (RFC 4443): it generates and processes ICMPv6 error messages (destination unreachable, packet too big, time exceeded, parameter problem) on behalf of Ipv6, and answers Echo Requests (ping) with Echo Replies. Neighbor Discovery messages (RS/RA/NS/NA/Redirect) are not handled here but by Ipv6NeighbourDiscovery.

The transportIn/transportOut gates connect to upper-layer users such as a ping application; the ipv6In/ipv6Out gates connect to Ipv6.

Usage diagram¶

Inheritance diagram¶

Used in compound modules¶

Name	Type	Description
Ipv6NetworkLayer	compound module	Represents a complete IPv6 network layer (L3), to be used within hosts and routers. It connects to higher-layer protocols (TCP, UDP, …) on top and to the network interfaces below, and bundles the modules that together implement IPv6:

Extends¶

Name	Type	Description
SimpleModule	simple module	Base module for all INET simple modules.

Parameters¶

Name	Type	Default value	Description
displayStringTextFormat	string	“”	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
interfaceTableModule	string		The path to the InterfaceTable module
checksumMode	string	“declared”
mldModule	string	“”	Path to the MLD module, or “” if MLD is not enabled; MLD messages are dropped when empty

Properties¶

Name	Value	Description
class	Icmpv6
display	i=block/control

Gates¶

Name	Direction	Size	Description
transportIn	input
transportOut	output
ipv6In	input
ipv6Out	output

Source code¶

//
// Implements ICMPv6 (RFC 4443): it generates and processes ICMPv6 error
// messages (destination unreachable, packet too big, time exceeded, parameter
// problem) on behalf of ~Ipv6, and answers Echo Requests (ping) with Echo
// Replies. Neighbor Discovery messages (RS/RA/NS/NA/Redirect) are not handled
// here but by ~Ipv6NeighbourDiscovery.
//
// The `transportIn`/`transportOut` gates connect to upper-layer users such as a
// ping application; the `ipv6In`/`ipv6Out` gates connect to ~Ipv6.
//
// @see ~Ipv6, ~Ipv6RoutingTable, ~Ipv6NeighbourDiscovery
//
simple Icmpv6 extends SimpleModule
{
    parameters:
        @class(Icmpv6);
        string interfaceTableModule;   // The path to the InterfaceTable module
        string checksumMode @enum("declared", "computed") = default("declared");
        string mldModule = default("");  // Path to the MLD module, or "" if MLD is not enabled; MLD messages are dropped when empty
        @display("i=block/control");
    gates:
        input transportIn;
        output transportOut;
        input ipv6In;
        output ipv6Out;
}

File: src/inet/networklayer/icmpv6/Icmpv6.ned