Net::Packet::LLC.3pm

Langue: en

Version: 2006-11-23 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Net::Packet::LLC - Logical-Link Control layer 3 object

SYNOPSIS

    use Net::Packet::Consts qw(:llc);
    require Net::Packet::LLC;
 
    # Build a layer
    my $layer = Net::Packet::LLC->new(
       dsap    => NP_LLC_DSAP_SNAP,
       ig      => 1,
       ssap    => NP_LLC_SSAP_SNAP,
       cr      => 1,
       control => 0x03,
       oui     => NP_LLC_OUI_CISCO,
       pid     => NP_LLC_PID_CDP,
    );
    $layer->pack;
 
    print 'RAW: '.unpack('H*', $layer->raw)."\n";
 
    # Read a raw layer
    my $layer = Net::Packet::LLC->new(raw => $raw);
 
    print $layer->print."\n";
    print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
       if $layer->payload;

DESCRIPTION

This modules implements the encoding and decoding of the Logical-Link Control layer.

See also Net::Packet::Layer and Net::Packet::Layer3 for other attributes and methods.

ATTRIBUTES

dsap - 7 bits
ig - 1 bit
ssap - 7 bits
cr - 1 bit
control - 8 bits
oui - 24 bits
pid - 16 bits

METHODS

new
Object constructor. You can pass attributes that will overwrite default ones. Default values:

dsap: NP_LLC_DSAP_SNAP

ig: 1

ssap: NP_LLC_SSAP_SNAP

cr: 1

control: 0x03

oui: NP_LLC_OUI_CISCO

pid: NP_LLC_PID_CDP

pack
Packs all attributes into a raw format, in order to inject to network. Returns 1 on success, undef otherwise.
unpack
Unpacks raw data from network and stores attributes into the object. Returns 1 on success, undef otherwise.

CONSTANTS

Load them: use Net::Packet::Consts qw(:llc);
NP_LLC_HDR_LEN
LLC header length.
NP_LLC_OUI_CISCO
Oui attribute constants.
NP_LLC_PID_CDP
NP_LLC_PID_STP
Pid attribute constants.
NP_LLC_DSAP_SNAP
Dsap attribute constants.
NP_LLC_SSAP_SNAP
Ssap attribute constants.

AUTHOR

Patrice <GomoR> Auffret Copyright (c) 2004-2006, Patrice <GomoR> Auffret

You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.

NetPacket, Net::RawIP, Net::RawSock