66 lines
2.3 KiB
Ruby
66 lines
2.3 KiB
Ruby
# $Id: gre.rb 14 2008-03-02 05:42:30Z warchild $
|
|
#
|
|
# Copyright (c) 2008, Jon Hart
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
# * Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# * Neither the name of the <organization> nor the
|
|
# names of its contributors may be used to endorse or promote products
|
|
# derived from this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY Jon Hart ``AS IS'' AND ANY
|
|
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
# DISCLAIMED. IN NO EVENT SHALL Jon Hart BE LIABLE FOR ANY
|
|
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
module Racket
|
|
module L4
|
|
# XXX: currently broken. all of the "optional" fields must be made dynamic
|
|
class GRE < RacketPart
|
|
# Is a checksum present?
|
|
unsigned :checksum_present, 1
|
|
# Is routing information present?
|
|
unsigned :routing_present, 1
|
|
# Is a key present?
|
|
unsigned :key_present, 1
|
|
# Is a sequence number present?
|
|
unsigned :seq_present, 1
|
|
# Strict source route
|
|
unsigned :ssr, 1
|
|
# How many additional encapsulations are present?
|
|
unsigned :recursion, 3
|
|
# Flags
|
|
unsigned :flags, 5
|
|
# Version
|
|
unsigned :version, 3
|
|
# Protocol type
|
|
unsigned :protocol, 16
|
|
# Checksum
|
|
unsigned :checksum, 16
|
|
# Offset
|
|
unsigned :offset, 16
|
|
# Key
|
|
unsigned :key, 32
|
|
# Sequence Number
|
|
unsigned :seq, 32
|
|
# Routing
|
|
unsigned :routing, 32
|
|
# Payload
|
|
rest :payload
|
|
end
|
|
end
|
|
end
|
|
# vim: set ts=2 et sw=2:
|