1#!/usr/bin/env python 2#- 3# SPDX-License-Identifier: BSD-2-Clause 4# 5# Copyright (c) 2019 Netflix, Inc. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28# $FreeBSD$ 29# 30 31import argparse 32import scapy.all as sp 33import socket 34import sys 35 36def main(): 37 parser = argparse.ArgumentParser("frag6.py", 38 description="IPv6 fragementation test tool") 39 parser.add_argument('--sendif', nargs=1, 40 required=True, 41 help='The interface through which the packet will be sent') 42 parser.add_argument('--recvif', nargs=1, 43 required=True, 44 help='The interface on which to check for the packet') 45 parser.add_argument('--src', nargs=1, 46 required=True, 47 help='The source IP address') 48 parser.add_argument('--to', nargs=1, 49 required=True, 50 help='The destination IP address') 51 parser.add_argument('--debug', 52 required=False, action='store_true', 53 help='Enable test debugging') 54 55 args = parser.parse_args() 56 57 58 ######################################################################## 59 # 60 # Send a sample of sequeneced ID fragments into the system in order 61 # to test bucket distribution. 62 # 63 # A: No overflow at V_ip6_maxfragsperpacket == 64. 64 # R: Stats only, timeout and no ICMPv6 (all ignored). 65 # 66 packets = []; 67 data = "66666666" 68 for i in range(0,127): 69 ip6f01 = sp.Ether() / \ 70 sp.IPv6(src=args.src[0], dst=args.to[0]) / \ 71 sp.IPv6ExtHdrFragment(offset=1, m=1, id=i) / \ 72 data 73 if args.debug: 74 ip6f01.display() 75 packets.append(ip6f01) 76 77 for p in packets: 78 sp.sendp(p, iface=args.sendif[0], verbose=False) 79 80 sys.exit(0) 81 82if __name__ == '__main__': 83 main() 84