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 random as random 33import scapy.all as sp 34import socket 35import sys 36 37def main(): 38 parser = argparse.ArgumentParser("frag6.py", 39 description="IPv6 fragementation test tool") 40 parser.add_argument('--sendif', nargs=1, 41 required=True, 42 help='The interface through which the packet will be sent') 43 parser.add_argument('--recvif', nargs=1, 44 required=True, 45 help='The interface on which to check for the packet') 46 parser.add_argument('--src', nargs=1, 47 required=True, 48 help='The source IP address') 49 parser.add_argument('--to', nargs=1, 50 required=True, 51 help='The destination IP address') 52 parser.add_argument('--debug', 53 required=False, action='store_true', 54 help='Enable test debugging') 55 56 args = parser.parse_args() 57 58 59 ######################################################################## 60 # 61 # Send a sample of pseudo-random fragments into the system in order 62 # to test vnet teardown. 63 # 64 # A: Cleaned up and freed 65 # R: No panic (ignoring everything else) 66 # 67 68 random.seed() 69 packets = []; 70 71 for i in range(0,127): 72 fid=random.randint(0,0xffff) 73 foffset=random.randint(0,0xffff) 74 fm=random.randint(0,1) 75 fsrc=sp.RandIP6() 76 ip6f01 = sp.Ether() / \ 77 sp.IPv6(src=fsrc, dst=args.to[0]) / \ 78 sp.IPv6ExtHdrFragment(offset=foffset, m=fm, id=fid) / \ 79 sp.UDP(dport=3456, sport=6543) 80 if args.debug: 81 ip6f01.display() 82 packets.append(ip6f01) 83 84 for p in packets: 85 sp.sendp(p, iface=args.sendif[0], verbose=False) 86 87 sys.exit(0) 88 89if __name__ == '__main__': 90 main() 91