xref: /freebsd/tests/sys/netinet6/frag6/frag6_19.py (revision 6966ac055c3b7a39266fb982493330df7a097997)
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