xref: /freebsd/tests/sys/netinet6/scapyi386.py (revision e6bfd18d21b225af6a0ed67ceeaf1293b7b9eba5)
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 logging
33logging.getLogger("scapy").setLevel(logging.CRITICAL)
34import scapy.all as sp
35import socket
36import sys
37
38def main():
39	parser = argparse.ArgumentParser("scapyi386.py",
40		description="IPv6 Ethernet Dest MAC test")
41	parser.add_argument('--sendif', nargs=1,
42		required=True,
43		help='The interface through which the packet will be sent')
44	parser.add_argument('--recvif', nargs=1,
45		required=True,
46		help='The interface on which to check for the packet')
47	parser.add_argument('--src', nargs=1,
48		required=True,
49		help='The source IP address')
50	parser.add_argument('--to', nargs=1,
51		required=True,
52		help='The destination IP address')
53	parser.add_argument('--debug',
54		required=False, action='store_true',
55		help='Enable test debugging')
56
57	args = parser.parse_args()
58
59	########################################################################
60	#
61	# A test case to check that IPv6 packets are sent with a proper
62	# (resolved) Ethernet Destination MAC address instead of the BCAST one.
63	# This was needed as test cases did not work properly on i386 due to a
64	# scapy BPF parsing bug. (See PR 239380 and duplicates).
65	#
66	bcmac = sp.Ether(dst="ff:ff:ff:ff:ff:ff").dst
67	data = "6" * 88
68	pkt = sp.Ether() / \
69		sp.IPv6(src=args.src[0], dst=args.to[0]) / \
70		sp.UDP(dport=3456, sport=6543) / \
71		data
72	sp.sendp(pkt, iface=args.sendif[0], verbose=False)
73
74	eth = pkt.getlayer(sp.Ether)
75	if eth is None:
76		print("No Ether in packet")
77		pkt.display()
78		sys.exit(1)
79	if eth.dst == bcmac:
80		print("Broadcast dMAC on packet")
81		eth.display()
82		sys.exit(1)
83
84	sys.exit(0)
85
86if __name__ == '__main__':
87	main()
88