3 # SPDX-License-Identifier: BSD-2-Clause
5 # Copyright (c) 2019 Netflix, Inc.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
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.
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
32 logging.getLogger("scapy").setLevel(logging.CRITICAL)
33 import scapy.all as sp
36 from time import sleep
39 parser = argparse.ArgumentParser("frag6.py",
40 description="IPv6 fragementation test tool")
41 parser.add_argument('--sendif', nargs=1,
43 help='The interface through which the packet will be sent')
44 parser.add_argument('--recvif', nargs=1,
46 help='The interface on which to check for the packet')
47 parser.add_argument('--src', nargs=1,
49 help='The source IP address')
50 parser.add_argument('--to', nargs=1,
52 help='The destination IP address')
53 parser.add_argument('--debug',
54 required=False, action='store_true',
55 help='Enable test debugging')
57 args = parser.parse_args()
60 ########################################################################
62 # Two fragments with different ECN (Traffic Clas) bits to trigger
65 # A: Reassembly failure.
66 # R: ip6f02 dropped / Timeout (not waiting for).
72 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x00) / \
73 sp.IPv6ExtHdrFragment(offset=0, m=1, id=13) / \
74 sp.UDP(dport=3456, sport=6543) / \
79 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x03) / \
80 sp.IPv6ExtHdrFragment(offset=16, m=0, id=13) / \
81 sp.UDP(dport=3456, sport=6543) / \
86 sp.sendp(ip6f01, iface=args.sendif[0], verbose=False)
87 sp.sendp(ip6f02, iface=args.sendif[0], verbose=False)
90 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ##
92 # Two fragments with different ECN (Traffic Clas) bits to trigger
95 # A: Reassembly failure.
96 # R: ip6f02 dropped / Timeout (not waiting for).
101 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x01) / \
102 sp.IPv6ExtHdrFragment(offset=0, m=1, id=0x1301) / \
103 sp.UDP(dport=3456, sport=6543) / \
108 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x00) / \
109 sp.IPv6ExtHdrFragment(offset=16, m=0, id=0x1301) / \
110 sp.UDP(dport=3456, sport=6543) / \
115 sp.sendp(ip6f01, iface=args.sendif[0], verbose=False)
116 sp.sendp(ip6f02, iface=args.sendif[0], verbose=False)
122 if __name__ == '__main__':