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
33 logging.getLogger("scapy").setLevel(logging.CRITICAL)
34 import scapy.all as sp
37 from time import sleep
40 parser = argparse.ArgumentParser("frag6.py",
41 description="IPv6 fragementation test tool")
42 parser.add_argument('--sendif', nargs=1,
44 help='The interface through which the packet will be sent')
45 parser.add_argument('--recvif', nargs=1,
47 help='The interface on which to check for the packet')
48 parser.add_argument('--src', nargs=1,
50 help='The source IP address')
51 parser.add_argument('--to', nargs=1,
53 help='The destination IP address')
54 parser.add_argument('--debug',
55 required=False, action='store_true',
56 help='Enable test debugging')
58 args = parser.parse_args()
61 ########################################################################
63 # Two fragments with different ECN (Traffic Clas) bits to trigger
66 # A: Reassembly failure.
67 # R: ip6f02 dropped / Timeout (not waiting for).
73 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x00) / \
74 sp.IPv6ExtHdrFragment(offset=0, m=1, id=13) / \
75 sp.UDP(dport=3456, sport=6543) / \
80 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x03) / \
81 sp.IPv6ExtHdrFragment(offset=16, m=0, id=13) / \
82 sp.UDP(dport=3456, sport=6543) / \
87 sp.sendp(ip6f01, iface=args.sendif[0], verbose=False)
88 sp.sendp(ip6f02, iface=args.sendif[0], verbose=False)
91 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ##
93 # Two fragments with different ECN (Traffic Clas) bits to trigger
96 # A: Reassembly failure.
97 # R: ip6f02 dropped / Timeout (not waiting for).
102 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x01) / \
103 sp.IPv6ExtHdrFragment(offset=0, m=1, id=0x1301) / \
104 sp.UDP(dport=3456, sport=6543) / \
109 sp.IPv6(src=args.src[0], dst=args.to[0], tc=0x00) / \
110 sp.IPv6ExtHdrFragment(offset=16, m=0, id=0x1301) / \
111 sp.UDP(dport=3456, sport=6543) / \
116 sp.sendp(ip6f01, iface=args.sendif[0], verbose=False)
117 sp.sendp(ip6f02, iface=args.sendif[0], verbose=False)
123 if __name__ == '__main__':