1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# Run a couple of IP defragmentation tests.
5
6set +x
7set -e
8
9readonly NETNS="ns-$(mktemp -u XXXXXX)"
10
11setup() {
12	ip netns add "${NETNS}"
13	ip -netns "${NETNS}" link set lo up
14
15	ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_high_thresh=9000000 >/dev/null 2>&1
16	ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_low_thresh=7000000 >/dev/null 2>&1
17	ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_time=1 >/dev/null 2>&1
18
19	ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_high_thresh=9000000 >/dev/null 2>&1
20	ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_low_thresh=7000000 >/dev/null 2>&1
21	ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_time=1 >/dev/null 2>&1
22
23	# DST cache can get full with a lot of frags, with GC not keeping up with the test.
24	ip netns exec "${NETNS}" sysctl -w net.ipv6.route.max_size=65536 >/dev/null 2>&1
25}
26
27cleanup() {
28	ip netns del "${NETNS}"
29}
30
31trap cleanup EXIT
32setup
33
34echo "ipv4 defrag"
35ip netns exec "${NETNS}" ./ip_defrag -4
36
37echo "ipv4 defrag with overlaps"
38ip netns exec "${NETNS}" ./ip_defrag -4o
39
40echo "ipv6 defrag"
41ip netns exec "${NETNS}" ./ip_defrag -6
42
43echo "ipv6 defrag with overlaps"
44ip netns exec "${NETNS}" ./ip_defrag -6o
45
46echo "all tests done"
47