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64 lines
2.0 KiB
64 lines
2.0 KiB
#!/bin/sh |
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# SPDX-License-Identifier: GPL-2.0 |
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# |
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# Run a couple of IP defragmentation tests. |
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set +x |
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set -e |
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modprobe -q nf_defrag_ipv6 |
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readonly NETNS="ns-$(mktemp -u XXXXXX)" |
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setup() { |
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ip netns add "${NETNS}" |
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ip -netns "${NETNS}" link set lo up |
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ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_high_thresh=9000000 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_low_thresh=7000000 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_time=1 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_high_thresh=9000000 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_low_thresh=7000000 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_time=1 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.netfilter.nf_conntrack_frag6_high_thresh=9000000 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.netfilter.nf_conntrack_frag6_low_thresh=7000000 >/dev/null 2>&1 |
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ip netns exec "${NETNS}" sysctl -w net.netfilter.nf_conntrack_frag6_timeout=1 >/dev/null 2>&1 |
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# DST cache can get full with a lot of frags, with GC not keeping up with the test. |
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ip netns exec "${NETNS}" sysctl -w net.ipv6.route.max_size=65536 >/dev/null 2>&1 |
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} |
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cleanup() { |
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ip netns del "${NETNS}" |
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} |
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trap cleanup EXIT |
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setup |
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echo "ipv4 defrag" |
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ip netns exec "${NETNS}" ./ip_defrag -4 |
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echo "ipv4 defrag with overlaps" |
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ip netns exec "${NETNS}" ./ip_defrag -4o |
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echo "ipv6 defrag" |
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ip netns exec "${NETNS}" ./ip_defrag -6 |
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echo "ipv6 defrag with overlaps" |
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ip netns exec "${NETNS}" ./ip_defrag -6o |
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# insert an nf_conntrack rule so that the codepath in nf_conntrack_reasm.c taken |
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ip netns exec "${NETNS}" ip6tables -A INPUT -m conntrack --ctstate INVALID -j ACCEPT |
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echo "ipv6 nf_conntrack defrag" |
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ip netns exec "${NETNS}" ./ip_defrag -6 |
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echo "ipv6 nf_conntrack defrag with overlaps" |
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# netfilter will drop some invalid packets, so we run the test in |
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# permissive mode: i.e. pass the test if the packet is correctly assembled |
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# even if we sent an overlap |
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ip netns exec "${NETNS}" ./ip_defrag -6op |
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echo "all tests done"
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