Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
2.0 KiB
Bash
Executable File
65 lines
2.0 KiB
Bash
Executable File
#!/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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