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selftests: mptcp: connect: skip TFO tests if not supported

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Selftests are supposed to run on any kernels, including the old ones not
supporting all MPTCP features.

One of them is the support of TCP_FASTOPEN socket option with MPTCP
connections introduced by commit 4ffb0a02346c ("mptcp: add TCP_FASTOPEN
sock option").

It is possible to look for "mptcp_fastopen_" in kallsyms to know if the
feature is supported or not.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: ca7ae8916043 ("selftests: mptcp: mptfo Initiator/Listener")
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Matthieu Baerts 2023-06-08 18:38:46 +02:00 committed by Jakub Kicinski
parent 4ad39a42da
commit 06b0308315
1 changed files with 5 additions and 0 deletions
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5
tools/testing/selftests/net/mptcp/mptcp_connect.sh
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@ -777,6 +777,11 @@ run_tests_peekmode()
run_tests_mptfo()
{
if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then
echo "INFO: TFO not supported by the kernel: SKIP"
return
fi
echo "INFO: with MPTFO start"
ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2
ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1