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selftests: mptcp: join: support local endpoint being tracked or not

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

At some points, a new feature caused internal behaviour changes we are
verifying in the selftests, see the Fixes tag below. It was not a uAPI
change but because in these selftests, we check some internal
behaviours, it is normal we have to adapt them from time to time after
having added some features.

It is possible to look for "mptcp_pm_subflow_check_next" in kallsyms
because it was needed to introduce the mentioned feature. So we can know
in advance what the behaviour we are expecting here instead of
supporting the two behaviours.

Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368
Fixes: 86e39e04482b ("mptcp: keep track of local endpoint still available for each msk")
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 2023-06-10 18:11:41 +02:00 committed by Jakub Kicinski
parent 4a0b866a3f
commit d4c81bbb86
1 changed files with 11 additions and 4 deletions
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15
tools/testing/selftests/net/mptcp/mptcp_join.sh
View File

@ -2129,11 +2129,18 @@ signal_address_tests()
# the peer could possibly miss some addr notification, allow retransmission
ip netns exec $ns1 sysctl -q net.mptcp.add_addr_timeout=1
run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
chk_join_nr 3 3 3
# the server will not signal the address terminating
# the MPC subflow
chk_add_nr 3 3
# It is not directly linked to the commit introducing this
# symbol but for the parent one which is linked anyway.
if ! mptcp_lib_kallsyms_has "mptcp_pm_subflow_check_next$"; then
chk_join_nr 3 3 2
chk_add_nr 4 4
else
chk_join_nr 3 3 3
# the server will not signal the address terminating
# the MPC subflow
chk_add_nr 3 3
fi
fi
}