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selftests: mptcp: join: check re-re-adding ID 0 endp

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commit d397d7246c11ca36c33c932bc36d38e3a79e9aa0 upstream.

This test extends "delete and re-add" to validate the previous commit:
when the endpoint linked to the initial subflow (ID 0) is re-added
multiple times, it was no longer being used, because the internal linked
counters are not decremented for this special endpoint: it is not an
additional endpoint.

Here, the "del/add id 0" steps are done 3 times to unsure this case is
validated.

The 'Fixes' tag here below is the same as the one from the previous
commit: this patch here is not fixing anything wrong in the selftests,
but it validates the previous fix for an issue introduced by this commit
ID.

Fixes: 3ad14f54bd ("mptcp: more accurate MPC endpoint tracking")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
[ Conflicts in mptcp_join.sh, because the helpers are different in this
  version:
  - run_tests has been modified a few times to reduce the number of
    positional parameters
  - no chk_mptcp_info helper
  - chk_subflow_nr taking an extra parameter
  - kill_tests_wait instead of mptcp_lib_kill_wait ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthieu Baerts (NGI0)
2024-09-04 13:13:02 +02:00
committed by Greg Kroah-Hartman
parent 753427d8e4
commit ec243defc5
1 changed files with 12 additions and 9 deletions
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21
tools/testing/selftests/net/mptcp/mptcp_join.sh
View File

@@ -3341,7 +3341,7 @@ endpoint_tests()
pm_nl_set_limits $ns2 0 3
pm_nl_add_endpoint $ns2 10.0.1.2 id 1 dev ns2eth1 flags subflow
pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2 flags subflow
run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_20 2>/dev/null &
run_tests $ns1 $ns2 10.0.1.1 4 0 0 speed_5 2>/dev/null &
wait_mpj $ns2
pm_nl_del_endpoint $ns2 2 10.0.2.2
@@ -3362,18 +3362,21 @@ endpoint_tests()
wait_mpj $ns2
chk_subflow_nr "" "after no reject" 3
pm_nl_del_endpoint $ns2 1 10.0.1.2
sleep 0.5
chk_subflow_nr "" "after delete id 0" 2
local i
for i in $(seq 3); do
pm_nl_del_endpoint $ns2 1 10.0.1.2
sleep 0.5
chk_subflow_nr "" "after delete id 0 ($i)" 2
pm_nl_add_endpoint $ns2 10.0.1.2 id 1 dev ns2eth1 flags subflow
wait_mpj $ns2
chk_subflow_nr "" "after re-add id 0" 3
pm_nl_add_endpoint $ns2 10.0.1.2 id 1 dev ns2eth1 flags subflow
wait_mpj $ns2
chk_subflow_nr "" "after re-add id 0 ($i)" 3
done
kill_tests_wait
chk_join_nr 4 4 4
chk_rm_nr 2 2
chk_join_nr 6 6 6
chk_rm_nr 4 4
fi
}