commit 5f94b08c001290acda94d9d8868075590931c198 upstream.
Removing the endpoint linked to the initial subflow should trigger a
RM_ADDR for the right ID, and the removal of the subflow. That's what is
now being verified in the "delete and re-add" test.
Note that removing the initial subflow will not decrement the 'subflows'
counters, which corresponds to the *additional* subflows. On the other
hand, when the same endpoint is re-added, it will increment this
counter, as it will be seen as an additional subflow this time.
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: 3ad14f54bd74 ("mptcp: more accurate MPC endpoint tracking")
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Mat Martineau <martineau@xxxxxxxxxx>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
---
.../testing/selftests/net/mptcp/mptcp_join.sh | 21 +++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 7682a7e2cb51..ea1c7992336d 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -3268,19 +3268,20 @@ endpoint_tests()
if reset_with_tcp_filter "delete and re-add" ns2 10.0.3.2 REJECT OUTPUT &&
mptcp_lib_kallsyms_has "subflow_rebuild_header$"; then
- pm_nl_set_limits $ns1 0 2
- pm_nl_set_limits $ns2 0 2
+ pm_nl_set_limits $ns1 0 3
+ 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 &
wait_mpj $ns2
pm_nl_del_endpoint $ns2 2 10.0.2.2
sleep 0.5
- chk_subflow_nr needtitle "after delete" 1
+ chk_subflow_nr needtitle "after delete id 2" 1
pm_nl_add_endpoint $ns2 10.0.2.2 id 2 dev ns2eth2 flags subflow
wait_mpj $ns2
- chk_subflow_nr "" "after re-add" 2
+ chk_subflow_nr "" "after re-add id 2" 2
pm_nl_add_endpoint $ns2 10.0.3.2 id 3 flags subflow
wait_attempt_fail $ns2
@@ -3292,10 +3293,18 @@ 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
+
+ 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
+
kill_tests_wait
- chk_join_nr 3 3 3
- chk_rm_nr 1 1
+ chk_join_nr 4 4 4
+ chk_rm_nr 2 2
fi
# remove and re-add
--
2.45.2
