Patch "selftests: mptcp: join: support local endpoint being tracked or not" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

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

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-mptcp-join-support-local-endpoint-being-tracked-or-not.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From d4c81bbb8600257fd3076d0196cb08bd2e5bdf24 Mon Sep 17 00:00:00 2001
From: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
Date: Sat, 10 Jun 2023 18:11:41 +0200
Subject: selftests: mptcp: join: support local endpoint being tracked or not

From: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>

commit d4c81bbb8600257fd3076d0196cb08bd2e5bdf24 upstream.

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@xxxxxxxxxxxxxxx
Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/net/mptcp/mptcp_join.sh |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -2064,11 +2064,18 @@ 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
 }
 


Patches currently in stable-queue which might be from matthieu.baerts@xxxxxxxxxxxx are

queue-6.1/selftests-mptcp-join-fix-shellcheck-warnings.patch
queue-6.1/selftests-mptcp-join-support-rm_addr-for-used-endpoints-or-not.patch
queue-6.1/selftests-mptcp-pm-nl-skip-fullmesh-flag-checks-if-not-supported.patch
queue-6.1/selftests-mptcp-lib-skip-if-missing-symbol.patch
queue-6.1/selftests-mptcp-join-skip-fullmesh-flag-tests-if-not-supported.patch
queue-6.1/selftests-mptcp-join-skip-fastclose-tests-if-not-supported.patch
queue-6.1/selftests-mptcp-remove-duplicated-entries-in-usage.patch
queue-6.1/selftests-mptcp-sockopt-skip-getsockopt-checks-if-not-supported.patch
queue-6.1/selftests-mptcp-join-skip-backup-if-set-flag-on-id-not-supported.patch
queue-6.1/selftests-mptcp-userspace-pm-skip-if-ip-tool-is-unavailable.patch
queue-6.1/selftests-mptcp-join-helpers-to-skip-tests.patch
queue-6.1/selftests-mptcp-lib-skip-if-not-below-kernel-version.patch
queue-6.1/selftests-mptcp-userspace-pm-skip-if-not-supported.patch
queue-6.1/selftests-mptcp-join-skip-implicit-tests-if-not-supported.patch
queue-6.1/selftests-mptcp-sockopt-relax-expected-returned-size.patch
queue-6.1/selftests-mptcp-pm-nl-remove-hardcoded-default-limits.patch
queue-6.1/selftests-mptcp-join-skip-check-if-mib-counter-not-supported.patch
queue-6.1/selftests-mptcp-join-use-iptables-legacy-if-available.patch
queue-6.1/selftests-mptcp-join-support-local-endpoint-being-tracked-or-not.patch
queue-6.1/selftests-mptcp-connect-skip-transp-tests-if-not-supported.patch
queue-6.1/selftests-mptcp-join-skip-mpc-backups-tests-if-not-supported.patch
queue-6.1/selftests-mptcp-connect-skip-disconnect-tests-if-not-supported.patch



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