This is a note to let you know that I've just added the patch titled selftests: mptcp: join: skip fullmesh flag tests if not supported 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-skip-fullmesh-flag-tests-if-not-supported.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 9db34c4294af9999edc773d96744e2d2d4eb5060 Mon Sep 17 00:00:00 2001 From: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx> Date: Sat, 10 Jun 2023 18:11:46 +0200 Subject: selftests: mptcp: join: skip fullmesh flag tests if not supported From: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx> commit 9db34c4294af9999edc773d96744e2d2d4eb5060 upstream. Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of the fullmesh flag for the in-kernel PM introduced by commit 2843ff6f36db ("mptcp: remote addresses fullmesh") and commit 1a0d6136c5f0 ("mptcp: local addresses fullmesh"). It looks like there is no easy external sign we can use to predict the expected behaviour. We could add the flag and then check if it has been added but for that, and for each fullmesh test, we would need to setup a new environment, do the checks, clean it and then only start the test from yet another clean environment. To keep it simple and avoid introducing new issues, we look for a specific kernel version. That's not ideal but an acceptable solution for this case. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 6a0653b96f5d ("selftests: mptcp: add fullmesh setting tests") 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 | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -2936,7 +2936,8 @@ fullmesh_tests() fi # set fullmesh flag - if reset "set fullmesh flag test"; then + if reset "set fullmesh flag test" && + continue_if mptcp_lib_kversion_ge 5.18; then pm_nl_set_limits $ns1 4 4 pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow pm_nl_set_limits $ns2 4 4 @@ -2946,7 +2947,8 @@ fullmesh_tests() fi # set nofullmesh flag - if reset "set nofullmesh flag test"; then + if reset "set nofullmesh flag test" && + continue_if mptcp_lib_kversion_ge 5.18; then pm_nl_set_limits $ns1 4 4 pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow,fullmesh pm_nl_set_limits $ns2 4 4 @@ -2956,7 +2958,8 @@ fullmesh_tests() fi # set backup,fullmesh flags - if reset "set backup,fullmesh flags test"; then + if reset "set backup,fullmesh flags test" && + continue_if mptcp_lib_kversion_ge 5.18; then pm_nl_set_limits $ns1 4 4 pm_nl_add_endpoint $ns1 10.0.2.1 flags subflow pm_nl_set_limits $ns2 4 4 @@ -2967,7 +2970,8 @@ fullmesh_tests() fi # set nobackup,nofullmesh flags - if reset "set nobackup,nofullmesh flags test"; then + if reset "set nobackup,nofullmesh flags test" && + continue_if mptcp_lib_kversion_ge 5.18; then pm_nl_set_limits $ns1 4 4 pm_nl_set_limits $ns2 4 4 pm_nl_add_endpoint $ns2 10.0.2.2 flags subflow,backup,fullmesh 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