5.15-stable review patch. If anyone has any objections, please let me know.
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From: "Matthieu Baerts (NGI0)" matttbe@kernel.org
commit 935ff5bb8a1cfcdf8e60c8f5c794d0bbbc234437 upstream.
A peer can notify the other one that a subflow has to be treated as "backup" by two different ways: either by sending a dedicated MP_PRIO notification, or by setting the backup flag in the MP_JOIN handshake.
The selftests were previously monitoring the former, but not the latter. This is what is now done here by looking at these new MIB counters when validating the 'backup' cases:
MPTcpExtMPJoinSynBackupRx MPTcpExtMPJoinSynAckBackupRx
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 will help to validate a new fix for an issue introduced by this commit ID.
Fixes: 4596a2c1b7f5 ("mptcp: allow creating non-backup subflows") 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 check are done has changed, e.g. in commit 03668c65d153 ("selftests: mptcp: join: rework detailed report"), or commit 985de45923e2 ("selftests: mptcp: centralize stats dumping"), etc. Adaptations have been made to use the old way, similar to what is done just above. Also, in this version, some subtests are missing. Only the two using chk_prio_nr() have been modified. ] Signed-off-by: Matthieu Baerts (NGI0) matttbe@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/net/mptcp/mptcp_join.sh | 30 ++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-)
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -925,6 +925,8 @@ chk_prio_nr() { local mp_prio_nr_tx=$1 local mp_prio_nr_rx=$2 + local mpj_syn=$3 + local mpj_syn_ack=$4 local count local dump_stats
@@ -952,6 +954,30 @@ chk_prio_nr() echo "[ ok ]" fi
+ printf "%-39s %s" " " "bkp syn" + count=$(get_counter ${ns1} "MPTcpExtMPJoinSynBackupRx") + if [ -z "$count" ]; then + echo -n "[skip]" + elif [ "$count" != "$mpj_syn" ]; then + echo "[fail] got $count JOIN[s] syn with Backup expected $mpj_syn" + ret=1 + dump_stats=1 + else + echo -n "[ ok ]" + fi + + echo -n " - synack " + count=$(get_counter ${ns2} "MPTcpExtMPJoinSynAckBackupRx") + if [ -z "$count" ]; then + echo "[skip]" + elif [ "$count" != "$mpj_syn_ack" ]; then + echo "[fail] got $count JOIN[s] synack with Backup expected $mpj_syn_ack" + ret=1 + dump_stats=1 + else + echo "[ ok ]" + fi + if [ "${dump_stats}" = 1 ]; then echo Server ns stats ip netns exec $ns1 nstat -as | grep MPTcp @@ -1557,7 +1583,7 @@ backup_tests() ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow,backup run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow nobackup chk_join_nr "single subflow, backup" 1 1 1 - chk_prio_nr 0 1 + chk_prio_nr 0 1 1 0
# single address, backup reset @@ -1567,7 +1593,7 @@ backup_tests() run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow backup chk_join_nr "single address, backup" 1 1 1 chk_add_nr 1 1 - chk_prio_nr 1 0 + chk_prio_nr 1 0 0 0 }
add_addr_ports_tests()