This is a note to let you know that I've just added the patch titled selftests: mptcp: more stable diag tests to the 5.10-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-more-stable-diag-tests.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7751433e2e0357d3d5cb881f865f508af98599d3 Author: Paolo Abeni <pabeni@xxxxxxxxxx> Date: Mon Jun 27 18:02:41 2022 -0700 selftests: mptcp: more stable diag tests [ Upstream commit 42fb6cddec3b306c9f6ef136b6438e0de1836431 ] The mentioned test-case still use an hard-coded-len sleep to wait for a relative large number of connection to be established. On very slow VM and with debug build such timeout could be exceeded, causing failures in our CI. Address the issue polling for the expected condition several times, up to an unreasonable high amount of time. On reasonably fast system the self-tests will be faster then before, on very slow one we will still catch the correct condition. Fixes: df62f2ec3df6 ("selftests/mptcp: add diag interface tests") Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx> Signed-off-by: Mat Martineau <mathew.j.martineau@xxxxxxxxxxxxxxx> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/testing/selftests/net/mptcp/diag.sh b/tools/testing/selftests/net/mptcp/diag.sh index ff821025d309..49dfabded1d4 100755 --- a/tools/testing/selftests/net/mptcp/diag.sh +++ b/tools/testing/selftests/net/mptcp/diag.sh @@ -61,6 +61,39 @@ chk_msk_nr() __chk_nr "grep -c token:" $* } +wait_msk_nr() +{ + local condition="grep -c token:" + local expected=$1 + local timeout=20 + local msg nr + local max=0 + local i=0 + + shift 1 + msg=$* + + while [ $i -lt $timeout ]; do + nr=$(ss -inmHMN $ns | $condition) + [ $nr == $expected ] && break; + [ $nr -gt $max ] && max=$nr + i=$((i + 1)) + sleep 1 + done + + printf "%-50s" "$msg" + if [ $i -ge $timeout ]; then + echo "[ fail ] timeout while expecting $expected max $max last $nr" + ret=$test_cnt + elif [ $nr != $expected ]; then + echo "[ fail ] expected $expected found $nr" + ret=$test_cnt + else + echo "[ ok ]" + fi + test_cnt=$((test_cnt+1)) +} + chk_msk_fallback_nr() { __chk_nr "grep -c fallback" $* @@ -109,7 +142,7 @@ ip -n $ns link set dev lo up echo "a" | \ timeout ${timeout_test} \ ip netns exec $ns \ - ./mptcp_connect -p 10000 -l -t ${timeout_poll} \ + ./mptcp_connect -p 10000 -l -t ${timeout_poll} -w 20 \ 0.0.0.0 >/dev/null & wait_local_port_listen $ns 10000 chk_msk_nr 0 "no msk on netns creation" @@ -117,7 +150,7 @@ chk_msk_nr 0 "no msk on netns creation" echo "b" | \ timeout ${timeout_test} \ ip netns exec $ns \ - ./mptcp_connect -p 10000 -r 0 -t ${timeout_poll} \ + ./mptcp_connect -p 10000 -r 0 -t ${timeout_poll} -w 20 \ 127.0.0.1 >/dev/null & wait_connected $ns 10000 chk_msk_nr 2 "after MPC handshake " @@ -129,13 +162,13 @@ flush_pids echo "a" | \ timeout ${timeout_test} \ ip netns exec $ns \ - ./mptcp_connect -p 10001 -l -s TCP -t ${timeout_poll} \ + ./mptcp_connect -p 10001 -l -s TCP -t ${timeout_poll} -w 20 \ 0.0.0.0 >/dev/null & wait_local_port_listen $ns 10001 echo "b" | \ timeout ${timeout_test} \ ip netns exec $ns \ - ./mptcp_connect -p 10001 -r 0 -t ${timeout_poll} \ + ./mptcp_connect -p 10001 -r 0 -t ${timeout_poll} -w 20 \ 127.0.0.1 >/dev/null & wait_connected $ns 10001 chk_msk_fallback_nr 1 "check fallback" @@ -146,7 +179,7 @@ for I in `seq 1 $NR_CLIENTS`; do echo "a" | \ timeout ${timeout_test} \ ip netns exec $ns \ - ./mptcp_connect -p $((I+10001)) -l -w 10 \ + ./mptcp_connect -p $((I+10001)) -l -w 20 \ -t ${timeout_poll} 0.0.0.0 >/dev/null & done wait_local_port_listen $ns $((NR_CLIENTS + 10001)) @@ -155,12 +188,11 @@ for I in `seq 1 $NR_CLIENTS`; do echo "b" | \ timeout ${timeout_test} \ ip netns exec $ns \ - ./mptcp_connect -p $((I+10001)) -w 10 \ + ./mptcp_connect -p $((I+10001)) -w 20 \ -t ${timeout_poll} 127.0.0.1 >/dev/null & done -sleep 1.5 -chk_msk_nr $((NR_CLIENTS*2)) "many msk socket present" +wait_msk_nr $((NR_CLIENTS*2)) "many msk socket present" flush_pids exit $ret