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Message-Id: <20251114-net-next-mptcp-sft-count-cache-stats-timeout-v1-8-863cb04e1b7b@kernel.org>
Date: Fri, 14 Nov 2025 19:12:12 +0100
From: "Matthieu Baerts (NGI0)" <matttbe@...nel.org>
To: Mat Martineau <martineau@...nel.org>, Geliang Tang <geliang@...nel.org>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Simon Horman <horms@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, mptcp@...ts.linux.dev,
linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
"Matthieu Baerts (NGI0)" <matttbe@...nel.org>
Subject: [PATCH net-next 8/8] selftests: mptcp: get stats just before
timing out
Recently, some debugging happened around a test that was timing out. The
stats were showing connections being closed which was confusing because
the closing state was caused by the timeout stopping the transfer.
To avoid such confusion, the timeout is no longer done per mptcp_connect
process, but separately. In case of timeout, the stats are now printed,
then the apps are killed.
The stats will still be printed after the kill, but that's fine, and
this might even be useful, just in case. Timeout should be exceptional.
Reviewed-by: Geliang Tang <geliang@...nel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@...nel.org>
---
tools/testing/selftests/net/mptcp/mptcp_connect.sh | 26 +++++++++++------
tools/testing/selftests/net/mptcp/mptcp_join.sh | 34 +++++++++++++---------
tools/testing/selftests/net/mptcp/mptcp_lib.sh | 13 +++++++++
tools/testing/selftests/net/mptcp/mptcp_sockopt.sh | 26 +++++++++++------
tools/testing/selftests/net/mptcp/simult_flows.sh | 29 +++++++++++-------
5 files changed, 86 insertions(+), 42 deletions(-)
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
index e0bfd9b4730c..a6447f7a31fe 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -393,27 +393,35 @@ do_transfer()
mptcp_lib_nstat_init "${connector_ns}"
fi
- timeout ${timeout_test} \
- ip netns exec ${listener_ns} \
- ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
- $extra_args $local_addr < "$sin" > "$sout" &
+ ip netns exec ${listener_ns} \
+ ./mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
+ $extra_args $local_addr < "$sin" > "$sout" &
local spid=$!
mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}"
local start
start=$(date +%s%3N)
- timeout ${timeout_test} \
- ip netns exec ${connector_ns} \
- ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
- $extra_args $connect_addr < "$cin" > "$cout" &
+ ip netns exec ${connector_ns} \
+ ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
+ $extra_args $connect_addr < "$cin" > "$cout" &
local cpid=$!
+ mptcp_lib_wait_timeout "${timeout_test}" "${listener_ns}" \
+ "${connector_ns}" "${port}" "${cpid}" "${spid}" &
+ local timeout_pid=$!
+
wait $cpid
local retc=$?
wait $spid
local rets=$?
+ if kill -0 $timeout_pid; then
+ # Finished before the timeout: kill the background job
+ mptcp_lib_kill_group_wait $timeout_pid
+ timeout_pid=0
+ fi
+
local stop
stop=$(date +%s%3N)
@@ -433,7 +441,7 @@ do_transfer()
local duration
duration=$((stop-start))
printf "(duration %05sms) " "${duration}"
- if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
+ if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ] || [ ${timeout_pid} -ne 0 ]; then
mptcp_lib_pr_fail "client exit code $retc, server $rets"
mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}"
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 54bac074f184..be61612f68fe 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -1024,38 +1024,38 @@ do_transfer()
if [ "$test_linkfail" -gt 1 ];then
listener_in="${sinfail}"
fi
- timeout ${timeout_test} \
- ip netns exec ${listener_ns} \
- ./mptcp_connect -t ${timeout_poll} -l -p ${port} -s ${srv_proto} \
- ${extra_srv_args} "${bind_addr}" < "${listener_in}" > "${sout}" &
+ ip netns exec ${listener_ns} \
+ ./mptcp_connect -t ${timeout_poll} -l -p ${port} -s ${srv_proto} \
+ ${extra_srv_args} "${bind_addr}" < "${listener_in}" > "${sout}" &
local spid=$!
mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}"
extra_cl_args="$extra_args $extra_cl_args"
if [ "$test_linkfail" -eq 0 ];then
- timeout ${timeout_test} \
- ip netns exec ${connector_ns} \
- ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
- $extra_cl_args $connect_addr < "$cin" > "$cout" &
+ ip netns exec ${connector_ns} \
+ ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
+ $extra_cl_args $connect_addr < "$cin" > "$cout" &
elif [ "$test_linkfail" -eq 1 ] || [ "$test_linkfail" -eq 2 ];then
connector_in="${cinsent}"
( cat "$cinfail" ; sleep 2; link_failure $listener_ns ; cat "$cinfail" ) | \
tee "$cinsent" | \
- timeout ${timeout_test} \
ip netns exec ${connector_ns} \
./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
$extra_cl_args $connect_addr > "$cout" &
else
connector_in="${cinsent}"
tee "$cinsent" < "$cinfail" | \
- timeout ${timeout_test} \
- ip netns exec ${connector_ns} \
- ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
- $extra_cl_args $connect_addr > "$cout" &
+ ip netns exec ${connector_ns} \
+ ./mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
+ $extra_cl_args $connect_addr > "$cout" &
fi
local cpid=$!
+ mptcp_lib_wait_timeout "${timeout_test}" "${listener_ns}" \
+ "${connector_ns}" "${port}" "${cpid}" "${spid}" &
+ local timeout_pid=$!
+
pm_nl_set_endpoint $listener_ns $connector_ns $connect_addr
check_cestab $listener_ns $connector_ns
@@ -1064,12 +1064,18 @@ do_transfer()
wait $spid
local rets=$?
+ if kill -0 $timeout_pid; then
+ # Finished before the timeout: kill the background job
+ mptcp_lib_kill_group_wait $timeout_pid
+ timeout_pid=0
+ fi
+
cond_stop_capture
mptcp_lib_nstat_get "${listener_ns}"
mptcp_lib_nstat_get "${connector_ns}"
- if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
+ if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ] || [ ${timeout_pid} -ne 0 ]; then
fail_test "client exit code $retc, server $rets"
mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}"
return 1
diff --git a/tools/testing/selftests/net/mptcp/mptcp_lib.sh b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
index 91ec75ddcb96..5fea7e7df628 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_lib.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_lib.sh
@@ -350,6 +350,19 @@ mptcp_lib_evts_get_info() {
mptcp_lib_get_info_value "${1}" "^type:${3:-1},"
}
+mptcp_lib_wait_timeout() {
+ local timeout_test="${1}"
+ local listener_ns="${2}"
+ local connector_ns="${3}"
+ local port="${4}"
+ shift 4 # rest are PIDs
+
+ sleep "${timeout_test}"
+ mptcp_lib_print_err "timeout"
+ mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}"
+ kill "${@}" 2>/dev/null
+}
+
# $1: PID
mptcp_lib_kill_wait() {
[ "${1}" -eq 0 ] && return 0
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index 6cde7429104b..ab8bce06b262 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -172,31 +172,39 @@ do_transfer()
mptcp_lib_nstat_init "${listener_ns}"
mptcp_lib_nstat_init "${connector_ns}"
- timeout ${timeout_test} \
- ip netns exec ${listener_ns} \
- $mptcp_connect -t ${timeout_poll} -l -M 1 -p $port -s ${srv_proto} -c "${cmsg}" \
- ${local_addr} < "$sin" > "$sout" &
+ ip netns exec ${listener_ns} \
+ $mptcp_connect -t ${timeout_poll} -l -M 1 -p $port -s ${srv_proto} -c "${cmsg}" \
+ ${local_addr} < "$sin" > "$sout" &
local spid=$!
mptcp_lib_wait_local_port_listen "${listener_ns}" "${port}"
- timeout ${timeout_test} \
- ip netns exec ${connector_ns} \
- $mptcp_connect -t ${timeout_poll} -M 2 -p $port -s ${cl_proto} -c "${cmsg}" \
- $connect_addr < "$cin" > "$cout" &
+ ip netns exec ${connector_ns} \
+ $mptcp_connect -t ${timeout_poll} -M 2 -p $port -s ${cl_proto} -c "${cmsg}" \
+ $connect_addr < "$cin" > "$cout" &
local cpid=$!
+ mptcp_lib_wait_timeout "${timeout_test}" "${listener_ns}" \
+ "${connector_ns}" "${port}" "${cpid}" "${spid}" &
+ local timeout_pid=$!
+
wait $cpid
local retc=$?
wait $spid
local rets=$?
+ if kill -0 $timeout_pid; then
+ # Finished before the timeout: kill the background job
+ mptcp_lib_kill_group_wait $timeout_pid
+ timeout_pid=0
+ fi
+
mptcp_lib_nstat_get "${listener_ns}"
mptcp_lib_nstat_get "${connector_ns}"
print_title "Transfer ${ip:2}"
- if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ]; then
+ if [ ${rets} -ne 0 ] || [ ${retc} -ne 0 ] || [ ${timeout_pid} -ne 0 ]; then
mptcp_lib_pr_fail "client exit code $retc, server $rets"
mptcp_lib_pr_err_stats "${listener_ns}" "${connector_ns}" "${port}"
diff --git a/tools/testing/selftests/net/mptcp/simult_flows.sh b/tools/testing/selftests/net/mptcp/simult_flows.sh
index 503cb59571a4..806aaa7d2d61 100755
--- a/tools/testing/selftests/net/mptcp/simult_flows.sh
+++ b/tools/testing/selftests/net/mptcp/simult_flows.sh
@@ -158,25 +158,33 @@ do_transfer()
mptcp_lib_nstat_init "${ns3}"
mptcp_lib_nstat_init "${ns1}"
- timeout ${timeout_test} \
- ip netns exec ${ns3} \
- ./mptcp_connect -jt ${timeout_poll} -l -p $port -T $max_time \
- 0.0.0.0 < "$sin" > "$sout" &
+ ip netns exec ${ns3} \
+ ./mptcp_connect -jt ${timeout_poll} -l -p $port -T $max_time \
+ 0.0.0.0 < "$sin" > "$sout" &
local spid=$!
mptcp_lib_wait_local_port_listen "${ns3}" "${port}"
- timeout ${timeout_test} \
- ip netns exec ${ns1} \
- ./mptcp_connect -jt ${timeout_poll} -p $port -T $max_time \
- 10.0.3.3 < "$cin" > "$cout" &
+ ip netns exec ${ns1} \
+ ./mptcp_connect -jt ${timeout_poll} -p $port -T $max_time \
+ 10.0.3.3 < "$cin" > "$cout" &
local cpid=$!
+ mptcp_lib_wait_timeout "${timeout_test}" "${ns3}" "${ns1}" "${port}" \
+ "${cpid}" "${spid}" &
+ local timeout_pid=$!
+
wait $cpid
local retc=$?
wait $spid
local rets=$?
+ if kill -0 $timeout_pid; then
+ # Finished before the timeout: kill the background job
+ mptcp_lib_kill_group_wait $timeout_pid
+ timeout_pid=0
+ fi
+
if $capture; then
sleep 1
kill ${cappid_listener}
@@ -191,8 +199,9 @@ do_transfer()
cmp $cin $sout > /dev/null 2>&1
local cmpc=$?
- if [ $retc -eq 0 ] && [ $rets -eq 0 ] && \
- [ $cmpc -eq 0 ] && [ $cmps -eq 0 ]; then
+ if [ $retc -eq 0 ] && [ $rets -eq 0 ] &&
+ [ $cmpc -eq 0 ] && [ $cmps -eq 0 ] &&
+ [ $timeout_pid -eq 0 ]; then
printf "%-16s" " max $max_time "
mptcp_lib_pr_ok
cat "$capout"
--
2.51.0
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