Verify that, when multiple endpoints are available, subflows
creation proceed even when the first additional subflow creation
fails - due to packet drop on the relevant link
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
v1 -> v2:
- add missing NF kconfig
- add more test-cases (drop, later subflow creation)
---
tools/testing/selftests/net/mptcp/config | 1 +
.../testing/selftests/net/mptcp/mptcp_join.sh | 65 ++++++++++++++++++-
2 files changed, 65 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/mptcp/config b/tools/testing/selftests/net/mptcp/config
index 419e71560fd1..41e94e004bdc 100644
--- a/tools/testing/selftests/net/mptcp/config
+++ b/tools/testing/selftests/net/mptcp/config
@@ -18,4 +18,5 @@ CONFIG_NFT_TPROXY=m
CONFIG_NFT_SOCKET=m
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IPV6_MULTIPLE_TABLES=y
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index 2684ef9c0d42..6d342f9985b8 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -975,6 +975,22 @@ chk_link_usage()
fi
}
+wait_for_tw()
+{
+ local timeout_ms=$((timeout_poll * 1000))
+ local time=0
+ local ns=$1
+
+ while [ $time -lt $timeout_ms ]; do
+ local cnt=`ip netns exec $ns ss -t state time-wait |wc -l`
+
+ [ "$cnt" = 1 ] && return 1
+ time=$((time + 100))
+ sleep 0.1
+ done
+ return 1
+}
+
subflows_tests()
{
reset
@@ -1032,6 +1048,48 @@ subflows_tests()
chk_join_nr "single subflow, dev" 1 1 1
}
+subflows_error_tests()
+{
+ # multiple subflows, with subflow creation error
+ reset
+ ip netns exec $ns1 ./pm_nl_ctl limits 0 2
+ ip netns exec $ns2 ./pm_nl_ctl limits 0 2
+ ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+ ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
+ ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
+ run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+ chk_join_nr "multiple subflows, with failing subflow" 1 1 1
+
+ # multiple subflows, with subflow timeout on MPJ
+ reset
+ ip netns exec $ns1 ./pm_nl_ctl limits 0 2
+ ip netns exec $ns2 ./pm_nl_ctl limits 0 2
+ ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+ ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
+ ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j DROP
+ run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow
+ chk_join_nr "multiple subflows, with subflow timeout" 1 1 1
+
+ # multiple subflows, check that the endpoint corresponding to
+ # closed subflow (due to reset) is not reused if additional
+ # subflows are added later
+ reset
+ ip netns exec $ns1 ./pm_nl_ctl limits 0 1
+ ip netns exec $ns2 ./pm_nl_ctl limits 0 1
+ ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
+ ip netns exec $ns1 iptables -A INPUT -s 10.0.3.2 -p tcp -j REJECT
+ run_tests $ns1 $ns2 10.0.1.1 0 0 0 slow &
+
+ # mpj subflow will be in TW after the reset
+ wait_for_tw $ns2
+ ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow
+ wait
+
+ # additional subflow could be created only if the PM select
+ # the later endpoint, skipping the already used one
+ chk_join_nr "multiple subflows, fair usage on close" 1 1 1
+}
+
signal_address_tests()
{
# add_address, unused
@@ -1840,6 +1898,7 @@ fullmesh_tests()
all_tests()
{
subflows_tests
+ subflows_error_tests
signal_address_tests
link_failure_tests
add_addr_timeout_tests
@@ -1859,6 +1918,7 @@ usage()
{
echo "mptcp_join usage:"
echo " -f subflows_tests"
+ echo " -f subflows_error_tests"
echo " -s signal_address_tests"
echo " -l link_failure_tests"
echo " -t add_addr_timeout_tests"
@@ -1907,11 +1967,14 @@ if [ $do_all_tests -eq 1 ]; then
exit $ret
fi
-while getopts 'fsltra64bpkdmchCS' opt; do
+while getopts 'fesltra64bpkdmchCS' opt; do
case $opt in
f)
subflows_tests
;;
+ e)
+ subflows_error_tests
+ ;;
s)
signal_address_tests
;;
--
2.33.1