selftests: mptcp: connect: skip TFO tests if not supported

Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of TCP_FASTOPEN socket option with MPTCP connections introduced by commit 4ffb0a0 ("mptcp: add TCP_FASTOPEN sock option"). It is possible to look for "mptcp_fastopen_" in kallsyms to know if the feature is supported or not. Link: multipath-tcp/mptcp_net-next#368 Fixes: ca7ae89 ("selftests: mptcp: mptfo Initiator/Listener") Signed-off-by: Matthieu Baerts <[email protected]>
intel-lab-lkp · May 22, 2023 · 81efeaf · 81efeaf
1 parent 5b5270e
commit 81efeaf
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.sh b/tools/testing/selftests/net/mptcp/mptcp_connect.sh
@@ -777,6 +777,11 @@ run_tests_peekmode()
 
 run_tests_mptfo()
 {
+	if ! mptcp_lib_kallsyms_has "mptcp_fastopen_"; then
+		echo "INFO: TFO not supported by the kernel: SKIP"
+		return
+	fi
+
 	echo "INFO: with MPTFO start"
 	ip netns exec "$ns1" sysctl -q net.ipv4.tcp_fastopen=2
 	ip netns exec "$ns2" sysctl -q net.ipv4.tcp_fastopen=1