The sch_ets.sh test requires the cls_basic kernel module to function
properly. If the kernel is compiled without CONFIG_NET_CLS_BASIC,
the test fails instead of being gracefully skipped.

Add a check to attempt loading the cls_basic module. If modprobe fails,
the test will be skipped.

Signed-off-by: Aleksei Oladko <aleksey.oladko@virtuozzo.com>
---
 tools/testing/selftests/net/forwarding/sch_ets_core.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/net/forwarding/sch_ets_core.sh b/tools/testing/selftests/net/forwarding/sch_ets_core.sh
index 0453210271dc..ff3ac3e43c33 100644
--- a/tools/testing/selftests/net/forwarding/sch_ets_core.sh
+++ b/tools/testing/selftests/net/forwarding/sch_ets_core.sh
@@ -98,6 +98,7 @@ classifier_mode()
 {
 	echo "Running in classifier mode"
 	ets_delete_qdisc
+	modprobe cls_basic || exit $ksft_skip
 	ETS_CHANGE_QDISC=ets_change_qdisc_classifier
 }
 
-- 
2.43.0