test: check flow classifier creation

'cls->cls' will be NULL if flow classifier create has failed,
then segmentation fault will occur if the variable is used.

This patch fixed it.

Fixes: 9c9befea4f57 ("test: add flow classify unit tests")
Cc: stable@dpdk.org
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>

diff --git a/app/test/test_flow_classify.c b/app/test/test_flow_classify.c
index ef0b6fdd5ca55f901a0fc4a33a84a6bb098504e1..951606f2481096a0d62419f3b90417bc6b7dbb61 100644 (file)
--- a/app/test/test_flow_classify.c
+++ b/app/test/test_flow_classify.c
@@ -828,6 +828,12 @@ test_flow_classify(void)
        cls_params.name = "flow_classifier";
        cls_params.socket_id = 0;
        cls->cls = rte_flow_classifier_create(&cls_params);
+       if (cls->cls == NULL) {
+               printf("Line %i: flow classifier create has failed!\n",
+                      __LINE__);
+               rte_free(cls);
+               return TEST_FAILED;
+       }
 
        /* initialise ACL table params */
        table_acl_params.n_rule_fields = RTE_DIM(ipv4_defs);