[PATCH v2 2/2] app/test-flow-perf: fix division or module by zero

[Mohammad Iqbal Ahmad <mahmad@marvell.com>]

Fix division or module by zero reported by coverity scan.

Coverity issue: 373870
Fixes: bf3688f1e816 ("app/flow-perf: add insertion rate calculation")

Signed-off-by: Mohammad Iqbal Ahmad <mahmad@marvell.com>
---
 app/test-flow-perf/main.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/test-flow-perf/main.c b/app/test-flow-perf/main.c
index 4a9206803a..0a542b0d87 100644
--- a/app/test-flow-perf/main.c
+++ b/app/test-flow-perf/main.c
@@ -848,7 +848,12 @@ args_parse(int argc, char **argv)
 			/* Control */
 			if (strcmp(lgopts[opt_idx].name,
 					"rules-batch") == 0) {
-				rules_batch = atoi(optarg);
+				n = atoi(optarg);
+				if (n > 0)
+					rules_batch = n;
+				else
+					rte_exit(EXIT_FAILURE,
+							"flow rules_batch should be > 0\n");
 			}
 			if (strcmp(lgopts[opt_idx].name,
 					"rules-count") == 0) {
-- 
2.25.1