From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Date: Wed, 13 May 2020 20:22:17 +0000 (+0530)
Subject: examples/l3fwd-graph: check link query failure
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=1d049dc7623e4c0506c9c34dbb168ad9530daae0

examples/l3fwd-graph: check link query failure

Fix unchecked return values reported by coverity.

Coverity issue: 350601
Fixes: ef853f1fd979 ("examples/l3fwd-graph: add ethdev configuration changes")

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Acked-by: Nithin Dabilpuram <ndabilpuram@marvell.com>
---

diff --git a/examples/l3fwd-graph/main.c b/examples/l3fwd-graph/main.c
index 40108a0d3a..c70270c4d1 100644
--- a/examples/l3fwd-graph/main.c
+++ b/examples/l3fwd-graph/main.c
@@ -598,6 +598,7 @@ check_all_ports_link_status(uint32_t port_mask)
 	uint8_t count, all_ports_up, print_flag = 0;
 	struct rte_eth_link link;
 	uint16_t portid;
+	int ret;
 
 	printf("\nChecking link status");
 	fflush(stdout);
@@ -612,7 +613,14 @@ check_all_ports_link_status(uint32_t port_mask)
 			if ((port_mask & (1 << portid)) == 0)
 				continue;
 			memset(&link, 0, sizeof(link));
-			rte_eth_link_get_nowait(portid, &link);
+			ret = rte_eth_link_get_nowait(portid, &link);
+			if (ret < 0) {
+				all_ports_up = 0;
+				if (print_flag == 1)
+					printf("Port %u link get failed: %s\n",
+						portid, rte_strerror(-ret));
+				continue;
+			}
 			/* Print link status if flag set */
 			if (print_flag == 1) {
 				if (link.link_status)