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 40108a0..c70270c 100644 (file)
--- 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)