doc: fix typo in l2fwd-crypto guide

[dpdk.git] / doc / guides / sample_app_ug / link_status_intr.rst

diff --git a/doc/guides/sample_app_ug/link_status_intr.rst b/doc/guides/sample_app_ug/link_status_intr.rst
index cfb1bcd..5283be8 100644 (file)
--- a/doc/guides/sample_app_ug/link_status_intr.rst
+++ b/doc/guides/sample_app_ug/link_status_intr.rst
@@ -164,6 +164,7 @@ An example callback function that has been written as indicated below.
     lsi_event_callback(uint16_t port_id, enum rte_eth_event_type type, void *param)
     {
         struct rte_eth_link link;
+        int ret;
 
         RTE_SET_USED(param);
 
@@ -171,9 +172,11 @@ An example callback function that has been written as indicated below.
 
         printf("Event type: %s\n", type == RTE_ETH_EVENT_INTR_LSC ? "LSC interrupt" : "unknown event");
 
-        rte_eth_link_get_nowait(port_id, &link);
-
-        if (link.link_status) {
+        ret = rte_eth_link_get_nowait(port_id, &link);
+        if (ret < 0) {
+            printf("Failed to get port %d link status: %s\n\n",
+                   port_id, rte_strerror(-ret));
+        } else if (link.link_status) {
             printf("Port %d Link Up - speed %u Mbps - %s\n\n", port_id, (unsigned)link.link_speed,
                   (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? ("full-duplex") : ("half-duplex"));
         } else