net/thunderx: wait to complete during link update

[dpdk.git] / drivers / net / thunderx / nicvf_ethdev.c

diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index 5f34237..6c3670a 100644 (file)
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -144,16 +144,29 @@ nicvf_periodic_alarm_stop(void (fn)(void *), void *arg)
  * Return 0 means link status changed, -1 means not changed
  */
 static int
-nicvf_dev_link_update(struct rte_eth_dev *dev,
-                     int wait_to_complete __rte_unused)
+nicvf_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 {
+#define CHECK_INTERVAL 100  /* 100ms */
+#define MAX_CHECK_TIME 90   /* 9s (90 * 100ms) in total */
        struct rte_eth_link link;
        struct nicvf *nic = nicvf_pmd_priv(dev);
+       int i;
 
        PMD_INIT_FUNC_TRACE();
 
-       memset(&link, 0, sizeof(link));
-       nicvf_set_eth_link_status(nic, &link);
+       if (wait_to_complete) {
+               /* rte_eth_link_get() might need to wait up to 9 seconds */
+               for (i = 0; i < MAX_CHECK_TIME; i++) {
+                       memset(&link, 0, sizeof(link));
+                       nicvf_set_eth_link_status(nic, &link);
+                       if (link.link_status)
+                               break;
+                       rte_delay_ms(CHECK_INTERVAL);
+               }
+       } else {
+               memset(&link, 0, sizeof(link));
+               nicvf_set_eth_link_status(nic, &link);
+       }
        return nicvf_atomic_write_link_status(dev, &link);
 }