net/dpaa2: fix getting link status

[dpdk.git] / drivers / net / dpaa2 / dpaa2_ethdev.c

diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 38774e2..a81c734 100644 (file)
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -31,6 +31,8 @@
 
 #define DRIVER_LOOPBACK_MODE "drv_loopback"
 #define DRIVER_NO_PREFETCH_MODE "drv_no_prefetch"
+#define CHECK_INTERVAL         100  /* 100ms */
+#define MAX_REPEAT_TIME        90   /* 9s (90 * 100ms) in total */
 
 /* Supported Rx offloads */
 static uint64_t dev_rx_offloads_sup =
@@ -1805,23 +1807,32 @@ error:
 /* return 0 means link status changed, -1 means not changed */
 static int
 dpaa2_dev_link_update(struct rte_eth_dev *dev,
-                       int wait_to_complete __rte_unused)
+                     int wait_to_complete)
 {
        int ret;
        struct dpaa2_dev_priv *priv = dev->data->dev_private;
        struct fsl_mc_io *dpni = (struct fsl_mc_io *)dev->process_private;
        struct rte_eth_link link;
        struct dpni_link_state state = {0};
+       uint8_t count;
 
        if (dpni == NULL) {
                DPAA2_PMD_ERR("dpni is NULL");
                return 0;
        }
 
-       ret = dpni_get_link_state(dpni, CMD_PRI_LOW, priv->token, &state);
-       if (ret < 0) {
-               DPAA2_PMD_DEBUG("error: dpni_get_link_state %d", ret);
-               return -1;
+       for (count = 0; count <= MAX_REPEAT_TIME; count++) {
+               ret = dpni_get_link_state(dpni, CMD_PRI_LOW, priv->token,
+                                         &state);
+               if (ret < 0) {
+                       DPAA2_PMD_DEBUG("error: dpni_get_link_state %d", ret);
+                       return -1;
+               }
+               if (state.up == ETH_LINK_DOWN &&
+                   wait_to_complete)
+                       rte_delay_ms(CHECK_INTERVAL);
+               else
+                       break;
        }
 
        memset(&link, 0, sizeof(struct rte_eth_link));