ixgbe/base: wait longer for VF link status

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
[Thomas: split patch]

diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c
index af0e0fd..a2d6e61 100644 (file)
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c
@@ -515,6 +515,21 @@ s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
        if (!(links_reg & IXGBE_LINKS_UP))
                goto out;
 
+       /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+        * before the link status is correct
+        */
+       if (mac->type == ixgbe_mac_82599_vf) {
+               int i;
+
+               for (i = 0; i < 5; i++) {
+                       usec_delay(100);
+                       links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+
+                       if (!(links_reg & IXGBE_LINKS_UP))
+                               goto out;
+               }
+       }
+
        switch (links_reg & IXGBE_LINKS_SPEED_82599) {
        case IXGBE_LINKS_SPEED_10G_82599:
                *speed = IXGBE_LINK_SPEED_10GB_FULL;