From: Ouyang Changchun <changchun.ouyang@intel.com>
Date: Tue, 7 Oct 2014 08:12:14 +0000 (+0200)
Subject: ixgbe/base: wait longer for VF link status
X-Git-Tag: spdx-start~10362
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6a236f9625397b0347c37de93db1784f05d04919;p=dpdk.git

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 af0e0fd21c..a2d6e61488 100644
--- 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;