net/ixgbe: fix link status

The link status for 82599eb got from link status register was not
correct, check the enable/disable flag of tx laser when getting the link
status, set the link status down if tx laser disabled since the tx laser
flag could be set correctly when up/down the link status.

Fixes: dc66e5fd01b9 ("net/ixgbe: improve link state check on VF")
Cc: stable@dpdk.org
Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
Reviewed-by: Wei Zhao <wei.zhao1@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 9c386f5..30c0379 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -2912,6 +2912,7 @@ ixgbe_dev_set_link_up(struct rte_eth_dev *dev)
        } else {
                /* Turn on the laser */
                ixgbe_enable_tx_laser(hw);
+               ixgbe_dev_link_update(dev, 0);
        }
 
        return 0;
@@ -2942,6 +2943,7 @@ ixgbe_dev_set_link_down(struct rte_eth_dev *dev)
        } else {
                /* Turn off the laser */
                ixgbe_disable_tx_laser(hw);
+               ixgbe_dev_link_update(dev, 0);
        }
 
        return 0;
@@ -4116,6 +4118,7 @@ ixgbe_dev_link_update_share(struct rte_eth_dev *dev,
        int link_up;
        int diag;
        int wait = 1;
+       u32 esdp_reg;
 
        memset(&link, 0, sizeof(link));
        link.link_status = ETH_LINK_DOWN;
@@ -4143,6 +4146,10 @@ ixgbe_dev_link_update_share(struct rte_eth_dev *dev,
                return rte_eth_linkstatus_set(dev, &link);
        }
 
+       esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
+       if ((esdp_reg & IXGBE_ESDP_SDP3))
+               link_up = 0;
+
        if (link_up == 0) {
                if (ixgbe_get_media_type(hw) == ixgbe_media_type_fiber) {
                        intr->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;