ice: Fix dead device link issue with flow control

Setting Rx or Tx pause parameter currently results in link loss on the
interface, requiring the platform/host to be cold power cycled. Fix it.

Signed-off-by: Akeem G Abodunrin <[email protected]>
Signed-off-by: Anirudh Venkataramanan <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>

diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
index 96923580f2a6c2fdb88c88c2f1e88f0b4154f67c..648acdb4c644b6c62d08d8f99c4307e1537d041f 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
@@ -1517,10 +1517,15 @@ ice_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause)
        }
 
        if (!test_bit(__ICE_DOWN, pf->state)) {
-               /* Give it a little more time to try to come back */
+               /* Give it a little more time to try to come back. If still
+                * down, restart autoneg link or reinitialize the interface.
+                */
                msleep(75);
                if (!test_bit(__ICE_DOWN, pf->state))
                        return ice_nway_reset(netdev);
+
+               ice_down(vsi);
+               ice_up(vsi);
        }
 
        return err;