bcm63xx_enet: implement reset autoneg ethtool callback

Implement the rset_nway ethtool callback which uses libphy generic
autonegotiation restart function.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
index e46466c..bc1a994 100644 (file)
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -1328,6 +1328,20 @@ static void bcm_enet_get_ethtool_stats(struct net_device *netdev,
        mutex_unlock(&priv->mib_update_lock);
 }
 
+static int bcm_enet_nway_reset(struct net_device *dev)
+{
+       struct bcm_enet_priv *priv;
+
+       priv = netdev_priv(dev);
+       if (priv->has_phy) {
+               if (!priv->phydev)
+                       return -ENODEV;
+               return genphy_restart_aneg(priv->phydev);
+       }
+
+       return -EOPNOTSUPP;
+}
+
 static int bcm_enet_get_settings(struct net_device *dev,
                                 struct ethtool_cmd *cmd)
 {
@@ -1470,6 +1484,7 @@ static const struct ethtool_ops bcm_enet_ethtool_ops = {
        .get_strings            = bcm_enet_get_strings,
        .get_sset_count         = bcm_enet_get_sset_count,
        .get_ethtool_stats      = bcm_enet_get_ethtool_stats,
+       .nway_reset             = bcm_enet_nway_reset,
        .get_settings           = bcm_enet_get_settings,
        .set_settings           = bcm_enet_set_settings,
        .get_drvinfo            = bcm_enet_get_drvinfo,