[PATCH net-next] net: microchip: lan743x: add ethtool nway_reset support

[Nicolai Buchwitz]

Wire phylink_ethtool_nway_reset() as the .nway_reset ethtool operation,
allowing userspace to restart PHY autonegotiation via 'ethtool -r'.

Signed-off-by: Nicolai Buchwitz <nb@xxxxxxxxxxx>
Reviewed-by: Russel King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/microchip/lan743x_ethtool.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.c b/drivers/net/ethernet/microchip/lan743x_ethtool.c
index 8a3c1ecc7866..9195419ecee0 100644
--- a/drivers/net/ethernet/microchip/lan743x_ethtool.c
+++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c
@@ -1079,6 +1079,13 @@ static int lan743x_ethtool_set_eee(struct net_device *netdev,
 	return phylink_ethtool_set_eee(adapter->phylink, eee);
 }
 
+static int lan743x_ethtool_nway_reset(struct net_device *netdev)
+{
+	struct lan743x_adapter *adapter = netdev_priv(netdev);
+
+	return phylink_ethtool_nway_reset(adapter->phylink);
+}
+
 static int
 lan743x_ethtool_set_link_ksettings(struct net_device *netdev,
 				   const struct ethtool_link_ksettings *cmd)
@@ -1369,6 +1376,7 @@ const struct ethtool_ops lan743x_ethtool_ops = {
 	.set_rxfh = lan743x_ethtool_set_rxfh,
 	.get_rxfh_fields = lan743x_ethtool_get_rxfh_fields,
 	.get_ts_info = lan743x_ethtool_get_ts_info,
+	.nway_reset = lan743x_ethtool_nway_reset,
 	.get_eee = lan743x_ethtool_get_eee,
 	.set_eee = lan743x_ethtool_set_eee,
 	.get_link_ksettings = lan743x_ethtool_get_link_ksettings,
-- 
2.39.5