net: lan966x: convert to ndo_hwtstamp_get() and ndo_hwtstamp_set()

The hardware timestamping through ndo_eth_ioctl() is going away.
Convert the lan966x driver to the new API before that can be removed.

After removing the timestamping logic from lan966x_port_ioctl(), the
rest is equivalent to phy_do_ioctl().

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20230801142824.1772134-10-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 33 insertions, 26 deletions

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 73f20683210e..1baa94a98fe3 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -450,39 +450,44 @@ static int lan966x_port_get_parent_id(struct net_device *dev,
 	return 0;
 }
 
-static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr,
-			      int cmd)
+static int lan966x_port_hwtstamp_get(struct net_device *dev,
+				     struct kernel_hwtstamp_config *cfg)
 {
 	struct lan966x_port *port = netdev_priv(dev);
-	int err;
 
-	if (cmd == SIOCSHWTSTAMP) {
-		err = lan966x_ptp_setup_traps(port, ifr);
-		if (err)
-			return err;
-	}
+	if (phy_has_hwtstamp(dev->phydev))
+		return phy_mii_ioctl(dev->phydev, cfg->ifr, SIOCGHWTSTAMP);
 
-	if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) {
-		switch (cmd) {
-		case SIOCSHWTSTAMP:
-			err = lan966x_ptp_hwtstamp_set(port, ifr);
-			if (err)
-				lan966x_ptp_del_traps(port);
+	if (!port->lan966x->ptp)
+		return -EOPNOTSUPP;
 
-			return err;
-		case SIOCGHWTSTAMP:
-			return lan966x_ptp_hwtstamp_get(port, ifr);
-		}
-	}
+	lan966x_ptp_hwtstamp_get(port, cfg);
 
-	if (!dev->phydev)
-		return -ENODEV;
+	return 0;
+}
 
-	err = phy_mii_ioctl(dev->phydev, ifr, cmd);
-	if (err && cmd == SIOCSHWTSTAMP)
-		lan966x_ptp_del_traps(port);
+static int lan966x_port_hwtstamp_set(struct net_device *dev,
+				     struct kernel_hwtstamp_config *cfg,
+				     struct netlink_ext_ack *extack)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+	int err;
 
-	return err;
+	err = lan966x_ptp_setup_traps(port, cfg);
+	if (err)
+		return err;
+
+	if (phy_has_hwtstamp(dev->phydev)) {
+		err = phy_mii_ioctl(dev->phydev, cfg->ifr, SIOCSHWTSTAMP);
+		if (err)
+			lan966x_ptp_del_traps(port);
+		return err;
+	}
+
+	if (!port->lan966x->ptp)
+		return -EOPNOTSUPP;
+
+	return lan966x_ptp_hwtstamp_set(port, cfg, extack);
 }
 
 static const struct net_device_ops lan966x_port_netdev_ops = {
@@ -495,10 +500,12 @@ static const struct net_device_ops lan966x_port_netdev_ops = {
 	.ndo_get_stats64		= lan966x_stats_get,
 	.ndo_set_mac_address		= lan966x_port_set_mac_address,
 	.ndo_get_port_parent_id		= lan966x_port_get_parent_id,
-	.ndo_eth_ioctl			= lan966x_port_ioctl,
+	.ndo_eth_ioctl			= phy_do_ioctl,
 	.ndo_setup_tc			= lan966x_tc_setup,
 	.ndo_bpf			= lan966x_xdp,
 	.ndo_xdp_xmit			= lan966x_xdp_xmit,
+	.ndo_hwtstamp_get		= lan966x_port_hwtstamp_get,
+	.ndo_hwtstamp_set		= lan966x_port_hwtstamp_set,
 };
 
 bool lan966x_netdevice_check(const struct net_device *dev)