net: sparx5: convert to ndo_hwtstamp_get() and ndo_hwtstamp_set()

The hardware timestamping through ndo_eth_ioctl() is going away.
Convert the sparx5 driver to the new API before that can be removed.

After removing the timestamping logic from sparx5_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>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Link: https://lore.kernel.org/r/20230801142824.1772134-9-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/microchip/sparx5/sparx5_main.h

@@ -205,7 +205,7 @@ enum sparx5_core_clockfreq {
 struct sparx5_phc {
 	struct ptp_clock *clock;
 	struct ptp_clock_info info;
-	struct hwtstamp_config hwtstamp_config;
+	struct kernel_hwtstamp_config hwtstamp_config;
 	struct sparx5 *sparx5;
 	u8 index;
 };
@@ -388,8 +388,11 @@ void sparx5_unregister_netdevs(struct sparx5 *sparx5);
 /* sparx5_ptp.c */
 int sparx5_ptp_init(struct sparx5 *sparx5);
 void sparx5_ptp_deinit(struct sparx5 *sparx5);
-int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr);
-int sparx5_ptp_hwtstamp_get(struct sparx5_port *port, struct ifreq *ifr);
+int sparx5_ptp_hwtstamp_set(struct sparx5_port *port,
+			    struct kernel_hwtstamp_config *cfg,
+			    struct netlink_ext_ack *extack);
+void sparx5_ptp_hwtstamp_get(struct sparx5_port *port,
+			     struct kernel_hwtstamp_config *cfg);
 void sparx5_ptp_rxtstamp(struct sparx5 *sparx5, struct sk_buff *skb,
 			 u64 timestamp);
 int sparx5_ptp_txtstamp_request(struct sparx5_port *port,

drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c

@@ -210,22 +210,37 @@ static int sparx5_get_port_parent_id(struct net_device *dev,
 	return 0;
 }
 
-static int sparx5_port_ioctl(struct net_device *dev, struct ifreq *ifr,
-			     int cmd)
+static int sparx5_port_hwtstamp_get(struct net_device *dev,
+				    struct kernel_hwtstamp_config *cfg)
 {
 	struct sparx5_port *sparx5_port = netdev_priv(dev);
 	struct sparx5 *sparx5 = sparx5_port->sparx5;
 
-	if (!phy_has_hwtstamp(dev->phydev) && sparx5->ptp) {
-		switch (cmd) {
-		case SIOCSHWTSTAMP:
-			return sparx5_ptp_hwtstamp_set(sparx5_port, ifr);
-		case SIOCGHWTSTAMP:
-			return sparx5_ptp_hwtstamp_get(sparx5_port, ifr);
-		}
-	}
+	if (phy_has_hwtstamp(dev->phydev))
+		return phy_mii_ioctl(dev->phydev, cfg->ifr, SIOCGHWTSTAMP);
+
+	if (!sparx5->ptp)
+		return -EOPNOTSUPP;
+
+	sparx5_ptp_hwtstamp_get(sparx5_port, cfg);
+
+	return 0;
+}
+
+static int sparx5_port_hwtstamp_set(struct net_device *dev,
+				    struct kernel_hwtstamp_config *cfg,
+				    struct netlink_ext_ack *extack)
+{
+	struct sparx5_port *sparx5_port = netdev_priv(dev);
+	struct sparx5 *sparx5 = sparx5_port->sparx5;
+
+	if (phy_has_hwtstamp(dev->phydev))
+		return phy_mii_ioctl(dev->phydev, cfg->ifr, SIOCSHWTSTAMP);
+
+	if (!sparx5->ptp)
+		return -EOPNOTSUPP;
 
-	return phy_mii_ioctl(dev->phydev, ifr, cmd);
+	return sparx5_ptp_hwtstamp_set(sparx5_port, cfg, extack);
 }
 
 static const struct net_device_ops sparx5_port_netdev_ops = {
@@ -238,8 +253,10 @@ static const struct net_device_ops sparx5_port_netdev_ops = {
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_get_stats64        = sparx5_get_stats64,
 	.ndo_get_port_parent_id = sparx5_get_port_parent_id,
-	.ndo_eth_ioctl          = sparx5_port_ioctl,
+	.ndo_eth_ioctl          = phy_do_ioctl,
 	.ndo_setup_tc           = sparx5_port_setup_tc,
+	.ndo_hwtstamp_get       = sparx5_port_hwtstamp_get,
+	.ndo_hwtstamp_set       = sparx5_port_hwtstamp_set,
 };
 
 bool sparx5_netdevice_check(const struct net_device *dev)

drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c

@@ -74,10 +74,11 @@ static u64 sparx5_ptp_get_nominal_value(struct sparx5 *sparx5)
 	return res;
 }
 
-int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr)
+int sparx5_ptp_hwtstamp_set(struct sparx5_port *port,
+			    struct kernel_hwtstamp_config *cfg,
+			    struct netlink_ext_ack *extack)
 {
 	struct sparx5 *sparx5 = port->sparx5;
-	struct hwtstamp_config cfg;
 	struct sparx5_phc *phc;
 
 	/* For now don't allow to run ptp on ports that are part of a bridge,
@@ -88,10 +89,7 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr)
 	if (test_bit(port->portno, sparx5->bridge_mask))
 		return -EINVAL;
 
-	if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
-		return -EFAULT;
-
-	switch (cfg.tx_type) {
+	switch (cfg->tx_type) {
 	case HWTSTAMP_TX_ON:
 		port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP;
 		break;
@@ -105,7 +103,7 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr)
 		return -ERANGE;
 	}
 
-	switch (cfg.rx_filter) {
+	switch (cfg->rx_filter) {
 	case HWTSTAMP_FILTER_NONE:
 		break;
 	case HWTSTAMP_FILTER_ALL:
@@ -122,7 +120,7 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr)
 	case HWTSTAMP_FILTER_PTP_V2_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
 	case HWTSTAMP_FILTER_NTP_ALL:
-		cfg.rx_filter = HWTSTAMP_FILTER_ALL;
+		cfg->rx_filter = HWTSTAMP_FILTER_ALL;
 		break;
 	default:
 		return -ERANGE;
@@ -131,20 +129,20 @@ int sparx5_ptp_hwtstamp_set(struct sparx5_port *port, struct ifreq *ifr)
 	/* Commit back the result & save it */
 	mutex_lock(&sparx5->ptp_lock);
 	phc = &sparx5->phc[SPARX5_PHC_PORT];
-	memcpy(&phc->hwtstamp_config, &cfg, sizeof(cfg));
+	phc->hwtstamp_config = *cfg;
 	mutex_unlock(&sparx5->ptp_lock);
 
-	return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+	return 0;
 }
 
-int sparx5_ptp_hwtstamp_get(struct sparx5_port *port, struct ifreq *ifr)
+void sparx5_ptp_hwtstamp_get(struct sparx5_port *port,
+			     struct kernel_hwtstamp_config *cfg)
 {
 	struct sparx5 *sparx5 = port->sparx5;
 	struct sparx5_phc *phc;
 
 	phc = &sparx5->phc[SPARX5_PHC_PORT];
-	return copy_to_user(ifr->ifr_data, &phc->hwtstamp_config,
-			    sizeof(phc->hwtstamp_config)) ? -EFAULT : 0;
+	*cfg = phc->hwtstamp_config;
 }
 
 static void sparx5_ptp_classify(struct sparx5_port *port, struct sk_buff *skb,