linux-kernel - [PATCH net-next 1/2] net: dpaa2-eth: convert to ndo_hwtstamp

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Message-ID: <20250508134102.1747075-1-vladimir.oltean@nxp.com>
Date: Thu,  8 May 2025 16:41:01 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: Köry Maincent <kory.maincent@...tlin.com>,
	Ioana Ciornei <ioana.ciornei@....com>,
	Andrew Lunn <andrew@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next 1/2] net: dpaa2-eth: convert to ndo_hwtstamp_set()

New timestamping API was introduced in commit 66f7223039c0 ("net: add
NDOs for configuring hardware timestamping") from kernel v6.6. It is
time to convert the DPAA2 Ethernet driver to the new API, so that the
ndo_eth_ioctl() path can be removed completely.

This driver only responds to SIOCSHWTSTAMP (not SIOCGHWTSTAMP) so
convert just that.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Tested-by: Vladimir Oltean <vladimir.oltean@....com> # LX2160A
---
 .../net/ethernet/freescale/dpaa2/dpaa2-eth.c  | 25 ++++++++-----------
 1 file changed, 10 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index 29886a8ba73f..13b44fc170dc 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -2585,40 +2585,37 @@ static int dpaa2_eth_set_features(struct net_device *net_dev,
 	return 0;
 }
 
-static int dpaa2_eth_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+static int dpaa2_eth_hwtstamp_set(struct net_device *dev,
+				  struct kernel_hwtstamp_config *config,
+				  struct netlink_ext_ack *extack)
 {
 	struct dpaa2_eth_priv *priv = netdev_priv(dev);
-	struct hwtstamp_config config;
 
 	if (!dpaa2_ptp)
 		return -EINVAL;
 
-	if (copy_from_user(&config, rq->ifr_data, sizeof(config)))
-		return -EFAULT;
-
-	switch (config.tx_type) {
+	switch (config->tx_type) {
 	case HWTSTAMP_TX_OFF:
 	case HWTSTAMP_TX_ON:
 	case HWTSTAMP_TX_ONESTEP_SYNC:
-		priv->tx_tstamp_type = config.tx_type;
+		priv->tx_tstamp_type = config->tx_type;
 		break;
 	default:
 		return -ERANGE;
 	}
 
-	if (config.rx_filter == HWTSTAMP_FILTER_NONE) {
+	if (config->rx_filter == HWTSTAMP_FILTER_NONE) {
 		priv->rx_tstamp = false;
 	} else {
 		priv->rx_tstamp = true;
 		/* TS is set for all frame types, not only those requested */
-		config.rx_filter = HWTSTAMP_FILTER_ALL;
+		config->rx_filter = HWTSTAMP_FILTER_ALL;
 	}
 
 	if (priv->tx_tstamp_type == HWTSTAMP_TX_ONESTEP_SYNC)
 		dpaa2_ptp_onestep_reg_update_method(priv);
 
-	return copy_to_user(rq->ifr_data, &config, sizeof(config)) ?
-			-EFAULT : 0;
+	return 0;
 }
 
 static int dpaa2_eth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
@@ -2626,9 +2623,6 @@ static int dpaa2_eth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	struct dpaa2_eth_priv *priv = netdev_priv(dev);
 	int err;
 
-	if (cmd == SIOCSHWTSTAMP)
-		return dpaa2_eth_ts_ioctl(dev, rq, cmd);
-
 	mutex_lock(&priv->mac_lock);
 
 	if (dpaa2_eth_is_type_phy(priv)) {
@@ -3034,7 +3028,8 @@ static const struct net_device_ops dpaa2_eth_ops = {
 	.ndo_xsk_wakeup = dpaa2_xsk_wakeup,
 	.ndo_setup_tc = dpaa2_eth_setup_tc,
 	.ndo_vlan_rx_add_vid = dpaa2_eth_rx_add_vid,
-	.ndo_vlan_rx_kill_vid = dpaa2_eth_rx_kill_vid
+	.ndo_vlan_rx_kill_vid = dpaa2_eth_rx_kill_vid,
+	.ndo_hwtstamp_set = dpaa2_eth_hwtstamp_set,
 };
 
 static void dpaa2_eth_cdan_cb(struct dpaa2_io_notification_ctx *ctx)
-- 
2.43.0