linux-kernel - [PATCH net-next 1/3] net: dpaa_eth: convert to ndo_hwtstamp

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Message-ID: <20250508124753.1492742-2-vladimir.oltean@nxp.com>
Date: Thu,  8 May 2025 15:47:51 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: Köry Maincent <kory.maincent@...tlin.com>,
	Madalin Bucur <madalin.bucur@....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>,
	Russell King <linux@...linux.org.uk>,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next 1/3] net: dpaa_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 DPAA1 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>
---
 .../net/ethernet/freescale/dpaa/dpaa_eth.c    | 21 +++++++------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 4948b4906584..d5458a5fb971 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -3089,15 +3089,13 @@ static int dpaa_xdp_xmit(struct net_device *net_dev, int n,
 	return nxmit;
 }
 
-static int dpaa_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+static int dpaa_hwtstamp_set(struct net_device *dev,
+			     struct kernel_hwtstamp_config *config,
+			     struct netlink_ext_ack *extack)
 {
 	struct dpaa_priv *priv = netdev_priv(dev);
-	struct hwtstamp_config config;
 
-	if (copy_from_user(&config, rq->ifr_data, sizeof(config)))
-		return -EFAULT;
-
-	switch (config.tx_type) {
+	switch (config->tx_type) {
 	case HWTSTAMP_TX_OFF:
 		/* Couldn't disable rx/tx timestamping separately.
 		 * Do nothing here.
@@ -3112,7 +3110,7 @@ static int dpaa_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		return -ERANGE;
 	}
 
-	if (config.rx_filter == HWTSTAMP_FILTER_NONE) {
+	if (config->rx_filter == HWTSTAMP_FILTER_NONE) {
 		/* Couldn't disable rx/tx timestamping separately.
 		 * Do nothing here.
 		 */
@@ -3121,11 +3119,10 @@ static int dpaa_ts_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 		priv->mac_dev->set_tstamp(priv->mac_dev->fman_mac, true);
 		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;
 	}
 
-	return copy_to_user(rq->ifr_data, &config, sizeof(config)) ?
-			-EFAULT : 0;
+	return 0;
 }
 
 static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
@@ -3139,9 +3136,6 @@ static int dpaa_ioctl(struct net_device *net_dev, struct ifreq *rq, int cmd)
 						 cmd);
 	}
 
-	if (cmd == SIOCSHWTSTAMP)
-		return dpaa_ts_ioctl(net_dev, rq, cmd);
-
 	return ret;
 }
 
@@ -3160,6 +3154,7 @@ static const struct net_device_ops dpaa_ops = {
 	.ndo_change_mtu = dpaa_change_mtu,
 	.ndo_bpf = dpaa_xdp,
 	.ndo_xdp_xmit = dpaa_xdp_xmit,
+	.ndo_hwtstamp_set = dpaa_hwtstamp_set,
 };
 
 static int dpaa_napi_add(struct net_device *net_dev)
-- 
2.43.0