linux-kernel - [PATCH net-next 2/3] net: dpaa_eth: add ndo_hwtstamp

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Message-ID: <20250508124753.1492742-3-vladimir.oltean@nxp.com>
Date: Thu,  8 May 2025 15:47:52 +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 2/3] net: dpaa_eth: add ndo_hwtstamp_get() implementation

Allow SIOCGHWTSTAMP to retrieve the current timestamping settings
on DPAA1 interfaces. This reflects what has been done in
dpaa_hwtstamp_set().

Tested with hwstamp_ctl -i fm1-mac9.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index d5458a5fb971..5b8d87a0bf82 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -3089,6 +3089,18 @@ static int dpaa_xdp_xmit(struct net_device *net_dev, int n,
 	return nxmit;
 }
 
+static int dpaa_hwtstamp_get(struct net_device *dev,
+			     struct kernel_hwtstamp_config *config)
+{
+	struct dpaa_priv *priv = netdev_priv(dev);
+
+	config->tx_type = priv->tx_tstamp ? HWTSTAMP_TX_ON : HWTSTAMP_TX_OFF;
+	config->rx_filter = priv->rx_tstamp ? HWTSTAMP_FILTER_ALL :
+			    HWTSTAMP_FILTER_NONE;
+
+	return 0;
+}
+
 static int dpaa_hwtstamp_set(struct net_device *dev,
 			     struct kernel_hwtstamp_config *config,
 			     struct netlink_ext_ack *extack)
@@ -3154,6 +3166,7 @@ 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_get = dpaa_hwtstamp_get,
 	.ndo_hwtstamp_set = dpaa_hwtstamp_set,
 };
 
-- 
2.43.0