netdev - [PATCH net-next 5/6] IB/IPoIB: Add support for hwtstamp get/set ndos

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Message-ID: <1761819910-1011051-6-git-send-email-tariqt@nvidia.com>
Date: Thu, 30 Oct 2025 12:25:09 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David
 S. Miller" <davem@...emloft.net>
CC: Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>,
	Jason Gunthorpe <jgg@...pe.ca>, Tariq Toukan <tariqt@...dia.com>, Mark Bloch
	<mbloch@...dia.com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann
	<daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, "John
 Fastabend" <john.fastabend@...il.com>, Richard Cochran
	<richardcochran@...il.com>, <linux-rdma@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
	<bpf@...r.kernel.org>, Gal Pressman <gal@...dia.com>, Carolina Jubran
	<cjubran@...dia.com>, Cosmin Ratiu <cratiu@...dia.com>
Subject: [PATCH net-next 5/6] IB/IPoIB: Add support for hwtstamp get/set ndos

From: Carolina Jubran <cjubran@...dia.com>

Add support for the ndo_hwtstamp_get and ndo_hwtstamp_set operations in
IPoIB. This allows lower devices to handle hardware timestamp
configuration through the new ndos instead of the legacy ioctls.

Signed-off-by: Carolina Jubran <cjubran@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/infiniband/ulp/ipoib/ipoib_main.c | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 5b4d76e97437..300afc27c561 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1825,6 +1825,31 @@ static int ipoib_ioctl(struct net_device *dev, struct ifreq *ifr,
 	return priv->rn_ops->ndo_eth_ioctl(dev, ifr, cmd);
 }
 
+static int ipoib_hwtstamp_get(struct net_device *dev,
+			      struct kernel_hwtstamp_config *config)
+{
+	struct ipoib_dev_priv *priv = ipoib_priv(dev);
+
+	if (!priv->rn_ops->ndo_hwtstamp_get)
+		/* legacy */
+		return dev_eth_ioctl(dev, config->ifr, SIOCGHWTSTAMP);
+
+	return priv->rn_ops->ndo_hwtstamp_get(dev, config);
+}
+
+static int ipoib_hwtstamp_set(struct net_device *dev,
+			      struct kernel_hwtstamp_config *config,
+			      struct netlink_ext_ack *extack)
+{
+	struct ipoib_dev_priv *priv = ipoib_priv(dev);
+
+	if (!priv->rn_ops->ndo_hwtstamp_set)
+		/* legacy */
+		return dev_eth_ioctl(dev, config->ifr, SIOCSHWTSTAMP);
+
+	return priv->rn_ops->ndo_hwtstamp_set(dev, config, extack);
+}
+
 static int ipoib_dev_init(struct net_device *dev)
 {
 	struct ipoib_dev_priv *priv = ipoib_priv(dev);
@@ -2149,6 +2174,8 @@ static const struct net_device_ops ipoib_netdev_ops_pf = {
 	.ndo_set_mac_address	 = ipoib_set_mac,
 	.ndo_get_stats64	 = ipoib_get_stats,
 	.ndo_eth_ioctl		 = ipoib_ioctl,
+	.ndo_hwtstamp_get	 = ipoib_hwtstamp_get,
+	.ndo_hwtstamp_set	 = ipoib_hwtstamp_set,
 };
 
 static const struct net_device_ops ipoib_netdev_ops_vf = {
@@ -2164,6 +2191,8 @@ static const struct net_device_ops ipoib_netdev_ops_vf = {
 	.ndo_get_iflink		 = ipoib_get_iflink,
 	.ndo_get_stats64	 = ipoib_get_stats,
 	.ndo_eth_ioctl		 = ipoib_ioctl,
+	.ndo_hwtstamp_get	 = ipoib_hwtstamp_get,
+	.ndo_hwtstamp_set	 = ipoib_hwtstamp_set,
 };
 
 static const struct net_device_ops ipoib_netdev_default_pf = {
-- 
2.31.1