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From: Kory Maincent <kory.maincent@bootlin.com>
Date: Fri, 16 Feb 2024 16:52:21 +0100
Subject: [PATCH RFC net-next v8 03/13] net: Make net_hwtstamp_validate
 accessible
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Message-Id: <20240216-feature_ptp_netnext-v8-3-510f42f444fb@bootlin.com>
References: <20240216-feature_ptp_netnext-v8-0-510f42f444fb@bootlin.com>
In-Reply-To: <20240216-feature_ptp_netnext-v8-0-510f42f444fb@bootlin.com>
To: Florian Fainelli <florian.fainelli@broadcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>, 
 Andrew Lunn <andrew@lunn.ch>, Heiner Kallweit <hkallweit1@gmail.com>, 
 Russell King <linux@armlinux.org.uk>, 
 "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, 
 Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, 
 Richard Cochran <richardcochran@gmail.com>, 
 Radu Pirea <radu-nicolae.pirea@oss.nxp.com>, 
 Jay Vosburgh <j.vosburgh@gmail.com>, Andy Gospodarek <andy@greyhouse.net>, 
 Nicolas Ferre <nicolas.ferre@microchip.com>, 
 Claudiu Beznea <claudiu.beznea@tuxon.dev>, 
 Willem de Bruijn <willemdebruijn.kernel@gmail.com>, 
 Jonathan Corbet <corbet@lwn.net>, 
 Horatiu Vultur <horatiu.vultur@microchip.com>, UNGLinuxDriver@microchip.com, 
 Simon Horman <horms@kernel.org>, Vladimir Oltean <vladimir.oltean@nxp.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>, netdev@vger.kernel.org, 
 linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, 
 Maxime Chevallier <maxime.chevallier@bootlin.com>, 
 Rahul Rameshbabu <rrameshbabu@nvidia.com>, 
 Kory Maincent <kory.maincent@bootlin.com>

Make the net_hwtstamp_validate function accessible in prevision to use
it from ethtool to validate the hwtstamp configuration before setting it.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
---

Change in v8:
- New patch
---
 include/linux/netdevice.h | 1 +
 net/core/dev_ioctl.c      | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index fa92085c29a8..37cccdc333c6 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4002,6 +4002,7 @@ int generic_hwtstamp_get_lower(struct net_device *dev,
 int generic_hwtstamp_set_lower(struct net_device *dev,
 			       struct kernel_hwtstamp_config *kernel_cfg,
 			       struct netlink_ext_ack *extack);
+int net_hwtstamp_validate(const struct kernel_hwtstamp_config *cfg);
 int dev_set_hwtstamp_phylib(struct net_device *dev,
 			    struct kernel_hwtstamp_config *cfg,
 			    struct netlink_ext_ack *extack);
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 5d3b169d8f18..847254fd7f13 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -184,7 +184,7 @@ static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cm
 	return err;
 }
 
-static int net_hwtstamp_validate(const struct kernel_hwtstamp_config *cfg)
+int net_hwtstamp_validate(const struct kernel_hwtstamp_config *cfg)
 {
 	enum hwtstamp_tx_types tx_type;
 	enum hwtstamp_rx_filters rx_filter;
@@ -238,6 +238,7 @@ static int net_hwtstamp_validate(const struct kernel_hwtstamp_config *cfg)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(net_hwtstamp_validate);
 
 static int dev_eth_ioctl(struct net_device *dev,
 			 struct ifreq *ifr, unsigned int cmd)

-- 
2.25.1