linux-kernel - [PATCH net-next 1/4] net: Wrap ndo_do_ioctl() to prepare for DSA stacked ops

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Date:   Fri, 17 Jul 2020 20:05:30 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jiri Pirko <jiri@...lanox.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Taehee Yoo <ap420073@...il.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Maxim Mikityanskiy <maximmi@...lanox.com>,
        Richard Cochran <richardcochran@...il.com>,
        Michal Kubecek <mkubecek@...e.cz>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next 1/4] net: Wrap ndo_do_ioctl() to prepare for DSA stacked ops

In preparation for adding another layer of call into a DSA stacked ops
singleton, wrap the ndo_do_ioctl() call into dev_do_ioctl().

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 net/core/dev_ioctl.c | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index 547b587c1950..a213c703c90a 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -225,6 +225,22 @@ static int net_hwtstamp_validate(struct ifreq *ifr)
 	return 0;
 }
 
+static int dev_do_ioctl(struct net_device *dev,
+			struct ifreq *ifr, unsigned int cmd)
+{
+	const struct net_device_ops *ops = dev->netdev_ops;
+	int err = -EOPNOTSUPP;
+
+	if (ops->ndo_do_ioctl) {
+		if (netif_device_present(dev))
+			err = ops->ndo_do_ioctl(dev, ifr, cmd);
+		else
+			err = -ENODEV;
+	}
+
+	return err;
+}
+
 /*
  *	Perform the SIOCxIFxxx calls, inside rtnl_lock()
  */
@@ -323,13 +339,7 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
 		    cmd == SIOCSHWTSTAMP ||
 		    cmd == SIOCGHWTSTAMP ||
 		    cmd == SIOCWANDEV) {
-			err = -EOPNOTSUPP;
-			if (ops->ndo_do_ioctl) {
-				if (netif_device_present(dev))
-					err = ops->ndo_do_ioctl(dev, ifr, cmd);
-				else
-					err = -ENODEV;
-			}
+			err = dev_do_ioctl(dev, ifr, cmd);
 		} else
 			err = -EINVAL;
 
-- 
2.25.1