[PATCH 1/2] net: add dev_ethtool_set_flags helper

[Neil Horman <nhorman@tuxdriver.com>]

Add a helper to check for presence of a set_flags method in an ethtool_ops
structure and conditionally call it

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: davem@davemloft.net
---
 include/linux/netdevice.h |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ca333e7..243781c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2624,6 +2624,13 @@ static inline u32 dev_ethtool_get_flags(struct net_device *dev)
 	return dev->ethtool_ops->get_flags(dev);
 }
 
+static inline int dev_ethtool_set_flags(struct net_device *dev, u32 flags)
+{
+	if (!dev->ethtool_ops || !dev->ethtool_ops->set_flags)
+		return 0;
+	return dev->ethtool_ops->set_flags(dev, flags);
+}
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* netdev_printk helpers, similar to dev_printk */
-- 
1.7.5.1