Commit c148fc2e authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller
Browse files

ipv4: inetdev_by_index() switch to RCU 



Use dev_get_by_index_rcu() instead of __dev_get_by_index() and
dev_base_lock rwlock

Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9fdce099

net/ipv4/devinet.c

+4 −3
Original line number Diff line number Diff line
@@ -405,11 +405,12 @@ struct in_device *inetdev_by_index(struct net *net, int ifindex) 
{

	struct net_device *dev;

	struct in_device *in_dev = NULL;

	read_lock(&dev_base_lock);

	dev = __dev_get_by_index(net, ifindex);



	rcu_read_lock();

	dev = dev_get_by_index_rcu(net, ifindex);

	if (dev)

		in_dev = in_dev_get(dev);

	read_unlock(&dev_base_lock);

	rcu_read_unlock();

	return in_dev;

}