Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f3005d7f authored Apr 16, 2008 by Denis V. Lunev Committed by David S. Miller Apr 16, 2008

[NETNS]: Add netns refcnt debug for network devices.



dev_set_net is called for
- just allocated devices
- devices moving from one namespace to another
release_net has proper check inside to distinguish these cases.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 3661a910

include/linux/netdevice.h

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -758,7 +758,8 @@ static inline
	void dev_net_set(struct net_device dev, struct net net)		void dev_net_set(struct net_device dev, struct net net)
	{		{
	#ifdef CONFIG_NET_NS		#ifdef CONFIG_NET_NS
	dev->nd_net = net;		release_net(dev->nd_net);
			dev->nd_net = hold_net(net);
	#endif		#endif
	}		}

net/core/dev.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -4042,6 +4042,8 @@ EXPORT_SYMBOL(alloc_netdev_mq);
	*/		*/
	void free_netdev(struct net_device *dev)		void free_netdev(struct net_device *dev)
	{		{
			release_net(dev_net(dev));

	/* Compatibility with error handling in drivers */		/* Compatibility with error handling in drivers */
	if (dev->reg_state == NETREG_UNINITIALIZED) {		if (dev->reg_state == NETREG_UNINITIALIZED) {
	kfree((char *)dev - dev->padded);		kfree((char *)dev - dev->padded);