Commit c04438f5 authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

ipv4: add net device refcount tracker to struct in_device 



Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 8c727003

include/linux/inetdevice.h

+2 −0
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ struct ipv4_devconf { 


struct in_device {

	struct net_device	*dev;

	netdevice_tracker	dev_tracker;



	refcount_t		refcnt;

	int			dead;

	struct in_ifaddr	__rcu *ifa_list;/* IP ifaddr chain		*/

net/ipv4/devinet.c

+2 −2
Original line number Diff line number Diff line
@@ -243,7 +243,7 @@ void in_dev_finish_destroy(struct in_device *idev) 
#ifdef NET_REFCNT_DEBUG

	pr_debug("%s: %p=%s\n", __func__, idev, dev ? dev->name : "NIL");

#endif

	dev_put(dev);

	dev_put_track(dev, &idev->dev_tracker);

	if (!idev->dead)

		pr_err("Freeing alive in_device %p\n", idev);

	else
@@ -271,7 +271,7 @@ static struct in_device *inetdev_init(struct net_device *dev) 
	if (IPV4_DEVCONF(in_dev->cnf, FORWARDING))

		dev_disable_lro(dev);

	/* Reference in_dev->dev */

	dev_hold(dev);

	dev_hold_track(dev, &in_dev->dev_tracker, GFP_KERNEL);

	/* Account for reference dev->ip_ptr (below) */

	refcount_set(&in_dev->refcnt, 1);