From 82efee1499a27c06f5afb11b07db384fdb3f7004 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 30 Sep 2010 03:31:56 +0000 Subject: ipv4: introduce __ip_dev_find() ip_dev_find(net, addr) finds a device given an IPv4 source address and takes a reference on it. Introduce __ip_dev_find(), taking a third argument, to optionally take the device reference. Callers not asking the reference to be taken should be in an rcu_read_lock() protected section. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/inetdevice.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux/inetdevice.h') diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index 1ec09bb4a3ab..ccd5b07d678d 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -159,7 +159,12 @@ struct in_ifaddr { extern int register_inetaddr_notifier(struct notifier_block *nb); extern int unregister_inetaddr_notifier(struct notifier_block *nb); -extern struct net_device *ip_dev_find(struct net *net, __be32 addr); +extern struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref); +static inline struct net_device *ip_dev_find(struct net *net, __be32 addr) +{ + return __ip_dev_find(net, addr, true); +} + extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b); extern int devinet_ioctl(struct net *net, unsigned int cmd, void __user *); extern void devinet_init(void); -- cgit v1.2.3