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authorEric Dumazet <eric.dumazet@gmail.com>2010-09-30 03:31:56 +0000
committerDavid S. Miller <davem@davemloft.net>2010-09-30 21:16:05 -0700
commit82efee1499a27c06f5afb11b07db384fdb3f7004 (patch)
treec329e037ddf4e13cd824c131eab3bd3a2e67a0fc /include
parent828bac87bb074f3366621724fdfbe314f98ccc7e (diff)
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 <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/inetdevice.h7
1 files changed, 6 insertions, 1 deletions
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);