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-rw-r--r--include/net/route.h19
1 files changed, 17 insertions, 2 deletions
diff --git a/include/net/route.h b/include/net/route.h
index c29ef2733f2d..8c52bc6f1c90 100644
--- a/include/net/route.h
+++ b/include/net/route.h
@@ -30,6 +30,7 @@
#include <net/inet_sock.h>
#include <linux/in_route.h>
#include <linux/rtnetlink.h>
+#include <linux/rcupdate.h>
#include <linux/route.h>
#include <linux/ip.h>
#include <linux/cache.h>
@@ -157,8 +158,22 @@ static inline struct rtable *ip_route_output_gre(struct net *net, struct flowi4
return ip_route_output_key(net, fl4);
}
-extern int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src,
- u8 tos, struct net_device *devin);
+extern int ip_route_input_noref(struct sk_buff *skb, __be32 dst, __be32 src,
+ u8 tos, struct net_device *devin);
+
+static inline int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src,
+ u8 tos, struct net_device *devin)
+{
+ int err;
+
+ rcu_read_lock();
+ err = ip_route_input_noref(skb, dst, src, tos, devin);
+ if (!err)
+ skb_dst_force(skb);
+ rcu_read_unlock();
+
+ return err;
+}
extern void ipv4_update_pmtu(struct sk_buff *skb, struct net *net, u32 mtu,
int oif, u32 mark, u8 protocol, int flow_flags);