2 files changed, 11 insertions, 0 deletions

diff --git a/include/net/udp.h b/include/net/udp.h
index addcdc67234c..d38f6f2419f9 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -148,6 +148,10 @@ extern int 	udp_lib_setsockopt(struct sock *sk, int level, int optname,
                                    char __user *optval, int optlen,
                                    int (*push_pending_frames)(struct sock *));
 
+extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
+                                    __be32 daddr, __be16 dport,
+                                    int dif);
+
 DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6);
 
 /* UDP-Lite does not have a standardized MIB yet, so we inherit from UDP */
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 57e26fa66185..c83d0ef469c9 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -302,6 +302,13 @@ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr,
         return result;
 }
 
+struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
+                             __be32 daddr, __be16 dport, int dif)
+{
+        return __udp4_lib_lookup(net, saddr, sport, daddr, dport, dif, udp_hash);
+}
+EXPORT_SYMBOL_GPL(udp4_lib_lookup);
+
 static inline struct sock *udp_v4_mcast_next(struct sock *sk,
                                              __be16 loc_port, __be32 loc_addr,
                                              __be16 rmt_port, __be32 rmt_addr,