udp: Export UDP socket lookup function

The iptables tproxy code has to be able to do UDP socket hash lookups,
so we have to provide an exported lookup function for this purpose.

Signed-off-by: KOVACS Krisztian <hidden@sch.bme.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 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 */