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 <[EMAIL PROTECTED]>

---

 include/net/udp.h |    4 ++++
 net/ipv4/udp.c    |    8 ++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/include/net/udp.h b/include/net/udp.h
index 1b921fa..ea5aa31 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -141,6 +141,10 @@ 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(__be32 saddr, __be16 sport,
+                                   __be32 daddr, __be16 dport,
+                                   int dif);
+
 DECLARE_SNMP_STAT(struct udp_mib, udp_statistics);
 /*
  *     SNMP statistics for UDP and UDP-Lite
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1d15edc..52695a6 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -285,6 +285,14 @@ static struct sock *__udp4_lib_lookup(__be32 saddr, __be16 
sport,
        return result;
 }
 
+struct sock *udp4_lib_lookup(__be32 saddr, __be16 sport,
+                            __be32 daddr, __be16 dport,
+                            int dif)
+{
+       return __udp4_lib_lookup(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,

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