netdev - [PATCH/RFC 07/10] Export UDP socket lookup function

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Message-ID: <20070103163728.14635.58566.stgit@nienna.balabit>
Date:	Wed, 03 Jan 2007 17:37:28 +0100
From:	KOVACS Krisztian <hidden@...abit.hu>
To:	netfilter-devel@...ts.netfilter.org, netdev@...r.kernel.org
Subject: [PATCH/RFC 07/10] 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@...abit.hu>

---

 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 so
 				   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 1b348f5..a44d3d3 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -284,6 +284,14 @@ static struct sock *__udp4_lib_lookup(__
 	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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