netdev - [PATCH 3/9] tproxy: added udp6_lib

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Message-id: <20101020112118.6260.5136.stgit@este.odu>
Date:	Wed, 20 Oct 2010 13:21:18 +0200
From:	KOVACS Krisztian <hidden@...abit.hu>
To:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org
Cc:	Patrick McHardy <kaber@...sh.net>,
	David Miller <davem@...emloft.net>
Subject: [PATCH 3/9] tproxy: added udp6_lib_lookup function

From: Balazs Scheidler <bazsi@...abit.hu>

Just like with IPv4, we need access to the UDP hash table to look up local
sockets, but instead of exporting the global udp_table, export a lookup
function.

Signed-off-by: Balazs Scheidler <bazsi@...abit.hu>
Signed-off-by: KOVACS Krisztian <hidden@...abit.hu>
---
 include/net/udp.h |    3 +++
 net/ipv6/udp.c    |    8 ++++++++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/include/net/udp.h b/include/net/udp.h
index a184d34..200b828 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -183,6 +183,9 @@ extern int udp_lib_setsockopt(struct sock *sk, int level, int optname,
 extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
 				    __be32 daddr, __be16 dport,
 				    int dif);
+extern struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport,
+				    const struct in6_addr *daddr, __be16 dport,
+				    int dif);
 
 /*
  * 	SNMP statistics for UDP and UDP-Lite
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 33e3683..c84dad4 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -320,6 +320,14 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
 				 udptable);
 }
 
+struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport,
+			     const struct in6_addr *daddr, __be16 dport, int dif)
+{
+	return __udp6_lib_lookup(net, saddr, sport, daddr, dport, dif, &udp_table);
+}
+EXPORT_SYMBOL_GPL(udp6_lib_lookup);
+
+
 /*
  * 	This should be easy, if there is something there we
  * 	return it, otherwise we block.


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