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authorKOVACS Krisztian <hidden@sch.bme.hu>2008-10-01 07:48:10 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-01 07:48:10 -0700
commitbcd41303f422015ab662c9276d108414aa75b796 (patch)
tree18fc3d87f764615d7139f23b2792bbf89fc7a63b
parenta3116ac5c216fc3c145906a46df9ce542ff7dcf2 (diff)
downloadlinux-bcd41303f422015ab662c9276d108414aa75b796.tar.bz2
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>
-rw-r--r--include/net/udp.h4
-rw-r--r--net/ipv4/udp.c7
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,