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@xxxxxxxxxx>
---
include/net/udp.h | 4 ++++
net/ipv4/udp.c | 7 +++++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/include/net/udp.h b/include/net/udp.h
index addcdc6..d38f6f2 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 8e42fbb..28c3c31 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,
--
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