Use the socket cached in the TPROXY target if it's present.
Signed-off-by: KOVACS Krisztian <hidden@xxxxxxxxxx>
---
net/ipv4/udp.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 2fb3b7c..d1fefb6 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1151,6 +1151,14 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct hlist_head udptable[],
if (rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST))
return __udp4_lib_mcast_deliver(skb, uh, saddr, daddr, udptable);
+#if defined(CONFIG_NETFILTER_TPROXY) || defined (CONFIG_NETFILTER_TPROXY_MODULE)
+ if (unlikely(skb->sk)) {
+ /* steal reference */
+ sk = skb->sk;
+ skb->destructor = NULL;
+ skb->sk = NULL;
+ } else
+#endif
sk = __udp4_lib_lookup(saddr, uh->source, daddr, uh->dest,
skb->dev->ifindex, udptable );
-
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