[NETFILTER]: Keep conntrack reference until IPsec policy checks are done

Keep the conntrack reference until policy checks have been performed for
IPsec NAT support. The reference needs to be dropped before a packet is
queued to avoid having the conntrack module unloadable.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index e9f83e5b28ce..6ea353907af5 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1080,6 +1080,7 @@ process:
 
         if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
                 goto discard_and_relse;
+        nf_reset(skb);
 
         if (sk_filter(sk, skb, 0))
                 goto discard_and_relse;