From: wenxu <we...@ucloud.cn>
Currently add nat mangle action with comparing invert and ori tuple.
It is better to check IPS_NAT_MASK flags first to avoid non necessary
memcmp for non-NAT conntrack.
Signed-off-by: wenxu <we...@ucloud.cn>
---
net/sched/act_ct.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
index 1a76639..2057735 100644
--- a/net/sched/act_ct.c
+++ b/net/sched/act_ct.c
@@ -199,6 +199,9 @@ static int tcf_ct_flow_table_add_action_nat(struct net *net,
const struct nf_conntrack_tuple *tuple = &ct->tuplehash[dir].tuple;
struct nf_conntrack_tuple target;
+ if (!(ct->status & IPS_NAT_MASK))
+ return 0;
+
nf_ct_invert_tuple(&target, &ct->tuplehash[!dir].tuple);
switch (tuple->src.l3num) {
--
1.8.3.1
