net_sched: act: pick a different type for act_xt

In tcf_register_action() we check either ->type or ->kind to see if
there is an existing action registered, but ipt action registers two
actions with same type but different kinds. They should have different
types too.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: NCong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: NJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/uapi/linux/tc_act/tc_ipt.h

@@ -4,6 +4,7 @@
 #include <linux/pkt_cls.h>
 
 #define TCA_ACT_IPT 6
+#define TCA_ACT_XT 10
 
 enum {
 	TCA_IPT_UNSPEC,

net/sched/act_ipt.c

@@ -298,7 +298,7 @@ static struct tc_action_ops act_ipt_ops = {
 static struct tc_action_ops act_xt_ops = {
 	.kind		=	"xt",
 	.hinfo		=	&ipt_hash_info,
-	.type		=	TCA_ACT_IPT,
+	.type		=	TCA_ACT_XT,
 	.capab		=	TCA_CAP_NONE,
 	.owner		=	THIS_MODULE,
 	.act		=	tcf_ipt,