net: tc: helper functions to query action types

This is a helper function drivers can use to learn if the
action type is a drop action.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/tc_act/tc_gact.h b/include/net/tc_act/tc_gact.h
index 592a6bc02b0b535087e9f2afee844b5ea37c666b..04a31830711be46691f4554c6ce550d8fa4adfce 100644 (file)
--- a/include/net/tc_act/tc_gact.h
+++ b/include/net/tc_act/tc_gact.h
@@ -2,6 +2,7 @@
 #define __NET_TC_GACT_H
 
 #include <net/act_api.h>
+#include <linux/tc_act/tc_gact.h>
 
 struct tcf_gact {
        struct tcf_common       common;
@@ -15,4 +16,19 @@ struct tcf_gact {
 #define to_gact(a) \
        container_of(a->priv, struct tcf_gact, common)
 
+#ifdef CONFIG_NET_CLS_ACT
+static inline bool is_tcf_gact_shot(const struct tc_action *a)
+{
+       struct tcf_gact *gact;
+
+       if (a->ops && a->ops->type != TCA_ACT_GACT)
+               return false;
+
+       gact = a->priv;
+       if (gact->tcf_action == TC_ACT_SHOT)
+               return true;
+
+       return false;
+}
+#endif
 #endif /* __NET_TC_GACT_H */