net: dsa: add port policers

The approach taken to pass the port policer methods on to drivers is
pragmatic. It is similar to the port mirroring implementation (in that
the DSA core does all of the filter block interaction and only passes
simple operations for the driver to implement) and dissimilar to how
flow-based policers are going to be implemented (where the driver has
full control over the flow_cls_offload data structure).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 1 deletions

diff --git a/include/net/dsa.h b/include/net/dsa.h
index aeb411e77b9a..fb3f9222f2a1 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -130,9 +130,10 @@ struct dsa_switch_tree {
 	struct list_head rtable;
 };
 
-/* TC matchall action types, only mirroring for now */
+/* TC matchall action types */
 enum dsa_port_mall_action_type {
 	DSA_PORT_MALL_MIRROR,
+	DSA_PORT_MALL_POLICER,
 };
 
 /* TC mirroring entry */
@@ -141,6 +142,12 @@ struct dsa_mall_mirror_tc_entry {
 	bool ingress;
 };
 
+/* TC port policer entry */
+struct dsa_mall_policer_tc_entry {
+	s64 burst;
+	u64 rate_bytes_per_sec;
+};
+
 /* TC matchall entry */
 struct dsa_mall_tc_entry {
 	struct list_head list;
@@ -148,6 +155,7 @@ struct dsa_mall_tc_entry {
 	enum dsa_port_mall_action_type type;
 	union {
 		struct dsa_mall_mirror_tc_entry mirror;
+		struct dsa_mall_policer_tc_entry policer;
 	};
 };
 
@@ -557,6 +565,9 @@ struct dsa_switch_ops {
 				   bool ingress);
 	void	(*port_mirror_del)(struct dsa_switch *ds, int port,
 				   struct dsa_mall_mirror_tc_entry *mirror);
+	int	(*port_policer_add)(struct dsa_switch *ds, int port,
+				    struct dsa_mall_policer_tc_entry *policer);
+	void	(*port_policer_del)(struct dsa_switch *ds, int port);
 	int	(*port_setup_tc)(struct dsa_switch *ds, int port,
 				 enum tc_setup_type type, void *type_data);