mlxsw: spectrum_acl: Add support for mirroring action

The patch extends the trap action for mirroring.

Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c

@@ -760,6 +760,16 @@ MLXSW_ITEM32(afa, trapdisc, forward_action, 0x00, 0, 4);
  */
 MLXSW_ITEM32(afa, trapdisc, trap_id, 0x04, 0, 9);
 
+/* afa_trapdisc_mirror_agent
+ * Mirror agent.
+ */
+MLXSW_ITEM32(afa, trapdisc, mirror_agent, 0x08, 29, 3);
+
+/* afa_trapdisc_mirror_enable
+ * Mirror enable.
+ */
+MLXSW_ITEM32(afa, trapdisc, mirror_enable, 0x08, 24, 1);
+
 static inline void
 mlxsw_afa_trapdisc_pack(char *payload,
 			enum mlxsw_afa_trapdisc_trap_action trap_action,
@@ -771,6 +781,14 @@ mlxsw_afa_trapdisc_pack(char *payload,
 	mlxsw_afa_trapdisc_trap_id_set(payload, trap_id);
 }
 
+static inline void
+mlxsw_afa_trapdisc_mirror_pack(char *payload, bool mirror_enable,
+			       u8 mirror_agent)
+{
+	mlxsw_afa_trapdisc_mirror_enable_set(payload, mirror_enable);
+	mlxsw_afa_trapdisc_mirror_agent_set(payload, mirror_agent);
+}
+
 int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block)
 {
 	char *act = mlxsw_afa_block_append_action(block,
@@ -816,6 +834,21 @@ int mlxsw_afa_block_append_trap_and_forward(struct mlxsw_afa_block *block,
 }
 EXPORT_SYMBOL(mlxsw_afa_block_append_trap_and_forward);
 
+int mlxsw_afa_block_append_mirror(struct mlxsw_afa_block *block,
+				  u8 mirror_agent)
+{
+	char *act = mlxsw_afa_block_append_action(block,
+						  MLXSW_AFA_TRAPDISC_CODE,
+						  MLXSW_AFA_TRAPDISC_SIZE);
+	if (!act)
+		return -ENOBUFS;
+	mlxsw_afa_trapdisc_pack(act, MLXSW_AFA_TRAPDISC_TRAP_ACTION_NOP,
+				MLXSW_AFA_TRAPDISC_FORWARD_ACTION_FORWARD, 0);
+	mlxsw_afa_trapdisc_mirror_pack(act, true, mirror_agent);
+	return 0;
+}
+EXPORT_SYMBOL(mlxsw_afa_block_append_mirror);
+
 /* Forwarding Action
  * -----------------
  * Forwarding Action can be used to implement Policy Based Switching (PBS)

drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h

@@ -65,6 +65,8 @@ int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block);
 int mlxsw_afa_block_append_trap(struct mlxsw_afa_block *block, u16 trap_id);
 int mlxsw_afa_block_append_trap_and_forward(struct mlxsw_afa_block *block,
 					    u16 trap_id);
+int mlxsw_afa_block_append_mirror(struct mlxsw_afa_block *block,
+				  u8 mirror_agent);
 int mlxsw_afa_block_append_fwd(struct mlxsw_afa_block *block,
 			       u8 local_port, bool in_port);
 int mlxsw_afa_block_append_vlan_modify(struct mlxsw_afa_block *block,