mlxsw: spectrum: Implement action to set FID

Implement part of multipurpose Virtual Router and Forwarding Domain
Action that takes care of setting up FID. We need to use it to be able
to forward packets using ACL action when no FID is associated on RX.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 44 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
index a984c361926c..46304ffb9449 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
@@ -811,3 +811,47 @@ int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block,
 	return 0;
 }
 EXPORT_SYMBOL(mlxsw_afa_block_append_counter);
+
+/* Virtual Router and Forwarding Domain Action
+ * -------------------------------------------
+ * Virtual Switch action is used for manipulate the Virtual Router (VR),
+ * MPLS label space and the Forwarding Identifier (FID).
+ */
+
+#define MLXSW_AFA_VIRFWD_CODE 0x0E
+#define MLXSW_AFA_VIRFWD_SIZE 1
+
+enum mlxsw_afa_virfwd_fid_cmd {
+	/* Do nothing */
+	MLXSW_AFA_VIRFWD_FID_CMD_NOOP,
+	/* Set the Forwarding Identifier (FID) to fid */
+	MLXSW_AFA_VIRFWD_FID_CMD_SET,
+};
+
+/* afa_virfwd_fid_cmd */
+MLXSW_ITEM32(afa, virfwd, fid_cmd, 0x08, 29, 3);
+
+/* afa_virfwd_fid
+ * The FID value.
+ */
+MLXSW_ITEM32(afa, virfwd, fid, 0x08, 0, 16);
+
+static inline void mlxsw_afa_virfwd_pack(char *payload,
+					 enum mlxsw_afa_virfwd_fid_cmd fid_cmd,
+					 u16 fid)
+{
+	mlxsw_afa_virfwd_fid_cmd_set(payload, fid_cmd);
+	mlxsw_afa_virfwd_fid_set(payload, fid);
+}
+
+int mlxsw_afa_block_append_fid_set(struct mlxsw_afa_block *block, u16 fid)
+{
+	char *act = mlxsw_afa_block_append_action(block,
+						  MLXSW_AFA_VIRFWD_CODE,
+						  MLXSW_AFA_VIRFWD_SIZE);
+	if (!act)
+		return -ENOBUFS;
+	mlxsw_afa_virfwd_pack(act, MLXSW_AFA_VIRFWD_FID_CMD_SET, fid);
+	return 0;
+}
+EXPORT_SYMBOL(mlxsw_afa_block_append_fid_set);