net/mlx5: Add new WQE for updating flow table

Add new WQE type: FLOW_TBL_ACCESS, which will be used for
writing modify header arguments.
This type has specific control segment and special data segment.
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

include/linux/mlx5/device.h

@@ -442,6 +442,8 @@ enum {
 
 	MLX5_OPCODE_UMR			= 0x25,
 
+	MLX5_OPCODE_FLOW_TBL_ACCESS	= 0x2c,
+
 	MLX5_OPCODE_ACCESS_ASO		= 0x2d,
 };
 

include/linux/mlx5/qp.h

@@ -499,6 +499,16 @@ struct mlx5_stride_block_ctrl_seg {
 	__be16		num_entries;
 };
 
+struct mlx5_wqe_flow_update_ctrl_seg {
+	__be32		flow_idx_update;
+	__be32		dest_handle;
+	u8		reserved0[40];
+};
+
+struct mlx5_wqe_header_modify_argument_update_seg {
+	u8		argument_list[64];
+};
+
 struct mlx5_core_qp {
 	struct mlx5_core_rsc_common	common; /* must be first */
 	void (*event)		(struct mlx5_core_qp *, int);