IB/mlx5: Create profile infrastructure to add and remove stages

Today we have single function which is used when we add an IB interface,
break this function into multiple functions.

Create stages and a generic mechanism to execute each stage.
This is in preparation for RDMA/IB representors which might not need
all stages or will do things differently in some of the stages.

This patch doesn't change any functionality.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/mlx5_ib.h

@@ -715,6 +715,36 @@ struct mlx5_ib_delay_drop {
 	struct mlx5_ib_dbg_delay_drop *dbg;
 };
 
+enum mlx5_ib_stages {
+	MLX5_IB_STAGE_INIT,
+	MLX5_IB_STAGE_CAPS,
+	MLX5_IB_STAGE_ROCE,
+	MLX5_IB_STAGE_DEVICE_RESOURCES,
+	MLX5_IB_STAGE_ODP,
+	MLX5_IB_STAGE_COUNTERS,
+	MLX5_IB_STAGE_CONG_DEBUGFS,
+	MLX5_IB_STAGE_UAR,
+	MLX5_IB_STAGE_BFREG,
+	MLX5_IB_STAGE_IB_REG,
+	MLX5_IB_STAGE_UMR_RESOURCES,
+	MLX5_IB_STAGE_DELAY_DROP,
+	MLX5_IB_STAGE_CLASS_ATTR,
+	MLX5_IB_STAGE_LOOPBACK,
+	MLX5_IB_STAGE_MAX,
+};
+
+struct mlx5_ib_stage {
+	int (*init)(struct mlx5_ib_dev *dev);
+	void (*cleanup)(struct mlx5_ib_dev *dev);
+};
+
+#define STAGE_CREATE(_stage, _init, _cleanup) \
+	.stage[_stage] = {.init = _init, .cleanup = _cleanup}
+
+struct mlx5_ib_profile {
+	struct mlx5_ib_stage stage[MLX5_IB_STAGE_MAX];
+};
+
 struct mlx5_ib_dev {
 	struct ib_device		ib_dev;
 	struct mlx5_core_dev		*mdev;
@@ -753,6 +783,7 @@ struct mlx5_ib_dev {
 	struct mlx5_sq_bfreg	fp_bfreg;
 	struct mlx5_ib_delay_drop	delay_drop;
 	struct mlx5_ib_dbg_cc_params	*dbg_cc_params;
+	const struct mlx5_ib_profile	*profile;
 
 	/* protect the user_td */
 	struct mutex		lb_mutex;