RDMA/mlx5: Use the uapi disablement APIs instead of code

Rely on UAPI_DEF_IS_OBJ_SUPPORTED instead of manipulating the contents of
the driver's definition list.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

drivers/infiniband/hw/mlx5/devx.c

@@ -1323,9 +1323,23 @@ DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
 			    &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
 			    &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
 
+static bool devx_is_supported(struct ib_device *device)
+{
+	struct mlx5_ib_dev *dev = to_mdev(device);
+
+	return !dev->rep && MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
+				    MLX5_GENERAL_OBJ_TYPES_CAP_UCTX;
+}
+
 const struct uapi_definition mlx5_ib_devx_defs[] = {
-	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_DEVX),
-	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_DEVX_OBJ),
-	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(MLX5_IB_OBJECT_DEVX_UMEM),
+	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
+		MLX5_IB_OBJECT_DEVX,
+		UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
+	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
+		MLX5_IB_OBJECT_DEVX_OBJ,
+		UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
+	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
+		MLX5_IB_OBJECT_DEVX_UMEM,
+		UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
 	{},
 };

drivers/infiniband/hw/mlx5/main.c

@@ -5552,6 +5552,7 @@ ADD_UVERBS_ATTRIBUTES_SIMPLE(
 
 static const struct uapi_definition mlx5_ib_defs[] = {
 #if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
+	UAPI_DEF_CHAIN(mlx5_ib_devx_defs),
 	UAPI_DEF_CHAIN(mlx5_ib_flow_defs),
 #endif
 
@@ -5561,27 +5562,6 @@ static const struct uapi_definition mlx5_ib_defs[] = {
 	{}
 };
 
-static int populate_specs_root(struct mlx5_ib_dev *dev)
-{
-	struct uapi_definition *defs = dev->driver_defs;
-
-#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
-	if (MLX5_CAP_GEN_64(dev->mdev, general_obj_types) &
-	    MLX5_GENERAL_OBJ_TYPES_CAP_UCTX)
-		*defs++ = (struct uapi_definition)UAPI_DEF_CHAIN(
-			mlx5_ib_devx_defs);
-#endif
-
-	*defs++ = (struct uapi_definition)UAPI_DEF_CHAIN(mlx5_ib_defs);
-	*defs++ = (struct uapi_definition){};
-	WARN_ON(defs - dev->driver_defs >= ARRAY_SIZE(dev->driver_defs));
-
-	if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS))
-		dev->ib_dev.driver_def = dev->driver_defs;
-
-	return 0;
-}
-
 static int mlx5_ib_read_counters(struct ib_counters *counters,
 				 struct ib_counters_read_attr *read_attr,
 				 struct uverbs_attr_bundle *attrs)
@@ -5898,6 +5878,9 @@ int mlx5_ib_stage_caps_init(struct mlx5_ib_dev *dev)
 	dev->ib_dev.destroy_counters = mlx5_ib_destroy_counters;
 	dev->ib_dev.read_counters = mlx5_ib_read_counters;
 
+	if (IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS))
+		dev->ib_dev.driver_def = mlx5_ib_defs;
+
 	err = init_node_data(dev);
 	if (err)
 		return err;
@@ -6110,11 +6093,6 @@ void mlx5_ib_stage_bfrag_cleanup(struct mlx5_ib_dev *dev)
 	mlx5_free_bfreg(dev->mdev, &dev->bfreg);
 }
 
-static int mlx5_ib_stage_populate_specs(struct mlx5_ib_dev *dev)
-{
-	return populate_specs_root(dev);
-}
-
 int mlx5_ib_stage_ib_reg_init(struct mlx5_ib_dev *dev)
 {
 	const char *name;
@@ -6249,9 +6227,6 @@ static const struct mlx5_ib_profile pf_profile = {
 	STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
 		     NULL,
 		     mlx5_ib_stage_pre_ib_reg_umr_cleanup),
-	STAGE_CREATE(MLX5_IB_STAGE_SPECS,
-		     mlx5_ib_stage_populate_specs,
-		     NULL),
 	STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
 		     mlx5_ib_stage_ib_reg_init,
 		     mlx5_ib_stage_ib_reg_cleanup),
@@ -6294,9 +6269,6 @@ static const struct mlx5_ib_profile nic_rep_profile = {
 	STAGE_CREATE(MLX5_IB_STAGE_PRE_IB_REG_UMR,
 		     NULL,
 		     mlx5_ib_stage_pre_ib_reg_umr_cleanup),
-	STAGE_CREATE(MLX5_IB_STAGE_SPECS,
-		     mlx5_ib_stage_populate_specs,
-		     NULL),
 	STAGE_CREATE(MLX5_IB_STAGE_IB_REG,
 		     mlx5_ib_stage_ib_reg_init,
 		     mlx5_ib_stage_ib_reg_cleanup),

drivers/infiniband/hw/mlx5/mlx5_ib.h

@@ -781,7 +781,6 @@ enum mlx5_ib_stages {
 	MLX5_IB_STAGE_UAR,
 	MLX5_IB_STAGE_BFREG,
 	MLX5_IB_STAGE_PRE_IB_REG_UMR,
-	MLX5_IB_STAGE_SPECS,
 	MLX5_IB_STAGE_IB_REG,
 	MLX5_IB_STAGE_POST_IB_REG_UMR,
 	MLX5_IB_STAGE_DELAY_DROP,
@@ -891,7 +890,6 @@ struct mlx5_ib_pf_eq {
 
 struct mlx5_ib_dev {
 	struct ib_device		ib_dev;
-	struct uapi_definition		driver_defs[7];
 	struct mlx5_core_dev		*mdev;
 	struct mlx5_roce		roce[MLX5_MAX_PORTS];
 	int				num_ports;