1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* 3 * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved. 4 */ 5 6 #ifndef _MLX5_IB_FS_H 7 #define _MLX5_IB_FS_H 8 9 #include "mlx5_ib.h" 10 11 int mlx5_ib_fs_init(struct mlx5_ib_dev *dev); 12 void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev); 13 14 static inline void mlx5_ib_fs_cleanup(struct mlx5_ib_dev *dev) 15 { 16 int i; 17 18 /* When a steering anchor is created, a special flow table is also 19 * created for the user to reference. Since the user can reference it, 20 * the kernel cannot trust that when the user destroys the steering 21 * anchor, they no longer reference the flow table. 22 * 23 * To address this issue, when a user destroys a steering anchor, only 24 * the flow steering rule in the table is destroyed, but the table 25 * itself is kept to deal with the above scenario. The remaining 26 * resources are only removed when the RDMA device is destroyed, which 27 * is a safe assumption that all references are gone. 28 */ 29 mlx5_ib_fs_cleanup_anchor(dev); 30 for (i = 0; i < MLX5_RDMA_TRANSPORT_BYPASS_PRIO; i++) 31 kfree(dev->flow_db->rdma_transport_tx[i]); 32 for (i = 0; i < MLX5_RDMA_TRANSPORT_BYPASS_PRIO; i++) 33 kfree(dev->flow_db->rdma_transport_rx[i]); 34 kfree(dev->flow_db); 35 } 36 #endif /* _MLX5_IB_FS_H */ 37