tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
11int mlx5_ib_fs_init(struct mlx5_ib_dev *dev);
12void mlx5_ib_fs_cleanup_anchor(struct mlx5_ib_dev *dev);
13
14static 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 */