1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * RDMA Network Block Driver |
4 | * |
5 | * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved. |
6 | * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved. |
7 | * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved. |
8 | */ |
9 | #ifndef RNBD_SRV_H |
10 | #define RNBD_SRV_H |
11 | |
12 | #include <linux/types.h> |
13 | #include <linux/idr.h> |
14 | #include <linux/kref.h> |
15 | |
16 | #include <rtrs.h> |
17 | #include "rnbd-proto.h" |
18 | #include "rnbd-log.h" |
19 | |
20 | struct rnbd_srv_session { |
21 | /* Entry inside global sess_list */ |
22 | struct list_head list; |
23 | struct rtrs_srv_sess *rtrs; |
24 | char sessname[NAME_MAX]; |
25 | int queue_depth; |
26 | |
27 | struct xarray index_idr; |
28 | struct mutex lock; |
29 | u8 ver; |
30 | }; |
31 | |
32 | struct rnbd_srv_dev { |
33 | /* Entry inside global dev_list */ |
34 | struct list_head list; |
35 | struct kobject dev_kobj; |
36 | struct kobject *dev_sessions_kobj; |
37 | struct kref kref; |
38 | char name[NAME_MAX]; |
39 | /* List of rnbd_srv_sess_dev structs */ |
40 | struct list_head sess_dev_list; |
41 | struct mutex lock; |
42 | int open_write_cnt; |
43 | }; |
44 | |
45 | /* Structure which binds N devices and N sessions */ |
46 | struct rnbd_srv_sess_dev { |
47 | /* Entry inside rnbd_srv_dev struct */ |
48 | struct list_head dev_list; |
49 | struct file *bdev_file; |
50 | struct rnbd_srv_session *sess; |
51 | struct rnbd_srv_dev *dev; |
52 | struct kobject kobj; |
53 | u32 device_id; |
54 | bool keep_id; |
55 | bool readonly; |
56 | struct kref kref; |
57 | struct completion *destroy_comp; |
58 | char pathname[NAME_MAX]; |
59 | enum rnbd_access_mode access_mode; |
60 | }; |
61 | |
62 | void rnbd_srv_sess_dev_force_close(struct rnbd_srv_sess_dev *sess_dev, |
63 | struct kobj_attribute *attr); |
64 | /* rnbd-srv-sysfs.c */ |
65 | |
66 | int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev, |
67 | struct block_device *bdev); |
68 | void rnbd_srv_destroy_dev_sysfs(struct rnbd_srv_dev *dev); |
69 | int rnbd_srv_create_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev); |
70 | void rnbd_srv_destroy_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev); |
71 | int rnbd_srv_create_sysfs_files(void); |
72 | void rnbd_srv_destroy_sysfs_files(void); |
73 | void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id); |
74 | |
75 | #endif /* RNBD_SRV_H */ |
76 | |