1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  * Copyright (C) 2017 Facebook.  All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public
7  * License v2 as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public
15  * License along with this program; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 021110-1307, USA.
18  */
19 #ifndef _UAPILINUX_NBD_NETLINK_H
20 #define _UAPILINUX_NBD_NETLINK_H
21 
22 #define NBD_GENL_FAMILY_NAME		"nbd"
23 #define NBD_GENL_VERSION		0x1
24 #define NBD_GENL_MCAST_GROUP_NAME	"nbd_mc_group"
25 
26 /* Configuration policy attributes, used for CONNECT */
27 enum {
28 	NBD_ATTR_UNSPEC,
29 	NBD_ATTR_INDEX,
30 	NBD_ATTR_SIZE_BYTES,
31 	NBD_ATTR_BLOCK_SIZE_BYTES,
32 	NBD_ATTR_TIMEOUT,
33 	NBD_ATTR_SERVER_FLAGS,
34 	NBD_ATTR_CLIENT_FLAGS,
35 	NBD_ATTR_SOCKETS,
36 	NBD_ATTR_DEAD_CONN_TIMEOUT,
37 	NBD_ATTR_DEVICE_LIST,
38 	NBD_ATTR_BACKEND_IDENTIFIER,
39 	__NBD_ATTR_MAX,
40 };
41 #define NBD_ATTR_MAX (__NBD_ATTR_MAX - 1)
42 
43 /*
44  * This is the format for multiple devices with NBD_ATTR_DEVICE_LIST
45  *
46  * [NBD_ATTR_DEVICE_LIST]
47  *   [NBD_DEVICE_ITEM]
48  *     [NBD_DEVICE_INDEX]
49  *     [NBD_DEVICE_CONNECTED]
50  */
51 enum {
52 	NBD_DEVICE_ITEM_UNSPEC,
53 	NBD_DEVICE_ITEM,
54 	__NBD_DEVICE_ITEM_MAX,
55 };
56 #define NBD_DEVICE_ITEM_MAX (__NBD_DEVICE_ITEM_MAX - 1)
57 
58 enum {
59 	NBD_DEVICE_UNSPEC,
60 	NBD_DEVICE_INDEX,
61 	NBD_DEVICE_CONNECTED,
62 	__NBD_DEVICE_MAX,
63 };
64 #define NBD_DEVICE_ATTR_MAX (__NBD_DEVICE_MAX - 1)
65 
66 /*
67  * This is the format for multiple sockets with NBD_ATTR_SOCKETS
68  *
69  * [NBD_ATTR_SOCKETS]
70  *   [NBD_SOCK_ITEM]
71  *     [NBD_SOCK_FD]
72  *   [NBD_SOCK_ITEM]
73  *     [NBD_SOCK_FD]
74  */
75 enum {
76 	NBD_SOCK_ITEM_UNSPEC,
77 	NBD_SOCK_ITEM,
78 	__NBD_SOCK_ITEM_MAX,
79 };
80 #define NBD_SOCK_ITEM_MAX (__NBD_SOCK_ITEM_MAX - 1)
81 
82 enum {
83 	NBD_SOCK_UNSPEC,
84 	NBD_SOCK_FD,
85 	__NBD_SOCK_MAX,
86 };
87 #define NBD_SOCK_MAX (__NBD_SOCK_MAX - 1)
88 
89 enum {
90 	NBD_CMD_UNSPEC,
91 	NBD_CMD_CONNECT,
92 	NBD_CMD_DISCONNECT,
93 	NBD_CMD_RECONFIGURE,
94 	NBD_CMD_LINK_DEAD,
95 	NBD_CMD_STATUS,
96 	__NBD_CMD_MAX,
97 };
98 #define NBD_CMD_MAX	(__NBD_CMD_MAX - 1)
99 
100 #endif /* _UAPILINUX_NBD_NETLINK_H */
101