xref: /linux/include/uapi/linux/nbd-netlink.h (revision efe4a1acdc2c70da9025cf405112667e5580a572)
1 /*
2  * Copyright (C) 2017 Facebook.  All rights reserved.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public
6  * License v2 as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11  * General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public
14  * License along with this program; if not, write to the
15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16  * Boston, MA 021110-1307, USA.
17  */
18 #ifndef _UAPILINUX_NBD_NETLINK_H
19 #define _UAPILINUX_NBD_NETLINK_H
20 
21 #define NBD_GENL_FAMILY_NAME		"nbd"
22 #define NBD_GENL_VERSION		0x1
23 #define NBD_GENL_MCAST_GROUP_NAME	"nbd_mc_group"
24 
25 /* Configuration policy attributes, used for CONNECT */
26 enum {
27 	NBD_ATTR_UNSPEC,
28 	NBD_ATTR_INDEX,
29 	NBD_ATTR_SIZE_BYTES,
30 	NBD_ATTR_BLOCK_SIZE_BYTES,
31 	NBD_ATTR_TIMEOUT,
32 	NBD_ATTR_SERVER_FLAGS,
33 	NBD_ATTR_CLIENT_FLAGS,
34 	NBD_ATTR_SOCKETS,
35 	NBD_ATTR_DEAD_CONN_TIMEOUT,
36 	NBD_ATTR_DEVICE_LIST,
37 	__NBD_ATTR_MAX,
38 };
39 #define NBD_ATTR_MAX (__NBD_ATTR_MAX - 1)
40 
41 /*
42  * This is the format for multiple devices with NBD_ATTR_DEVICE_LIST
43  *
44  * [NBD_ATTR_DEVICE_LIST]
45  *   [NBD_DEVICE_ITEM]
46  *     [NBD_DEVICE_INDEX]
47  *     [NBD_DEVICE_CONNECTED]
48  */
49 enum {
50 	NBD_DEVICE_ITEM_UNSPEC,
51 	NBD_DEVICE_ITEM,
52 	__NBD_DEVICE_ITEM_MAX,
53 };
54 #define NBD_DEVICE_ITEM_MAX (__NBD_DEVICE_ITEM_MAX - 1)
55 
56 enum {
57 	NBD_DEVICE_UNSPEC,
58 	NBD_DEVICE_INDEX,
59 	NBD_DEVICE_CONNECTED,
60 	__NBD_DEVICE_MAX,
61 };
62 #define NBD_DEVICE_ATTR_MAX (__NBD_DEVICE_MAX - 1)
63 
64 /*
65  * This is the format for multiple sockets with NBD_ATTR_SOCKETS
66  *
67  * [NBD_ATTR_SOCKETS]
68  *   [NBD_SOCK_ITEM]
69  *     [NBD_SOCK_FD]
70  *   [NBD_SOCK_ITEM]
71  *     [NBD_SOCK_FD]
72  */
73 enum {
74 	NBD_SOCK_ITEM_UNSPEC,
75 	NBD_SOCK_ITEM,
76 	__NBD_SOCK_ITEM_MAX,
77 };
78 #define NBD_SOCK_ITEM_MAX (__NBD_SOCK_ITEM_MAX - 1)
79 
80 enum {
81 	NBD_SOCK_UNSPEC,
82 	NBD_SOCK_FD,
83 	__NBD_SOCK_MAX,
84 };
85 #define NBD_SOCK_MAX (__NBD_SOCK_MAX - 1)
86 
87 enum {
88 	NBD_CMD_UNSPEC,
89 	NBD_CMD_CONNECT,
90 	NBD_CMD_DISCONNECT,
91 	NBD_CMD_RECONFIGURE,
92 	NBD_CMD_LINK_DEAD,
93 	NBD_CMD_STATUS,
94 	__NBD_CMD_MAX,
95 };
96 #define NBD_CMD_MAX	(__NBD_CMD_MAX - 1)
97 
98 #endif /* _UAPILINUX_NBD_NETLINK_H */
99