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 */
27enum {
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 */
51enum {
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
58enum {
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 */
75enum {
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
82enum {
83	NBD_SOCK_UNSPEC,
84	NBD_SOCK_FD,
85	__NBD_SOCK_MAX,
86};
87#define NBD_SOCK_MAX (__NBD_SOCK_MAX - 1)
88
89enum {
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