uapi/linux/nbd-netlink.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 /*
0003  * Copyright (C) 2017 Facebook.  All rights reserved.
0004  *
0005  * This program is free software; you can redistribute it and/or
0006  * modify it under the terms of the GNU General Public
0007  * License v2 as published by the Free Software Foundation.
0008  *
0009  * This program is distributed in the hope that it will be useful,
0010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
0011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0012  * General Public License for more details.
0013  *
0014  * You should have received a copy of the GNU General Public
0015  * License along with this program; if not, write to the
0016  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
0017  * Boston, MA 021110-1307, USA.
0018  */
0019 #ifndef _UAPILINUX_NBD_NETLINK_H
0020 #define _UAPILINUX_NBD_NETLINK_H
0021
0022 #define NBD_GENL_FAMILY_NAME        "nbd"
0023 #define NBD_GENL_VERSION        0x1
0024 #define NBD_GENL_MCAST_GROUP_NAME   "nbd_mc_group"
0025
0026 /* Configuration policy attributes, used for CONNECT */
0027 enum {
0028     NBD_ATTR_UNSPEC,
0029     NBD_ATTR_INDEX,
0030     NBD_ATTR_SIZE_BYTES,
0031     NBD_ATTR_BLOCK_SIZE_BYTES,
0032     NBD_ATTR_TIMEOUT,
0033     NBD_ATTR_SERVER_FLAGS,
0034     NBD_ATTR_CLIENT_FLAGS,
0035     NBD_ATTR_SOCKETS,
0036     NBD_ATTR_DEAD_CONN_TIMEOUT,
0037     NBD_ATTR_DEVICE_LIST,
0038     NBD_ATTR_BACKEND_IDENTIFIER,
0039     __NBD_ATTR_MAX,
0040 };
0041 #define NBD_ATTR_MAX (__NBD_ATTR_MAX - 1)
0042
0043 /*
0044  * This is the format for multiple devices with NBD_ATTR_DEVICE_LIST
0045  *
0046  * [NBD_ATTR_DEVICE_LIST]
0047  *   [NBD_DEVICE_ITEM]
0048  *     [NBD_DEVICE_INDEX]
0049  *     [NBD_DEVICE_CONNECTED]
0050  */
0051 enum {
0052     NBD_DEVICE_ITEM_UNSPEC,
0053     NBD_DEVICE_ITEM,
0054     __NBD_DEVICE_ITEM_MAX,
0055 };
0056 #define NBD_DEVICE_ITEM_MAX (__NBD_DEVICE_ITEM_MAX - 1)
0057
0058 enum {
0059     NBD_DEVICE_UNSPEC,
0060     NBD_DEVICE_INDEX,
0061     NBD_DEVICE_CONNECTED,
0062     __NBD_DEVICE_MAX,
0063 };
0064 #define NBD_DEVICE_ATTR_MAX (__NBD_DEVICE_MAX - 1)
0065
0066 /*
0067  * This is the format for multiple sockets with NBD_ATTR_SOCKETS
0068  *
0069  * [NBD_ATTR_SOCKETS]
0070  *   [NBD_SOCK_ITEM]
0071  *     [NBD_SOCK_FD]
0072  *   [NBD_SOCK_ITEM]
0073  *     [NBD_SOCK_FD]
0074  */
0075 enum {
0076     NBD_SOCK_ITEM_UNSPEC,
0077     NBD_SOCK_ITEM,
0078     __NBD_SOCK_ITEM_MAX,
0079 };
0080 #define NBD_SOCK_ITEM_MAX (__NBD_SOCK_ITEM_MAX - 1)
0081
0082 enum {
0083     NBD_SOCK_UNSPEC,
0084     NBD_SOCK_FD,
0085     __NBD_SOCK_MAX,
0086 };
0087 #define NBD_SOCK_MAX (__NBD_SOCK_MAX - 1)
0088
0089 enum {
0090     NBD_CMD_UNSPEC,
0091     NBD_CMD_CONNECT,
0092     NBD_CMD_DISCONNECT,
0093     NBD_CMD_RECONFIGURE,
0094     NBD_CMD_LINK_DEAD,
0095     NBD_CMD_STATUS,
0096     __NBD_CMD_MAX,
0097 };
0098 #define NBD_CMD_MAX (__NBD_CMD_MAX - 1)
0099
0100 #endif /* _UAPILINUX_NBD_NETLINK_H */