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 LINUX_NBD_NETLINK_H
 20#define LINUX_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 /* LINUX_NBD_NETLINK_H */