include/uapi/linux/nbd-netlink.h

   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 */