47d902b90a
Allow users to query the status of existing nbd devices. Right now this only returns whether or not the device is connected, but could be extended in the future to include more information. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
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* Copyright (C) 2017 Facebook. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef _UAPILINUX_NBD_NETLINK_H
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#define _UAPILINUX_NBD_NETLINK_H
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#define NBD_GENL_FAMILY_NAME "nbd"
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#define NBD_GENL_VERSION 0x1
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#define NBD_GENL_MCAST_GROUP_NAME "nbd_mc_group"
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/* Configuration policy attributes, used for CONNECT */
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enum {
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NBD_ATTR_UNSPEC,
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NBD_ATTR_INDEX,
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NBD_ATTR_SIZE_BYTES,
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NBD_ATTR_BLOCK_SIZE_BYTES,
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NBD_ATTR_TIMEOUT,
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NBD_ATTR_SERVER_FLAGS,
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NBD_ATTR_CLIENT_FLAGS,
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NBD_ATTR_SOCKETS,
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NBD_ATTR_DEAD_CONN_TIMEOUT,
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NBD_ATTR_DEVICE_LIST,
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__NBD_ATTR_MAX,
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};
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#define NBD_ATTR_MAX (__NBD_ATTR_MAX - 1)
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/*
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* This is the format for multiple devices with NBD_ATTR_DEVICE_LIST
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*
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* [NBD_ATTR_DEVICE_LIST]
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* [NBD_DEVICE_ITEM]
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* [NBD_DEVICE_INDEX]
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* [NBD_DEVICE_CONNECTED]
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*/
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enum {
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NBD_DEVICE_ITEM_UNSPEC,
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NBD_DEVICE_ITEM,
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__NBD_DEVICE_ITEM_MAX,
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};
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#define NBD_DEVICE_ITEM_MAX (__NBD_DEVICE_ITEM_MAX - 1)
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enum {
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NBD_DEVICE_UNSPEC,
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NBD_DEVICE_INDEX,
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NBD_DEVICE_CONNECTED,
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__NBD_DEVICE_MAX,
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};
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#define NBD_DEVICE_ATTR_MAX (__NBD_DEVICE_MAX - 1)
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/*
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* This is the format for multiple sockets with NBD_ATTR_SOCKETS
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*
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* [NBD_ATTR_SOCKETS]
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* [NBD_SOCK_ITEM]
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* [NBD_SOCK_FD]
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* [NBD_SOCK_ITEM]
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* [NBD_SOCK_FD]
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*/
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enum {
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NBD_SOCK_ITEM_UNSPEC,
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NBD_SOCK_ITEM,
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__NBD_SOCK_ITEM_MAX,
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};
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#define NBD_SOCK_ITEM_MAX (__NBD_SOCK_ITEM_MAX - 1)
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enum {
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NBD_SOCK_UNSPEC,
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NBD_SOCK_FD,
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__NBD_SOCK_MAX,
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};
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#define NBD_SOCK_MAX (__NBD_SOCK_MAX - 1)
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enum {
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NBD_CMD_UNSPEC,
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NBD_CMD_CONNECT,
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NBD_CMD_DISCONNECT,
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NBD_CMD_RECONFIGURE,
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NBD_CMD_LINK_DEAD,
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NBD_CMD_STATUS,
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__NBD_CMD_MAX,
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};
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#define NBD_CMD_MAX (__NBD_CMD_MAX - 1)
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#endif /* _UAPILINUX_NBD_NETLINK_H */
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