File: nbd-netlink.h

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/*
 * Copyright (C) 2017 Facebook.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License v2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 021110-1307, USA.
 */
#ifndef _UAPILINUX_NBD_NETLINK_H
#define _UAPILINUX_NBD_NETLINK_H

#define NBD_GENL_FAMILY_NAME	"nbd"
#define NBD_GENL_VERSION	0x1

/* Configuration policy attributes, used for CONNECT */
enum {
	NBD_ATTR_UNSPEC,
	NBD_ATTR_INDEX,
	NBD_ATTR_SIZE_BYTES,
	NBD_ATTR_BLOCK_SIZE_BYTES,
	NBD_ATTR_TIMEOUT,
	NBD_ATTR_SERVER_FLAGS,
	NBD_ATTR_CLIENT_FLAGS,
	NBD_ATTR_SOCKETS,
	__NBD_ATTR_MAX,
};
#define NBD_ATTR_MAX (__NBD_ATTR_MAX - 1)

/*
 * This is the format for multiple sockets with NBD_ATTR_SOCKETS
 *
 * [NBD_ATTR_SOCKETS]
 *   [NBD_SOCK_ITEM]
 *     [NBD_SOCK_FD]
 *   [NBD_SOCK_ITEM]
 *     [NBD_SOCK_FD]
 */
enum {
	NBD_SOCK_ITEM_UNSPEC,
	NBD_SOCK_ITEM,
	__NBD_SOCK_ITEM_MAX,
};
#define NBD_SOCK_ITEM_MAX (__NBD_SOCK_ITEM_MAX - 1)

enum {
	NBD_SOCK_UNSPEC,
	NBD_SOCK_FD,
	__NBD_SOCK_MAX,
};
#define NBD_SOCK_MAX (__NBD_SOCK_MAX - 1)

enum {
	NBD_CMD_UNSPEC,
	NBD_CMD_CONNECT,
	NBD_CMD_DISCONNECT,
	__NBD_CMD_MAX,
};
#define NBD_CMD_MAX	(__NBD_CMD_MAX - 1)

#endif /* _UAPILINUX_NBD_NETLINK_H */