include/uapi/linux/ip_vs.h - kernel/msm-4.19 - Gitiles

 /*
  *      IP Virtual Server
  *      data structure and functionality definitions
  */

 #ifndef _IP_VS_H
 #define _IP_VS_H

 #include <linux/types.h>	/* For __beXX types in userland */

 #define IP_VS_VERSION_CODE	0x010201
 #define NVERSION(version)			\
 	(version >> 16) & 0xFF,			\
 	(version >> 8) & 0xFF,			\
 	version & 0xFF

 /*
  *      Virtual Service Flags
  */
 #define IP_VS_SVC_F_PERSISTENT	0x0001		/* persistent port */
 #define IP_VS_SVC_F_HASHED	0x0002		/* hashed entry */
 #define IP_VS_SVC_F_ONEPACKET	0x0004		/* one-packet scheduling */
 #define IP_VS_SVC_F_SCHED1	0x0008		/* scheduler flag 1 */
 #define IP_VS_SVC_F_SCHED2	0x0010		/* scheduler flag 2 */
 #define IP_VS_SVC_F_SCHED3	0x0020		/* scheduler flag 3 */

 #define IP_VS_SVC_F_SCHED_SH_FALLBACK	IP_VS_SVC_F_SCHED1 /* SH fallback */
 #define IP_VS_SVC_F_SCHED_SH_PORT	IP_VS_SVC_F_SCHED2 /* SH use port */

 /*
  *      Destination Server Flags
  */
 #define IP_VS_DEST_F_AVAILABLE	0x0001		/* server is available */
 #define IP_VS_DEST_F_OVERLOAD	0x0002		/* server is overloaded */

 /*
  *      IPVS sync daemon states
  */
 #define IP_VS_STATE_NONE	0x0000		/* daemon is stopped */
 #define IP_VS_STATE_MASTER	0x0001		/* started as master */
 #define IP_VS_STATE_BACKUP	0x0002		/* started as backup */

 /*
  *      IPVS socket options
  */
 #define IP_VS_BASE_CTL		(64+1024+64)		/* base */

 #define IP_VS_SO_SET_NONE	IP_VS_BASE_CTL		/* just peek */
 #define IP_VS_SO_SET_INSERT	(IP_VS_BASE_CTL+1)
 #define IP_VS_SO_SET_ADD	(IP_VS_BASE_CTL+2)
 #define IP_VS_SO_SET_EDIT	(IP_VS_BASE_CTL+3)
 #define IP_VS_SO_SET_DEL	(IP_VS_BASE_CTL+4)
 #define IP_VS_SO_SET_FLUSH	(IP_VS_BASE_CTL+5)
 #define IP_VS_SO_SET_LIST	(IP_VS_BASE_CTL+6)
 #define IP_VS_SO_SET_ADDDEST	(IP_VS_BASE_CTL+7)
 #define IP_VS_SO_SET_DELDEST	(IP_VS_BASE_CTL+8)
 #define IP_VS_SO_SET_EDITDEST	(IP_VS_BASE_CTL+9)
 #define IP_VS_SO_SET_TIMEOUT	(IP_VS_BASE_CTL+10)
 #define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11)
 #define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12)
 #define IP_VS_SO_SET_RESTORE    (IP_VS_BASE_CTL+13)
 #define IP_VS_SO_SET_SAVE       (IP_VS_BASE_CTL+14)
 #define IP_VS_SO_SET_ZERO	(IP_VS_BASE_CTL+15)
 #define IP_VS_SO_SET_MAX	IP_VS_SO_SET_ZERO

 #define IP_VS_SO_GET_VERSION	IP_VS_BASE_CTL
 #define IP_VS_SO_GET_INFO	(IP_VS_BASE_CTL+1)
 #define IP_VS_SO_GET_SERVICES	(IP_VS_BASE_CTL+2)
 #define IP_VS_SO_GET_SERVICE	(IP_VS_BASE_CTL+3)
 #define IP_VS_SO_GET_DESTS	(IP_VS_BASE_CTL+4)
 #define IP_VS_SO_GET_DEST	(IP_VS_BASE_CTL+5)	/* not used now */
 #define IP_VS_SO_GET_TIMEOUT	(IP_VS_BASE_CTL+6)
 #define IP_VS_SO_GET_DAEMON	(IP_VS_BASE_CTL+7)
 #define IP_VS_SO_GET_MAX	IP_VS_SO_GET_DAEMON


 /*
  *      IPVS Connection Flags
  *      Only flags 0..15 are sent to backup server
  */
 #define IP_VS_CONN_F_FWD_MASK	0x0007		/* mask for the fwd methods */
 #define IP_VS_CONN_F_MASQ	0x0000		/* masquerading/NAT */
 #define IP_VS_CONN_F_LOCALNODE	0x0001		/* local node */
 #define IP_VS_CONN_F_TUNNEL	0x0002		/* tunneling */
 #define IP_VS_CONN_F_DROUTE	0x0003		/* direct routing */
 #define IP_VS_CONN_F_BYPASS	0x0004		/* cache bypass */
 #define IP_VS_CONN_F_SYNC	0x0020		/* entry created by sync */
 #define IP_VS_CONN_F_HASHED	0x0040		/* hashed entry */
 #define IP_VS_CONN_F_NOOUTPUT	0x0080		/* no output packets */
 #define IP_VS_CONN_F_INACTIVE	0x0100		/* not established */
 #define IP_VS_CONN_F_OUT_SEQ	0x0200		/* must do output seq adjust */
 #define IP_VS_CONN_F_IN_SEQ	0x0400		/* must do input seq adjust */
 #define IP_VS_CONN_F_SEQ_MASK	0x0600		/* in/out sequence mask */
 #define IP_VS_CONN_F_NO_CPORT	0x0800		/* no client port set yet */
 #define IP_VS_CONN_F_TEMPLATE	0x1000		/* template, not connection */
 #define IP_VS_CONN_F_ONE_PACKET	0x2000		/* forward only one packet */

 /* Initial bits allowed in backup server */
 #define IP_VS_CONN_F_BACKUP_MASK (IP_VS_CONN_F_FWD_MASK | \
 				  IP_VS_CONN_F_NOOUTPUT | \
 				  IP_VS_CONN_F_INACTIVE | \
 				  IP_VS_CONN_F_SEQ_MASK | \
 				  IP_VS_CONN_F_NO_CPORT | \
 				  IP_VS_CONN_F_TEMPLATE \
 				 )

 /* Bits allowed to update in backup server */
 #define IP_VS_CONN_F_BACKUP_UPD_MASK (IP_VS_CONN_F_INACTIVE | \
 				      IP_VS_CONN_F_SEQ_MASK)

 /* Flags that are not sent to backup server start from bit 16 */
 #define IP_VS_CONN_F_NFCT	(1 << 16)	/* use netfilter conntrack */

 /* Connection flags from destination that can be changed by user space */
 #define IP_VS_CONN_F_DEST_MASK (IP_VS_CONN_F_FWD_MASK | \
 				IP_VS_CONN_F_ONE_PACKET | \
 				IP_VS_CONN_F_NFCT | \
 				0)

 #define IP_VS_SCHEDNAME_MAXLEN	16
 #define IP_VS_PENAME_MAXLEN	16
 #define IP_VS_IFNAME_MAXLEN	16

 #define IP_VS_PEDATA_MAXLEN     255

 /*
  *	The struct ip_vs_service_user and struct ip_vs_dest_user are
  *	used to set IPVS rules through setsockopt.
  */
 struct ip_vs_service_user {
 	/* virtual service addresses */
 	__u16		protocol;
 	__be32			addr;		/* virtual ip address */
 	__be16			port;
 	__u32		fwmark;		/* firwall mark of service */

 	/* virtual service options */
 	char			sched_name[IP_VS_SCHEDNAME_MAXLEN];
 	unsigned int		flags;		/* virtual service flags */
 	unsigned int		timeout;	/* persistent timeout in sec */
 	__be32			netmask;	/* persistent netmask */
 };


 struct ip_vs_dest_user {
 	/* destination server address */
 	__be32			addr;
 	__be16			port;

 	/* real server options */
 	unsigned int		conn_flags;	/* connection flags */
 	int			weight;		/* destination weight */

 	/* thresholds for active connections */
 	__u32		u_threshold;	/* upper threshold */
 	__u32		l_threshold;	/* lower threshold */
 };


 /*
  *	IPVS statistics object (for user space)
  */
 struct ip_vs_stats_user {
 	__u32                   conns;          /* connections scheduled */
 	__u32                   inpkts;         /* incoming packets */
 	__u32                   outpkts;        /* outgoing packets */
 	__u64                   inbytes;        /* incoming bytes */
 	__u64                   outbytes;       /* outgoing bytes */

 	__u32			cps;		/* current connection rate */
 	__u32			inpps;		/* current in packet rate */
 	__u32			outpps;		/* current out packet rate */
 	__u32			inbps;		/* current in byte rate */
 	__u32			outbps;		/* current out byte rate */
 };


 /* The argument to IP_VS_SO_GET_INFO */
 struct ip_vs_getinfo {
 	/* version number */
 	unsigned int		version;

 	/* size of connection hash table */
 	unsigned int		size;

 	/* number of virtual services */
 	unsigned int		num_services;
 };


 /* The argument to IP_VS_SO_GET_SERVICE */
 struct ip_vs_service_entry {
 	/* which service: user fills in these */
 	__u16		protocol;
 	__be32			addr;		/* virtual address */
 	__be16			port;
 	__u32		fwmark;		/* firwall mark of service */

 	/* service options */
 	char			sched_name[IP_VS_SCHEDNAME_MAXLEN];
 	unsigned int		flags;          /* virtual service flags */
 	unsigned int		timeout;	/* persistent timeout */
 	__be32			netmask;	/* persistent netmask */

 	/* number of real servers */
 	unsigned int		num_dests;

 	/* statistics */
 	struct ip_vs_stats_user stats;
 };


 struct ip_vs_dest_entry {
 	__be32			addr;		/* destination address */
 	__be16			port;
 	unsigned int		conn_flags;	/* connection flags */
 	int			weight;		/* destination weight */

 	__u32		u_threshold;	/* upper threshold */
 	__u32		l_threshold;	/* lower threshold */

 	__u32		activeconns;	/* active connections */
 	__u32		inactconns;	/* inactive connections */
 	__u32		persistconns;	/* persistent connections */

 	/* statistics */
 	struct ip_vs_stats_user stats;
 };


 /* The argument to IP_VS_SO_GET_DESTS */
 struct ip_vs_get_dests {
 	/* which service: user fills in these */
 	__u16		protocol;
 	__be32			addr;		/* virtual address */
 	__be16			port;
 	__u32		fwmark;		/* firwall mark of service */

 	/* number of real servers */
 	unsigned int		num_dests;

 	/* the real servers */
 	struct ip_vs_dest_entry	entrytable[0];
 };


 /* The argument to IP_VS_SO_GET_SERVICES */
 struct ip_vs_get_services {
 	/* number of virtual services */
 	unsigned int		num_services;

 	/* service table */
 	struct ip_vs_service_entry entrytable[0];
 };


 /* The argument to IP_VS_SO_GET_TIMEOUT */
 struct ip_vs_timeout_user {
 	int			tcp_timeout;
 	int			tcp_fin_timeout;
 	int			udp_timeout;
 };


 /* The argument to IP_VS_SO_GET_DAEMON */
 struct ip_vs_daemon_user {
 	/* sync daemon state (master/backup) */
 	int			state;

 	/* multicast interface name */
 	char			mcast_ifn[IP_VS_IFNAME_MAXLEN];

 	/* SyncID we belong to */
 	int			syncid;
 };

 /*
  *
  * IPVS Generic Netlink interface definitions
  *
  */

 /* Generic Netlink family info */

 #define IPVS_GENL_NAME		"IPVS"
 #define IPVS_GENL_VERSION	0x1

 struct ip_vs_flags {
 	__u32 flags;
 	__u32 mask;
 };

 /* Generic Netlink command attributes */
 enum {
 	IPVS_CMD_UNSPEC = 0,

 	IPVS_CMD_NEW_SERVICE,		/* add service */
 	IPVS_CMD_SET_SERVICE,		/* modify service */
 	IPVS_CMD_DEL_SERVICE,		/* delete service */
 	IPVS_CMD_GET_SERVICE,		/* get service info */

 	IPVS_CMD_NEW_DEST,		/* add destination */
 	IPVS_CMD_SET_DEST,		/* modify destination */
 	IPVS_CMD_DEL_DEST,		/* delete destination */
 	IPVS_CMD_GET_DEST,		/* get destination info */

 	IPVS_CMD_NEW_DAEMON,		/* start sync daemon */
 	IPVS_CMD_DEL_DAEMON,		/* stop sync daemon */
 	IPVS_CMD_GET_DAEMON,		/* get sync daemon status */

 	IPVS_CMD_SET_CONFIG,		/* set config settings */
 	IPVS_CMD_GET_CONFIG,		/* get config settings */

 	IPVS_CMD_SET_INFO,		/* only used in GET_INFO reply */
 	IPVS_CMD_GET_INFO,		/* get general IPVS info */

 	IPVS_CMD_ZERO,			/* zero all counters and stats */
 	IPVS_CMD_FLUSH,			/* flush services and dests */

 	__IPVS_CMD_MAX,
 };

 #define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1)

 /* Attributes used in the first level of commands */
 enum {
 	IPVS_CMD_ATTR_UNSPEC = 0,
 	IPVS_CMD_ATTR_SERVICE,		/* nested service attribute */
 	IPVS_CMD_ATTR_DEST,		/* nested destination attribute */
 	IPVS_CMD_ATTR_DAEMON,		/* nested sync daemon attribute */
 	IPVS_CMD_ATTR_TIMEOUT_TCP,	/* TCP connection timeout */
 	IPVS_CMD_ATTR_TIMEOUT_TCP_FIN,	/* TCP FIN wait timeout */
 	IPVS_CMD_ATTR_TIMEOUT_UDP,	/* UDP timeout */
 	__IPVS_CMD_ATTR_MAX,
 };

 #define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)

 /*
  * Attributes used to describe a service
  *
  * Used inside nested attribute IPVS_CMD_ATTR_SERVICE
  */
 enum {
 	IPVS_SVC_ATTR_UNSPEC = 0,
 	IPVS_SVC_ATTR_AF,		/* address family */
 	IPVS_SVC_ATTR_PROTOCOL,		/* virtual service protocol */
 	IPVS_SVC_ATTR_ADDR,		/* virtual service address */
 	IPVS_SVC_ATTR_PORT,		/* virtual service port */
 	IPVS_SVC_ATTR_FWMARK,		/* firewall mark of service */

 	IPVS_SVC_ATTR_SCHED_NAME,	/* name of scheduler */
 	IPVS_SVC_ATTR_FLAGS,		/* virtual service flags */
 	IPVS_SVC_ATTR_TIMEOUT,		/* persistent timeout */
 	IPVS_SVC_ATTR_NETMASK,		/* persistent netmask */

 	IPVS_SVC_ATTR_STATS,		/* nested attribute for service stats */

 	IPVS_SVC_ATTR_PE_NAME,		/* name of ct retriever */

 	__IPVS_SVC_ATTR_MAX,
 };

 #define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)

 /*
  * Attributes used to describe a destination (real server)
  *
  * Used inside nested attribute IPVS_CMD_ATTR_DEST
  */
 enum {
 	IPVS_DEST_ATTR_UNSPEC = 0,
 	IPVS_DEST_ATTR_ADDR,		/* real server address */
 	IPVS_DEST_ATTR_PORT,		/* real server port */

 	IPVS_DEST_ATTR_FWD_METHOD,	/* forwarding method */
 	IPVS_DEST_ATTR_WEIGHT,		/* destination weight */

 	IPVS_DEST_ATTR_U_THRESH,	/* upper threshold */
 	IPVS_DEST_ATTR_L_THRESH,	/* lower threshold */

 	IPVS_DEST_ATTR_ACTIVE_CONNS,	/* active connections */
 	IPVS_DEST_ATTR_INACT_CONNS,	/* inactive connections */
 	IPVS_DEST_ATTR_PERSIST_CONNS,	/* persistent connections */

 	IPVS_DEST_ATTR_STATS,		/* nested attribute for dest stats */
 	__IPVS_DEST_ATTR_MAX,
 };

 #define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1)

 /*
  * Attributes describing a sync daemon
  *
  * Used inside nested attribute IPVS_CMD_ATTR_DAEMON
  */
 enum {
 	IPVS_DAEMON_ATTR_UNSPEC = 0,
 	IPVS_DAEMON_ATTR_STATE,		/* sync daemon state (master/backup) */
 	IPVS_DAEMON_ATTR_MCAST_IFN,	/* multicast interface name */
 	IPVS_DAEMON_ATTR_SYNC_ID,	/* SyncID we belong to */
 	__IPVS_DAEMON_ATTR_MAX,
 };

 #define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1)

 /*
  * Attributes used to describe service or destination entry statistics
  *
  * Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS
  */
 enum {
 	IPVS_STATS_ATTR_UNSPEC = 0,
 	IPVS_STATS_ATTR_CONNS,		/* connections scheduled */
 	IPVS_STATS_ATTR_INPKTS,		/* incoming packets */
 	IPVS_STATS_ATTR_OUTPKTS,	/* outgoing packets */
 	IPVS_STATS_ATTR_INBYTES,	/* incoming bytes */
 	IPVS_STATS_ATTR_OUTBYTES,	/* outgoing bytes */

 	IPVS_STATS_ATTR_CPS,		/* current connection rate */
 	IPVS_STATS_ATTR_INPPS,		/* current in packet rate */
 	IPVS_STATS_ATTR_OUTPPS,		/* current out packet rate */
 	IPVS_STATS_ATTR_INBPS,		/* current in byte rate */
 	IPVS_STATS_ATTR_OUTBPS,		/* current out byte rate */
 	__IPVS_STATS_ATTR_MAX,
 };

 #define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1)

 /* Attributes used in response to IPVS_CMD_GET_INFO command */
 enum {
 	IPVS_INFO_ATTR_UNSPEC = 0,
 	IPVS_INFO_ATTR_VERSION,		/* IPVS version number */
 	IPVS_INFO_ATTR_CONN_TAB_SIZE,	/* size of connection hash table */
 	__IPVS_INFO_ATTR_MAX,
 };

 #define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1)

 #endif	/* _IP_VS_H */
	/*
	* IP Virtual Server
	* data structure and functionality definitions
	*/

	#ifndef _IP_VS_H
	#define _IP_VS_H

	#include <linux/types.h> /* For __beXX types in userland */

	#define IP_VS_VERSION_CODE 0x010201
	#define NVERSION(version) \
	(version >> 16) & 0xFF, \
	(version >> 8) & 0xFF, \
	version & 0xFF

	/*
	* Virtual Service Flags
	*/
	#define IP_VS_SVC_F_PERSISTENT 0x0001 /* persistent port */
	#define IP_VS_SVC_F_HASHED 0x0002 /* hashed entry */
	#define IP_VS_SVC_F_ONEPACKET 0x0004 /* one-packet scheduling */
	#define IP_VS_SVC_F_SCHED1 0x0008 /* scheduler flag 1 */
	#define IP_VS_SVC_F_SCHED2 0x0010 /* scheduler flag 2 */
	#define IP_VS_SVC_F_SCHED3 0x0020 /* scheduler flag 3 */

	#define IP_VS_SVC_F_SCHED_SH_FALLBACK IP_VS_SVC_F_SCHED1 /* SH fallback */
	#define IP_VS_SVC_F_SCHED_SH_PORT IP_VS_SVC_F_SCHED2 /* SH use port */

	/*
	* Destination Server Flags
	*/
	#define IP_VS_DEST_F_AVAILABLE 0x0001 /* server is available */
	#define IP_VS_DEST_F_OVERLOAD 0x0002 /* server is overloaded */

	/*
	* IPVS sync daemon states
	*/
	#define IP_VS_STATE_NONE 0x0000 /* daemon is stopped */
	#define IP_VS_STATE_MASTER 0x0001 /* started as master */
	#define IP_VS_STATE_BACKUP 0x0002 /* started as backup */

	/*
	* IPVS socket options
	*/
	#define IP_VS_BASE_CTL (64+1024+64) /* base */

	#define IP_VS_SO_SET_NONE IP_VS_BASE_CTL /* just peek */
	#define IP_VS_SO_SET_INSERT (IP_VS_BASE_CTL+1)
	#define IP_VS_SO_SET_ADD (IP_VS_BASE_CTL+2)
	#define IP_VS_SO_SET_EDIT (IP_VS_BASE_CTL+3)
	#define IP_VS_SO_SET_DEL (IP_VS_BASE_CTL+4)
	#define IP_VS_SO_SET_FLUSH (IP_VS_BASE_CTL+5)
	#define IP_VS_SO_SET_LIST (IP_VS_BASE_CTL+6)
	#define IP_VS_SO_SET_ADDDEST (IP_VS_BASE_CTL+7)
	#define IP_VS_SO_SET_DELDEST (IP_VS_BASE_CTL+8)
	#define IP_VS_SO_SET_EDITDEST (IP_VS_BASE_CTL+9)
	#define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10)
	#define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11)
	#define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12)
	#define IP_VS_SO_SET_RESTORE (IP_VS_BASE_CTL+13)
	#define IP_VS_SO_SET_SAVE (IP_VS_BASE_CTL+14)
	#define IP_VS_SO_SET_ZERO (IP_VS_BASE_CTL+15)
	#define IP_VS_SO_SET_MAX IP_VS_SO_SET_ZERO

	#define IP_VS_SO_GET_VERSION IP_VS_BASE_CTL
	#define IP_VS_SO_GET_INFO (IP_VS_BASE_CTL+1)
	#define IP_VS_SO_GET_SERVICES (IP_VS_BASE_CTL+2)
	#define IP_VS_SO_GET_SERVICE (IP_VS_BASE_CTL+3)
	#define IP_VS_SO_GET_DESTS (IP_VS_BASE_CTL+4)
	#define IP_VS_SO_GET_DEST (IP_VS_BASE_CTL+5) /* not used now */
	#define IP_VS_SO_GET_TIMEOUT (IP_VS_BASE_CTL+6)
	#define IP_VS_SO_GET_DAEMON (IP_VS_BASE_CTL+7)
	#define IP_VS_SO_GET_MAX IP_VS_SO_GET_DAEMON


	/*
	* IPVS Connection Flags
	* Only flags 0..15 are sent to backup server
	*/
	#define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */
	#define IP_VS_CONN_F_MASQ 0x0000 /* masquerading/NAT */
	#define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */
	#define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */
	#define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */
	#define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */
	#define IP_VS_CONN_F_SYNC 0x0020 /* entry created by sync */
	#define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */
	#define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */
	#define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */
	#define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */
	#define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */
	#define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */
	#define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */
	#define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */
	#define IP_VS_CONN_F_ONE_PACKET 0x2000 /* forward only one packet */

	/* Initial bits allowed in backup server */
	#define IP_VS_CONN_F_BACKUP_MASK (IP_VS_CONN_F_FWD_MASK \| \
	IP_VS_CONN_F_NOOUTPUT \| \
	IP_VS_CONN_F_INACTIVE \| \
	IP_VS_CONN_F_SEQ_MASK \| \
	IP_VS_CONN_F_NO_CPORT \| \
	IP_VS_CONN_F_TEMPLATE \
	)

	/* Bits allowed to update in backup server */
	#define IP_VS_CONN_F_BACKUP_UPD_MASK (IP_VS_CONN_F_INACTIVE \| \
	IP_VS_CONN_F_SEQ_MASK)

	/* Flags that are not sent to backup server start from bit 16 */
	#define IP_VS_CONN_F_NFCT (1 << 16) /* use netfilter conntrack */

	/* Connection flags from destination that can be changed by user space */
	#define IP_VS_CONN_F_DEST_MASK (IP_VS_CONN_F_FWD_MASK \| \
	IP_VS_CONN_F_ONE_PACKET \| \
	IP_VS_CONN_F_NFCT \| \
	0)

	#define IP_VS_SCHEDNAME_MAXLEN 16
	#define IP_VS_PENAME_MAXLEN 16
	#define IP_VS_IFNAME_MAXLEN 16

	#define IP_VS_PEDATA_MAXLEN 255

	/*
	* The struct ip_vs_service_user and struct ip_vs_dest_user are
	* used to set IPVS rules through setsockopt.
	*/
	struct ip_vs_service_user {
	/* virtual service addresses */
	__u16 protocol;
	__be32 addr; /* virtual ip address */
	__be16 port;
	__u32 fwmark; /* firwall mark of service */

	/* virtual service options */
	char sched_name[IP_VS_SCHEDNAME_MAXLEN];
	unsigned int flags; /* virtual service flags */
	unsigned int timeout; /* persistent timeout in sec */
	__be32 netmask; /* persistent netmask */
	};


	struct ip_vs_dest_user {
	/* destination server address */
	__be32 addr;
	__be16 port;

	/* real server options */
	unsigned int conn_flags; /* connection flags */
	int weight; /* destination weight */

	/* thresholds for active connections */
	__u32 u_threshold; /* upper threshold */
	__u32 l_threshold; /* lower threshold */
	};


	/*
	* IPVS statistics object (for user space)
	*/
	struct ip_vs_stats_user {
	__u32 conns; /* connections scheduled */
	__u32 inpkts; /* incoming packets */
	__u32 outpkts; /* outgoing packets */
	__u64 inbytes; /* incoming bytes */
	__u64 outbytes; /* outgoing bytes */

	__u32 cps; /* current connection rate */
	__u32 inpps; /* current in packet rate */
	__u32 outpps; /* current out packet rate */
	__u32 inbps; /* current in byte rate */
	__u32 outbps; /* current out byte rate */
	};


	/* The argument to IP_VS_SO_GET_INFO */
	struct ip_vs_getinfo {
	/* version number */
	unsigned int version;

	/* size of connection hash table */
	unsigned int size;

	/* number of virtual services */
	unsigned int num_services;
	};


	/* The argument to IP_VS_SO_GET_SERVICE */
	struct ip_vs_service_entry {
	/* which service: user fills in these */
	__u16 protocol;
	__be32 addr; /* virtual address */
	__be16 port;
	__u32 fwmark; /* firwall mark of service */

	/* service options */
	char sched_name[IP_VS_SCHEDNAME_MAXLEN];
	unsigned int flags; /* virtual service flags */
	unsigned int timeout; /* persistent timeout */
	__be32 netmask; /* persistent netmask */

	/* number of real servers */
	unsigned int num_dests;

	/* statistics */
	struct ip_vs_stats_user stats;
	};


	struct ip_vs_dest_entry {
	__be32 addr; /* destination address */
	__be16 port;
	unsigned int conn_flags; /* connection flags */
	int weight; /* destination weight */

	__u32 u_threshold; /* upper threshold */
	__u32 l_threshold; /* lower threshold */

	__u32 activeconns; /* active connections */
	__u32 inactconns; /* inactive connections */
	__u32 persistconns; /* persistent connections */

	/* statistics */
	struct ip_vs_stats_user stats;
	};


	/* The argument to IP_VS_SO_GET_DESTS */
	struct ip_vs_get_dests {
	/* which service: user fills in these */
	__u16 protocol;
	__be32 addr; /* virtual address */
	__be16 port;
	__u32 fwmark; /* firwall mark of service */

	/* number of real servers */
	unsigned int num_dests;

	/* the real servers */
	struct ip_vs_dest_entry entrytable[0];
	};


	/* The argument to IP_VS_SO_GET_SERVICES */
	struct ip_vs_get_services {
	/* number of virtual services */
	unsigned int num_services;

	/* service table */
	struct ip_vs_service_entry entrytable[0];
	};


	/* The argument to IP_VS_SO_GET_TIMEOUT */
	struct ip_vs_timeout_user {
	int tcp_timeout;
	int tcp_fin_timeout;
	int udp_timeout;
	};


	/* The argument to IP_VS_SO_GET_DAEMON */
	struct ip_vs_daemon_user {
	/* sync daemon state (master/backup) */
	int state;

	/* multicast interface name */
	char mcast_ifn[IP_VS_IFNAME_MAXLEN];

	/* SyncID we belong to */
	int syncid;
	};

	/*
	*
	* IPVS Generic Netlink interface definitions
	*
	*/

	/* Generic Netlink family info */

	#define IPVS_GENL_NAME "IPVS"
	#define IPVS_GENL_VERSION 0x1

	struct ip_vs_flags {
	__u32 flags;
	__u32 mask;
	};

	/* Generic Netlink command attributes */
	enum {
	IPVS_CMD_UNSPEC = 0,

	IPVS_CMD_NEW_SERVICE, /* add service */
	IPVS_CMD_SET_SERVICE, /* modify service */
	IPVS_CMD_DEL_SERVICE, /* delete service */
	IPVS_CMD_GET_SERVICE, /* get service info */

	IPVS_CMD_NEW_DEST, /* add destination */
	IPVS_CMD_SET_DEST, /* modify destination */
	IPVS_CMD_DEL_DEST, /* delete destination */
	IPVS_CMD_GET_DEST, /* get destination info */

	IPVS_CMD_NEW_DAEMON, /* start sync daemon */
	IPVS_CMD_DEL_DAEMON, /* stop sync daemon */
	IPVS_CMD_GET_DAEMON, /* get sync daemon status */

	IPVS_CMD_SET_CONFIG, /* set config settings */
	IPVS_CMD_GET_CONFIG, /* get config settings */

	IPVS_CMD_SET_INFO, /* only used in GET_INFO reply */
	IPVS_CMD_GET_INFO, /* get general IPVS info */

	IPVS_CMD_ZERO, /* zero all counters and stats */
	IPVS_CMD_FLUSH, /* flush services and dests */

	__IPVS_CMD_MAX,
	};

	#define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1)

	/* Attributes used in the first level of commands */
	enum {
	IPVS_CMD_ATTR_UNSPEC = 0,
	IPVS_CMD_ATTR_SERVICE, /* nested service attribute */
	IPVS_CMD_ATTR_DEST, /* nested destination attribute */
	IPVS_CMD_ATTR_DAEMON, /* nested sync daemon attribute */
	IPVS_CMD_ATTR_TIMEOUT_TCP, /* TCP connection timeout */
	IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, /* TCP FIN wait timeout */
	IPVS_CMD_ATTR_TIMEOUT_UDP, /* UDP timeout */
	__IPVS_CMD_ATTR_MAX,
	};

	#define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)

	/*
	* Attributes used to describe a service
	*
	* Used inside nested attribute IPVS_CMD_ATTR_SERVICE
	*/
	enum {
	IPVS_SVC_ATTR_UNSPEC = 0,
	IPVS_SVC_ATTR_AF, /* address family */
	IPVS_SVC_ATTR_PROTOCOL, /* virtual service protocol */
	IPVS_SVC_ATTR_ADDR, /* virtual service address */
	IPVS_SVC_ATTR_PORT, /* virtual service port */
	IPVS_SVC_ATTR_FWMARK, /* firewall mark of service */

	IPVS_SVC_ATTR_SCHED_NAME, /* name of scheduler */
	IPVS_SVC_ATTR_FLAGS, /* virtual service flags */
	IPVS_SVC_ATTR_TIMEOUT, /* persistent timeout */
	IPVS_SVC_ATTR_NETMASK, /* persistent netmask */

	IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */

	IPVS_SVC_ATTR_PE_NAME, /* name of ct retriever */

	__IPVS_SVC_ATTR_MAX,
	};

	#define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)

	/*
	* Attributes used to describe a destination (real server)
	*
	* Used inside nested attribute IPVS_CMD_ATTR_DEST
	*/
	enum {
	IPVS_DEST_ATTR_UNSPEC = 0,
	IPVS_DEST_ATTR_ADDR, /* real server address */
	IPVS_DEST_ATTR_PORT, /* real server port */

	IPVS_DEST_ATTR_FWD_METHOD, /* forwarding method */
	IPVS_DEST_ATTR_WEIGHT, /* destination weight */

	IPVS_DEST_ATTR_U_THRESH, /* upper threshold */
	IPVS_DEST_ATTR_L_THRESH, /* lower threshold */

	IPVS_DEST_ATTR_ACTIVE_CONNS, /* active connections */
	IPVS_DEST_ATTR_INACT_CONNS, /* inactive connections */
	IPVS_DEST_ATTR_PERSIST_CONNS, /* persistent connections */

	IPVS_DEST_ATTR_STATS, /* nested attribute for dest stats */
	__IPVS_DEST_ATTR_MAX,
	};

	#define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1)

	/*
	* Attributes describing a sync daemon
	*
	* Used inside nested attribute IPVS_CMD_ATTR_DAEMON
	*/
	enum {
	IPVS_DAEMON_ATTR_UNSPEC = 0,
	IPVS_DAEMON_ATTR_STATE, /* sync daemon state (master/backup) */
	IPVS_DAEMON_ATTR_MCAST_IFN, /* multicast interface name */
	IPVS_DAEMON_ATTR_SYNC_ID, /* SyncID we belong to */
	__IPVS_DAEMON_ATTR_MAX,
	};

	#define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1)

	/*
	* Attributes used to describe service or destination entry statistics
	*
	* Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS
	*/
	enum {
	IPVS_STATS_ATTR_UNSPEC = 0,
	IPVS_STATS_ATTR_CONNS, /* connections scheduled */
	IPVS_STATS_ATTR_INPKTS, /* incoming packets */
	IPVS_STATS_ATTR_OUTPKTS, /* outgoing packets */
	IPVS_STATS_ATTR_INBYTES, /* incoming bytes */
	IPVS_STATS_ATTR_OUTBYTES, /* outgoing bytes */

	IPVS_STATS_ATTR_CPS, /* current connection rate */
	IPVS_STATS_ATTR_INPPS, /* current in packet rate */
	IPVS_STATS_ATTR_OUTPPS, /* current out packet rate */
	IPVS_STATS_ATTR_INBPS, /* current in byte rate */
	IPVS_STATS_ATTR_OUTBPS, /* current out byte rate */
	__IPVS_STATS_ATTR_MAX,
	};

	#define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1)

	/* Attributes used in response to IPVS_CMD_GET_INFO command */
	enum {
	IPVS_INFO_ATTR_UNSPEC = 0,
	IPVS_INFO_ATTR_VERSION, /* IPVS version number */
	IPVS_INFO_ATTR_CONN_TAB_SIZE, /* size of connection hash table */
	__IPVS_INFO_ATTR_MAX,
	};

	#define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1)

	#endif /* _IP_VS_H */