/* * libipvs.h:	header file for the library ipvs * * Version:	$Id: libipvs.h,v 1.7 2003/06/08 09:31:39 wensong Exp $ * * Authors:	Wensong Zhang <wensong@linuxvirtualserver.org> * */#ifndef _LIBIPVS_H#define _LIBIPVS_H#ifdef HAVE_NET_IP_VS_H#include <net/ip_vs.h>#else#include "ip_vs.h"#endif#define MINIMUM_IPVS_VERSION_MAJOR      1#define MINIMUM_IPVS_VERSION_MINOR      1#define MINIMUM_IPVS_VERSION_PATCH      4#ifndef IPVS_VERSION#define IPVS_VERSION(x,y,z)		(((x)<<16)+((y)<<8)+(z))#endif/* * The default IPVS_SVC_PERSISTENT_TIMEOUT is a little larger than average * connection time plus IPVS TCP FIN timeout (2*60 seconds). Because the * connection template won't be released until its controlled connection * entries are expired. * If IPVS_SVC_PERSISTENT_TIMEOUT is too less, the template will expire * soon and will be put in expire again and again, which causes additional * overhead. If it is too large, the same will always visit the same * server, which may make dynamic load imbalance worse. */#define IPVS_SVC_PERSISTENT_TIMEOUT	(6*60)typedef struct ip_vs_service_user	ipvs_service_t;typedef struct ip_vs_dest_user		ipvs_dest_t;typedef struct ip_vs_timeout_user	ipvs_timeout_t;typedef struct ip_vs_daemon_user	ipvs_daemon_t;typedef struct ip_vs_service_entry	ipvs_service_entry_t;typedef struct ip_vs_dest_entry		ipvs_dest_entry_t;/* ipvs info variable */extern struct ip_vs_getinfo ipvs_info;/* init socket and get ipvs info */extern int ipvs_init(void);/* get ipvs info separately */extern int ipvs_getinfo(void);/* get the version number */extern unsigned int ipvs_version(void);/* flush all the rules */extern int ipvs_flush(void);/* add a virtual service */extern int ipvs_add_service(ipvs_service_t *svc);/* update a virtual service with new options */extern int ipvs_update_service(ipvs_service_t *svc);/* delete a virtual service */extern int ipvs_del_service(ipvs_service_t *svc);/* zero the counters of a service or all */extern int ipvs_zero_service(ipvs_service_t *svc);/* add a destination server into a service */extern int ipvs_add_dest(ipvs_service_t *svc, ipvs_dest_t *dest);/* update a destination server with new options */extern int ipvs_update_dest(ipvs_service_t *svc, ipvs_dest_t *dest);/* remove a destination server from a service */extern int ipvs_del_dest(ipvs_service_t *svc, ipvs_dest_t *dest);/* set timeout */extern int ipvs_set_timeout(ipvs_timeout_t *to);/* start a connection synchronizaiton daemon (master/backup) */extern int ipvs_start_daemon(ipvs_daemon_t *dm);/* stop a connection synchronizaiton daemon (master/backup) */extern int ipvs_stop_daemon(ipvs_daemon_t *dm);/* get all the ipvs services */extern struct ip_vs_get_services *ipvs_get_services(void);/* sort the service entries */typedef int (*ipvs_service_cmp_t)(ipvs_service_entry_t *,				  ipvs_service_entry_t *);extern int ipvs_cmp_services(ipvs_service_entry_t *s1,			     ipvs_service_entry_t *s2);extern void ipvs_sort_services(struct ip_vs_get_services *s,			       ipvs_service_cmp_t f);/* get the destination array of the specified service */extern struct ip_vs_get_dests *ipvs_get_dests(ipvs_service_entry_t *svc);/* sort the destination entries */typedef int (*ipvs_dest_cmp_t)(ipvs_dest_entry_t *,			       ipvs_dest_entry_t *);extern int ipvs_cmp_dests(ipvs_dest_entry_t *d1,			  ipvs_dest_entry_t *d2);extern void ipvs_sort_dests(struct ip_vs_get_dests *d,			    ipvs_dest_cmp_t f);/* get an ipvs service entry */extern ipvs_service_entry_t *ipvs_get_service(__u32 fwmark, __u16 protocol, __u32 addr, __u16 port);/* get ipvs timeout */extern ipvs_timeout_t *ipvs_get_timeout(void);/* get ipvs daemon information */extern ipvs_daemon_t *ipvs_get_daemon(void);/* close the socket */extern void ipvs_close(void);extern const char *ipvs_strerror(int err);#endif /* _LIBIPVS_H */