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/*
* 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 */
/*
* 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
*/
#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_SCHEDNAME_MAXLEN 16
#define IP_VS_IFNAME_MAXLEN 16
/*
* 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 */
u_int16_t protocol;
__be32 addr; /* virtual ip address */
__be16 port;
u_int32_t fwmark; /* firwall mark of service */
/* virtual service options */
char sched_name[IP_VS_SCHEDNAME_MAXLEN];
unsigned flags; /* virtual service flags */
unsigned 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 conn_flags; /* connection flags */
int weight; /* destination weight */
/* thresholds for active connections */
u_int32_t u_threshold; /* upper threshold */
u_int32_t 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 */
u_int16_t protocol;
__be32 addr; /* virtual address */
__be16 port;
u_int32_t fwmark; /* firwall mark of service */
/* service options */
char sched_name[IP_VS_SCHEDNAME_MAXLEN];
unsigned flags; /* virtual service flags */
unsigned 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 conn_flags; /* connection flags */
int weight; /* destination weight */
u_int32_t u_threshold; /* upper threshold */
u_int32_t l_threshold; /* lower threshold */
u_int32_t activeconns; /* active connections */
u_int32_t inactconns; /* inactive connections */
u_int32_t 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 */
u_int16_t protocol;
__be32 addr; /* virtual address */
__be16 port;
u_int32_t 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;
};
#endif /* _IP_VS_H */
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