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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 */
#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 */