406 lines
11 KiB
C
406 lines
11 KiB
C
/*
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* IP Virtual Server
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* data structure and functionality definitions
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*/
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#ifndef _IP_VS_H
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#define _IP_VS_H
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#include <linux/types.h> /* For __beXX types in userland */
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#define IP_VS_VERSION_CODE 0x010201
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#define NVERSION(version) \
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(version >> 16) & 0xFF, \
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(version >> 8) & 0xFF, \
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version & 0xFF
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/*
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* Virtual Service Flags
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*/
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#define IP_VS_SVC_F_PERSISTENT 0x0001 /* persistent port */
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#define IP_VS_SVC_F_HASHED 0x0002 /* hashed entry */
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/*
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* Destination Server Flags
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*/
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#define IP_VS_DEST_F_AVAILABLE 0x0001 /* server is available */
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#define IP_VS_DEST_F_OVERLOAD 0x0002 /* server is overloaded */
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/*
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* IPVS sync daemon states
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*/
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#define IP_VS_STATE_NONE 0x0000 /* daemon is stopped */
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#define IP_VS_STATE_MASTER 0x0001 /* started as master */
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#define IP_VS_STATE_BACKUP 0x0002 /* started as backup */
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/*
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* IPVS socket options
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*/
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#define IP_VS_BASE_CTL (64+1024+64) /* base */
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#define IP_VS_SO_SET_NONE IP_VS_BASE_CTL /* just peek */
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#define IP_VS_SO_SET_INSERT (IP_VS_BASE_CTL+1)
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#define IP_VS_SO_SET_ADD (IP_VS_BASE_CTL+2)
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#define IP_VS_SO_SET_EDIT (IP_VS_BASE_CTL+3)
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#define IP_VS_SO_SET_DEL (IP_VS_BASE_CTL+4)
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#define IP_VS_SO_SET_FLUSH (IP_VS_BASE_CTL+5)
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#define IP_VS_SO_SET_LIST (IP_VS_BASE_CTL+6)
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#define IP_VS_SO_SET_ADDDEST (IP_VS_BASE_CTL+7)
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#define IP_VS_SO_SET_DELDEST (IP_VS_BASE_CTL+8)
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#define IP_VS_SO_SET_EDITDEST (IP_VS_BASE_CTL+9)
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#define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10)
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#define IP_VS_SO_SET_STARTDAEMON (IP_VS_BASE_CTL+11)
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#define IP_VS_SO_SET_STOPDAEMON (IP_VS_BASE_CTL+12)
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#define IP_VS_SO_SET_RESTORE (IP_VS_BASE_CTL+13)
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#define IP_VS_SO_SET_SAVE (IP_VS_BASE_CTL+14)
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#define IP_VS_SO_SET_ZERO (IP_VS_BASE_CTL+15)
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#define IP_VS_SO_SET_MAX IP_VS_SO_SET_ZERO
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#define IP_VS_SO_GET_VERSION IP_VS_BASE_CTL
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#define IP_VS_SO_GET_INFO (IP_VS_BASE_CTL+1)
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#define IP_VS_SO_GET_SERVICES (IP_VS_BASE_CTL+2)
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#define IP_VS_SO_GET_SERVICE (IP_VS_BASE_CTL+3)
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#define IP_VS_SO_GET_DESTS (IP_VS_BASE_CTL+4)
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#define IP_VS_SO_GET_DEST (IP_VS_BASE_CTL+5) /* not used now */
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#define IP_VS_SO_GET_TIMEOUT (IP_VS_BASE_CTL+6)
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#define IP_VS_SO_GET_DAEMON (IP_VS_BASE_CTL+7)
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#define IP_VS_SO_GET_MAX IP_VS_SO_GET_DAEMON
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/*
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* IPVS Connection Flags
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*/
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#define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */
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#define IP_VS_CONN_F_MASQ 0x0000 /* masquerading/NAT */
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#define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */
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#define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */
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#define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */
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#define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */
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#define IP_VS_CONN_F_SYNC 0x0020 /* entry created by sync */
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#define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */
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#define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */
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#define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */
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#define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */
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#define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */
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#define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */
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#define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */
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#define IP_VS_CONN_F_TEMPLATE 0x1000 /* template, not connection */
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#define IP_VS_SCHEDNAME_MAXLEN 16
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#define IP_VS_IFNAME_MAXLEN 16
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/*
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* The struct ip_vs_service_user and struct ip_vs_dest_user are
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* used to set IPVS rules through setsockopt.
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*/
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struct ip_vs_service_user {
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/* virtual service addresses */
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u_int16_t protocol;
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__be32 addr; /* virtual ip address */
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__be16 port;
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u_int32_t fwmark; /* firwall mark of service */
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/* virtual service options */
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char sched_name[IP_VS_SCHEDNAME_MAXLEN];
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unsigned flags; /* virtual service flags */
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unsigned timeout; /* persistent timeout in sec */
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__be32 netmask; /* persistent netmask */
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};
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struct ip_vs_dest_user {
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/* destination server address */
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__be32 addr;
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__be16 port;
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/* real server options */
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unsigned conn_flags; /* connection flags */
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int weight; /* destination weight */
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/* thresholds for active connections */
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u_int32_t u_threshold; /* upper threshold */
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u_int32_t l_threshold; /* lower threshold */
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};
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/*
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* IPVS statistics object (for user space)
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*/
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struct ip_vs_stats_user
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{
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__u32 conns; /* connections scheduled */
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__u32 inpkts; /* incoming packets */
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__u32 outpkts; /* outgoing packets */
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__u64 inbytes; /* incoming bytes */
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__u64 outbytes; /* outgoing bytes */
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__u32 cps; /* current connection rate */
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__u32 inpps; /* current in packet rate */
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__u32 outpps; /* current out packet rate */
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__u32 inbps; /* current in byte rate */
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__u32 outbps; /* current out byte rate */
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};
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/* The argument to IP_VS_SO_GET_INFO */
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struct ip_vs_getinfo {
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/* version number */
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unsigned int version;
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/* size of connection hash table */
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unsigned int size;
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/* number of virtual services */
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unsigned int num_services;
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};
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/* The argument to IP_VS_SO_GET_SERVICE */
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struct ip_vs_service_entry {
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/* which service: user fills in these */
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u_int16_t protocol;
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__be32 addr; /* virtual address */
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__be16 port;
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u_int32_t fwmark; /* firwall mark of service */
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/* service options */
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char sched_name[IP_VS_SCHEDNAME_MAXLEN];
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unsigned flags; /* virtual service flags */
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unsigned timeout; /* persistent timeout */
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__be32 netmask; /* persistent netmask */
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/* number of real servers */
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unsigned int num_dests;
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/* statistics */
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struct ip_vs_stats_user stats;
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};
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struct ip_vs_dest_entry {
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__be32 addr; /* destination address */
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__be16 port;
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unsigned conn_flags; /* connection flags */
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int weight; /* destination weight */
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u_int32_t u_threshold; /* upper threshold */
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u_int32_t l_threshold; /* lower threshold */
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u_int32_t activeconns; /* active connections */
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u_int32_t inactconns; /* inactive connections */
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u_int32_t persistconns; /* persistent connections */
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/* statistics */
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struct ip_vs_stats_user stats;
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};
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/* The argument to IP_VS_SO_GET_DESTS */
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struct ip_vs_get_dests {
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/* which service: user fills in these */
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u_int16_t protocol;
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__be32 addr; /* virtual address */
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__be16 port;
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u_int32_t fwmark; /* firwall mark of service */
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/* number of real servers */
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unsigned int num_dests;
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/* the real servers */
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struct ip_vs_dest_entry entrytable[0];
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};
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/* The argument to IP_VS_SO_GET_SERVICES */
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struct ip_vs_get_services {
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/* number of virtual services */
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unsigned int num_services;
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/* service table */
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struct ip_vs_service_entry entrytable[0];
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};
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/* The argument to IP_VS_SO_GET_TIMEOUT */
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struct ip_vs_timeout_user {
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int tcp_timeout;
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int tcp_fin_timeout;
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int udp_timeout;
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};
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/* The argument to IP_VS_SO_GET_DAEMON */
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struct ip_vs_daemon_user {
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/* sync daemon state (master/backup) */
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int state;
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/* multicast interface name */
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char mcast_ifn[IP_VS_IFNAME_MAXLEN];
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/* SyncID we belong to */
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int syncid;
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};
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/*
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*
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* IPVS Generic Netlink interface definitions
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*
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*/
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/* Generic Netlink family info */
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#define IPVS_GENL_NAME "IPVS"
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#define IPVS_GENL_VERSION 0x1
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struct ip_vs_flags {
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__be32 flags;
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__be32 mask;
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};
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/* Generic Netlink command attributes */
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enum {
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IPVS_CMD_UNSPEC = 0,
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IPVS_CMD_NEW_SERVICE, /* add service */
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IPVS_CMD_SET_SERVICE, /* modify service */
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IPVS_CMD_DEL_SERVICE, /* delete service */
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IPVS_CMD_GET_SERVICE, /* get service info */
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IPVS_CMD_NEW_DEST, /* add destination */
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IPVS_CMD_SET_DEST, /* modify destination */
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IPVS_CMD_DEL_DEST, /* delete destination */
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IPVS_CMD_GET_DEST, /* get destination info */
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IPVS_CMD_NEW_DAEMON, /* start sync daemon */
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IPVS_CMD_DEL_DAEMON, /* stop sync daemon */
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IPVS_CMD_GET_DAEMON, /* get sync daemon status */
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IPVS_CMD_SET_CONFIG, /* set config settings */
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IPVS_CMD_GET_CONFIG, /* get config settings */
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IPVS_CMD_SET_INFO, /* only used in GET_INFO reply */
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IPVS_CMD_GET_INFO, /* get general IPVS info */
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IPVS_CMD_ZERO, /* zero all counters and stats */
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IPVS_CMD_FLUSH, /* flush services and dests */
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__IPVS_CMD_MAX,
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};
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#define IPVS_CMD_MAX (__IPVS_CMD_MAX - 1)
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/* Attributes used in the first level of commands */
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enum {
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IPVS_CMD_ATTR_UNSPEC = 0,
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IPVS_CMD_ATTR_SERVICE, /* nested service attribute */
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IPVS_CMD_ATTR_DEST, /* nested destination attribute */
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IPVS_CMD_ATTR_DAEMON, /* nested sync daemon attribute */
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IPVS_CMD_ATTR_TIMEOUT_TCP, /* TCP connection timeout */
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IPVS_CMD_ATTR_TIMEOUT_TCP_FIN, /* TCP FIN wait timeout */
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IPVS_CMD_ATTR_TIMEOUT_UDP, /* UDP timeout */
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__IPVS_CMD_ATTR_MAX,
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};
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#define IPVS_CMD_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)
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/*
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* Attributes used to describe a service
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*
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* Used inside nested attribute IPVS_CMD_ATTR_SERVICE
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*/
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enum {
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IPVS_SVC_ATTR_UNSPEC = 0,
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IPVS_SVC_ATTR_AF, /* address family */
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IPVS_SVC_ATTR_PROTOCOL, /* virtual service protocol */
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IPVS_SVC_ATTR_ADDR, /* virtual service address */
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IPVS_SVC_ATTR_PORT, /* virtual service port */
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IPVS_SVC_ATTR_FWMARK, /* firewall mark of service */
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IPVS_SVC_ATTR_SCHED_NAME, /* name of scheduler */
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IPVS_SVC_ATTR_FLAGS, /* virtual service flags */
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IPVS_SVC_ATTR_TIMEOUT, /* persistent timeout */
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IPVS_SVC_ATTR_NETMASK, /* persistent netmask */
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IPVS_SVC_ATTR_STATS, /* nested attribute for service stats */
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__IPVS_SVC_ATTR_MAX,
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};
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#define IPVS_SVC_ATTR_MAX (__IPVS_SVC_ATTR_MAX - 1)
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/*
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* Attributes used to describe a destination (real server)
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*
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* Used inside nested attribute IPVS_CMD_ATTR_DEST
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*/
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enum {
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IPVS_DEST_ATTR_UNSPEC = 0,
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IPVS_DEST_ATTR_ADDR, /* real server address */
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IPVS_DEST_ATTR_PORT, /* real server port */
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IPVS_DEST_ATTR_FWD_METHOD, /* forwarding method */
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IPVS_DEST_ATTR_WEIGHT, /* destination weight */
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IPVS_DEST_ATTR_U_THRESH, /* upper threshold */
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IPVS_DEST_ATTR_L_THRESH, /* lower threshold */
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IPVS_DEST_ATTR_ACTIVE_CONNS, /* active connections */
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IPVS_DEST_ATTR_INACT_CONNS, /* inactive connections */
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IPVS_DEST_ATTR_PERSIST_CONNS, /* persistent connections */
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IPVS_DEST_ATTR_STATS, /* nested attribute for dest stats */
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__IPVS_DEST_ATTR_MAX,
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};
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#define IPVS_DEST_ATTR_MAX (__IPVS_DEST_ATTR_MAX - 1)
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/*
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* Attributes describing a sync daemon
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*
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* Used inside nested attribute IPVS_CMD_ATTR_DAEMON
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*/
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enum {
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IPVS_DAEMON_ATTR_UNSPEC = 0,
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IPVS_DAEMON_ATTR_STATE, /* sync daemon state (master/backup) */
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IPVS_DAEMON_ATTR_MCAST_IFN, /* multicast interface name */
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IPVS_DAEMON_ATTR_SYNC_ID, /* SyncID we belong to */
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__IPVS_DAEMON_ATTR_MAX,
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};
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#define IPVS_DAEMON_ATTR_MAX (__IPVS_DAEMON_ATTR_MAX - 1)
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/*
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* Attributes used to describe service or destination entry statistics
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*
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* Used inside nested attributes IPVS_SVC_ATTR_STATS and IPVS_DEST_ATTR_STATS
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*/
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enum {
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IPVS_STATS_ATTR_UNSPEC = 0,
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IPVS_STATS_ATTR_CONNS, /* connections scheduled */
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IPVS_STATS_ATTR_INPKTS, /* incoming packets */
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IPVS_STATS_ATTR_OUTPKTS, /* outgoing packets */
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IPVS_STATS_ATTR_INBYTES, /* incoming bytes */
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IPVS_STATS_ATTR_OUTBYTES, /* outgoing bytes */
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IPVS_STATS_ATTR_CPS, /* current connection rate */
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IPVS_STATS_ATTR_INPPS, /* current in packet rate */
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IPVS_STATS_ATTR_OUTPPS, /* current out packet rate */
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IPVS_STATS_ATTR_INBPS, /* current in byte rate */
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IPVS_STATS_ATTR_OUTBPS, /* current out byte rate */
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__IPVS_STATS_ATTR_MAX,
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};
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#define IPVS_STATS_ATTR_MAX (__IPVS_STATS_ATTR_MAX - 1)
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/* Attributes used in response to IPVS_CMD_GET_INFO command */
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enum {
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IPVS_INFO_ATTR_UNSPEC = 0,
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IPVS_INFO_ATTR_VERSION, /* IPVS version number */
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IPVS_INFO_ATTR_CONN_TAB_SIZE, /* size of connection hash table */
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__IPVS_INFO_ATTR_MAX,
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};
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#define IPVS_INFO_ATTR_MAX (__IPVS_INFO_ATTR_MAX - 1)
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#endif /* _IP_VS_H */
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