1 files changed, 434 insertions, 0 deletions

diff --git a/include/uapi/linux/ip_vs.h b/include/uapi/linux/ip_vs.h
new file mode 100644
index 000000000000..8a2d438dc499
--- /dev/null
+++ b/include/uapi/linux/ip_vs.h
@@ -0,0 +1,434 @@
+/*
+ *      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 */
+
+/*
+ *      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 {
+        __be32 flags;
+        __be32 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 */