ipvs: Move userspace definitions to include/linux/ip_vs.h

Current versions of ipvsadm include "/usr/src/linux/include/net/ip_vs.h"
directly. This file also contains kernel-only definitions. Normally, public
definitions should live in include/linux, so this patch moves the
definitions shared with userspace to a new file, "include/linux/ip_vs.h".

This also removes the unused NFC_IPVS_PROPERTY bitmask, which was once
used to point into skb->nfcache.

To make old ipvsadms still compile with this, the old header file includes
the new one.

Thanks to Dave Miller and Horms for noting/adding the missing Kbuild entry
for the new header file.

Signed-off-by: Julius Volz <juliusv@google.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 246 insertions, 0 deletions

diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index 4c4142c5aa6e..a26f565e8189 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -97,6 +97,7 @@ header-y += ioctl.h
 header-y += ip6_tunnel.h
 header-y += ipmi_msgdefs.h
 header-y += ipsec.h
+header-y += ip_vs.h
 header-y += ipx.h
 header-y += irda.h
 header-y += iso_fs.h
diff --git a/include/linux/ip_vs.h b/include/linux/ip_vs.h
new file mode 100644
index 000000000000..ec6eb49af2d8
--- /dev/null
+++ b/include/linux/ip_vs.h
@@ -0,0 +1,245 @@
+/*
+ *      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 */