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 4c4142c..a26f565 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 0000000..ec6eb49
--- /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 */