Re: [PATCH] IPVS: Move userspace definitions to include/linux/ip_vs.h

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On Thu, Jul 24, 2008 at 12:14:49PM +0200, Julius Volz wrote:
> 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".
> 
> 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@xxxxxxxxxx>

Acked-by: Simon Horman <horms@xxxxxxxxxxxx>

> ---
>  include/linux/Kbuild  |    1 +
>  include/linux/ip_vs.h |  248 ++++++++++++++++++++++++++++++++++++++++++++++++
>  include/net/ip_vs.h   |  253 ++-----------------------------------------------
>  3 files changed, 257 insertions(+), 245 deletions(-)
>  create mode 100644 include/linux/ip_vs.h
> 
> diff --git a/include/linux/Kbuild b/include/linux/Kbuild
> index 71d70d1..3273039 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..2d4eb68
> --- /dev/null
> +++ b/include/linux/ip_vs.h
> @@ -0,0 +1,248 @@
> +/*
> + *      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 */
> +
> +/* Move it to better place one day, for now keep it unique */
> +#define NFC_IPVS_PROPERTY	0x10000
> +
> +#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 */
> diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
> index 9a51eba..cbb59eb 100644
> --- a/include/net/ip_vs.h
> +++ b/include/net/ip_vs.h
> @@ -3,254 +3,17 @@
>   *      data structure and functionality definitions
>   */
>  
> -#ifndef _IP_VS_H
> -#define _IP_VS_H
> -
> -#include <asm/types.h>		/* For __uXX types */
> -#include <linux/types.h>	/* For __beXX types in userland */
> -
> -#include <linux/sysctl.h>	/* For ctl_path */
> -
> -#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 */
> -
> -/* Move it to better place one day, for now keep it unique */
> -#define NFC_IPVS_PROPERTY	0x10000
> -
> -#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;
> -};
> +#ifndef _NET_IP_VS_H
> +#define _NET_IP_VS_H
>  
> +#include <linux/ip_vs.h>                /* definitions shared with userland */
>  
> +/* old ipvsadm versions still include this file directly */
>  #ifdef __KERNEL__
>  
> +#include <asm/types.h>                  /* for __uXX types */
> +
> +#include <linux/sysctl.h>               /* for ctl_path */
>  #include <linux/list.h>                 /* for struct list_head */
>  #include <linux/spinlock.h>             /* for struct rwlock_t */
>  #include <asm/atomic.h>                 /* for struct atomic_t */
> @@ -981,4 +744,4 @@ static inline __wsum ip_vs_check_diff2(__be16 old, __be16 new, __wsum oldsum)
>  
>  #endif /* __KERNEL__ */
>  
> -#endif	/* _IP_VS_H */
> +#endif	/* _NET_IP_VS_H */
> -- 
> 1.5.4.5

-- 
Horms

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