[deliverable/linux.git] / include / net / flow.h

/*
 *
 *	Generic internet FLOW.
 *
 */

#ifndef _NET_FLOW_H
#define _NET_FLOW_H

#include <linux/in6.h>
#include <asm/atomic.h>

struct flowi_common {
	int	flowic_oif;
	int	flowic_iif;
	__u32	flowic_mark;
	__u8	flowic_tos;
	__u8	flowic_scope;
	__u8	flowic_proto;
	__u8	flowic_flags;
#define FLOWI_FLAG_ANYSRC		0x01
#define FLOWI_FLAG_PRECOW_METRICS	0x02
#define FLOWI_FLAG_CAN_SLEEP		0x04
	__u32	flowic_secid;
};

union flowi_uli {
	struct {
		__be16	sport;
		__be16	dport;
	} ports;

	struct {
		__u8	type;
		__u8	code;
	} icmpt;

	struct {
		__le16	sport;
		__le16	dport;
	} dnports;

	__be32		spi;
	__be32		gre_key;

	struct {
		__u8	type;
	} mht;
};

struct flowi4 {
	struct flowi_common	__fl_common;
	__be32			daddr;
	__be32			saddr;
	union flowi_uli		uli;
};

struct flowi6 {
	struct flowi_common	__fl_common;
	struct in6_addr		daddr;
	struct in6_addr		saddr;
	__be32			flowlabel;
	union flowi_uli		uli;
};

struct flowidn {
	struct flowi_common	__fl_common;
	__le16			daddr;
	__le16			saddr;
	union flowi_uli		uli;
};

struct flowi {
	union {
		struct flowi_common	__fl_common;
		struct flowi4		ip4;
		struct flowi6		ip6;
		struct flowidn		dn;
	} u;
#define flowi_oif	u.__fl_common.flowic_oif
#define flowi_iif	u.__fl_common.flowic_iif
#define flowi_mark	u.__fl_common.flowic_mark
#define flowi_tos	u.__fl_common.flowic_tos
#define flowi_scope	u.__fl_common.flowic_scope
#define flowi_proto	u.__fl_common.flowic_proto
#define flowi_flags	u.__fl_common.flowic_flags
#define flowi_secid	u.__fl_common.flowic_secid
#define fl4_tos		flowi_tos
#define fl4_scope	flowi_scope
#define fld_scope	flowi_scope

#define fld_dst		u.dn.daddr
#define fld_src		u.dn.saddr
#define fl6_dst		u.ip6.daddr
#define fl6_src		u.ip6.saddr
#define fl6_flowlabel	u.ip6.flowlabel
#define fl4_dst		u.ip4.daddr
#define fl4_src		u.ip4.saddr
#define fl4_sport	u.ip4.uli.ports.sport
#define fl4_dport	u.ip4.uli.ports.dport
#define fl4_icmp_type	u.ip4.uli.icmpt.type
#define fl4_icmp_code	u.ip4.uli.icmpt.code
#define fl4_ipsec_spi	u.ip4.uli.spi
#define fl4_mh_type	u.ip4.uli.mht.type
#define fl4_gre_key	u.ip4.uli.gre_key
#define fl6_sport	u.ip6.uli.ports.sport
#define fl6_dport	u.ip6.uli.ports.dport
#define fl6_icmp_type	u.ip6.uli.icmpt.type
#define fl6_icmp_code	u.ip6.uli.icmpt.code
#define fl6_ipsec_spi	u.ip6.uli.spi
#define fl6_mh_type	u.ip6.uli.mht.type
#define fl6_gre_key	u.ip6.uli.gre_key
} __attribute__((__aligned__(BITS_PER_LONG/8)));

#define FLOW_DIR_IN	0
#define FLOW_DIR_OUT	1
#define FLOW_DIR_FWD	2

struct net;
struct sock;
struct flow_cache_ops;

struct flow_cache_object {
	const struct flow_cache_ops *ops;
};

struct flow_cache_ops {
	struct flow_cache_object *(*get)(struct flow_cache_object *);
	int (*check)(struct flow_cache_object *);
	void (*delete)(struct flow_cache_object *);
};

typedef struct flow_cache_object *(*flow_resolve_t)(
		struct net *net, const struct flowi *key, u16 family,
		u8 dir, struct flow_cache_object *oldobj, void *ctx);

extern struct flow_cache_object *flow_cache_lookup(
		struct net *net, const struct flowi *key, u16 family,
		u8 dir, flow_resolve_t resolver, void *ctx);

extern void flow_cache_flush(void);
extern atomic_t flow_cache_genid;

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* Generic internet FLOW.
	4	*
	5	*/
	6
	7	#ifndef _NET_FLOW_H
	8	#define _NET_FLOW_H
	9
	10	#include <linux/in6.h>
	11	#include <asm/atomic.h>
	12
806566cc DM	13	struct flowi_common {
	14	int flowic_oif;
	15	int flowic_iif;
	16	__u32 flowic_mark;
	17	__u8 flowic_tos;
	18	__u8 flowic_scope;
	19	__u8 flowic_proto;
	20	__u8 flowic_flags;
fbef0a40 DM	21	#define FLOWI_FLAG_ANYSRC 0x01
	22	#define FLOWI_FLAG_PRECOW_METRICS 0x02
	23	#define FLOWI_FLAG_CAN_SLEEP 0x04
806566cc DM	24	__u32 flowic_secid;
	25	};
	26
08704bcb DM	27	union flowi_uli {
	28	struct {
	29	__be16 sport;
	30	__be16 dport;
	31	} ports;
	32
	33	struct {
	34	__u8 type;
	35	__u8 code;
	36	} icmpt;
	37
	38	struct {
	39	__le16 sport;
	40	__le16 dport;
	41	} dnports;
	42
	43	__be32 spi;
	44	__be32 gre_key;
	45
	46	struct {
	47	__u8 type;
	48	} mht;
	49	};
	50
56bb8059 DM	51	struct flowi4 {
	52	struct flowi_common __fl_common;
	53	__be32 daddr;
	54	__be32 saddr;
	55	union flowi_uli uli;
	56	};
	57
	58	struct flowi6 {
806566cc	59	struct flowi_common __fl_common;
56bb8059 DM	60	struct in6_addr daddr;
	61	struct in6_addr saddr;
	62	__be32 flowlabel;
	63	union flowi_uli uli;
	64	};
1da177e4	65
56bb8059 DM	66	struct flowidn {
	67	struct flowi_common __fl_common;
	68	__le16 daddr;
	69	__le16 saddr;
	70	union flowi_uli uli;
	71	};
	72
	73	struct flowi {
1da177e4	74	union {
56bb8059 DM	75	struct flowi_common __fl_common;
	76	struct flowi4 ip4;
	77	struct flowi6 ip6;
	78	struct flowidn dn;
	79	} u;
	80	#define flowi_oif u.__fl_common.flowic_oif
	81	#define flowi_iif u.__fl_common.flowic_iif
	82	#define flowi_mark u.__fl_common.flowic_mark
	83	#define flowi_tos u.__fl_common.flowic_tos
	84	#define flowi_scope u.__fl_common.flowic_scope
	85	#define flowi_proto u.__fl_common.flowic_proto
	86	#define flowi_flags u.__fl_common.flowic_flags
	87	#define flowi_secid u.__fl_common.flowic_secid
1d28f42c DM	88	#define fl4_tos flowi_tos
1d28f42c DM	89	#define fl4_scope flowi_scope
56bb8059 DM	90	#define fld_scope flowi_scope
	91
	92	#define fld_dst u.dn.daddr
	93	#define fld_src u.dn.saddr
	94	#define fl6_dst u.ip6.daddr
	95	#define fl6_src u.ip6.saddr
	96	#define fl6_flowlabel u.ip6.flowlabel
	97	#define fl4_dst u.ip4.daddr
	98	#define fl4_src u.ip4.saddr
	99	#define fl4_sport u.ip4.uli.ports.sport
	100	#define fl4_dport u.ip4.uli.ports.dport
	101	#define fl4_icmp_type u.ip4.uli.icmpt.type
	102	#define fl4_icmp_code u.ip4.uli.icmpt.code
	103	#define fl4_ipsec_spi u.ip4.uli.spi
	104	#define fl4_mh_type u.ip4.uli.mht.type
	105	#define fl4_gre_key u.ip4.uli.gre_key
	106	#define fl6_sport u.ip6.uli.ports.sport
	107	#define fl6_dport u.ip6.uli.ports.dport
	108	#define fl6_icmp_type u.ip6.uli.icmpt.type
	109	#define fl6_icmp_code u.ip6.uli.icmpt.code
	110	#define fl6_ipsec_spi u.ip6.uli.spi
	111	#define fl6_mh_type u.ip6.uli.mht.type
	112	#define fl6_gre_key u.ip6.uli.gre_key
1da177e4 LT	113	} __attribute__((__aligned__(BITS_PER_LONG/8)));
	114
	115	#define FLOW_DIR_IN 0
	116	#define FLOW_DIR_OUT 1
	117	#define FLOW_DIR_FWD 2
	118
52479b62	119	struct net;
df71837d	120	struct sock;
fe1a5f03 TT	121	struct flow_cache_ops;
	122
	123	struct flow_cache_object {
	124	const struct flow_cache_ops *ops;
	125	};
	126
	127	struct flow_cache_ops {
	128	struct flow_cache_object (get)(struct flow_cache_object *);
	129	int (check)(struct flow_cache_object );
	130	void (delete)(struct flow_cache_object );
	131	};
	132
	133	typedef struct flow_cache_object (flow_resolve_t)(
dee9f4bc	134	struct net net, const struct flowi key, u16 family,
fe1a5f03 TT	135	u8 dir, struct flow_cache_object oldobj, void ctx);
	136
	137	extern struct flow_cache_object *flow_cache_lookup(
dee9f4bc	138	struct net net, const struct flowi key, u16 family,
fe1a5f03	139	u8 dir, flow_resolve_t resolver, void *ctx);
1da177e4	140
1da177e4 LT	141	extern void flow_cache_flush(void);
	142	extern atomic_t flow_cache_genid;
	143
	144	#endif