[linux.git] / include / net / dn_fib.h

#ifndef _NET_DN_FIB_H
#define _NET_DN_FIB_H

#include <linux/netlink.h>

extern const struct nla_policy rtm_dn_policy[];

struct dn_fib_res {
	struct fib_rule *r;
	struct dn_fib_info *fi;
	unsigned char prefixlen;
	unsigned char nh_sel;
	unsigned char type;
	unsigned char scope;
};

struct dn_fib_nh {
	struct net_device	*nh_dev;
	unsigned int		nh_flags;
	unsigned char		nh_scope;
	int			nh_weight;
	int			nh_power;
	int			nh_oif;
	__le16			nh_gw;
};

struct dn_fib_info {
	struct dn_fib_info	*fib_next;
	struct dn_fib_info	*fib_prev;
	int 			fib_treeref;
	atomic_t		fib_clntref;
	int			fib_dead;
	unsigned int		fib_flags;
	int			fib_protocol;
	__le16			fib_prefsrc;
	__u32			fib_priority;
	__u32			fib_metrics[RTAX_MAX];
	int			fib_nhs;
	int			fib_power;
	struct dn_fib_nh	fib_nh[0];
#define dn_fib_dev		fib_nh[0].nh_dev
};


#define DN_FIB_RES_RESET(res)	((res).nh_sel = 0)
#define DN_FIB_RES_NH(res)	((res).fi->fib_nh[(res).nh_sel])

#define DN_FIB_RES_PREFSRC(res)	((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res))
#define DN_FIB_RES_GW(res)	(DN_FIB_RES_NH(res).nh_gw)
#define DN_FIB_RES_DEV(res)	(DN_FIB_RES_NH(res).nh_dev)
#define DN_FIB_RES_OIF(res)	(DN_FIB_RES_NH(res).nh_oif)

typedef struct {
	__le16	datum;
} dn_fib_key_t;

typedef struct {
	__le16	datum;
} dn_fib_hash_t;

typedef struct {
	__u16	datum;
} dn_fib_idx_t;

struct dn_fib_node {
	struct dn_fib_node *fn_next;
	struct dn_fib_info *fn_info;
#define DN_FIB_INFO(f) ((f)->fn_info)
	dn_fib_key_t	fn_key;
	u8		fn_type;
	u8		fn_scope;
	u8		fn_state;
};


struct dn_fib_table {
	struct hlist_node hlist;
	u32 n;

	int (*insert)(struct dn_fib_table *t, struct rtmsg *r, 
			struct nlattr *attrs[], struct nlmsghdr *n,
			struct netlink_skb_parms *req);
	int (*delete)(struct dn_fib_table *t, struct rtmsg *r,
			struct nlattr *attrs[], struct nlmsghdr *n,
			struct netlink_skb_parms *req);
	int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld,
			struct dn_fib_res *res);
	int (*flush)(struct dn_fib_table *t);
	int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb);

	unsigned char data[0];
};

#ifdef CONFIG_DECNET_ROUTER
/*
 * dn_fib.c
 */
extern void dn_fib_init(void);
extern void dn_fib_cleanup(void);

extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd, 
			unsigned long arg);
extern struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, 
				struct nlattr *attrs[],
				const struct nlmsghdr *nlh, int *errp);
extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi, 
			const struct flowidn *fld,
			struct dn_fib_res *res);
extern void dn_fib_release_info(struct dn_fib_info *fi);
extern void dn_fib_flush(void);
extern void dn_fib_select_multipath(const struct flowidn *fld,
					struct dn_fib_res *res);

/*
 * dn_tables.c
 */
extern struct dn_fib_table *dn_fib_get_table(u32 n, int creat);
extern struct dn_fib_table *dn_fib_empty_table(void);
extern void dn_fib_table_init(void);
extern void dn_fib_table_cleanup(void);

/*
 * dn_rules.c
 */
extern void dn_fib_rules_init(void);
extern void dn_fib_rules_cleanup(void);
extern unsigned int dnet_addr_type(__le16 addr);
extern int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res);

extern int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb);

extern void dn_fib_free_info(struct dn_fib_info *fi);

static inline void dn_fib_info_put(struct dn_fib_info *fi)
{
	if (atomic_dec_and_test(&fi->fib_clntref))
		dn_fib_free_info(fi);
}

static inline void dn_fib_res_put(struct dn_fib_res *res)
{
	if (res->fi)
		dn_fib_info_put(res->fi);
	if (res->r)
		fib_rule_put(res->r);
}

#else /* Endnode */

#define dn_fib_init()  do { } while(0)
#define dn_fib_cleanup() do { } while(0)

#define dn_fib_lookup(fl, res) (-ESRCH)
#define dn_fib_info_put(fi) do { } while(0)
#define dn_fib_select_multipath(fl, res) do { } while(0)
#define dn_fib_rules_policy(saddr,res,flags) (0)
#define dn_fib_res_put(res) do { } while(0)

#endif /* CONFIG_DECNET_ROUTER */

static inline __le16 dnet_make_mask(int n)
{
	if (n)
		return cpu_to_le16(~((1 << (16 - n)) - 1));
	return cpu_to_le16(0);
}

#endif /* _NET_DN_FIB_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _NET_DN_FIB_H
	2	#define _NET_DN_FIB_H
	3
58d7d8f9 TG	4	#include <linux/netlink.h>
	5
	6	extern const struct nla_policy rtm_dn_policy[];
1da177e4 LT	7
1da177e4 LT	8	struct dn_fib_res {
a8731cbf	9	struct fib_rule *r;
1da177e4 LT	10	struct dn_fib_info *fi;
	11	unsigned char prefixlen;
	12	unsigned char nh_sel;
	13	unsigned char type;
	14	unsigned char scope;
	15	};
	16
	17	struct dn_fib_nh {
	18	struct net_device *nh_dev;
95c96174	19	unsigned int nh_flags;
1da177e4 LT	20	unsigned char nh_scope;
	21	int nh_weight;
	22	int nh_power;
	23	int nh_oif;
c4ea94ab	24	__le16 nh_gw;
1da177e4 LT	25	};
	26
	27	struct dn_fib_info {
	28	struct dn_fib_info *fib_next;
	29	struct dn_fib_info *fib_prev;
	30	int fib_treeref;
	31	atomic_t fib_clntref;
	32	int fib_dead;
95c96174	33	unsigned int fib_flags;
1da177e4	34	int fib_protocol;
c4ea94ab	35	__le16 fib_prefsrc;
1da177e4 LT	36	__u32 fib_priority;
1da177e4 LT	37	__u32 fib_metrics[RTAX_MAX];
1da177e4 LT	38	int fib_nhs;
	39	int fib_power;
	40	struct dn_fib_nh fib_nh[0];
	41	#define dn_fib_dev fib_nh[0].nh_dev
	42	};
	43
	44
	45	#define DN_FIB_RES_RESET(res) ((res).nh_sel = 0)
	46	#define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel])
	47
	48	#define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res))
	49	#define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw)
	50	#define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev)
	51	#define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif)
	52
	53	typedef struct {
c4ea94ab	54	__le16 datum;
1da177e4 LT	55	} dn_fib_key_t;
	56
	57	typedef struct {
c4ea94ab	58	__le16 datum;
1da177e4 LT	59	} dn_fib_hash_t;
	60
	61	typedef struct {
c4ea94ab	62	__u16 datum;
1da177e4 LT	63	} dn_fib_idx_t;
	64
	65	struct dn_fib_node {
	66	struct dn_fib_node *fn_next;
	67	struct dn_fib_info *fn_info;
	68	#define DN_FIB_INFO(f) ((f)->fn_info)
	69	dn_fib_key_t fn_key;
	70	u8 fn_type;
	71	u8 fn_scope;
	72	u8 fn_state;
	73	};
	74
	75
	76	struct dn_fib_table {
abcab268	77	struct hlist_node hlist;
2dfe55b4	78	u32 n;
1da177e4 LT	79
1da177e4 LT	80	int (insert)(struct dn_fib_table t, struct rtmsg *r,
58d7d8f9	81	struct nlattr attrs[], struct nlmsghdr n,
1da177e4 LT	82	struct netlink_skb_parms *req);
1da177e4 LT	83	int (delete)(struct dn_fib_table t, struct rtmsg *r,
58d7d8f9	84	struct nlattr attrs[], struct nlmsghdr n,
1da177e4	85	struct netlink_skb_parms *req);
bef55aeb	86	int (lookup)(struct dn_fib_table t, const struct flowidn *fld,
1da177e4 LT	87	struct dn_fib_res *res);
	88	int (flush)(struct dn_fib_table t);
	89	int (dump)(struct dn_fib_table t, struct sk_buff skb, struct netlink_callback cb);
	90
	91	unsigned char data[0];
	92	};
	93
	94	#ifdef CONFIG_DECNET_ROUTER
	95	/*
	96	* dn_fib.c
	97	*/
	98	extern void dn_fib_init(void);
	99	extern void dn_fib_cleanup(void);
	100
	101	extern int dn_fib_ioctl(struct socket *sock, unsigned int cmd,
	102	unsigned long arg);
	103	extern struct dn_fib_info dn_fib_create_info(const struct rtmsg r,
58d7d8f9	104	struct nlattr *attrs[],
1da177e4 LT	105	const struct nlmsghdr nlh, int errp);
1da177e4 LT	106	extern int dn_fib_semantic_match(int type, struct dn_fib_info *fi,
bef55aeb	107	const struct flowidn *fld,
1da177e4 LT	108	struct dn_fib_res *res);
1da177e4 LT	109	extern void dn_fib_release_info(struct dn_fib_info *fi);
1da177e4	110	extern void dn_fib_flush(void);
bef55aeb	111	extern void dn_fib_select_multipath(const struct flowidn *fld,
1da177e4	112	struct dn_fib_res *res);
1da177e4 LT	113
	114	/*
	115	* dn_tables.c
	116	*/
2dfe55b4	117	extern struct dn_fib_table *dn_fib_get_table(u32 n, int creat);
1da177e4 LT	118	extern struct dn_fib_table *dn_fib_empty_table(void);
	119	extern void dn_fib_table_init(void);
	120	extern void dn_fib_table_cleanup(void);
	121
	122	/*
	123	* dn_rules.c
	124	*/
	125	extern void dn_fib_rules_init(void);
	126	extern void dn_fib_rules_cleanup(void);
95c96174	127	extern unsigned int dnet_addr_type(__le16 addr);
bef55aeb	128	extern int dn_fib_lookup(struct flowidn fld, struct dn_fib_res res);
1da177e4	129
1da177e4 LT	130	extern int dn_fib_dump(struct sk_buff skb, struct netlink_callback cb);
1da177e4 LT	131
1da177e4 LT	132	extern void dn_fib_free_info(struct dn_fib_info *fi);
	133
	134	static inline void dn_fib_info_put(struct dn_fib_info *fi)
	135	{
	136	if (atomic_dec_and_test(&fi->fib_clntref))
	137	dn_fib_free_info(fi);
	138	}
	139
	140	static inline void dn_fib_res_put(struct dn_fib_res *res)
	141	{
	142	if (res->fi)
	143	dn_fib_info_put(res->fi);
	144	if (res->r)
a8731cbf	145	fib_rule_put(res->r);
1da177e4 LT	146	}
1da177e4 LT	147
1da177e4 LT	148	#else /* Endnode */
	149
	150	#define dn_fib_init() do { } while(0)
	151	#define dn_fib_cleanup() do { } while(0)
	152
	153	#define dn_fib_lookup(fl, res) (-ESRCH)
	154	#define dn_fib_info_put(fi) do { } while(0)
	155	#define dn_fib_select_multipath(fl, res) do { } while(0)
	156	#define dn_fib_rules_policy(saddr,res,flags) (0)
	157	#define dn_fib_res_put(res) do { } while(0)
	158
	159	#endif /* CONFIG_DECNET_ROUTER */
	160
c4ea94ab	161	static inline __le16 dnet_make_mask(int n)
1da177e4	162	{
c4106aa8 HH	163	if (n)
	164	return cpu_to_le16(~((1 << (16 - n)) - 1));
	165	return cpu_to_le16(0);
1da177e4 LT	166	}
	167
	168	#endif /* _NET_DN_FIB_H */