[deliverable/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
 */
void dn_fib_init(void);
void dn_fib_cleanup(void);

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

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

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

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

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
	1	#ifndef _NET_DN_FIB_H
	2	#define _NET_DN_FIB_H
	3
	4	#include <linux/netlink.h>
	5
	6	extern const struct nla_policy rtm_dn_policy[];
	7
	8	struct dn_fib_res {
	9	struct fib_rule *r;
	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;
	19	unsigned int nh_flags;
	20	unsigned char nh_scope;
	21	int nh_weight;
	22	int nh_power;
	23	int nh_oif;
	24	__le16 nh_gw;
	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;
	33	unsigned int fib_flags;
	34	int fib_protocol;
	35	__le16 fib_prefsrc;
	36	__u32 fib_priority;
	37	__u32 fib_metrics[RTAX_MAX];
	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 {
	54	__le16 datum;
	55	} dn_fib_key_t;
	56
	57	typedef struct {
	58	__le16 datum;
	59	} dn_fib_hash_t;
	60
	61	typedef struct {
	62	__u16 datum;
	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 {
	77	struct hlist_node hlist;
	78	u32 n;
	79
	80	int (insert)(struct dn_fib_table t, struct rtmsg *r,
	81	struct nlattr attrs[], struct nlmsghdr n,
	82	struct netlink_skb_parms *req);
	83	int (delete)(struct dn_fib_table t, struct rtmsg *r,
	84	struct nlattr attrs[], struct nlmsghdr n,
	85	struct netlink_skb_parms *req);
	86	int (lookup)(struct dn_fib_table t, const struct flowidn *fld,
	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	void dn_fib_init(void);
	99	void dn_fib_cleanup(void);
	100
	101	int dn_fib_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
	102	struct dn_fib_info dn_fib_create_info(const struct rtmsg r,
	103	struct nlattr *attrs[],
	104	const struct nlmsghdr nlh, int errp);
	105	int dn_fib_semantic_match(int type, struct dn_fib_info *fi,
	106	const struct flowidn fld, struct dn_fib_res res);
	107	void dn_fib_release_info(struct dn_fib_info *fi);
	108	void dn_fib_flush(void);
	109	void dn_fib_select_multipath(const struct flowidn fld, struct dn_fib_res res);
	110
	111	/*
	112	* dn_tables.c
	113	*/
	114	struct dn_fib_table *dn_fib_get_table(u32 n, int creat);
	115	struct dn_fib_table *dn_fib_empty_table(void);
	116	void dn_fib_table_init(void);
	117	void dn_fib_table_cleanup(void);
	118
	119	/*
	120	* dn_rules.c
	121	*/
	122	void dn_fib_rules_init(void);
	123	void dn_fib_rules_cleanup(void);
	124	unsigned int dnet_addr_type(__le16 addr);
	125	int dn_fib_lookup(struct flowidn fld, struct dn_fib_res res);
	126
	127	int dn_fib_dump(struct sk_buff skb, struct netlink_callback cb);
	128
	129	void dn_fib_free_info(struct dn_fib_info *fi);
	130
	131	static inline void dn_fib_info_put(struct dn_fib_info *fi)
	132	{
	133	if (atomic_dec_and_test(&fi->fib_clntref))
	134	dn_fib_free_info(fi);
	135	}
	136
	137	static inline void dn_fib_res_put(struct dn_fib_res *res)
	138	{
	139	if (res->fi)
	140	dn_fib_info_put(res->fi);
	141	if (res->r)
	142	fib_rule_put(res->r);
	143	}
	144
	145	#else /* Endnode */
	146
	147	#define dn_fib_init() do { } while(0)
	148	#define dn_fib_cleanup() do { } while(0)
	149
	150	#define dn_fib_lookup(fl, res) (-ESRCH)
	151	#define dn_fib_info_put(fi) do { } while(0)
	152	#define dn_fib_select_multipath(fl, res) do { } while(0)
	153	#define dn_fib_rules_policy(saddr,res,flags) (0)
	154	#define dn_fib_res_put(res) do { } while(0)
	155
	156	#endif /* CONFIG_DECNET_ROUTER */
	157
	158	static inline __le16 dnet_make_mask(int n)
	159	{
	160	if (n)
	161	return cpu_to_le16(~((1 << (16 - n)) - 1));
	162	return cpu_to_le16(0);
	163	}
	164
	165	#endif /* _NET_DN_FIB_H */