[mirror_ubuntu-jammy-kernel.git] / net / ipv4 / fib_lookup.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FIB_LOOKUP_H
#define _FIB_LOOKUP_H

#include <linux/types.h>
#include <linux/list.h>
#include <net/ip_fib.h>
#include <net/nexthop.h>

struct fib_alias {
	struct hlist_node	fa_list;
	struct fib_info		*fa_info;
	u8			fa_tos;
	u8			fa_type;
	u8			fa_state;
	u8			fa_slen;
	u32			tb_id;
	s16			fa_default;
	u8			offload:1,
				trap:1,
				unused:6;
	struct rcu_head		rcu;
};

#define FA_S_ACCESSED	0x01

/* Dont write on fa_state unless needed, to keep it shared on all cpus */
static inline void fib_alias_accessed(struct fib_alias *fa)
{
	if (!(fa->fa_state & FA_S_ACCESSED))
		fa->fa_state |= FA_S_ACCESSED;
}

/* Exported by fib_semantics.c */
void fib_release_info(struct fib_info *);
struct fib_info *fib_create_info(struct fib_config *cfg,
				 struct netlink_ext_ack *extack);
int fib_nh_match(struct fib_config *cfg, struct fib_info *fi,
		 struct netlink_ext_ack *extack);
bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
		  struct fib_rt_info *fri, unsigned int flags);
void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
	       u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);

static inline void fib_result_assign(struct fib_result *res,
				     struct fib_info *fi)
{
	/* we used to play games with refcounts, but we now use RCU */
	res->fi = fi;
	res->nhc = fib_info_nhc(fi, 0);
}

struct fib_prop {
	int	error;
	u8	scope;
};

extern const struct fib_prop fib_props[RTN_MAX + 1];

#endif /* _FIB_LOOKUP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _FIB_LOOKUP_H
	3	#define _FIB_LOOKUP_H
	4
	5	#include <linux/types.h>
	6	#include <linux/list.h>
	7	#include <net/ip_fib.h>
5481d73f	8	#include <net/nexthop.h>
1da177e4 LT	9
1da177e4 LT	10	struct fib_alias {
56315f9e	11	struct hlist_node fa_list;
1da177e4 LT	12	struct fib_info *fa_info;
	13	u8 fa_tos;
	14	u8 fa_type;
1da177e4	15	u8 fa_state;
9b6ebad5	16	u8 fa_slen;
0ddcf43d	17	u32 tb_id;
2392debc	18	s16 fa_default;
90b93f1b IS	19	u8 offload:1,
	20	trap:1,
	21	unused:6;
a6501e08	22	struct rcu_head rcu;
1da177e4 LT	23	};
	24
	25	#define FA_S_ACCESSED 0x01
	26
9b0c290e ED	27	/* Dont write on fa_state unless needed, to keep it shared on all cpus */
	28	static inline void fib_alias_accessed(struct fib_alias *fa)
	29	{
	30	if (!(fa->fa_state & FA_S_ACCESSED))
	31	fa->fa_state \|= FA_S_ACCESSED;
	32	}
	33
1da177e4	34	/* Exported by fib_semantics.c */
7e58487b	35	void fib_release_info(struct fib_info *);
6d8422a1 DA	36	struct fib_info fib_create_info(struct fib_config cfg,
6d8422a1 DA	37	struct netlink_ext_ack *extack);
9ae28727 DA	38	int fib_nh_match(struct fib_config cfg, struct fib_info fi,
9ae28727 DA	39	struct netlink_ext_ack *extack);
5f9ae3d9	40	bool fib_metrics_match(struct fib_config cfg, struct fib_info fi);
1e301fd0 IS	41	int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
1e301fd0 IS	42	struct fib_rt_info *fri, unsigned int flags);
7e58487b JP	43	void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
7e58487b JP	44	u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
1da177e4	45
a2bbe682 DL	46	static inline void fib_result_assign(struct fib_result *res,
	47	struct fib_info *fi)
	48	{
1f1b9c99	49	/* we used to play games with refcounts, but we now use RCU */
a2bbe682	50	res->fi = fi;
eba618ab	51	res->nhc = fib_info_nhc(fi, 0);
a2bbe682 DL	52	}
a2bbe682 DL	53
3be0686b DM	54	struct fib_prop {
	55	int error;
	56	u8 scope;
	57	};
	58
	59	extern const struct fib_prop fib_props[RTN_MAX + 1];
	60
1da177e4	61	#endif /* _FIB_LOOKUP_H */