xref: /openbmc/linux/net/ipv4/fib_lookup.h (revision 92a2c6b2)
1 #ifndef _FIB_LOOKUP_H
2 #define _FIB_LOOKUP_H
3 
4 #include <linux/types.h>
5 #include <linux/list.h>
6 #include <net/ip_fib.h>
7 
8 struct fib_alias {
9 	struct list_head	fa_list;
10 	struct fib_info		*fa_info;
11 	u8			fa_tos;
12 	u8			fa_type;
13 	u8			fa_state;
14 	struct rcu_head		rcu;
15 };
16 
17 #define FA_S_ACCESSED	0x01
18 
19 /* Dont write on fa_state unless needed, to keep it shared on all cpus */
20 static inline void fib_alias_accessed(struct fib_alias *fa)
21 {
22 	if (!(fa->fa_state & FA_S_ACCESSED))
23 		fa->fa_state |= FA_S_ACCESSED;
24 }
25 
26 /* Exported by fib_semantics.c */
27 void fib_release_info(struct fib_info *);
28 struct fib_info *fib_create_info(struct fib_config *cfg);
29 int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
30 int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id,
31 		  u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi,
32 		  unsigned int);
33 void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
34 	       u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
35 
36 static inline void fib_result_assign(struct fib_result *res,
37 				     struct fib_info *fi)
38 {
39 	/* we used to play games with refcounts, but we now use RCU */
40 	res->fi = fi;
41 }
42 
43 struct fib_prop {
44 	int	error;
45 	u8	scope;
46 };
47 
48 extern const struct fib_prop fib_props[RTN_MAX + 1];
49 
50 #endif /* _FIB_LOOKUP_H */
51