xref: /openbmc/linux/net/ipv4/fib_lookup.h (revision 22246614)
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_scope;
14 	u8			fa_state;
15 #ifdef CONFIG_IP_FIB_TRIE
16 	struct rcu_head		rcu;
17 #endif
18 };
19 
20 #define FA_S_ACCESSED	0x01
21 
22 /* Exported by fib_semantics.c */
23 extern int fib_semantic_match(struct list_head *head,
24 			      const struct flowi *flp,
25 			      struct fib_result *res, __be32 zone, __be32 mask,
26 				int prefixlen);
27 extern void fib_release_info(struct fib_info *);
28 extern struct fib_info *fib_create_info(struct fib_config *cfg);
29 extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
30 extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
31 			 u32 tb_id, u8 type, u8 scope, __be32 dst,
32 			 int dst_len, u8 tos, struct fib_info *fi,
33 			 unsigned int);
34 extern void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
35 		      int dst_len, u32 tb_id, struct nl_info *info,
36 		      unsigned int nlm_flags);
37 extern struct fib_alias *fib_find_alias(struct list_head *fah,
38 					u8 tos, u32 prio);
39 extern int fib_detect_death(struct fib_info *fi, int order,
40 			    struct fib_info **last_resort,
41 			    int *last_idx, int dflt);
42 
43 static inline void fib_result_assign(struct fib_result *res,
44 				     struct fib_info *fi)
45 {
46 	if (res->fi != NULL)
47 		fib_info_put(res->fi);
48 	res->fi = fi;
49 	if (fi != NULL)
50 		atomic_inc(&fi->fib_clntref);
51 }
52 
53 #endif /* _FIB_LOOKUP_H */
54