Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl
[linux-2.6.git] / net / ipv4 / fib_lookup.h
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, int prefixlen);
26 extern void fib_release_info(struct fib_info *);
27 extern struct fib_info *fib_create_info(struct fib_config *cfg);
28 extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
29 extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
30                          u32 tb_id, u8 type, u8 scope, __be32 dst,
31                          int dst_len, u8 tos, struct fib_info *fi,
32                          unsigned int);
33 extern void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
34                       int dst_len, u32 tb_id, struct nl_info *info,
35                       unsigned int nlm_flags);
36 extern struct fib_alias *fib_find_alias(struct list_head *fah,
37                                         u8 tos, u32 prio);
38 extern int fib_detect_death(struct fib_info *fi, int order,
39                             struct fib_info **last_resort,
40                             int *last_idx, int dflt);
41
42 static inline void fib_result_assign(struct fib_result *res,
43                                      struct fib_info *fi)
44 {
45         if (res->fi != NULL)
46                 fib_info_put(res->fi);
47         res->fi = fi;
48         if (fi != NULL)
49                 atomic_inc(&fi->fib_clntref);
50 }
51
52 #endif /* _FIB_LOOKUP_H */