linux/net/ipv4/fib_lookup.h
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   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
   8struct 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 */
  20static 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 */
  27extern void fib_release_info(struct fib_info *);
  28extern struct fib_info *fib_create_info(struct fib_config *cfg);
  29extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
  30extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
  31                         u32 tb_id, u8 type, __be32 dst,
  32                         int dst_len, u8 tos, struct fib_info *fi,
  33                         unsigned int);
  34extern 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);
  37extern struct fib_alias *fib_find_alias(struct list_head *fah,
  38                                        u8 tos, u32 prio);
  39extern int fib_detect_death(struct fib_info *fi, int order,
  40                            struct fib_info **last_resort,
  41                            int *last_idx, int dflt);
  42
  43static inline void fib_result_assign(struct fib_result *res,
  44                                     struct fib_info *fi)
  45{
  46        /* we used to play games with refcounts, but we now use RCU */
  47        res->fi = fi;
  48}
  49
  50struct fib_prop {
  51        int     error;
  52        u8      scope;
  53};
  54
  55extern const struct fib_prop fib_props[RTN_MAX + 1];
  56
  57#endif /* _FIB_LOOKUP_H */
  58
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