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 hlist_node       fa_list;
  10         struct fib_info         *fa_info;
  11         u8                      fa_tos;
  12         u8                      fa_type;
  13         u8                      fa_state;
  14         u8                      fa_slen;
  15         u32                     tb_id;
  16         s16                     fa_default;
  17         struct rcu_head         rcu;
  18 };
  19
  20 #define FA_S_ACCESSED   0x01
  21
  22 /* Dont write on fa_state unless needed, to keep it shared on all cpus */
  23 static inline void fib_alias_accessed(struct fib_alias *fa)
  24 {
  25         if (!(fa->fa_state & FA_S_ACCESSED))
  26                 fa->fa_state |= FA_S_ACCESSED;
  27 }
  28
  29 /* Exported by fib_semantics.c */
  30 void fib_release_info(struct fib_info *);
  31 struct fib_info *fib_create_info(struct fib_config *cfg);
  32 int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
  33 int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id,
  34                   u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi,
  35                   unsigned int);
  36 void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
  37                u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
  38
  39 static inline void fib_result_assign(struct fib_result *res,
  40                                      struct fib_info *fi)
  41 {
  42         /* we used to play games with refcounts, but we now use RCU */
  43         res->fi = fi;
  44 }
  45
  46 struct fib_prop {
  47         int     error;
  48         u8      scope;
  49 };
  50
  51 extern const struct fib_prop fib_props[RTN_MAX + 1];
  52
  53 #endif /* _FIB_LOOKUP_H */