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