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         struct rcu_head         rcu;
  16 };
  17
  18 #define FA_S_ACCESSED   0x01
  19
  20 /* Dont write on fa_state unless needed, to keep it shared on all cpus */
  21 static inline void fib_alias_accessed(struct fib_alias *fa)
  22 {
  23         if (!(fa->fa_state & FA_S_ACCESSED))
  24                 fa->fa_state |= FA_S_ACCESSED;
  25 }
  26
  27 /* Exported by fib_semantics.c */
  28 extern void fib_release_info(struct fib_info *);
  29 extern struct fib_info *fib_create_info(struct fib_config *cfg);
  30 extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
  31 extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
  32                          u32 tb_id, u8 type, u8 scope, __be32 dst,
  33                          int dst_len, u8 tos, struct fib_info *fi,
  34                          unsigned int);
  35 extern void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
  36                       int dst_len, u32 tb_id, struct nl_info *info,
  37                       unsigned int nlm_flags);
  38 extern struct fib_alias *fib_find_alias(struct list_head *fah,
  39                                         u8 tos, u32 prio);
  40 extern int fib_detect_death(struct fib_info *fi, int order,
  41                             struct fib_info **last_resort,
  42                             int *last_idx, int dflt);
  43
  44 static inline void fib_result_assign(struct fib_result *res,
  45                                      struct fib_info *fi)
  46 {
  47         /* we used to play games with refcounts, but we now use RCU */
  48         res->fi = fi;
  49 }
  50
  51 struct fib_prop {
  52         int     error;
  53         u8      scope;
  54 };
  55
  56 extern const struct fib_prop fib_props[RTN_MAX + 1];
  57
  58 #endif /* _FIB_LOOKUP_H */