LXR linux/net/ipv4/fib

   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_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 */
  21static 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 */
  28extern int fib_semantic_match(struct list_head *head,
  29                              const struct flowi *flp,
  30                              struct fib_result *res, int prefixlen, int fib_flags);
  31extern void fib_release_info(struct fib_info *);
  32extern struct fib_info *fib_create_info(struct fib_config *cfg);
  33extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
  34extern int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
  35                         u32 tb_id, u8 type, u8 scope, __be32 dst,
  36                         int dst_len, u8 tos, struct fib_info *fi,
  37                         unsigned int);
  38extern void rtmsg_fib(int event, __be32 key, struct fib_alias *fa,
  39                      int dst_len, u32 tb_id, struct nl_info *info,
  40                      unsigned int nlm_flags);
  41extern struct fib_alias *fib_find_alias(struct list_head *fah,
  42                                        u8 tos, u32 prio);
  43extern int fib_detect_death(struct fib_info *fi, int order,
  44                            struct fib_info **last_resort,
  45                            int *last_idx, int dflt);
  46
  47static inline void fib_result_assign(struct fib_result *res,
  48                                     struct fib_info *fi)
  49{
  50        /* we used to play games with refcounts, but we now use RCU */
  51        res->fi = fi;
  52}
  53
  54#endif /* _FIB_LOOKUP_H */
  55