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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 
  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_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 */
 20 static 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 */
 27 extern void fib_release_info(struct fib_info *);
 28 extern struct fib_info *fib_create_info(struct fib_config *cfg);
 29 extern int fib_nh_match(struct fib_config *cfg, struct fib_info *fi);
 30 extern 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);
 34 extern 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);
 37 extern struct fib_alias *fib_find_alias(struct list_head *fah,
 38                                         u8 tos, u32 prio);
 39 extern int fib_detect_death(struct fib_info *fi, int order,
 40                             struct fib_info **last_resort,
 41                             int *last_idx, int dflt);
 42 
 43 static 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 
 50 struct fib_prop {
 51         int     error;
 52         u8      scope;
 53 };
 54 
 55 extern const struct fib_prop fib_props[RTN_MAX + 1];
 56 
 57 #endif /* _FIB_LOOKUP_H */
 58 

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