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net/ipv4/fib_lookup.h 1.5 KB
81f7e3824   Eric Lee   Initial Release, ...
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  /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef _FIB_LOOKUP_H
  #define _FIB_LOOKUP_H
  
  #include <linux/types.h>
  #include <linux/list.h>
  #include <net/ip_fib.h>
  
  struct fib_alias {
  	struct hlist_node	fa_list;
  	struct fib_info		*fa_info;
  	u8			fa_tos;
  	u8			fa_type;
  	u8			fa_state;
  	u8			fa_slen;
  	u32			tb_id;
  	s16			fa_default;
  	struct rcu_head		rcu;
  };
  
  #define FA_S_ACCESSED	0x01
  
  /* Dont write on fa_state unless needed, to keep it shared on all cpus */
  static inline void fib_alias_accessed(struct fib_alias *fa)
  {
  	if (!(fa->fa_state & FA_S_ACCESSED))
  		fa->fa_state |= FA_S_ACCESSED;
  }
  
  /* Exported by fib_semantics.c */
  void fib_release_info(struct fib_info *);
  struct fib_info *fib_create_info(struct fib_config *cfg,
  				 struct netlink_ext_ack *extack);
  int fib_nh_match(struct fib_config *cfg, struct fib_info *fi,
  		 struct netlink_ext_ack *extack);
  bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
  int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id,
  		  u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi,
  		  unsigned int);
  void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
  	       u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
  
  static inline void fib_result_assign(struct fib_result *res,
  				     struct fib_info *fi)
  {
  	/* we used to play games with refcounts, but we now use RCU */
  	res->fi = fi;
  }
  
  struct fib_prop {
  	int	error;
  	u8	scope;
  };
  
  extern const struct fib_prop fib_props[RTN_MAX + 1];
  
  #endif /* _FIB_LOOKUP_H */