LXR linux/net/ipv4/fib

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _FIB_LOOKUP_H
   3#define _FIB_LOOKUP_H
   4
   5#include <linux/types.h>
   6#include <linux/list.h>
   7#include <net/ip_fib.h>
   8#include <net/nexthop.h>
   9
  10struct fib_alias {
  11        struct hlist_node       fa_list;
  12        struct fib_info         *fa_info;
  13        u8                      fa_tos;
  14        u8                      fa_type;
  15        u8                      fa_state;
  16        u8                      fa_slen;
  17        u32                     tb_id;
  18        s16                     fa_default;
  19        struct rcu_head         rcu;
  20};
  21
  22#define FA_S_ACCESSED   0x01
  23
  24/* Dont write on fa_state unless needed, to keep it shared on all cpus */
  25static inline void fib_alias_accessed(struct fib_alias *fa)
  26{
  27        if (!(fa->fa_state & FA_S_ACCESSED))
  28                fa->fa_state |= FA_S_ACCESSED;
  29}
  30
  31/* Exported by fib_semantics.c */
  32void fib_release_info(struct fib_info *);
  33struct fib_info *fib_create_info(struct fib_config *cfg,
  34                                 struct netlink_ext_ack *extack);
  35int fib_nh_match(struct fib_config *cfg, struct fib_info *fi,
  36                 struct netlink_ext_ack *extack);
  37bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
  38int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event, u32 tb_id,
  39                  u8 type, __be32 dst, int dst_len, u8 tos, struct fib_info *fi,
  40                  unsigned int);
  41void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
  42               u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
  43
  44static 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        res->nhc = fib_info_nhc(fi, 0);
  50}
  51
  52struct fib_prop {
  53        int     error;
  54        u8      scope;
  55};
  56
  57extern const struct fib_prop fib_props[RTN_MAX + 1];
  58
  59#endif /* _FIB_LOOKUP_H */
  60