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
10 struct 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 u8 offload:1,
20 trap:1,
21 unused:6;
22 struct rcu_head rcu;
23 };
24
25 #define FA_S_ACCESSED 0x01
26
27 /* Dont write on fa_state unless needed, to keep it shared on all cpus */
fib_alias_accessed(struct fib_alias * fa)28 static inline void fib_alias_accessed(struct fib_alias *fa)
29 {
30 if (!(fa->fa_state & FA_S_ACCESSED))
31 fa->fa_state |= FA_S_ACCESSED;
32 }
33
34 /* Exported by fib_semantics.c */
35 void fib_release_info(struct fib_info *);
36 struct fib_info *fib_create_info(struct fib_config *cfg,
37 struct netlink_ext_ack *extack);
38 int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi,
39 struct netlink_ext_ack *extack);
40 bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
41 int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
42 struct fib_rt_info *fri, unsigned int flags);
43 void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
44 u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
45
fib_result_assign(struct fib_result * res,struct fib_info * fi)46 static inline void fib_result_assign(struct fib_result *res,
47 struct fib_info *fi)
48 {
49 /* we used to play games with refcounts, but we now use RCU */
50 res->fi = fi;
51 res->nhc = fib_info_nhc(fi, 0);
52 }
53
54 struct fib_prop {
55 int error;
56 u8 scope;
57 };
58
59 extern const struct fib_prop fib_props[RTN_MAX + 1];
60
61 #endif /* _FIB_LOOKUP_H */
62
