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/inet_dscp.h>
8 #include <net/ip_fib.h>
9 #include <net/nexthop.h>
10
11 struct fib_alias {
12 struct hlist_node fa_list;
13 struct fib_info *fa_info;
14 dscp_t fa_dscp;
15 u8 fa_type;
16 u8 fa_state;
17 u8 fa_slen;
18 u32 tb_id;
19 s16 fa_default;
20 u8 offload;
21 u8 trap;
22 u8 offload_failed;
23 struct rcu_head rcu;
24 };
25
26 #define FA_S_ACCESSED 0x01
27
28 /* Don't write on fa_state unless needed, to keep it shared on all cpus */
29 static inline void fib_alias_accessed(struct fib_alias *fa)
30 {
31 if (!(fa->fa_state & FA_S_ACCESSED))
32 fa->fa_state |= FA_S_ACCESSED;
33 }
34
35 /* Exported by fib_semantics.c */
36 void fib_release_info(struct fib_info *);
37 struct fib_info *fib_create_info(struct fib_config *cfg,
38 struct netlink_ext_ack *extack);
39 int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi,
40 struct netlink_ext_ack *extack);
41 bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
42 int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
43 const struct fib_rt_info *fri, unsigned int flags);
44 void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
45 u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
46 size_t fib_nlmsg_size(struct fib_info *fi);
47
48 static inline void fib_result_assign(struct fib_result *res,
49 struct fib_info *fi)
50 {
51 /* we used to play games with refcounts, but we now use RCU */
52 res->fi = fi;
53 res->nhc = fib_info_nhc(fi, 0);
54 }
55
56 struct fib_prop {
57 int error;
58 u8 scope;
59 };
60
61 extern const struct fib_prop fib_props[RTN_MAX + 1];
62
63 #endif /* _FIB_LOOKUP_H */
64
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