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
11struct 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 */
29static 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 */
36void fib_release_info(struct fib_info *);
37struct fib_info *fib_create_info(struct fib_config *cfg,
38 struct netlink_ext_ack *extack);
39int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi,
40 struct netlink_ext_ack *extack);
41bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
42int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
43 const struct fib_rt_info *fri, unsigned int flags);
44void 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);
46size_t fib_nlmsg_size(struct fib_info *fi);
47
48static 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, nhsel: 0);
54}
55
56struct fib_prop {
57 int error;
58 u8 scope;
59};
60
61extern const struct fib_prop fib_props[RTN_MAX + 1];
62
63#endif /* _FIB_LOOKUP_H */
64