1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _FIB_LOOKUP_H
3*4882a593Smuzhiyun #define _FIB_LOOKUP_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/types.h>
6*4882a593Smuzhiyun #include <linux/list.h>
7*4882a593Smuzhiyun #include <net/ip_fib.h>
8*4882a593Smuzhiyun #include <net/nexthop.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun struct fib_alias {
11*4882a593Smuzhiyun struct hlist_node fa_list;
12*4882a593Smuzhiyun struct fib_info *fa_info;
13*4882a593Smuzhiyun u8 fa_tos;
14*4882a593Smuzhiyun u8 fa_type;
15*4882a593Smuzhiyun u8 fa_state;
16*4882a593Smuzhiyun u8 fa_slen;
17*4882a593Smuzhiyun u32 tb_id;
18*4882a593Smuzhiyun s16 fa_default;
19*4882a593Smuzhiyun u8 offload:1,
20*4882a593Smuzhiyun trap:1,
21*4882a593Smuzhiyun unused:6;
22*4882a593Smuzhiyun struct rcu_head rcu;
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #define FA_S_ACCESSED 0x01
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /* Dont write on fa_state unless needed, to keep it shared on all cpus */
fib_alias_accessed(struct fib_alias * fa)28*4882a593Smuzhiyun static inline void fib_alias_accessed(struct fib_alias *fa)
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun if (!(fa->fa_state & FA_S_ACCESSED))
31*4882a593Smuzhiyun fa->fa_state |= FA_S_ACCESSED;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun /* Exported by fib_semantics.c */
35*4882a593Smuzhiyun void fib_release_info(struct fib_info *);
36*4882a593Smuzhiyun struct fib_info *fib_create_info(struct fib_config *cfg,
37*4882a593Smuzhiyun struct netlink_ext_ack *extack);
38*4882a593Smuzhiyun int fib_nh_match(struct net *net, struct fib_config *cfg, struct fib_info *fi,
39*4882a593Smuzhiyun struct netlink_ext_ack *extack);
40*4882a593Smuzhiyun bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi);
41*4882a593Smuzhiyun int fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
42*4882a593Smuzhiyun struct fib_rt_info *fri, unsigned int flags);
43*4882a593Smuzhiyun void rtmsg_fib(int event, __be32 key, struct fib_alias *fa, int dst_len,
44*4882a593Smuzhiyun u32 tb_id, const struct nl_info *info, unsigned int nlm_flags);
45*4882a593Smuzhiyun
fib_result_assign(struct fib_result * res,struct fib_info * fi)46*4882a593Smuzhiyun static inline void fib_result_assign(struct fib_result *res,
47*4882a593Smuzhiyun struct fib_info *fi)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun /* we used to play games with refcounts, but we now use RCU */
50*4882a593Smuzhiyun res->fi = fi;
51*4882a593Smuzhiyun res->nhc = fib_info_nhc(fi, 0);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun struct fib_prop {
55*4882a593Smuzhiyun int error;
56*4882a593Smuzhiyun u8 scope;
57*4882a593Smuzhiyun };
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun extern const struct fib_prop fib_props[RTN_MAX + 1];
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun #endif /* _FIB_LOOKUP_H */
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