1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * IPv6 IOAM implementation
4 *
5 * Author:
6 * Justin Iurman <justin.iurman@uliege.be>
7 */
8
9#ifndef _NET_IOAM6_H
10#define _NET_IOAM6_H
11
12#include <linux/net.h>
13#include <linux/ipv6.h>
14#include <linux/ioam6.h>
15#include <linux/ioam6_genl.h>
16#include <linux/rhashtable-types.h>
17
18struct ioam6_namespace {
19 struct rhash_head head;
20 struct rcu_head rcu;
21
22 struct ioam6_schema __rcu *schema;
23
24 __be16 id;
25 __be32 data;
26 __be64 data_wide;
27};
28
29struct ioam6_schema {
30 struct rhash_head head;
31 struct rcu_head rcu;
32
33 struct ioam6_namespace __rcu *ns;
34
35 u32 id;
36 int len;
37 __be32 hdr;
38
39 u8 data[];
40};
41
42struct ioam6_pernet_data {
43 struct mutex lock;
44 struct rhashtable namespaces;
45 struct rhashtable schemas;
46};
47
48static inline struct ioam6_pernet_data *ioam6_pernet(struct net *net)
49{
50#if IS_ENABLED(CONFIG_IPV6)
51 return net->ipv6.ioam6_data;
52#else
53 return NULL;
54#endif
55}
56
57struct ioam6_namespace *ioam6_namespace(struct net *net, __be16 id);
58void ioam6_fill_trace_data(struct sk_buff *skb,
59 struct ioam6_namespace *ns,
60 struct ioam6_trace_hdr *trace,
61 bool is_input);
62
63int ioam6_init(void);
64void ioam6_exit(void);
65
66int ioam6_iptunnel_init(void);
67void ioam6_iptunnel_exit(void);
68
69void ioam6_event(enum ioam6_event_type type, struct net *net, gfp_t gfp,
70 void *opt, unsigned int opt_len);
71
72#endif /* _NET_IOAM6_H */
73