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/rhashtable-types.h>
16
17struct ioam6_namespace {
18	struct rhash_head head;
19	struct rcu_head rcu;
20
21	struct ioam6_schema __rcu *schema;
22
23	__be16 id;
24	__be32 data;
25	__be64 data_wide;
26};
27
28struct ioam6_schema {
29	struct rhash_head head;
30	struct rcu_head rcu;
31
32	struct ioam6_namespace __rcu *ns;
33
34	u32 id;
35	int len;
36	__be32 hdr;
37
38	u8 data[];
39};
40
41struct ioam6_pernet_data {
42	struct mutex lock;
43	struct rhashtable namespaces;
44	struct rhashtable schemas;
45};
46
47static inline struct ioam6_pernet_data *ioam6_pernet(struct net *net)
48{
49#if IS_ENABLED(CONFIG_IPV6)
50	return net->ipv6.ioam6_data;
51#else
52	return NULL;
53#endif
54}
55
56struct ioam6_namespace *ioam6_namespace(struct net *net, __be16 id);
57void ioam6_fill_trace_data(struct sk_buff *skb,
58			   struct ioam6_namespace *ns,
59			   struct ioam6_trace_hdr *trace,
60			   bool is_input);
61
62int ioam6_init(void);
63void ioam6_exit(void);
64
65int ioam6_iptunnel_init(void);
66void ioam6_iptunnel_exit(void);
67
68#endif /* _NET_IOAM6_H */