NFC: add NCI_UNREG flag to eliminate the race
[linux-2.6-microblaze.git] / include / net / ioam6.h
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
17 struct 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
28 struct 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[0];
39 };
40
41 struct ioam6_pernet_data {
42         struct mutex lock;
43         struct rhashtable namespaces;
44         struct rhashtable schemas;
45 };
46
47 static 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
56 struct ioam6_namespace *ioam6_namespace(struct net *net, __be16 id);
57 void ioam6_fill_trace_data(struct sk_buff *skb,
58                            struct ioam6_namespace *ns,
59                            struct ioam6_trace_hdr *trace,
60                            bool is_input);
61
62 int ioam6_init(void);
63 void ioam6_exit(void);
64
65 int ioam6_iptunnel_init(void);
66 void ioam6_iptunnel_exit(void);
67
68 #endif /* _NET_IOAM6_H */