LXR linux/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
  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[0];
  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
  61int ioam6_init(void);
  62void ioam6_exit(void);
  63
  64int ioam6_iptunnel_init(void);
  65void ioam6_iptunnel_exit(void);
  66
  67#endif /* _NET_IOAM6_H */
  68