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| 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 | |
| 18 | struct 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 | |
| 29 | struct 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 | |
| 42 | struct ioam6_pernet_data { |
| 43 | struct mutex lock; |
| 44 | struct rhashtable namespaces; |
| 45 | struct rhashtable schemas; |
| 46 | }; |
| 47 | |
| 48 | static 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 | |
| 57 | struct ioam6_namespace *ioam6_namespace(struct net *net, __be16 id); |
| 58 | void ioam6_fill_trace_data(struct sk_buff *skb, |
| 59 | struct ioam6_namespace *ns, |
| 60 | struct ioam6_trace_hdr *trace, |
| 61 | bool is_input); |
| 62 | |
| 63 | int ioam6_init(void); |
| 64 | void ioam6_exit(void); |
| 65 | |
| 66 | int ioam6_iptunnel_init(void); |
| 67 | void ioam6_iptunnel_exit(void); |
| 68 | |
| 69 | void 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 |
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