1/*
2 * SR-IPv6 implementation
3 *
4 * Author:
5 * David Lebrun <david.lebrun@uclouvain.be>
6 *
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13
14#ifndef _NET_SEG6_HMAC_H
15#define _NET_SEG6_HMAC_H
16
17#include <net/flow.h>
18#include <net/ip6_fib.h>
19#include <net/sock.h>
20#include <linux/ip.h>
21#include <linux/ipv6.h>
22#include <linux/route.h>
23#include <net/seg6.h>
24#include <linux/seg6_hmac.h>
25#include <linux/rhashtable-types.h>
26
27#define SEG6_HMAC_MAX_DIGESTSIZE 160
28#define SEG6_HMAC_RING_SIZE 256
29
30struct seg6_hmac_info {
31 struct rhash_head node;
32 struct rcu_head rcu;
33
34 u32 hmackeyid;
35 char secret[SEG6_HMAC_SECRET_LEN];
36 u8 slen;
37 u8 alg_id;
38};
39
40struct seg6_hmac_algo {
41 u8 alg_id;
42 char name[64];
43 struct crypto_shash * __percpu *tfms;
44 struct shash_desc * __percpu *shashs;
45};
46
47extern int seg6_hmac_compute(struct seg6_hmac_info *hinfo,
48 struct ipv6_sr_hdr *hdr, struct in6_addr *saddr,
49 u8 *output);
50extern struct seg6_hmac_info *seg6_hmac_info_lookup(struct net *net, u32 key);
51extern int seg6_hmac_info_add(struct net *net, u32 key,
52 struct seg6_hmac_info *hinfo);
53extern int seg6_hmac_info_del(struct net *net, u32 key);
54extern int seg6_push_hmac(struct net *net, struct in6_addr *saddr,
55 struct ipv6_sr_hdr *srh);
56extern bool seg6_hmac_validate_skb(struct sk_buff *skb);
57extern int seg6_hmac_init(void);
58extern void seg6_hmac_exit(void);
59extern int seg6_hmac_net_init(struct net *net);
60extern void seg6_hmac_net_exit(struct net *net);
61
62#endif
63