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.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

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 *  SR-IPv6 implementation
 4 *
 5 *  Author:
 6 *  David Lebrun <david.lebrun@uclouvain.be>
 
 
 
 
 
 
 7 */
 8
 9#ifndef _NET_SEG6_HMAC_H
10#define _NET_SEG6_HMAC_H
11
12#include <net/flow.h>
13#include <net/ip6_fib.h>
14#include <net/sock.h>
15#include <linux/ip.h>
16#include <linux/ipv6.h>
17#include <linux/route.h>
18#include <net/seg6.h>
19#include <linux/seg6_hmac.h>
20#include <linux/rhashtable-types.h>
21
22#define SEG6_HMAC_MAX_DIGESTSIZE	160
23#define SEG6_HMAC_RING_SIZE		256
24
25struct seg6_hmac_info {
26	struct rhash_head node;
27	struct rcu_head rcu;
28
29	u32 hmackeyid;
30	char secret[SEG6_HMAC_SECRET_LEN];
31	u8 slen;
32	u8 alg_id;
33};
34
35struct seg6_hmac_algo {
36	u8 alg_id;
37	char name[64];
38	struct crypto_shash * __percpu *tfms;
39	struct shash_desc * __percpu *shashs;
40};
41
42extern int seg6_hmac_compute(struct seg6_hmac_info *hinfo,
43			     struct ipv6_sr_hdr *hdr, struct in6_addr *saddr,
44			     u8 *output);
45extern struct seg6_hmac_info *seg6_hmac_info_lookup(struct net *net, u32 key);
46extern int seg6_hmac_info_add(struct net *net, u32 key,
47			      struct seg6_hmac_info *hinfo);
48extern int seg6_hmac_info_del(struct net *net, u32 key);
49extern int seg6_push_hmac(struct net *net, struct in6_addr *saddr,
50			  struct ipv6_sr_hdr *srh);
51extern bool seg6_hmac_validate_skb(struct sk_buff *skb);
52#ifdef CONFIG_IPV6_SEG6_HMAC
53extern int seg6_hmac_init(void);
54extern void seg6_hmac_exit(void);
55extern int seg6_hmac_net_init(struct net *net);
56extern void seg6_hmac_net_exit(struct net *net);
57#else
58static inline int seg6_hmac_init(void) { return 0; }
59static inline void seg6_hmac_exit(void) {}
60static inline int seg6_hmac_net_init(struct net *net) { return 0; }
61static inline void seg6_hmac_net_exit(struct net *net) {}
62#endif
63
64#endif