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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* SR-IPv6 implementation
*
* Author:
* David Lebrun <david.lebrun@uclouvain.be>
*/
#ifndef _NET_SEG6_HMAC_H
#define _NET_SEG6_HMAC_H
#include <net/flow.h>
#include <net/ip6_fib.h>
#include <net/sock.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/route.h>
#include <net/seg6.h>
#include <linux/seg6_hmac.h>
#include <linux/rhashtable-types.h>
#define SEG6_HMAC_MAX_DIGESTSIZE 160
#define SEG6_HMAC_RING_SIZE 256
struct seg6_hmac_info {
struct rhash_head node;
struct rcu_head rcu;
u32 hmackeyid;
char secret[SEG6_HMAC_SECRET_LEN];
u8 slen;
u8 alg_id;
};
struct seg6_hmac_algo {
u8 alg_id;
char name[64];
struct crypto_shash * __percpu *tfms;
struct shash_desc * __percpu *shashs;
};
extern int seg6_hmac_compute(struct seg6_hmac_info *hinfo,
struct ipv6_sr_hdr *hdr, struct in6_addr *saddr,
u8 *output);
extern struct seg6_hmac_info *seg6_hmac_info_lookup(struct net *net, u32 key);
extern int seg6_hmac_info_add(struct net *net, u32 key,
struct seg6_hmac_info *hinfo);
extern int seg6_hmac_info_del(struct net *net, u32 key);
extern int seg6_push_hmac(struct net *net, struct in6_addr *saddr,
struct ipv6_sr_hdr *srh);
extern bool seg6_hmac_validate_skb(struct sk_buff *skb);
extern int seg6_hmac_init(void);
extern void seg6_hmac_exit(void);
extern int seg6_hmac_net_init(struct net *net);
extern void seg6_hmac_net_exit(struct net *net);
#endif