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