LXR linux/include/net/seg6

   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);
  52extern int seg6_hmac_init(void);
  53extern void seg6_hmac_exit(void);
  54extern int seg6_hmac_net_init(struct net *net);
  55extern void seg6_hmac_net_exit(struct net *net);
  56
  57#endif
  58