Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  SR-IPv6 implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Author:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *  David Lebrun <david.lebrun@uclouvain.be>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifndef _NET_SEG6_HMAC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define _NET_SEG6_HMAC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <net/flow.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <net/ip6_fib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/ipv6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net/seg6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/seg6_hmac.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/rhashtable-types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define SEG6_HMAC_MAX_DIGESTSIZE	160
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define SEG6_HMAC_RING_SIZE		256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct seg6_hmac_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct rhash_head node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	u32 hmackeyid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	char secret[SEG6_HMAC_SECRET_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	u8 slen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	u8 alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct seg6_hmac_algo {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	u8 alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	char name[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct crypto_shash * __percpu *tfms;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	struct shash_desc * __percpu *shashs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) extern int seg6_hmac_compute(struct seg6_hmac_info *hinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			     struct ipv6_sr_hdr *hdr, struct in6_addr *saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 			     u8 *output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) extern struct seg6_hmac_info *seg6_hmac_info_lookup(struct net *net, u32 key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) extern int seg6_hmac_info_add(struct net *net, u32 key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			      struct seg6_hmac_info *hinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) extern int seg6_hmac_info_del(struct net *net, u32 key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) extern int seg6_push_hmac(struct net *net, struct in6_addr *saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 			  struct ipv6_sr_hdr *srh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) extern bool seg6_hmac_validate_skb(struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern int seg6_hmac_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) extern void seg6_hmac_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) extern int seg6_hmac_net_init(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) extern void seg6_hmac_net_exit(struct net *net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #endif