Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/include/linux/seg6_hmac.h

 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_SEG6_HMAC_H
#define _LINUX_SEG6_HMAC_H

#include <linux/types.h>
#include <linux/seg6.h>

#define SEG6_HMAC_SECRET_LEN	64
#define SEG6_HMAC_FIELD_LEN	32

struct sr6_tlv_hmac {
	struct sr6_tlv tlvhdr;
	__u16 reserved;
	__be32 hmackeyid;
	__u8 hmac[SEG6_HMAC_FIELD_LEN];
};

enum {
	SEG6_HMAC_ALGO_SHA1 = 1,
	SEG6_HMAC_ALGO_SHA256 = 2,
};

#endif