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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include "sd-id128.h"
#include "macro.h"
#include "sparse-endian.h"
#include "unaligned.h"
typedef enum DUIDType {
DUID_TYPE_LLT = 1,
DUID_TYPE_EN = 2,
DUID_TYPE_LL = 3,
DUID_TYPE_UUID = 4,
_DUID_TYPE_MAX,
_DUID_TYPE_INVALID = -1,
} DUIDType;
/* RFC 3315 section 9.1:
* A DUID can be no more than 128 octets long (not including the type code).
*/
#define MAX_DUID_LEN 128
/* https://tools.ietf.org/html/rfc3315#section-9.1 */
struct duid {
be16_t type;
union {
struct {
/* DUID_TYPE_LLT */
uint16_t htype;
uint32_t time;
uint8_t haddr[0];
} _packed_ llt;
struct {
/* DUID_TYPE_EN */
uint32_t pen;
uint8_t id[8];
} _packed_ en;
struct {
/* DUID_TYPE_LL */
int16_t htype;
uint8_t haddr[0];
} _packed_ ll;
struct {
/* DUID_TYPE_UUID */
sd_id128_t uuid;
} _packed_ uuid;
struct {
uint8_t data[MAX_DUID_LEN];
} _packed_ raw;
};
} _packed_;
int dhcp_validate_duid_len(uint16_t duid_type, size_t duid_len);
int dhcp_identifier_set_duid_en(struct duid *duid, size_t *len);
int dhcp_identifier_set_iaid(int ifindex, uint8_t *mac, size_t mac_len, void *_id);
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