63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "sd-id128.h"
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#include "macro.h"
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#include "sparse-endian.h"
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#include "time-util.h"
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#include "unaligned.h"
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#define SYSTEMD_PEN 43793
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typedef enum DUIDType {
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DUID_TYPE_LLT = 1,
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DUID_TYPE_EN = 2,
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DUID_TYPE_LL = 3,
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DUID_TYPE_UUID = 4,
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_DUID_TYPE_MAX,
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_DUID_TYPE_INVALID = -1,
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} DUIDType;
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/* RFC 3315 section 9.1:
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* A DUID can be no more than 128 octets long (not including the type code).
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*/
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#define MAX_DUID_LEN 128
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/* https://tools.ietf.org/html/rfc3315#section-9.1 */
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struct duid {
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be16_t type;
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union {
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struct {
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/* DUID_TYPE_LLT */
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be16_t htype;
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be32_t time;
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uint8_t haddr[0];
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} _packed_ llt;
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struct {
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/* DUID_TYPE_EN */
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be32_t pen;
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uint8_t id[8];
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} _packed_ en;
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struct {
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/* DUID_TYPE_LL */
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be16_t htype;
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uint8_t haddr[0];
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} _packed_ ll;
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struct {
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/* DUID_TYPE_UUID */
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sd_id128_t uuid;
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} _packed_ uuid;
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struct {
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uint8_t data[MAX_DUID_LEN];
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} _packed_ raw;
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};
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} _packed_;
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int dhcp_validate_duid_len(uint16_t duid_type, size_t duid_len, bool strict);
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int dhcp_identifier_set_duid_llt(struct duid *duid, usec_t t, const uint8_t *addr, size_t addr_len, uint16_t arp_type, size_t *len);
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int dhcp_identifier_set_duid_ll(struct duid *duid, const uint8_t *addr, size_t addr_len, uint16_t arp_type, size_t *len);
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int dhcp_identifier_set_duid_en(struct duid *duid, size_t *len);
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int dhcp_identifier_set_duid_uuid(struct duid *duid, size_t *len);
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int dhcp_identifier_set_iaid(int ifindex, const uint8_t *mac, size_t mac_len, bool legacy_unstable_byteorder, void *_id);
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