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dhcp6-protocol.h
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dhcp6-protocol.h
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
/***
Copyright © 2014 Intel Corporation. All rights reserved.
***/
#include <errno.h>
#include <netinet/ip6.h>
#include <netinet/udp.h>
#include "macro.h"
#include "sparse-endian.h"
struct DHCP6Message {
union {
struct {
uint8_t type;
uint8_t _pad[3];
} _packed_;
be32_t transaction_id;
};
uint8_t options[];
} _packed_;
typedef struct DHCP6Message DHCP6Message;
#define DHCP6_MIN_OPTIONS_SIZE \
1280 - sizeof(struct ip6_hdr) - sizeof(struct udphdr)
#define IN6ADDR_ALL_DHCP6_RELAY_AGENTS_AND_SERVERS_INIT \
{ { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02 } } }
enum {
DHCP6_PORT_SERVER = 547,
DHCP6_PORT_CLIENT = 546,
};
#define DHCP6_INF_TIMEOUT (1 * USEC_PER_SEC)
#define DHCP6_INF_MAX_RT (120 * USEC_PER_SEC)
#define DHCP6_SOL_MAX_DELAY (1 * USEC_PER_SEC)
#define DHCP6_SOL_TIMEOUT (1 * USEC_PER_SEC)
#define DHCP6_SOL_MAX_RT (120 * USEC_PER_SEC)
#define DHCP6_REQ_TIMEOUT (1 * USEC_PER_SEC)
#define DHCP6_REQ_MAX_RT (120 * USEC_PER_SEC)
#define DHCP6_REQ_MAX_RC 10
#define DHCP6_REN_TIMEOUT (10 * USEC_PER_SEC)
#define DHCP6_REN_MAX_RT (600 * USEC_PER_SEC)
#define DHCP6_REB_TIMEOUT (10 * USEC_PER_SEC)
#define DHCP6_REB_MAX_RT (600 * USEC_PER_SEC)
typedef enum DHCP6State {
DHCP6_STATE_STOPPED,
DHCP6_STATE_INFORMATION_REQUEST,
DHCP6_STATE_SOLICITATION,
DHCP6_STATE_REQUEST,
DHCP6_STATE_BOUND,
DHCP6_STATE_RENEW,
DHCP6_STATE_REBIND,
_DHCP6_STATE_MAX,
_DHCP6_STATE_INVALID = -EINVAL,
} DHCP6State;
/* https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml#dhcpv6-parameters-1 */
typedef enum DHCP6MessageType {
DHCP6_MESSAGE_SOLICIT = 1, /* RFC 8415 */
DHCP6_MESSAGE_ADVERTISE = 2, /* RFC 8415 */
DHCP6_MESSAGE_REQUEST = 3, /* RFC 8415 */
DHCP6_MESSAGE_CONFIRM = 4, /* RFC 8415 */
DHCP6_MESSAGE_RENEW = 5, /* RFC 8415 */
DHCP6_MESSAGE_REBIND = 6, /* RFC 8415 */
DHCP6_MESSAGE_REPLY = 7, /* RFC 8415 */
DHCP6_MESSAGE_RELEASE = 8, /* RFC 8415 */
DHCP6_MESSAGE_DECLINE = 9, /* RFC 8415 */
DHCP6_MESSAGE_RECONFIGURE = 10, /* RFC 8415 */
DHCP6_MESSAGE_INFORMATION_REQUEST = 11, /* RFC 8415 */
DHCP6_MESSAGE_RELAY_FORWARD = 12, /* RFC 8415 */
DHCP6_MESSAGE_RELAY_REPLY = 13, /* RFC 8415 */
DHCP6_MESSAGE_LEASE_QUERY = 14, /* RFC 5007 */
DHCP6_MESSAGE_LEASE_QUERY_REPLY = 15, /* RFC 5007 */
DHCP6_MESSAGE_LEASE_QUERY_DONE = 16, /* RFC 5460 */
DHCP6_MESSAGE_LEASE_QUERY_DATA = 17, /* RFC 5460 */
DHCP6_MESSAGE_RECONFIGURE_REQUEST = 18, /* RFC 6977 */
DHCP6_MESSAGE_RECONFIGURE_REPLY = 19, /* RFC 6977 */
DHCP6_MESSAGE_DHCPV4_QUERY = 20, /* RFC 7341 */
DHCP6_MESSAGE_DHCPV4_RESPONSE = 21, /* RFC 7341 */
DHCP6_MESSAGE_ACTIVE_LEASE_QUERY = 22, /* RFC 7653 */
DHCP6_MESSAGE_START_TLS = 23, /* RFC 7653 */
DHCP6_MESSAGE_BINDING_UPDATE = 24, /* RFC 8156 */
DHCP6_MESSAGE_BINDING_REPLY = 25, /* RFC 8156 */
DHCP6_MESSAGE_POOL_REQUEST = 26, /* RFC 8156 */
DHCP6_MESSAGE_POOL_RESPONSE = 27, /* RFC 8156 */
DHCP6_MESSAGE_UPDATE_REQUEST = 28, /* RFC 8156 */
DHCP6_MESSAGE_UPDATE_REQUEST_ALL = 29, /* RFC 8156 */
DHCP6_MESSAGE_UPDATE_DONE = 30, /* RFC 8156 */
DHCP6_MESSAGE_CONNECT = 31, /* RFC 8156 */
DHCP6_MESSAGE_CONNECT_REPLY = 32, /* RFC 8156 */
DHCP6_MESSAGE_DISCONNECT = 33, /* RFC 8156 */
DHCP6_MESSAGE_STATE = 34, /* RFC 8156 */
DHCP6_MESSAGE_CONTACT = 35, /* RFC 8156 */
_DHCP6_MESSAGE_TYPE_MAX,
_DHCP6_MESSAGE_TYPE_INVALID = -EINVAL,
} DHCP6MessageType;
typedef enum DHCP6NTPSubOption {
DHCP6_NTP_SUBOPTION_SRV_ADDR = 1,
DHCP6_NTP_SUBOPTION_MC_ADDR = 2,
DHCP6_NTP_SUBOPTION_SRV_FQDN = 3,
_DHCP6_NTP_SUBOPTION_MAX,
_DHCP6_NTP_SUBOPTION_INVALID = -EINVAL,
} DHCP6NTPSubOption;
/*
* RFC 8415, RFC 5007 and RFC 7653 status codes:
* https://www.iana.org/assignments/dhcpv6-parameters/dhcpv6-parameters.xhtml#dhcpv6-parameters-5
*/
typedef enum DHCP6Status {
DHCP6_STATUS_SUCCESS = 0,
DHCP6_STATUS_UNSPEC_FAIL = 1,
DHCP6_STATUS_NO_ADDRS_AVAIL = 2,
DHCP6_STATUS_NO_BINDING = 3,
DHCP6_STATUS_NOT_ON_LINK = 4,
DHCP6_STATUS_USE_MULTICAST = 5,
DHCP6_STATUS_NO_PREFIX_AVAIL = 6,
DHCP6_STATUS_UNKNOWN_QUERY_TYPE = 7,
DHCP6_STATUS_MALFORMED_QUERY = 8,
DHCP6_STATUS_NOT_CONFIGURED = 9,
DHCP6_STATUS_NOT_ALLOWED = 10,
DHCP6_STATUS_QUERY_TERMINATED = 11,
DHCP6_STATUS_DATA_MISSING = 12,
DHCP6_STATUS_CATCHUP_COMPLETE = 13,
DHCP6_STATUS_NOT_SUPPORTED = 14,
DHCP6_STATUS_TLS_CONNECTION_REFUSED = 15,
DHCP6_STATUS_ADDRESS_IN_USE = 16,
DHCP6_STATUS_CONFIGURATION_CONFLICT = 17,
DHCP6_STATUS_MISSING_BINDING_INFORMATION = 18,
DHCP6_STATUS_OUTDATED_BINDING_INFORMATION = 19,
DHCP6_STATUS_SERVER_SHUTTING_DOWN = 20,
DHCP6_STATUS_DNS_UPDATE_NOT_SUPPORTED = 21,
DHCP6_STATUS_EXCESSIVE_TIME_SKEW = 22,
_DHCP6_STATUS_MAX,
_DHCP6_STATUS_INVALID = -EINVAL,
} DHCP6Status;
typedef enum DHCP6FQDNFlag {
DHCP6_FQDN_FLAG_S = 1 << 0,
DHCP6_FQDN_FLAG_O = 1 << 1,
DHCP6_FQDN_FLAG_N = 1 << 2,
} DHCP6FQDNFlag;
const char *dhcp6_state_to_string(DHCP6State s) _const_;
const char *dhcp6_message_type_to_string(DHCP6MessageType s) _const_;
DHCP6MessageType dhcp6_message_type_from_string(const char *s) _pure_;
const char *dhcp6_message_status_to_string(DHCP6Status s) _const_;
DHCP6Status dhcp6_message_status_from_string(const char *s) _pure_;