bbfa43ca37
Implement Information Request message according to RFC 3315, section 18.1.5. with the excepion that the first message is not delayed by a random amount. Instead systemd-networkd is supposed to take care of desynchronizing between other clients. Initialize the DHCPv6 client structure in sd_dhcp6_client_start() as this allows toggling between information request and normal DHCPv6 address aquisition modes.
145 lines
5.5 KiB
C
145 lines
5.5 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright (C) 2014 Intel Corporation. All rights reserved.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <netinet/ip6.h>
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#include <netinet/udp.h>
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#include "macro.h"
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#include "sparse-endian.h"
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struct DHCP6Message {
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union {
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struct {
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uint8_t type;
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uint8_t _pad[3];
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} _packed_;
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be32_t transaction_id;
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};
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} _packed_;
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typedef struct DHCP6Message DHCP6Message;
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#define DHCP6_MIN_OPTIONS_SIZE \
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1280 - sizeof(struct ip6_hdr) - sizeof(struct udphdr)
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#define IN6ADDR_ALL_DHCP6_RELAY_AGENTS_AND_SERVERS_INIT \
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{ { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02 } } }
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enum {
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DHCP6_PORT_SERVER = 547,
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DHCP6_PORT_CLIENT = 546,
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};
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#define DHCP6_INF_TIMEOUT 1 * USEC_PER_SEC
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#define DHCP6_INF_MAX_RT 120 * USEC_PER_SEC
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#define DHCP6_SOL_MAX_DELAY 1 * USEC_PER_SEC
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#define DHCP6_SOL_TIMEOUT 1 * USEC_PER_SEC
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#define DHCP6_SOL_MAX_RT 120 * USEC_PER_SEC
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#define DHCP6_REQ_TIMEOUT 1 * USEC_PER_SEC
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#define DHCP6_REQ_MAX_RT 120 * USEC_PER_SEC
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#define DHCP6_REQ_MAX_RC 10
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#define DHCP6_REN_TIMEOUT 10 * USEC_PER_SEC
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#define DHCP6_REN_MAX_RT 600 * USEC_PER_SEC
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#define DHCP6_REB_TIMEOUT 10 * USEC_PER_SEC
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#define DHCP6_REB_MAX_RT 600 * USEC_PER_SEC
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enum {
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DHCP6_DUID_LLT = 1,
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DHCP6_DUID_EN = 2,
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DHCP6_DUID_LL = 3,
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DHCP6_DUID_UUID = 4,
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};
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enum DHCP6State {
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DHCP6_STATE_STOPPED = 0,
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DHCP6_STATE_INFORMATION_REQUEST = 1,
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DHCP6_STATE_SOLICITATION = 2,
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DHCP6_STATE_REQUEST = 3,
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DHCP6_STATE_BOUND = 4,
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DHCP6_STATE_RENEW = 5,
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DHCP6_STATE_REBIND = 6,
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};
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enum {
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DHCP6_SOLICIT = 1,
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DHCP6_ADVERTISE = 2,
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DHCP6_REQUEST = 3,
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DHCP6_CONFIRM = 4,
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DHCP6_RENEW = 5,
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DHCP6_REBIND = 6,
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DHCP6_REPLY = 7,
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DHCP6_RELEASE = 8,
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DHCP6_DECLINE = 9,
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DHCP6_RECONFIGURE = 10,
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DHCP6_INFORMATION_REQUEST = 11,
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DHCP6_RELAY_FORW = 12,
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DHCP6_RELAY_REPL = 13,
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_DHCP6_MESSAGE_MAX = 14,
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};
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enum {
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DHCP6_OPTION_CLIENTID = 1,
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DHCP6_OPTION_SERVERID = 2,
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DHCP6_OPTION_IA_NA = 3,
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DHCP6_OPTION_IA_TA = 4,
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DHCP6_OPTION_IAADDR = 5,
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DHCP6_OPTION_ORO = 6,
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DHCP6_OPTION_PREFERENCE = 7,
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DHCP6_OPTION_ELAPSED_TIME = 8,
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DHCP6_OPTION_RELAY_MSG = 9,
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/* option code 10 is unassigned */
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DHCP6_OPTION_AUTH = 11,
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DHCP6_OPTION_UNICAST = 12,
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DHCP6_OPTION_STATUS_CODE = 13,
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DHCP6_OPTION_RAPID_COMMIT = 14,
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DHCP6_OPTION_USER_CLASS = 15,
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DHCP6_OPTION_VENDOR_CLASS = 16,
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DHCP6_OPTION_VENDOR_OPTS = 17,
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DHCP6_OPTION_INTERFACE_ID = 18,
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DHCP6_OPTION_RECONF_MSG = 19,
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DHCP6_OPTION_RECONF_ACCEPT = 20,
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DHCP6_OPTION_DNS_SERVERS = 23, /* RFC 3646 */
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DHCP6_OPTION_DOMAIN_LIST = 24, /* RFC 3646 */
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DHCP6_OPTION_SNTP_SERVERS = 31, /* RFC 4075 */
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/* option code 35 is unassigned */
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DHCP6_OPTION_NTP_SERVER = 56, /* RFC 5908 */
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/* option codes 89-142 are unassigned */
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/* option codes 144-65535 are unassigned */
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};
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enum {
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DHCP6_STATUS_SUCCESS = 0,
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DHCP6_STATUS_UNSPEC_FAIL = 1,
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DHCP6_STATUS_NO_ADDRS_AVAIL = 2,
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DHCP6_STATUS_NO_BINDING = 3,
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DHCP6_STATUS_NOT_ON_LINK = 4,
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DHCP6_STATUS_USE_MULTICAST = 5,
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_DHCP6_STATUS_MAX = 6,
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};
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