src/libsystemd-network/dhcp6-protocol.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright (C) 2014 Intel Corporation. All rights reserved.
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <netinet/ip6.h>
  24 #include <netinet/udp.h>
  25
  26 #include "macro.h"
  27 #include "sparse-endian.h"
  28
  29 struct DHCP6Message {
  30         union {
  31                 struct {
  32                         uint8_t type;
  33                         uint8_t _pad[3];
  34                 } _packed_;
  35                 be32_t transaction_id;
  36         };
  37 } _packed_;
  38
  39 typedef struct DHCP6Message DHCP6Message;
  40
  41 #define DHCP6_MIN_OPTIONS_SIZE \
  42         1280 - sizeof(struct ip6_hdr) - sizeof(struct udphdr)
  43
  44 #define IN6ADDR_ALL_DHCP6_RELAY_AGENTS_AND_SERVERS_INIT \
  45         { { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
  46               0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02 } } }
  47
  48 enum {
  49         DHCP6_PORT_SERVER                       = 547,
  50         DHCP6_PORT_CLIENT                       = 546,
  51 };
  52
  53 #define DHCP6_INF_TIMEOUT                       1 * USEC_PER_SEC
  54 #define DHCP6_INF_MAX_RT                        120 * USEC_PER_SEC
  55 #define DHCP6_SOL_MAX_DELAY                     1 * USEC_PER_SEC
  56 #define DHCP6_SOL_TIMEOUT                       1 * USEC_PER_SEC
  57 #define DHCP6_SOL_MAX_RT                        120 * USEC_PER_SEC
  58 #define DHCP6_REQ_TIMEOUT                       1 * USEC_PER_SEC
  59 #define DHCP6_REQ_MAX_RT                        120 * USEC_PER_SEC
  60 #define DHCP6_REQ_MAX_RC                        10
  61 #define DHCP6_REN_TIMEOUT                       10 * USEC_PER_SEC
  62 #define DHCP6_REN_MAX_RT                        600 * USEC_PER_SEC
  63 #define DHCP6_REB_TIMEOUT                       10 * USEC_PER_SEC
  64 #define DHCP6_REB_MAX_RT                        600 * USEC_PER_SEC
  65
  66 enum DHCP6State {
  67         DHCP6_STATE_STOPPED                     = 0,
  68         DHCP6_STATE_INFORMATION_REQUEST         = 1,
  69         DHCP6_STATE_SOLICITATION                = 2,
  70         DHCP6_STATE_REQUEST                     = 3,
  71         DHCP6_STATE_BOUND                       = 4,
  72         DHCP6_STATE_RENEW                       = 5,
  73         DHCP6_STATE_REBIND                      = 6,
  74 };
  75
  76 enum {
  77         DHCP6_SOLICIT                           = 1,
  78         DHCP6_ADVERTISE                         = 2,
  79         DHCP6_REQUEST                           = 3,
  80         DHCP6_CONFIRM                           = 4,
  81         DHCP6_RENEW                             = 5,
  82         DHCP6_REBIND                            = 6,
  83         DHCP6_REPLY                             = 7,
  84         DHCP6_RELEASE                           = 8,
  85         DHCP6_DECLINE                           = 9,
  86         DHCP6_RECONFIGURE                       = 10,
  87         DHCP6_INFORMATION_REQUEST               = 11,
  88         DHCP6_RELAY_FORW                        = 12,
  89         DHCP6_RELAY_REPL                        = 13,
  90         _DHCP6_MESSAGE_MAX                      = 14,
  91 };
  92
  93 enum {
  94         DHCP6_NTP_SUBOPTION_SRV_ADDR            = 1,
  95         DHCP6_NTP_SUBOPTION_MC_ADDR             = 2,
  96         DHCP6_NTP_SUBOPTION_SRV_FQDN            = 3,
  97 };
  98
  99 enum {
 100         DHCP6_STATUS_SUCCESS                    = 0,
 101         DHCP6_STATUS_UNSPEC_FAIL                = 1,
 102         DHCP6_STATUS_NO_ADDRS_AVAIL             = 2,
 103         DHCP6_STATUS_NO_BINDING                 = 3,
 104         DHCP6_STATUS_NOT_ON_LINK                = 4,
 105         DHCP6_STATUS_USE_MULTICAST              = 5,
 106         _DHCP6_STATUS_MAX                       = 6,
 107 };
 108
 109 enum {
 110         DHCP6_FQDN_FLAG_S = (1 << 0),
 111         DHCP6_FQDN_FLAG_O = (1 << 1),
 112         DHCP6_FQDN_FLAG_N = (1 << 2),
 113 };