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   1 /*
   2  * Copyright (C) 1998 and 1999 WIDE Project.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the project nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 /*
  30  * draft-ietf-dhc-dhcpv6-14
  31  */
  32
  33 #ifndef __DHCP6_H_DEFINED
  34 #define __DHCP6_H_DEFINED
  35
  36 /* Error Values */
  37 #define DH6ERR_FAILURE          16
  38 #define DH6ERR_AUTHFAIL         17
  39 #define DH6ERR_POORLYFORMED     18
  40 #define DH6ERR_UNAVAIL          19
  41 #define DH6ERR_NOBINDING        20
  42 #define DH6ERR_INVALIDSOURCE    21
  43 #define DH6ERR_NOSERVER         23
  44 #define DH6ERR_ICMPERROR        64
  45
  46 /* Message type */
  47 #define DH6_SOLICIT     1
  48 #define DH6_ADVERT      2
  49 #define DH6_REQUEST     3
  50 #define DH6_REPLY       4
  51 #define DH6_RELEASE     5
  52 #define DH6_RECONFIG    6
  53
  54 /* Predefined addresses */
  55 #define DH6ADDR_ALLAGENT        "ff02::1:2"
  56 #define DH6ADDR_ALLSERVER       "ff05::1:3"
  57 #define DH6ADDR_ALLRELAY        "ff05::1:4"
  58 #define DH6PORT_DOWNSTREAM      "546"
  59 #define DH6PORT_UPSTREAM        "547"
  60
  61 /* Protocol constants */
  62 #define ADV_CLIENT_WAIT         2       /* sec */
  63 #define DEFAULT_SOLICIT_HOPCOUNT        4
  64 #define SERVER_MIN_ADV_DELAY    100     /* msec */
  65 #define SERVER_MAX_ADV_DELAY    1000    /* msec */
  66 #define REPLY_MSG_TIMEOUT       2       /* sec */
  67 #define REQUEST_MSG_MIN_RETRANS 10      /* retransmissions */
  68 #define RECONF_MSG_MIN_RETRANS  10      /* retransmissions */
  69 #define RECONF_MSG_RETRANS_INTERVAL     12      /* sec */
  70 #define RECONF_MMSG_MIN_RESP    2       /* sec */
  71 #define RECONF_MMSG_MAX_RESP    10      /* sec */
  72 #define RECONF_MULTICAST_REQUEST_WAIT   120     /* sec */
  73 #define MIN_SOLICIT_DELAY       1       /* sec */
  74 #define MAX_SOLICIT_DELAY       5       /* sec */
  75 #define XID_TIMEOUT             600     /* sec */
  76
  77 /* DHCP6 base packet format */
  78 struct dhcp6_solicit {
  79         u_int8_t dh6sol_msgtype;                /* DH6_SOLICIT */
  80         u_int8_t dh6sol_flags;
  81 #define DH6SOL_CLOSE    0x80
  82         u_int8_t dh6sol_pad;
  83         u_int8_t dh6sol_prefixsiz;      /* prefix-size */
  84         struct in6_addr dh6sol_cliaddr; /* client's lladdr */
  85         struct in6_addr dh6sol_relayaddr; /* relay agent's lladdr */
  86 };
  87
  88 /* NOTE: dhcpv6-12 and dhcpv6-13+n are not compatible at all */
  89 struct dhcp6_advert {
  90         u_int8_t dh6adv_msgtype;                /* DH6_ADVERT */
  91         u_int8_t dh6adv_flags;
  92 #define DH6ADV_SERVPRESENT      0x80
  93         u_int8_t dh6adv_pad;
  94         u_int8_t dh6adv_pref;
  95         struct in6_addr dh6adv_cliaddr; /* client's lladdr */
  96         struct in6_addr dh6adv_relayaddr; /* relay agent's (non-ll) addr */
  97         struct in6_addr dh6adv_serveraddr; /* server's addr */
  98         /* extensions */
  99 };
 100
 101 struct dhcp6_request {
 102         u_int8_t dh6req_msgtype;                /* DH6_REQUEST */
 103         u_int8_t dh6req_flags;
 104 #define DH6REQ_CLOSE            0x80
 105 #define DH6REQ_SERVPRESENT      0x40
 106 #define DH6REQ_REBOOT           0x20
 107         u_int16_t dh6req_xid;           /* transaction-ID */
 108         struct in6_addr dh6req_cliaddr; /* client's lladdr */
 109         struct in6_addr dh6req_relayaddr; /* relay agent's (non-ll) addr */
 110         /* struct in6_addr dh6req_serveraddr; optional: server's addr */
 111         /* extensions */
 112 };
 113
 114 struct dhcp6_reply {
 115         u_int8_t dh6rep_msgtype;                /* DH6_REPLY */
 116         u_int8_t dh6rep_flagandstat;
 117 #define DH6REP_CLIPRESENT       0x80
 118 #define DH6REP_STATMASK         0x7f
 119         u_int16_t dh6rep_xid;           /* transaction-ID */
 120         /* struct in6_addr dh6rep_cliaddr;      optional: client's lladdr */
 121         /* extensions */
 122 };
 123
 124 struct dhcp6_release {
 125         u_int8_t dh6rel_msgtype;                /* DH6_RELEASE */
 126         u_int8_t dh6rel_flags;
 127 #define DH6REL_DIRECT   0x80
 128         u_int16_t dh6rel_xid;           /* transaction-ID */
 129         struct in6_addr dh6rel_cliaddr; /* client's lladdr */
 130         struct in6_addr dh6rel_relayaddr; /* relay agent's (non-ll) addr */
 131         struct in6_addr dh6rel_reladdr; /* server's addr to be released */
 132         /* extensions */
 133 };
 134
 135 struct dhcp6_reconfig {
 136         u_int8_t dh6cfg_msgtype;                /* DH6_RECONFIG */
 137         u_int8_t dh6cfg_flags;
 138 #define DH6REP_NOREPLY  0x80
 139         u_int16_t dh6cfg_xid;           /* transaction-ID */
 140         struct in6_addr dh6cfg_servaddr; /* server's addr */
 141         /* extensions */
 142 };
 143
 144 union dhcp6 {
 145         u_int8_t dh6_msgtype;
 146         struct dhcp6_solicit dh6_sol;
 147         struct dhcp6_advert dh6_adv;
 148         struct dhcp6_request dh6_req;
 149         struct dhcp6_reply dh6_rep;
 150         struct dhcp6_release dh6_rel;
 151         struct dhcp6_reconfig dh6_cfg;
 152 };
 153
 154 /* DHCP6 extension */
 155 struct dhcp6e_ipaddr {
 156         u_int16_t dh6eip_type;
 157         u_int16_t dh6eip_len;
 158         u_int8_t dh6eip_status;
 159 #define DH6EX_IP_SUCCESS        0       /* request granted, no errors */
 160 #define DH6EX_IP_SECFAIL        18      /* Security parameters failed */
 161 #define DH6EX_IP_AAAAFAIL       20      /* AAAA Record Parameter Problem */
 162 #define DH6EX_IP_PTRFAIL        21      /* PTR Record Parameter Problem */
 163 #define DH6EX_IP_PARAMFAIL      22      /* Unable to honor required params */
 164 #define DH6EX_IP_DNSNAMEFAIL    23      /* DNS name string error */
 165 #define DH6EX_IP_NODYNDNS       24      /* dynDNS Not Implemented */
 166 #define DH6EX_IP_NOAUTHDNS      25      /* Authoritative DNS Server not found */
 167 #define DH6EX_IP_DNSFORMFAIL    33      /* DNS format error */
 168 #define DH6EX_IP_SERVFAIL       34      /* dynDNS unavailable at this time */
 169 #define DH6EX_IP_NXDOMAIN       35      /* name does not exist */
 170 #define DH6EX_IP_NOTIMP         36      /* DNS does not support the Opcode */
 171 #define DH6EX_IP_REFUSED        37      /* DNS refuses specified operation */
 172 #define DH6EX_IP_YXDOMAIN       38      /* name does not exist */
 173 #define DH6EX_IP_YXRRSET        39      /* RRset does not exist */
 174 #define DH6EX_IP_NXRRSET        40      /* RRset does not exist */
 175 #define DH6EX_IP_NOTAUTH        41      /* non authoritative name server */
 176 #define DH6EX_IP_NOTZONE        42      /* prerequisite out of zone */
 177         u_int8_t dh6eip_flags;
 178 #define DH6EX_IP_CLIANTADDR     0x80    /* C: cliant's addr */
 179 #define DH6EX_IP_LIFETIME       0x40    /* L: preferred/valid lifetime */
 180 #define DH6EX_IP_FORCEOPTS      0x20    /* Q: options are mandatory */
 181 #define DH6EX_IP_AAAA           0x10    /* A: DNS dynamic update for AAAA */
 182 #define DH6EX_IP_PTR            0x08    /* P: DNS dynamic update for PTR*/
 183         u_int8_t dh6eip_pad;
 184         u_int8_t dh6eip_prefixlen;
 185         /* struct in6_addr: client's address (if C bit = 1) */
 186         /* u_int: preferred lifetime (if L bit = 1) */
 187         /* u_int: valid lifetime (if L bit = 1) */
 188         /* string: DNS name */
 189 };
 190
 191 #endif /*__DHCP6_H_DEFINED*/