dhcp6.h

This directory contains source code for tcpdump, a tool for network monitoring and data acquisition

/*
 * Copyright (C) 1998 and 1999 WIDE Project.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
/*
 * draft-ietf-dhc-dhcpv6-14
 */

#ifndef __DHCP6_H_DEFINED
#define __DHCP6_H_DEFINED

/* Error Values
 */
#define DH6ERR_FAILURE          16
#define DH6ERR_AUTHFAIL         17
#define DH6ERR_POORLYFORMED     18
#define DH6ERR_UNAVAIL          19
#define DH6ERR_NOBINDING        20
#define DH6ERR_INVALIDSOURCE    21
#define DH6ERR_NOSERVER         23
#define DH6ERR_ICMPERROR        64

/* Message type
 */
#define DH6_SOLICIT             1
#define DH6_ADVERT              2
#define DH6_REQUEST             3
#define DH6_REPLY               4
#define DH6_RELEASE             5
#define DH6_RECONFIG            6

/* Predefined addresses
 */
#define DH6ADDR_ALLAGENT        "ff02::1:2"
#define DH6ADDR_ALLSERVER       "ff05::1:3"
#define DH6ADDR_ALLRELAY        "ff05::1:4"
#define DH6PORT_DOWNSTREAM      "546"
#define DH6PORT_UPSTREAM        "547"

/* Protocol constants
 */
#define ADV_CLIENT_WAIT                  2  /* sec */
#define DEFAULT_SOLICIT_HOPCOUNT         4
#define SERVER_MIN_ADV_DELAY           100  /* msec */
#define SERVER_MAX_ADV_DELAY          1000  /* msec */
#define REPLY_MSG_TIMEOUT                2  /* sec */
#define REQUEST_MSG_MIN_RETRANS         10  /* retransmissions */
#define RECONF_MSG_MIN_RETRANS          10  /* retransmissions */
#define RECONF_MSG_RETRANS_INTERVAL     12  /* sec */
#define RECONF_MMSG_MIN_RESP             2  /* sec */
#define RECONF_MMSG_MAX_RESP            10  /* sec */
#define RECONF_MULTICAST_REQUEST_WAIT  120  /* sec */
#define MIN_SOLICIT_DELAY                1  /* sec */
#define MAX_SOLICIT_DELAY                5  /* sec */
#define XID_TIMEOUT                    600  /* sec */

/* DHCP6 base packet format
 */
struct dhcp6_solicit {
       u_int8_t        dh6sol_msgtype;    /* DH6_SOLICIT */
       u_int8_t        dh6sol_flags;
#define DH6SOL_CLOSE 0x80
       u_int8_t        dh6sol_pad;
       u_int8_t        dh6sol_prefixsiz;  /* prefix-size */
       struct in6_addr dh6sol_cliaddr;    /* client's lladdr */
       struct in6_addr dh6sol_relayaddr;  /* relay agent's lladdr */
     };

/* NOTE: dhcpv6-12 and dhcpv6-13+n are not compatible at all
 */
struct dhcp6_advert {
       u_int8_t        dh6adv_msgtype;    /* DH6_ADVERT */
       u_int8_t        dh6adv_flags;
#define DH6ADV_SERVPRESENT  0x80
       u_int8_t        dh6adv_pad;
       u_int8_t        dh6adv_pref;
       struct in6_addr dh6adv_cliaddr;    /* client's lladdr */
       struct in6_addr dh6adv_relayaddr;  /* relay agent's (non-ll) addr */
       struct in6_addr dh6adv_serveraddr; /* server's addr */
       /* extensions */
     };

struct dhcp6_request {
       u_int8_t        dh6req_msgtype;    /* DH6_REQUEST */
       u_int8_t        dh6req_flags;
#define DH6REQ_CLOSE        0x80
#define DH6REQ_SERVPRESENT  0x40
#define DH6REQ_REBOOT       0x20
       u_int16_t       dh6req_xid;        /* transaction-ID */
       struct in6_addr dh6req_cliaddr;    /* client's lladdr */
       struct in6_addr dh6req_relayaddr;  /* relay agent's (non-ll) addr */
       /* struct in6_addr dh6req_serveraddr; optional: server's addr */
       /* extensions */
     };

struct dhcp6_reply {
       u_int8_t           dh6rep_msgtype;     /* DH6_REPLY */
       u_int8_t           dh6rep_flagandstat;
#define DH6REP_CLIPRESENT 0x80
#define DH6REP_STATMASK   0x7f
       u_int16_t          dh6rep_xid;         /* transaction-ID */
       /* struct in6_addr dh6rep_cliaddr;     optional: client's lladdr */
       /* extensions */
     };

struct dhcp6_release {
       u_int8_t        dh6rel_msgtype;   /* DH6_RELEASE */
       u_int8_t        dh6rel_flags;
#define DH6REL_DIRECT  0x80
       u_int16_t       dh6rel_xid;       /* transaction-ID */
       struct in6_addr dh6rel_cliaddr;   /* client's lladdr */
       struct in6_addr dh6rel_relayaddr; /* relay agent's (non-ll) addr */
       struct in6_addr dh6rel_reladdr;   /* server's addr to be released */
       /* extensions */
     };

struct dhcp6_reconfig {
       u_int8_t        dh6cfg_msgtype;   /* DH6_RECONFIG */
       u_int8_t        dh6cfg_flags;
#define DH6REP_NOREPLY 0x80
       u_int16_t       dh6cfg_xid;       /* transaction-ID */
       struct in6_addr dh6cfg_servaddr;  /* server's addr */
       /* extensions */
     };

union dhcp6 {
      u_int8_t              dh6_msgtype;
      struct dhcp6_solicit  dh6_sol;
      struct dhcp6_advert   dh6_adv;
      struct dhcp6_request  dh6_req;
      struct dhcp6_reply    dh6_rep;
      struct dhcp6_release  dh6_rel;
      struct dhcp6_reconfig dh6_cfg;
    };

/* DHCP6 extension
 */
struct dhcp6e_ipaddr {
       u_int16_t  dh6eip_type;
       u_int16_t  dh6eip_len;
       u_int8_t   dh6eip_status;
#define DH6EX_IP_SUCCESS         0  /* request granted, no errors */
#define DH6EX_IP_SECFAIL        18  /* Security parameters failed */
#define DH6EX_IP_AAAAFAIL       20  /* AAAA Record Parameter Problem */
#define DH6EX_IP_PTRFAIL        21  /* PTR Record Parameter Problem */
#define DH6EX_IP_PARAMFAIL      22  /* Unable to honor required params */
#define DH6EX_IP_DNSNAMEFAIL    23  /* DNS name string error */
#define DH6EX_IP_NODYNDNS       24  /* dynDNS Not Implemented */
#define DH6EX_IP_NOAUTHDNS      25  /* Authoritative DNS Server not found */
#define DH6EX_IP_DNSFORMFAIL    33  /* DNS format error */
#define DH6EX_IP_SERVFAIL       34  /* dynDNS unavailable at this time */
#define DH6EX_IP_NXDOMAIN       35  /* name does not exist */
#define DH6EX_IP_NOTIMP         36  /* DNS does not support the Opcode */
#define DH6EX_IP_REFUSED        37  /* DNS refuses specified operation */
#define DH6EX_IP_YXDOMAIN       38  /* name does not exist */
#define DH6EX_IP_YXRRSET        39  /* RRset does not exist */
#define DH6EX_IP_NXRRSET        40  /* RRset does not exist */
#define DH6EX_IP_NOTAUTH        41  /* non authoritative name server */
#define DH6EX_IP_NOTZONE        42  /* prerequisite out of zone */

       u_int8_t  dh6eip_flags;
#define DH6EX_IP_CLIANTADDR   0x80  /* C: cliant's addr */
#define DH6EX_IP_LIFETIME     0x40  /* L: preferred/valid lifetime */
#define DH6EX_IP_FORCEOPTS    0x20  /* Q: options are mandatory */
#define DH6EX_IP_AAAA         0x10  /* A: DNS dynamic update for AAAA */
#define DH6EX_IP_PTR          0x08  /* P: DNS dynamic update for PTR */
       u_int8_t  dh6eip_pad;
       u_int8_t  dh6eip_prefixlen;
       /* struct in6_addr: client's address (if C bit = 1) */
       /* u_int: preferred lifetime (if L bit = 1) */
       /* u_int: valid lifetime (if L bit = 1) */
       /* string: DNS name */
     };

#endif /*__DHCP6_H_DEFINED*/