/* $NetBSD: icmp6.h,v 1.61 2024/12/06 18:36:09 riastradh Exp $ */
/* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 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.
*/
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. 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 University 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 REGENTS 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 REGENTS 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.
*
* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NETINET_ICMP6_H_
#define _NETINET_ICMP6_H_
#include <sys/types.h>
#include <netinet/in.h>
#define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
- sizeof(struct icmp6_hdr) */
struct icmp6_hdr {
u_int8_t icmp6_type; /* type field */
u_int8_t icmp6_code; /* code field */
u_int16_t icmp6_cksum; /* checksum field */
union {
u_int32_t icmp6_un_data32[1]; /* type-specific field */
u_int16_t icmp6_un_data16[2]; /* type-specific field */
u_int8_t icmp6_un_data8[4]; /* type-specific field */
} icmp6_dataun;
};
#define icmp6_data32 icmp6_dataun.icmp6_un_data32
#define icmp6_data16 icmp6_dataun.icmp6_un_data16
#define icmp6_data8 icmp6_dataun.icmp6_un_data8
#define icmp6_pptr icmp6_data32[0] /* parameter prob */
#define icmp6_mtu icmp6_data32[0] /* packet too big */
#define icmp6_id icmp6_data16[0] /* echo request/reply */
#define icmp6_seq icmp6_data16[1] /* echo request/reply */
#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
#define ICMP6_PARAM_PROB 4 /* ip6 header bad */
#define ICMP6_ECHO_REQUEST 128 /* echo service */
#define ICMP6_ECHO_REPLY 129 /* echo reply */
#define MLD_LISTENER_QUERY 130 /* multicast listener query */
#define MLD_LISTENER_REPORT 131 /* multicast listener report */
#define MLD_LISTENER_DONE 132 /* multicast listener done */
#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */
/* RFC2292 decls */
#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
#ifndef _KERNEL
/* the followings are for backward compatibility to old KAME apps. */
#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
#define MLD6_LISTENER_DONE MLD_LISTENER_DONE
#endif
#define ND_ROUTER_SOLICIT 133 /* router solicitation */
#define ND_ROUTER_ADVERT 134 /* router advertisement */
#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
#define ND_REDIRECT 137 /* redirect */
#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
#define ICMP6_WRUREQUEST 139 /* who are you request */
#define ICMP6_WRUREPLY 140 /* who are you reply */
#define ICMP6_FQDN_QUERY 139 /* FQDN query */
#define ICMP6_FQDN_REPLY 140 /* FQDN reply */
#define ICMP6_NI_QUERY 139 /* node information request */
#define ICMP6_NI_REPLY 140 /* node information reply */
#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */
/* The definitions below are experimental. TBA */
#define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */
#define MLD_MTRACE 201 /* mtrace messages */
#ifndef _KERNEL
/* the followings are for backward compatibility to old KAME apps. */
#define MLD6_MTRACE_RESP MLD_MTRACE_RESP
#define MLD6_MTRACE MLD_MTRACE
#endif
#define ICMP6_MAXTYPE 201
#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
#define ICMP6_DST_UNREACH_POLICY 5 /* source address failed ingress/egress policy */
#define ICMP6_DST_UNREACH_REJROUTE 6 /* reject route to destination */
#define ICMP6_DST_UNREACH_SOURCERT 7 /* error in source routing header */
#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
#define ICMP6_PARAMPROB_FRAGMENT 3 /* incomplete chain in frag */
#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
#define ICMP6_NI_SUCCESS 0 /* node information successful reply */
#define ICMP6_NI_REFUSED 1 /* node information request is refused */
#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
/* Used in kernel only */
#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
/*
* Multicast Listener Discovery
*/
struct mld_hdr {
struct icmp6_hdr mld_icmp6_hdr;
struct in6_addr mld_addr; /* multicast address */
};
/* definitions to provide backward compatibility to old KAME applications */
#ifndef _KERNEL
#define mld6_hdr mld_hdr
#define mld6_type mld_type
#define mld6_code mld_code
#define mld6_cksum mld_cksum
#define mld6_maxdelay mld_maxdelay
#define mld6_reserved mld_reserved
#define mld6_addr mld_addr
#endif
/* shortcut macro definitions */
#define mld_type mld_icmp6_hdr.icmp6_type
#define mld_code mld_icmp6_hdr.icmp6_code
#define mld_cksum mld_icmp6_hdr.icmp6_cksum
#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
#define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
#define MLD_MINLEN 24
/*
* Neighbor Discovery
*/
struct nd_router_solicit { /* router solicitation */
struct icmp6_hdr nd_rs_hdr;
/* could be followed by options */
};
#define nd_rs_type nd_rs_hdr.icmp6_type
#define nd_rs_code nd_rs_hdr.icmp6_code
#define nd_rs_cksum nd_rs_hdr.icmp6_cksum
#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
struct nd_router_advert { /* router advertisement */
struct icmp6_hdr nd_ra_hdr;
u_int32_t nd_ra_reachable; /* reachable time */
u_int32_t nd_ra_retransmit; /* retransmit timer */
/* could be followed by options */
};
#define nd_ra_type nd_ra_hdr.icmp6_type
#define nd_ra_code nd_ra_hdr.icmp6_code
#define nd_ra_cksum nd_ra_hdr.icmp6_cksum
#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
#define ND_RA_FLAG_MANAGED 0x80
#define ND_RA_FLAG_OTHER 0x40
#define ND_RA_FLAG_HOME_AGENT 0x20
#define ND_RA_FLAG_PROXY 0x04
/*
* Router preference values based on RFC4191.
*/
#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
struct nd_neighbor_solicit { /* neighbor solicitation */
struct icmp6_hdr nd_ns_hdr;
struct in6_addr nd_ns_target; /*target address */
/* could be followed by options */
};
#define nd_ns_type nd_ns_hdr.icmp6_type
#define nd_ns_code nd_ns_hdr.icmp6_code
#define nd_ns_cksum nd_ns_hdr.icmp6_cksum
#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
struct nd_neighbor_advert { /* neighbor advertisement */
struct icmp6_hdr nd_na_hdr;
struct in6_addr nd_na_target; /* target address */
/* could be followed by options */
};
#define nd_na_type nd_na_hdr.icmp6_type
#define nd_na_code nd_na_hdr.icmp6_code
#define nd_na_cksum nd_na_hdr.icmp6_cksum
#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
#if BYTE_ORDER == BIG_ENDIAN
#define ND_NA_FLAG_ROUTER 0x80000000
#define ND_NA_FLAG_SOLICITED 0x40000000
#define ND_NA_FLAG_OVERRIDE 0x20000000
#else
#if BYTE_ORDER == LITTLE_ENDIAN
#define ND_NA_FLAG_ROUTER 0x80
#define ND_NA_FLAG_SOLICITED 0x40
#define ND_NA_FLAG_OVERRIDE 0x20
#endif
#endif
struct nd_redirect { /* redirect */
struct icmp6_hdr nd_rd_hdr;
struct in6_addr nd_rd_target; /* target address */
struct in6_addr nd_rd_dst; /* destination address */
/* could be followed by options */
};
#define nd_rd_type nd_rd_hdr.icmp6_type
#define nd_rd_code nd_rd_hdr.icmp6_code
#define nd_rd_cksum nd_rd_hdr.icmp6_cksum
#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
struct nd_opt_hdr { /* Neighbor discovery option header */
u_int8_t nd_opt_type;
u_int8_t nd_opt_len;
/* followed by option specific data*/
};
#define ND_OPT_SOURCE_LINKADDR 1
#define ND_OPT_TARGET_LINKADDR 2
#define ND_OPT_PREFIX_INFORMATION 3
#define ND_OPT_REDIRECTED_HEADER 4
#define ND_OPT_MTU 5
#define ND_OPT_ADVINTERVAL 7
#define ND_OPT_HOMEAGENT_INFO 8
#define ND_OPT_SOURCE_ADDRLIST 9
#define ND_OPT_TARGET_ADDRLIST 10
#define ND_OPT_NONCE 14 /* RFC 3971 */
#define ND_OPT_MAP 23 /* RFC 5380 */
#define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */
#define ND_OPT_RDNSS 25 /* RFC 6016 */
#define ND_OPT_DNSSL 31 /* RFC 6016 */
#define ND_OPT_MAX 31
struct nd_opt_route_info { /* route info */
u_int8_t nd_opt_rti_type;
u_int8_t nd_opt_rti_len;
u_int8_t nd_opt_rti_prefixlen;
u_int8_t nd_opt_rti_flags;
u_int32_t nd_opt_rti_lifetime;
/* prefix follows */
};
struct nd_opt_prefix_info { /* prefix information */
u_int8_t nd_opt_pi_type;
u_int8_t nd_opt_pi_len;
u_int8_t nd_opt_pi_prefix_len;
u_int8_t nd_opt_pi_flags_reserved;
u_int32_t nd_opt_pi_valid_time;
u_int32_t nd_opt_pi_preferred_time;
u_int32_t nd_opt_pi_reserved2;
struct in6_addr nd_opt_pi_prefix;
};
#define ND_OPT_PI_FLAG_ONLINK 0x80
#define ND_OPT_PI_FLAG_AUTO 0x40
#define ND_OPT_PI_FLAG_ROUTER 0x20
struct nd_opt_rd_hdr { /* redirected header */
u_int8_t nd_opt_rh_type;
u_int8_t nd_opt_rh_len;
u_int16_t nd_opt_rh_reserved1;
u_int32_t nd_opt_rh_reserved2;
/* followed by IP header and data */
};
struct nd_opt_mtu { /* MTU option */
u_int8_t nd_opt_mtu_type;
u_int8_t nd_opt_mtu_len;
u_int16_t nd_opt_mtu_reserved;
u_int32_t nd_opt_mtu_mtu;
};
#define ND_OPT_NONCE_LEN ((1 * 8) - 2)
#if ((ND_OPT_NONCE_LEN + 2) % 8) != 0
#error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8."
#endif
struct nd_opt_nonce {
u_int8_t nd_opt_nonce_type;
u_int8_t nd_opt_nonce_len;
u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN];
};
struct nd_opt_rdnss { /* RDNSS option RFC 6106 */
u_int8_t nd_opt_rdnss_type;
u_int8_t nd_opt_rdnss_len;
u_int16_t nd_opt_rdnss_reserved;
u_int32_t nd_opt_rdnss_lifetime;
/* followed by list of IP prefixes */
};
struct nd_opt_dnssl { /* DNSSL option RFC 6106 */
u_int8_t nd_opt_dnssl_type;
u_int8_t nd_opt_dnssl_len;
u_int16_t nd_opt_dnssl_reserved;
u_int32_t nd_opt_dnssl_lifetime;
/* followed by list of IP prefixes */
};
/*
* icmp6 namelookup
*/
struct icmp6_namelookup {
struct icmp6_hdr icmp6_nl_hdr;
u_int8_t icmp6_nl_nonce[8];
int32_t icmp6_nl_ttl;
#if 0
u_int8_t icmp6_nl_len;
u_int8_t icmp6_nl_name[3];
#endif
/* could be followed by options */
};
/*
* icmp6 node information
*/
struct icmp6_nodeinfo {
struct icmp6_hdr icmp6_ni_hdr;
u_int8_t icmp6_ni_nonce[8];
/* could be followed by reply data */
};
#define ni_type icmp6_ni_hdr.icmp6_type
#define ni_code icmp6_ni_hdr.icmp6_code
#define ni_cksum icmp6_ni_hdr.icmp6_cksum
#define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
#define ni_flags icmp6_ni_hdr.icmp6_data16[1]
#define NI_QTYPE_NOOP 0 /* NOOP */
#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
#define NI_QTYPE_DNSNAME 2 /* DNS Name */
#define NI_QTYPE_NODEADDR 3 /* Node Addresses */
#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
#if BYTE_ORDER == BIG_ENDIAN
#define NI_SUPTYPE_FLAG_COMPRESS 0x1
#define NI_FQDN_FLAG_VALIDTTL 0x1
#elif BYTE_ORDER == LITTLE_ENDIAN
#define NI_SUPTYPE_FLAG_COMPRESS 0x0100
#define NI_FQDN_FLAG_VALIDTTL 0x0100
#endif
#ifdef NAME_LOOKUPS_04
#if BYTE_ORDER == BIG_ENDIAN
#define NI_NODEADDR_FLAG_LINKLOCAL 0x1
#define NI_NODEADDR_FLAG_SITELOCAL 0x2
#define NI_NODEADDR_FLAG_GLOBAL 0x4
#define NI_NODEADDR_FLAG_ALL 0x8
#define NI_NODEADDR_FLAG_TRUNCATE 0x10
#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
#elif BYTE_ORDER == LITTLE_ENDIAN
#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
#define NI_NODEADDR_FLAG_SITELOCAL 0x0200
#define NI_NODEADDR_FLAG_GLOBAL 0x0400
#define NI_NODEADDR_FLAG_ALL 0x0800
#define NI_NODEADDR_FLAG_TRUNCATE 0x1000
#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
#endif
#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
#if BYTE_ORDER == BIG_ENDIAN
#define NI_NODEADDR_FLAG_TRUNCATE 0x1
#define NI_NODEADDR_FLAG_ALL 0x2
#define NI_NODEADDR_FLAG_COMPAT 0x4
#define NI_NODEADDR_FLAG_LINKLOCAL 0x8
#define NI_NODEADDR_FLAG_SITELOCAL 0x10
#define NI_NODEADDR_FLAG_GLOBAL 0x20
#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
#elif BYTE_ORDER == LITTLE_ENDIAN
#define NI_NODEADDR_FLAG_TRUNCATE 0x0100
#define NI_NODEADDR_FLAG_ALL 0x0200
#define NI_NODEADDR_FLAG_COMPAT 0x0400
#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
#define NI_NODEADDR_FLAG_SITELOCAL 0x1000
#define NI_NODEADDR_FLAG_GLOBAL 0x2000
#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
#endif
#endif
struct ni_reply_fqdn {
u_int32_t ni_fqdn_ttl; /* TTL */
u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
};
/*
* Router Renumbering. as router-renum-08.txt
*/
struct icmp6_router_renum { /* router renumbering header */
struct icmp6_hdr rr_hdr;
u_int8_t rr_segnum;
u_int8_t rr_flags;
u_int16_t rr_maxdelay;
u_int32_t rr_reserved;
};
#define ICMP6_RR_FLAGS_TEST 0x80
#define ICMP6_RR_FLAGS_REQRESULT 0x40
#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
#define ICMP6_RR_FLAGS_SPECSITE 0x10
#define ICMP6_RR_FLAGS_PREVDONE 0x08
#define rr_type rr_hdr.icmp6_type
#define rr_code rr_hdr.icmp6_code
#define rr_cksum rr_hdr.icmp6_cksum
#define rr_seqnum rr_hdr.icmp6_data32[0]
struct rr_pco_match { /* match prefix part */
u_int8_t rpm_code;
u_int8_t rpm_len;
u_int8_t rpm_ordinal;
u_int8_t rpm_matchlen;
u_int8_t rpm_minlen;
u_int8_t rpm_maxlen;
u_int16_t rpm_reserved;
struct in6_addr rpm_prefix;
};
#define RPM_PCO_ADD 1
#define RPM_PCO_CHANGE 2
#define RPM_PCO_SETGLOBAL 3
#define RPM_PCO_MAX 4
struct rr_pco_use { /* use prefix part */
u_int8_t rpu_uselen;
u_int8_t rpu_keeplen;
u_int8_t rpu_ramask;
u_int8_t rpu_raflags;
u_int32_t rpu_vltime;
u_int32_t rpu_pltime;
u_int32_t rpu_flags;
struct in6_addr rpu_prefix;
};
#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
#if BYTE_ORDER == BIG_ENDIAN
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
#elif BYTE_ORDER == LITTLE_ENDIAN
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
#endif
struct rr_result { /* router renumbering result message */
u_int16_t rrr_flags;
u_int8_t rrr_ordinal;
u_int8_t rrr_matchedlen;
u_int32_t rrr_ifid;
struct in6_addr rrr_prefix;
};
#if BYTE_ORDER == BIG_ENDIAN
#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
#elif BYTE_ORDER == LITTLE_ENDIAN
#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
#endif
/*
* icmp6 filter structures.
*/
struct icmp6_filter {
u_int32_t icmp6_filt[8];
};
#define ICMP6_FILTER_SETPASSALL(filterp) \
(void)memset(filterp, 0xff, sizeof(struct icmp6_filter))
#define ICMP6_FILTER_SETBLOCKALL(filterp) \
(void)memset(filterp, 0x00, sizeof(struct icmp6_filter))
#define ICMP6_FILTER_SETPASS(type, filterp) \
(((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
#define ICMP6_FILTER_SETBLOCK(type, filterp) \
(((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
#define ICMP6_FILTER_WILLPASS(type, filterp) \
((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
/*
* Variables related to this implementation
* of the internet control message protocol version 6.
*/
/*
* IPv6 ICMP statistics.
* Each counter is an unsigned 64-bit value.
*/
#define ICMP6_STAT_ERROR 0 /* # of calls to icmp6_error */
#define ICMP6_STAT_CANTERROR 1 /* no error (old was icmp) */
#define ICMP6_STAT_TOOFREQ 2 /* no error (rate limitation) */
#define ICMP6_STAT_OUTHIST 3 /* # of output messages */
/* space for 256 counters */
#define ICMP6_STAT_BADCODE 259 /* icmp6_code out of range */
#define ICMP6_STAT_TOOSHORT 260 /* packet < sizeof(struct icmp6_hdr) */
#define ICMP6_STAT_CHECKSUM 261 /* bad checksum */
#define ICMP6_STAT_BADLEN 262 /* calculated bound mismatch */
/*
* number of responses; this member is inherited from the netinet code,
* but for netinet6 code, it is already available in outhist[].
*/
#define ICMP6_STAT_REFLECT 263
#define ICMP6_STAT_INHIST 264 /* # of input messages */
/* space for 256 counters */
#define ICMP6_STAT_ND_TOOMANYOPT 520 /* too many ND options */
#define ICMP6_STAT_OUTERRHIST 521
/* space for 13 counters */
#define ICMP6_STAT_PMTUCHG 534 /* path MTU changes */
#define ICMP6_STAT_ND_BADOPT 535 /* bad ND options */
#define ICMP6_STAT_BADNS 536 /* bad neighbor solicititation */
#define ICMP6_STAT_BADNA 537 /* bad neighbor advertisement */
#define ICMP6_STAT_BADRS 538 /* bad router solicitiation */
#define ICMP6_STAT_BADRA 539 /* bad router advertisement */
#define ICMP6_STAT_BADREDIRECT 540 /* bad redirect message */
#define ICMP6_STAT_DROPPED_RAROUTE 541 /* discarded routes from router advertisement */
#define ICMP6_NSTATS 542
#define ICMP6_ERRSTAT_DST_UNREACH_NOROUTE 0
#define ICMP6_ERRSTAT_DST_UNREACH_ADMIN 1
#define ICMP6_ERRSTAT_DST_UNREACH_BEYONDSCOPE 2
#define ICMP6_ERRSTAT_DST_UNREACH_ADDR 3
#define ICMP6_ERRSTAT_DST_UNREACH_NOPORT 4
#define ICMP6_ERRSTAT_PACKET_TOO_BIG 5
#define ICMP6_ERRSTAT_TIME_EXCEED_TRANSIT 6
#define ICMP6_ERRSTAT_TIME_EXCEED_REASSEMBLY 7
#define ICMP6_ERRSTAT_PARAMPROB_HEADER 8
#define ICMP6_ERRSTAT_PARAMPROB_NEXTHEADER 9
#define ICMP6_ERRSTAT_PARAMPROB_OPTION 10
#define ICMP6_ERRSTAT_REDIRECT 11
#define ICMP6_ERRSTAT_UNKNOWN 12
/*
* Names for ICMP sysctl objects
*/
#define ICMPV6CTL_STATS 1
#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
#if 0 /*obsoleted*/
#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
#endif
#define ICMPV6CTL_ND6_PRUNE 6
#define ICMPV6CTL_ND6_DELAY 8
#define ICMPV6CTL_ND6_UMAXTRIES 9
#define ICMPV6CTL_ND6_MMAXTRIES 10
#define ICMPV6CTL_ND6_USELOOPBACK 11
/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
#define ICMPV6CTL_NODEINFO 13
#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
#define ICMPV6CTL_ND6_MAXNUDHINT 15
#define ICMPV6CTL_MTUDISC_HIWAT 16
#define ICMPV6CTL_MTUDISC_LOWAT 17
#define ICMPV6CTL_ND6_DEBUG 18
#ifdef _KERNEL
#define OICMPV6CTL_ND6_DRLIST 19
#define OICMPV6CTL_ND6_PRLIST 20
#endif
#define ICMPV6CTL_ND6_MAXQLEN 24
#define ICMPV6CTL_REFLECT_PMTU 25
#define ICMPV6CTL_DYNAMIC_RT_MSG 26
#ifdef _KERNEL
struct rtentry;
void icmp6_init(void);
void icmp6_paramerror(struct mbuf *, int);
void icmp6_error(struct mbuf *, int, int, int);
void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *,
struct in6_addr *);
int icmp6_input(struct mbuf **, int *, int);
void icmp6_fasttimo(void);
void icmp6_prepare(struct mbuf *);
void icmp6_redirect_output(struct mbuf *, struct rtentry *);
int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
void icmp6_statinc(u_int);
struct ip6ctlparam;
void icmp6_mtudisc_update(struct ip6ctlparam *, int);
void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *));
/* XXX: is this the right place for these macros? */
#define icmp6_ifstat_inc(ifp, tag) \
do { \
if (ifp) \
((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
} while (/*CONSTCOND*/ 0)
#define icmp6_ifoutstat_inc(ifp, type, code) \
do { \
icmp6_ifstat_inc(ifp, ifs6_out_msg); \
switch(type) { \
case ICMP6_DST_UNREACH: \
icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
if (code == ICMP6_DST_UNREACH_ADMIN) \
icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
break; \
case ICMP6_PACKET_TOO_BIG: \
icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
break; \
case ICMP6_TIME_EXCEEDED: \
icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
break; \
case ICMP6_PARAM_PROB: \
icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
break; \
case ICMP6_ECHO_REQUEST: \
icmp6_ifstat_inc(ifp, ifs6_out_echo); \
break; \
case ICMP6_ECHO_REPLY: \
icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
break; \
case MLD_LISTENER_QUERY: \
icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
break; \
case MLD_LISTENER_REPORT: \
icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
break; \
case MLD_LISTENER_DONE: \
icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
break; \
case ND_ROUTER_SOLICIT: \
icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
break; \
case ND_ROUTER_ADVERT: \
icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
break; \
case ND_NEIGHBOR_SOLICIT: \
icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
break; \
case ND_NEIGHBOR_ADVERT: \
icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
break; \
case ND_REDIRECT: \
icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
break; \
} \
} while (/*CONSTCOND*/ 0)
extern int icmp6_rediraccept; /* accept/process redirects */
extern int icmp6_redirtimeout; /* cache time for redirect routes */
#endif /* _KERNEL */
#ifdef ICMP6_STRINGS
/* Info:
http://www.iana.org/assignments/icmpv6-parameters */
static const char * const icmp6_type_err[] = {
"reserved0", "unreach", "packet_too_big", "timxceed", "paramprob",
NULL
};
static const char * const icmp6_type_info[] = {
"echo", "echoreply",
"mcastlistenq", "mcastlistenrep", "mcastlistendone",
"rtsol", "rtadv", "neighsol", "neighadv", "redirect",
"routerrenum", "nodeinfoq", "nodeinfor", "invneighsol", "invneighrep",
"mcastlistenrep2", "haad_req", "haad_rep",
"mobile_psol", "mobile_padv", "cga_sol", "cga_adv",
"experimental150", "mcast_rtadv", "mcast_rtsol", "mcast_rtterm",
"fmipv6_msg", "rpl_control", NULL
};
static const char * const icmp6_code_none[] = { "none", NULL };
static const char * const icmp6_code_unreach[] = {
"noroute", "admin", "beyondscope", "addr", "port",
"srcaddr_policy", "reject_route", "source_route_err", NULL
};
static const char * const icmp6_code_timxceed[] = {
"intrans", "reass", NULL
};
static const char * const icmp6_code_paramprob[] = {
"hdr_field", "nxthdr_type", "option", NULL
};
/* not all informational icmps that have codes have a names array */
#endif
#endif /* !_NETINET_ICMP6_H_ */
