/* $NetBSD: icmp6.h,v 1.47 2013/07/01 12:43:15 christos 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 <netinet/in.h> /* android-added: glibc source compatibility. */
#include <sys/cdefs.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;
} __packed;
#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 */
#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 */
#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_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 */
} __packed;
/* 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 */
} __packed;
#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 */
} __packed;
#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
/*
* 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 */
} __packed;
#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 */
} __packed;
#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]
#define ND_NA_FLAG_ROUTER 0x80
#define ND_NA_FLAG_SOLICITED 0x40
#define ND_NA_FLAG_OVERRIDE 0x20
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 */
} __packed;
#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*/
} __packed;
#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_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 */
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;
} __packed;
#define ND_OPT_PI_FLAG_ONLINK 0x80
#define ND_OPT_PI_FLAG_AUTO 0x40
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 */
} __packed;
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;
} __packed;
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 */
} __packed;
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 */
} __packed;
/*
* 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 */
} __packed;
/*
* 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 */
} __packed;
/*
* BEGIN android-removed: glibc doesn't have these, and external/ping declares them itself.
#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]
* END android-removed
*/
#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 */
#define NI_SUPTYPE_FLAG_COMPRESS 0x0100
#define NI_FQDN_FLAG_VALIDTTL 0x0100
#ifdef NAME_LOOKUPS_04
#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 */
#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
#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
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 */
} __packed;
/*
* 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;
} __packed;
#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;
} __packed;
#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;
} __packed;
#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
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;
} __packed;
#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
/*
* icmp6 filter structures.
*/
struct icmp6_filter {
u_int32_t icmp6_filt[8];
};
/*
* BEGIN android-changed
* Linux and *BSD kernels use opposite values to indicate pass/block in ICMPv6
* filters, and assign a different value to the ICMP6_FILTER sockopt.
*/
#define ICMP6_FILTER 1
#define ICMP6_FILTER_SETPASSALL(filterp) \
(void)memset(filterp, 0x00, sizeof(struct icmp6_filter))
#define ICMP6_FILTER_SETBLOCKALL(filterp) \
(void)memset(filterp, 0xff, 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)
/*
* END android-changed
*/
#endif /* !_NETINET_ICMP6_H_ */