| /* $OpenBSD: ip_icmp.h,v 1.21 2005/07/31 03:30:55 pascoe Exp $ */ |
| /* $NetBSD: ip_icmp.h,v 1.10 1996/02/13 23:42:28 christos Exp $ */ |
| |
| /* |
| * 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_IP_ICMP_H_ |
| #define _NETINET_IP_ICMP_H_ |
| |
| #include <netinet/ip.h> |
| #include <sys/cdefs.h> |
| |
| __BEGIN_DECLS |
| |
| /* |
| * Interface Control Message Protocol Definitions. |
| * Per RFC 792, September 1981. |
| * RFC 950, August 1985. (Address Mask Request / Reply) |
| * RFC 1256, September 1991. (Router Advertisement and Solicitation) |
| * RFC 1108, November 1991. (Param Problem, Missing Req. Option) |
| * RFC 1393, January 1993. (Traceroute) |
| * RFC 1475, June 1993. (Datagram Conversion Error) |
| * RFC 1812, June 1995. (adm prohib, host precedence, precedence cutoff) |
| * RFC 2002, October 1996. (Mobility changes to Router Advertisement) |
| */ |
| |
| /* |
| * ICMP Router Advertisement data |
| */ |
| struct icmp_ra_addr { |
| uint32_t ira_addr; |
| uint32_t ira_preference; |
| }; |
| |
| /* |
| * Structure of an icmp header. |
| */ |
| struct icmp { |
| uint8_t icmp_type; /* type of message, see below */ |
| uint8_t icmp_code; /* type sub code */ |
| uint16_t icmp_cksum; /* ones complement cksum of struct */ |
| union { |
| uint8_t ih_pptr; /* ICMP_PARAMPROB */ |
| struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ |
| struct ih_idseq { |
| uint16_t icd_id; |
| uint16_t icd_seq; |
| } ih_idseq; |
| int32_t ih_void; |
| |
| /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ |
| struct ih_pmtu { |
| uint16_t ipm_void; |
| uint16_t ipm_nextmtu; |
| } ih_pmtu; |
| |
| struct ih_rtradv { |
| uint8_t irt_num_addrs; |
| uint8_t irt_wpa; |
| uint16_t irt_lifetime; |
| } ih_rtradv; |
| } icmp_hun; |
| #define icmp_pptr icmp_hun.ih_pptr |
| #define icmp_gwaddr icmp_hun.ih_gwaddr |
| #define icmp_id icmp_hun.ih_idseq.icd_id |
| #define icmp_seq icmp_hun.ih_idseq.icd_seq |
| #define icmp_void icmp_hun.ih_void |
| #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void |
| #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu |
| #define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs |
| #define icmp_wpa icmp_hun.ih_rtradv.irt_wpa |
| #define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime |
| union { |
| struct id_ts { |
| uint32_t its_otime; |
| uint32_t its_rtime; |
| uint32_t its_ttime; |
| } id_ts; |
| struct id_ip { |
| struct ip idi_ip; |
| /* options and then 64 bits of data */ |
| } id_ip; |
| uint32_t id_mask; |
| int8_t id_data[1]; |
| } icmp_dun; |
| #define icmp_otime icmp_dun.id_ts.its_otime |
| #define icmp_rtime icmp_dun.id_ts.its_rtime |
| #define icmp_ttime icmp_dun.id_ts.its_ttime |
| #define icmp_ip icmp_dun.id_ip.idi_ip |
| #define icmp_mask icmp_dun.id_mask |
| #define icmp_data icmp_dun.id_data |
| }; |
| |
| /* |
| * For IPv6 transition related ICMP errors. |
| */ |
| #define ICMP_V6ADVLENMIN (8 + sizeof(struct ip) + 40) |
| #define ICMP_V6ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 40) |
| |
| /* |
| * Lower bounds on packet lengths for various types. |
| * For the error advice packets must first insure that the |
| * packet is large enough to contain the returned ip header. |
| * Only then can we do the check to see if 64 bits of packet |
| * data have been returned, since we need to check the returned |
| * ip header length. |
| */ |
| #define ICMP_MINLEN 8 /* abs minimum */ |
| #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
| #define ICMP_MASKLEN 12 /* address mask */ |
| #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
| #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
| /* N.B.: must separately check that ip_hl >= 5 */ |
| |
| /* |
| * Definition of type and code field values. |
| * http://www.iana.org/assignments/icmp-parameters |
| */ |
| #define ICMP_ECHOREPLY 0 /* echo reply */ |
| #define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
| #define ICMP_UNREACH_NET 0 /* bad net */ |
| #define ICMP_UNREACH_HOST 1 /* bad host */ |
| #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
| #define ICMP_UNREACH_PORT 3 /* bad port */ |
| #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
| #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
| #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
| #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
| #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
| #define ICMP_UNREACH_NET_PROHIB 9 /* for crypto devs */ |
| #define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */ |
| #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
| #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
| #define ICMP_UNREACH_FILTER_PROHIB 13 /* prohibited access */ |
| #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* precedence violat'n*/ |
| #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* precedence cutoff */ |
| #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
| #define ICMP_REDIRECT 5 /* shorter route, codes: */ |
| #define ICMP_REDIRECT_NET 0 /* for network */ |
| #define ICMP_REDIRECT_HOST 1 /* for host */ |
| #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
| #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
| #define ICMP_ALTHOSTADDR 6 /* alternate host address */ |
| #define ICMP_ECHO 8 /* echo service */ |
| #define ICMP_ROUTERADVERT 9 /* router advertisement */ |
| #define ICMP_ROUTERADVERT_NORMAL 0 /* normal advertisement */ |
| #define ICMP_ROUTERADVERT_NOROUTE_COMMON 16 /* selective routing */ |
| #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
| #define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
| #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
| #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
| #define ICMP_PARAMPROB 12 /* ip header bad */ |
| #define ICMP_PARAMPROB_ERRATPTR 0 /* req. opt. absent */ |
| #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
| #define ICMP_PARAMPROB_LENGTH 2 /* bad length */ |
| #define ICMP_TSTAMP 13 /* timestamp request */ |
| #define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
| #define ICMP_IREQ 15 /* information request */ |
| #define ICMP_IREQREPLY 16 /* information reply */ |
| #define ICMP_MASKREQ 17 /* address mask request */ |
| #define ICMP_MASKREPLY 18 /* address mask reply */ |
| #define ICMP_TRACEROUTE 30 /* traceroute */ |
| #define ICMP_DATACONVERR 31 /* data conversion error */ |
| #define ICMP_MOBILE_REDIRECT 32 /* mobile host redirect */ |
| #define ICMP_IPV6_WHEREAREYOU 33 /* IPv6 where-are-you */ |
| #define ICMP_IPV6_IAMHERE 34 /* IPv6 i-am-here */ |
| #define ICMP_MOBILE_REGREQUEST 35 /* mobile registration req */ |
| #define ICMP_MOBILE_REGREPLY 36 /* mobile registration reply */ |
| #define ICMP_SKIP 39 /* SKIP */ |
| #define ICMP_PHOTURIS 40 /* Photuris */ |
| #define ICMP_PHOTURIS_UNKNOWN_INDEX 1 /* unknown sec index */ |
| #define ICMP_PHOTURIS_AUTH_FAILED 2 /* auth failed */ |
| #define ICMP_PHOTURIS_DECRYPT_FAILED 3 /* decrypt failed */ |
| |
| #define ICMP_MAXTYPE 40 |
| |
| #define ICMP_INFOTYPE(type) \ |
| ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
| (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
| (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
| (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
| (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
| |
| __END_DECLS |
| |
| #endif /* _NETINET_IP_ICMP_H_ */ |