/* * 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. */ #ifndef NETINET_IP_ICMP_H #define NETINET_IP_ICMP_H #include #include #include #include struct icmp { uint8_t icmp_type; uint8_t icmp_code; uint16_t icmp_cksum; union { uint8_t ih_pptr; struct in_addr ih_gwaddr; struct ih_idseq { uint16_t icd_id; uint16_t icd_seq; } ih_idseq; int32_t ih_void; /* ICMP_UNREACH_NEEDFRAG (RFC 1191) */ struct ih_pmtu { uint16_t ipm_void; uint16_t ipm_nextmtu; } ih_pmtu; } icmp_hun; 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; } id_ip; uint32_t id_mask; char id_data[1]; } icmp_dun; }; #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_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 #define ICMP_MINLEN 8 /* absolute minimum length */ #define ICMP_ADVLENMIN (8 + sizeof(struct ip) + 8) #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) /* 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_SOURCEQUENCH 4 /* packet lost, slow down */ #define ICMP_REDIRECT 5 /* shorter route, codes: */ #define ICMP_ALTHOSTADDR 6 /* alternate host address */ #define ICMP_ECHO 8 /* echo service */ #define ICMP_ROUTERADVERT 9 /* router advertisement */ #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ #define ICMP_TIMXCEED 11 /* time exceeded, code: */ #define ICMP_PARAMPROB 12 /* ip header bad */ #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_MAXTYPE 40 #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_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_ROUTERADVERT_NORMAL 0 /* normal advertisement */ #define ICMP_ROUTERADVERT_NOROUTE_COMMON 16 /* selective routing */ #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ #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_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_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) #endif /* NETINET_IP_ICMP_H */