214 lines
8.3 KiB
C
214 lines
8.3 KiB
C
/* $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_ */
|