ip_icmp.h
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- /* Copyright (C) 1991, 92, 93, 95, 96, 97, 99 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #ifndef __NETINET_IP_ICMP_H
- #define __NETINET_IP_ICMP_H 1
- #include <sys/cdefs.h>
- #include <sys/types.h>
- __BEGIN_DECLS
- struct icmphdr
- {
- u_int8_t type; /* message type */
- u_int8_t code; /* type sub-code */
- u_int16_t checksum;
- union
- {
- struct
- {
- u_int16_t id;
- u_int16_t sequence;
- } echo; /* echo datagram */
- u_int32_t gateway; /* gateway address */
- struct
- {
- u_int16_t __unused;
- u_int16_t mtu;
- } frag; /* path mtu discovery */
- } un;
- };
- #define ICMP_ECHOREPLY 0 /* Echo Reply */
- #define ICMP_DEST_UNREACH 3 /* Destination Unreachable */
- #define ICMP_SOURCE_QUENCH 4 /* Source Quench */
- #define ICMP_REDIRECT 5 /* Redirect (change route) */
- #define ICMP_ECHO 8 /* Echo Request */
- #define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */
- #define ICMP_PARAMETERPROB 12 /* Parameter Problem */
- #define ICMP_TIMESTAMP 13 /* Timestamp Request */
- #define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */
- #define ICMP_INFO_REQUEST 15 /* Information Request */
- #define ICMP_INFO_REPLY 16 /* Information Reply */
- #define ICMP_ADDRESS 17 /* Address Mask Request */
- #define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */
- #define NR_ICMP_TYPES 18
- /* Codes for UNREACH. */
- #define ICMP_NET_UNREACH 0 /* Network Unreachable */
- #define ICMP_HOST_UNREACH 1 /* Host Unreachable */
- #define ICMP_PROT_UNREACH 2 /* Protocol Unreachable */
- #define ICMP_PORT_UNREACH 3 /* Port Unreachable */
- #define ICMP_FRAG_NEEDED 4 /* Fragmentation Needed/DF set */
- #define ICMP_SR_FAILED 5 /* Source Route failed */
- #define ICMP_NET_UNKNOWN 6
- #define ICMP_HOST_UNKNOWN 7
- #define ICMP_HOST_ISOLATED 8
- #define ICMP_NET_ANO 9
- #define ICMP_HOST_ANO 10
- #define ICMP_NET_UNR_TOS 11
- #define ICMP_HOST_UNR_TOS 12
- #define ICMP_PKT_FILTERED 13 /* Packet filtered */
- #define ICMP_PREC_VIOLATION 14 /* Precedence violation */
- #define ICMP_PREC_CUTOFF 15 /* Precedence cut off */
- #define NR_ICMP_UNREACH 15 /* instead of hardcoding immediate value */
- /* Codes for REDIRECT. */
- #define ICMP_REDIR_NET 0 /* Redirect Net */
- #define ICMP_REDIR_HOST 1 /* Redirect Host */
- #define ICMP_REDIR_NETTOS 2 /* Redirect Net for TOS */
- #define ICMP_REDIR_HOSTTOS 3 /* Redirect Host for TOS */
- /* Codes for TIME_EXCEEDED. */
- #define ICMP_EXC_TTL 0 /* TTL count exceeded */
- #define ICMP_EXC_FRAGTIME 1 /* Fragment Reass time exceeded */
- #ifdef __USE_BSD
- /*
- * 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.
- * 4. 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
- */
- #include <netinet/in.h>
- #include <netinet/ip.h>
- /*
- * Internal of an ICMP Router Advertisement
- */
- struct icmp_ra_addr
- {
- u_int32_t ira_addr;
- u_int32_t ira_preference;
- };
- struct icmp
- {
- u_int8_t icmp_type; /* type of message, see below */
- u_int8_t icmp_code; /* type sub code */
- u_int16_t icmp_cksum; /* ones complement checksum of struct */
- union
- {
- u_char ih_pptr; /* ICMP_PARAMPROB */
- struct in_addr ih_gwaddr; /* gateway address */
- struct ih_idseq /* echo datagram */
- {
- u_int16_t icd_id;
- u_int16_t icd_seq;
- } ih_idseq;
- u_int32_t ih_void;
- /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
- struct ih_pmtu
- {
- u_int16_t ipm_void;
- u_int16_t ipm_nextmtu;
- } ih_pmtu;
- struct ih_rtradv
- {
- u_int8_t irt_num_addrs;
- u_int8_t irt_wpa;
- u_int16_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
- {
- u_int32_t its_otime;
- u_int32_t its_rtime;
- u_int32_t its_ttime;
- } id_ts;
- struct
- {
- struct ip idi_ip;
- /* options and then 64 bits of data */
- } id_ip;
- struct icmp_ra_addr id_radv;
- u_int32_t id_mask;
- u_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_radv icmp_dun.id_radv
- #define icmp_mask icmp_dun.id_mask
- #define icmp_data icmp_dun.id_data
- };
- /*
- * 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 */
- #ifndef _IP_VHL
- #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
- /* N.B.: must separately check that ip_hl >= 5 */
- #else
- #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8)
- /* N.B.: must separately check that header length >= 5 */
- #endif
- /* Definition of type and code fields. */
- /* defined above: ICMP_ECHOREPLY, ICMP_REDIRECT, ICMP_ECHO */
- #define ICMP_UNREACH 3 /* dest unreachable, codes: */
- #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
- #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_MAXTYPE 18
- /* UNREACH 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 /* net denied */
- #define ICMP_UNREACH_HOST_PROHIB 10 /* host denied */
- #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
- #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
- #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */
- #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */
- #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */
- /* REDIRECT 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 */
- /* TIMEXCEED codes */
- #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
- #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
- /* PARAMPROB code */
- #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
- #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 /* __USE_BSD */
- __END_DECLS
- #endif /* netinet/ip_icmp.h */