| /* Copyright (C) 1991-2021 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, see |
| <https://www.gnu.org/licenses/>. */ |
| |
| #ifndef __NETINET_IP_ICMP_H |
| #define __NETINET_IP_ICMP_H 1 |
| |
| #include <sys/types.h> |
| #include <stdint.h> |
| |
| __BEGIN_DECLS |
| |
| struct icmphdr |
| { |
| uint8_t type; /* message type */ |
| uint8_t code; /* type sub-code */ |
| uint16_t checksum; |
| union |
| { |
| struct |
| { |
| uint16_t id; |
| uint16_t sequence; |
| } echo; /* echo datagram */ |
| uint32_t gateway; /* gateway address */ |
| struct |
| { |
| uint16_t __glibc_reserved; |
| uint16_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_MISC |
| /* |
| * 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 |
| { |
| uint32_t ira_addr; |
| uint32_t ira_preference; |
| }; |
| |
| struct icmp |
| { |
| uint8_t icmp_type; /* type of message, see below */ |
| uint8_t icmp_code; /* type sub code */ |
| uint16_t icmp_cksum; /* ones complement checksum of struct */ |
| union |
| { |
| unsigned char ih_pptr; /* ICMP_PARAMPROB */ |
| struct in_addr ih_gwaddr; /* gateway address */ |
| struct ih_idseq /* echo datagram */ |
| { |
| uint16_t icd_id; |
| uint16_t icd_seq; |
| } ih_idseq; |
| uint32_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 |
| { |
| uint32_t its_otime; |
| uint32_t its_rtime; |
| uint32_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; |
| uint32_t id_mask; |
| uint8_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_MISC */ |
| |
| __END_DECLS |
| |
| #endif /* netinet/ip_icmp.h */ |