| /* | |
| * 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 | |
| * ip_icmp.h,v 1.4 1995/05/30 08:09:43 rgrimes Exp | |
| */ | |
| #ifndef _NETINET_IP_ICMP_H_ | |
| #define _NETINET_IP_ICMP_H_ | |
| /* | |
| * Interface Control Message Protocol Definitions. | |
| * Per RFC 792, September 1981. | |
| */ | |
| typedef uint32_t n_time; | |
| /* | |
| * Structure of an icmp header. | |
| */ | |
| struct icmp { | |
| u_char icmp_type; /* type of message, see below */ | |
| u_char icmp_code; /* type sub code */ | |
| u_short icmp_cksum; /* ones complement cksum of struct */ | |
| union { | |
| u_char ih_pptr; /* ICMP_PARAMPROB */ | |
| struct in_addr ih_gwaddr; /* ICMP_REDIRECT */ | |
| struct ih_idseq { | |
| u_short icd_id; | |
| u_short icd_seq; | |
| } ih_idseq; | |
| int ih_void; | |
| /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ | |
| struct ih_pmtu { | |
| u_short ipm_void; | |
| u_short ipm_nextmtu; | |
| } ih_pmtu; | |
| } 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 | |
| union { | |
| struct id_ts { | |
| n_time its_otime; | |
| n_time its_rtime; | |
| n_time its_ttime; | |
| } id_ts; | |
| struct id_ip { | |
| struct ip idi_ip; | |
| /* options and then 64 bits of data */ | |
| } id_ip; | |
| uint32_t id_mask; | |
| char 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 | |
| }; | |
| /* | |
| * Lower bounds on packet lengths for various types. | |
| * For the error advice packets must first ensure 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. | |
| */ | |
| #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 /* prohibited access */ | |
| #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_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_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_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_OPTABSENT 1 /* req. opt. absent */ | |
| #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 | |
| #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) | |
| void icmp_init(Slirp *slirp); | |
| void icmp_cleanup(Slirp *slirp); | |
| void icmp_input(struct mbuf *, int); | |
| void icmp_error(struct mbuf *msrc, u_char type, u_char code, int minsize, | |
| const char *message); | |
| void icmp_reflect(struct mbuf *); | |
| void icmp_receive(struct socket *so); | |
| void icmp_detach(struct socket *so); | |
| #endif |