2
* Copyright (c) 1982, 1986, 1993
3
* The Regents of the University of California. All rights reserved.
5
* Redistribution and use in source and binary forms, with or without
6
* modification, are permitted provided that the following conditions
8
* 1. Redistributions of source code must retain the above copyright
9
* notice, this list of conditions and the following disclaimer.
10
* 2. Redistributions in binary form must reproduce the above copyright
11
* notice, this list of conditions and the following disclaimer in the
12
* documentation and/or other materials provided with the distribution.
13
* 3. All advertising materials mentioning features or use of this software
14
* must display the following acknowledgement:
15
* This product includes software developed by the University of
16
* California, Berkeley and its contributors.
17
* 4. Neither the name of the University nor the names of its contributors
18
* may be used to endorse or promote products derived from this software
19
* without specific prior written permission.
21
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33
* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
34
* ip_icmp.h,v 1.4 1995/05/30 08:09:43 rgrimes Exp
37
#ifndef _NETINET_IP_ICMP_H_
38
#define _NETINET_IP_ICMP_H_
41
* Interface Control Message Protocol Definitions.
42
* Per RFC 792, September 1981.
45
typedef u_int32_t n_time;
48
* Structure of an icmp header.
50
#ifdef PRAGMA_PACK_SUPPORTED
55
u_char icmp_type; /* type of message, see below */
56
u_char icmp_code; /* type sub code */
57
u_short icmp_cksum; /* ones complement cksum of struct */
59
u_char ih_pptr; /* ICMP_PARAMPROB */
60
struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
67
/* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
73
#define icmp_pptr icmp_hun.ih_pptr
74
#define icmp_gwaddr icmp_hun.ih_gwaddr
75
#define icmp_id icmp_hun.ih_idseq.icd_id
76
#define icmp_seq icmp_hun.ih_idseq.icd_seq
77
#define icmp_void icmp_hun.ih_void
78
#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
79
#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
88
/* options and then 64 bits of data */
93
#define icmp_otime icmp_dun.id_ts.its_otime
94
#define icmp_rtime icmp_dun.id_ts.its_rtime
95
#define icmp_ttime icmp_dun.id_ts.its_ttime
96
#define icmp_ip icmp_dun.id_ip.idi_ip
97
#define icmp_mask icmp_dun.id_mask
98
#define icmp_data icmp_dun.id_data
101
#ifdef PRAGMA_PACK_SUPPORTED
106
* Lower bounds on packet lengths for various types.
107
* For the error advice packets must first insure that the
108
* packet is large enought to contain the returned ip header.
109
* Only then can we do the check to see if 64 bits of packet
110
* data have been returned, since we need to check the returned
113
#define ICMP_MINLEN 8 /* abs minimum */
114
#define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
115
#define ICMP_MASKLEN 12 /* address mask */
116
#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
117
#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
118
/* N.B.: must separately check that ip_hl >= 5 */
121
* Definition of type and code field values.
123
#define ICMP_ECHOREPLY 0 /* echo reply */
124
#define ICMP_UNREACH 3 /* dest unreachable, codes: */
125
#define ICMP_UNREACH_NET 0 /* bad net */
126
#define ICMP_UNREACH_HOST 1 /* bad host */
127
#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
128
#define ICMP_UNREACH_PORT 3 /* bad port */
129
#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
130
#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
131
#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
132
#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
133
#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
134
#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
135
#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
136
#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
137
#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
138
#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
139
#define ICMP_REDIRECT 5 /* shorter route, codes: */
140
#define ICMP_REDIRECT_NET 0 /* for network */
141
#define ICMP_REDIRECT_HOST 1 /* for host */
142
#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
143
#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
144
#define ICMP_ECHO 8 /* echo service */
145
#define ICMP_ROUTERADVERT 9 /* router advertisement */
146
#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
147
#define ICMP_TIMXCEED 11 /* time exceeded, code: */
148
#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
149
#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
150
#define ICMP_PARAMPROB 12 /* ip header bad */
151
#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
152
#define ICMP_TSTAMP 13 /* timestamp request */
153
#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
154
#define ICMP_IREQ 15 /* information request */
155
#define ICMP_IREQREPLY 16 /* information reply */
156
#define ICMP_MASKREQ 17 /* address mask request */
157
#define ICMP_MASKREPLY 18 /* address mask reply */
159
#define ICMP_MAXTYPE 18
161
#define ICMP_INFOTYPE(type) \
162
((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
163
(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
164
(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
165
(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
166
(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
168
void icmp_input _P((struct mbuf *, int));
169
void icmp_error _P((struct mbuf *, u_char, u_char, int, char *));
170
void icmp_reflect _P((struct mbuf *));
added
removed
src/slirp/ip_icmp.h
