Bump __DragonFly_version for recent updates.
[dragonfly.git] / sys / netinet / ip_icmp.h
blob72d0b6b98fb02a1ba8140b0de3e46d7d0d00bbde
1 /*
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
7 * are met:
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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
29 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/netinet/ip_icmp.h,v 1.16 1999/12/29 04:41:01 peter Exp $
31 * $DragonFly: src/sys/netinet/ip_icmp.h,v 1.8 2006/05/20 02:42:12 dillon Exp $
34 #ifndef _NETINET_IP_ICMP_H_
35 #define _NETINET_IP_ICMP_H_
37 #ifndef _SYS_TYPES_H_
38 #include <sys/types.h>
39 #endif
40 #ifndef _NETINET_IN_SYSTM_H_
41 #include <netinet/in_systm.h>
42 #endif
43 #ifndef _NETINET_IN_H_
44 #include <netinet/in.h>
45 #endif
46 #ifndef _NETINET_IP_H_
47 #include <netinet/ip.h>
48 #endif
51 * Interface Control Message Protocol Definitions.
52 * Per RFC 792, September 1981.
56 * Internal of an ICMP Router Advertisement
58 struct icmp_ra_addr {
59 u_int32_t ira_addr;
60 u_int32_t ira_preference;
64 * Structure of an icmp header.
66 struct icmp {
67 u_char icmp_type; /* type of message, see below */
68 u_char icmp_code; /* type sub code */
69 u_short icmp_cksum; /* ones complement cksum of struct */
70 union {
71 u_char ih_pptr; /* ICMP_PARAMPROB */
72 struct in_addr ih_gwaddr; /* ICMP_REDIRECT */
73 struct ih_idseq {
74 n_short icd_id;
75 n_short icd_seq;
76 } ih_idseq;
77 int ih_void;
79 /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */
80 struct ih_pmtu {
81 n_short ipm_void;
82 n_short ipm_nextmtu;
83 } ih_pmtu;
85 struct ih_rtradv {
86 u_char irt_num_addrs;
87 u_char irt_wpa;
88 u_int16_t irt_lifetime;
89 } ih_rtradv;
90 } icmp_hun;
91 #define icmp_pptr icmp_hun.ih_pptr
92 #define icmp_gwaddr icmp_hun.ih_gwaddr
93 #define icmp_id icmp_hun.ih_idseq.icd_id
94 #define icmp_seq icmp_hun.ih_idseq.icd_seq
95 #define icmp_void icmp_hun.ih_void
96 #define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
97 #define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
98 #define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
99 #define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
100 #define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
101 union {
102 struct id_ts {
103 n_time its_otime;
104 n_time its_rtime;
105 n_time its_ttime;
106 } id_ts;
107 struct id_ip {
108 struct ip idi_ip;
109 /* options and then 64 bits of data */
110 } id_ip;
111 struct icmp_ra_addr id_radv;
112 u_int32_t id_mask;
113 char id_data[1];
114 } icmp_dun;
115 #define icmp_otime icmp_dun.id_ts.its_otime
116 #define icmp_rtime icmp_dun.id_ts.its_rtime
117 #define icmp_ttime icmp_dun.id_ts.its_ttime
118 #define icmp_ip icmp_dun.id_ip.idi_ip
119 #define icmp_radv icmp_dun.id_radv
120 #define icmp_mask icmp_dun.id_mask
121 #define icmp_data icmp_dun.id_data
125 * Lower bounds on packet lengths for various types.
126 * For the error advice packets must first insure that the
127 * packet is large enough to contain the returned ip header.
128 * Only then can we do the check to see if 64 bits of packet
129 * data have been returned, since we need to check the returned
130 * ip header length.
132 #define ICMP_MINLEN 8 /* abs minimum */
133 #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */
134 #define ICMP_MASKLEN 12 /* address mask */
135 #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */
136 #ifndef _IP_VHL
137 #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
138 /* N.B.: must separately check that ip_hl >= 5 */
139 #else
140 #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8)
141 /* N.B.: must separately check that header length >= 5 */
142 #endif
145 * Definition of type and code field values.
147 #define ICMP_ECHOREPLY 0 /* echo reply */
148 #define ICMP_UNREACH 3 /* dest unreachable, codes: */
149 #define ICMP_UNREACH_NET 0 /* bad net */
150 #define ICMP_UNREACH_HOST 1 /* bad host */
151 #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
152 #define ICMP_UNREACH_PORT 3 /* bad port */
153 #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
154 #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
155 #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
156 #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
157 #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
158 #define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
159 #define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
160 #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
161 #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
162 #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */
163 #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */
164 #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */
165 #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
166 #define ICMP_REDIRECT 5 /* shorter route, codes: */
167 #define ICMP_REDIRECT_NET 0 /* for network */
168 #define ICMP_REDIRECT_HOST 1 /* for host */
169 #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
170 #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
171 #define ICMP_ALTHOSTADDR 6 /* alternate host address */
172 #define ICMP_ECHO 8 /* echo service */
173 #define ICMP_ROUTERADVERT 9 /* router advertisement */
174 #define ICMP_ROUTERADVERT_NORMAL 0 /* normal advertisement */
175 #define ICMP_ROUTERADVERT_NOROUTE_COMMON 16 /* selective routing */
176 #define ICMP_ROUTERSOLICIT 10 /* router solicitation */
177 #define ICMP_TIMXCEED 11 /* time exceeded, code: */
178 #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
179 #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
180 #define ICMP_PARAMPROB 12 /* ip header bad */
181 #define ICMP_PARAMPROB_ERRATPTR 0 /* error at param ptr */
182 #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
183 #define ICMP_PARAMPROB_LENGTH 2 /* bad length */
184 #define ICMP_TSTAMP 13 /* timestamp request */
185 #define ICMP_TSTAMPREPLY 14 /* timestamp reply */
186 #define ICMP_IREQ 15 /* information request */
187 #define ICMP_IREQREPLY 16 /* information reply */
188 #define ICMP_MASKREQ 17 /* address mask request */
189 #define ICMP_MASKREPLY 18 /* address mask reply */
190 #define ICMP_TRACEROUTE 30 /* traceroute */
191 #define ICMP_DATACONVERR 31 /* data conversion error */
192 #define ICMP_MOBILE_REDIRECT 32 /* mobile host redirect */
193 #define ICMP_IPV6_WHEREAREYOU 33 /* IPv6 where-are-you */
194 #define ICMP_IPV6_IAMHERE 34 /* IPv6 i-am-here */
195 #define ICMP_MOBILE_REGREQUEST 35 /* mobile registration req */
196 #define ICMP_MOBILE_REGREPLY 36 /* mobile registreation reply */
197 #define ICMP_SKIP 39 /* SKIP */
198 #define ICMP_PHOTURIS 40 /* Photuris */
199 #define ICMP_PHOTURIS_UNKNOWN_INDEX 1 /* unknown sec index */
200 #define ICMP_PHOTURIS_AUTH_FAILED 2 /* auth failed */
201 #define ICMP_PHOTURIS_DECRYPT_FAILED 3 /* decrypt failed */
203 #define ICMP_MAXTYPE 40
205 #define ICMP_INFOTYPE(type) \
206 ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
207 (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
208 (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
209 (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
210 (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
212 #ifdef _KERNEL
213 void icmp_error (struct mbuf *, int, int, n_long, int);
214 int icmp_input (struct mbuf **, int *, int);
215 int ip_next_mtu (int, int);
216 #endif
218 #endif