Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / icmp6.h
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1/* @(#) $Header: /tcpdump/master/tcpdump/icmp6.h,v 1.16.2.1 2005/09/05 09:29:28 guy Exp $ (LBL) */
2/* $NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp $ */
3/* $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $ */
4
5/*
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project 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.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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
31 * SUCH DAMAGE.
32 */
33
34/*
35 * Copyright (c) 1982, 1986, 1993
36 * The Regents of the University of California. All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. All advertising materials mentioning features or use of this software
47 * must display the following acknowledgement:
48 * This product includes software developed by the University of
49 * California, Berkeley and its contributors.
50 * 4. Neither the name of the University nor the names of its contributors
51 * may be used to endorse or promote products derived from this software
52 * without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 *
66 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
67 */
68
69#ifndef _NETINET_ICMP6_H_
70#define _NETINET_ICMP6_H_
71
72struct icmp6_hdr {
73 u_int8_t icmp6_type; /* type field */
74 u_int8_t icmp6_code; /* code field */
75 u_int16_t icmp6_cksum; /* checksum field */
76 union {
77 u_int32_t icmp6_un_data32[1]; /* type-specific field */
78 u_int16_t icmp6_un_data16[2]; /* type-specific field */
79 u_int8_t icmp6_un_data8[4]; /* type-specific field */
80 } icmp6_dataun;
81};
82
83#define icmp6_data32 icmp6_dataun.icmp6_un_data32
84#define icmp6_data16 icmp6_dataun.icmp6_un_data16
85#define icmp6_data8 icmp6_dataun.icmp6_un_data8
86#define icmp6_pptr icmp6_data32[0] /* parameter prob */
87#define icmp6_mtu icmp6_data32[0] /* packet too big */
88#define icmp6_id icmp6_data16[0] /* echo request/reply */
89#define icmp6_seq icmp6_data16[1] /* echo request/reply */
90#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
91
92#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
93#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
94#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
95#define ICMP6_PARAM_PROB 4 /* ip6 header bad */
96
97#define ICMP6_ECHO_REQUEST 128 /* echo service */
98#define ICMP6_ECHO_REPLY 129 /* echo reply */
99#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
100#define MLD6_LISTENER_QUERY 130 /* multicast listener query */
101#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
102#define MLD6_LISTENER_REPORT 131 /* multicast listener report */
103#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
104#define MLD6_LISTENER_DONE 132 /* multicast listener done */
105
106#define ND_ROUTER_SOLICIT 133 /* router solicitation */
107#define ND_ROUTER_ADVERT 134 /* router advertisement */
108#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
109#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
110#define ND_REDIRECT 137 /* redirect */
111
112#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
113
114#define ICMP6_WRUREQUEST 139 /* who are you request */
115#define ICMP6_WRUREPLY 140 /* who are you reply */
116#define ICMP6_FQDN_QUERY 139 /* FQDN query */
117#define ICMP6_FQDN_REPLY 140 /* FQDN reply */
118#define ICMP6_NI_QUERY 139 /* node information request */
119#define ICMP6_NI_REPLY 140 /* node information reply */
120#define IND_SOLICIT 141 /* inverse neighbor solicitation */
121#define IND_ADVERT 142 /* inverse neighbor advertisement */
122
123#define ICMP6_V2_MEMBERSHIP_REPORT 143 /* v2 membership report */
124#define MLDV2_LISTENER_REPORT 143 /* v2 multicast listener report */
125#define ICMP6_HADISCOV_REQUEST 144
126#define ICMP6_HADISCOV_REPLY 145
127#define ICMP6_MOBILEPREFIX_SOLICIT 146
128#define ICMP6_MOBILEPREFIX_ADVERT 147
129
130#define MLD6_MTRACE_RESP 200 /* mtrace response(to sender) */
131#define MLD6_MTRACE 201 /* mtrace messages */
132
133#define ICMP6_MAXTYPE 201
134
135#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
136#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
137#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
138#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
139#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
140#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
141
142#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
143#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
144
145#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
146#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
147#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
148
149#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
150
151#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
152#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
153#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
154
155#define ICMP6_NI_SUCCESS 0 /* node information successful reply */
156#define ICMP6_NI_REFUSED 1 /* node information request is refused */
157#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
158
159#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
160#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
161#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
162
163/* Used in kernel only */
164#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
165#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
166
167/*
168 * Multicast Listener Discovery
169 */
170struct mld6_hdr {
171 struct icmp6_hdr mld6_hdr;
172 struct in6_addr mld6_addr; /* multicast address */
173};
174
175#define mld6_type mld6_hdr.icmp6_type
176#define mld6_code mld6_hdr.icmp6_code
177#define mld6_cksum mld6_hdr.icmp6_cksum
178#define mld6_maxdelay mld6_hdr.icmp6_data16[0]
179#define mld6_reserved mld6_hdr.icmp6_data16[1]
180
181#define MLD_MINLEN 24
182#define MLDV2_MINLEN 28
183
184/*
185 * Neighbor Discovery
186 */
187
188struct nd_router_solicit { /* router solicitation */
189 struct icmp6_hdr nd_rs_hdr;
190 /* could be followed by options */
191};
192
193#define nd_rs_type nd_rs_hdr.icmp6_type
194#define nd_rs_code nd_rs_hdr.icmp6_code
195#define nd_rs_cksum nd_rs_hdr.icmp6_cksum
196#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
197
198struct nd_router_advert { /* router advertisement */
199 struct icmp6_hdr nd_ra_hdr;
200 u_int32_t nd_ra_reachable; /* reachable time */
201 u_int32_t nd_ra_retransmit; /* retransmit timer */
202 /* could be followed by options */
203};
204
205#define nd_ra_type nd_ra_hdr.icmp6_type
206#define nd_ra_code nd_ra_hdr.icmp6_code
207#define nd_ra_cksum nd_ra_hdr.icmp6_cksum
208#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
209#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
210#define ND_RA_FLAG_MANAGED 0x80
211#define ND_RA_FLAG_OTHER 0x40
212#define ND_RA_FLAG_HOME_AGENT 0x20
213
214/*
215 * Router preference values based on draft-draves-ipngwg-router-selection-01.
216 * These are non-standard definitions.
217 */
218#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
219
220#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
221#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
222#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
223#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
224
225#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
226
227struct nd_neighbor_solicit { /* neighbor solicitation */
228 struct icmp6_hdr nd_ns_hdr;
229 struct in6_addr nd_ns_target; /*target address */
230 /* could be followed by options */
231};
232
233#define nd_ns_type nd_ns_hdr.icmp6_type
234#define nd_ns_code nd_ns_hdr.icmp6_code
235#define nd_ns_cksum nd_ns_hdr.icmp6_cksum
236#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
237
238struct nd_neighbor_advert { /* neighbor advertisement */
239 struct icmp6_hdr nd_na_hdr;
240 struct in6_addr nd_na_target; /* target address */
241 /* could be followed by options */
242};
243
244#define nd_na_type nd_na_hdr.icmp6_type
245#define nd_na_code nd_na_hdr.icmp6_code
246#define nd_na_cksum nd_na_hdr.icmp6_cksum
247#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
248
249#define ND_NA_FLAG_ROUTER 0x80000000
250#define ND_NA_FLAG_SOLICITED 0x40000000
251#define ND_NA_FLAG_OVERRIDE 0x20000000
252
253struct nd_redirect { /* redirect */
254 struct icmp6_hdr nd_rd_hdr;
255 struct in6_addr nd_rd_target; /* target address */
256 struct in6_addr nd_rd_dst; /* destination address */
257 /* could be followed by options */
258};
259
260#define nd_rd_type nd_rd_hdr.icmp6_type
261#define nd_rd_code nd_rd_hdr.icmp6_code
262#define nd_rd_cksum nd_rd_hdr.icmp6_cksum
263#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
264
265struct nd_opt_hdr { /* Neighbor discovery option header */
266 u_int8_t nd_opt_type;
267 u_int8_t nd_opt_len;
268 /* followed by option specific data*/
269};
270
271#define ND_OPT_SOURCE_LINKADDR 1
272#define ND_OPT_TARGET_LINKADDR 2
273#define ND_OPT_PREFIX_INFORMATION 3
274#define ND_OPT_REDIRECTED_HEADER 4
275#define ND_OPT_MTU 5
276#define ND_OPT_ADVINTERVAL 7
277#define ND_OPT_HOMEAGENT_INFO 8
278#define ND_OPT_ROUTE_INFO 9 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
279
280
281struct nd_opt_prefix_info { /* prefix information */
282 u_int8_t nd_opt_pi_type;
283 u_int8_t nd_opt_pi_len;
284 u_int8_t nd_opt_pi_prefix_len;
285 u_int8_t nd_opt_pi_flags_reserved;
286 u_int8_t nd_opt_pi_valid_time[4];
287 u_int8_t nd_opt_pi_preferred_time[4];
288 u_int8_t nd_opt_pi_reserved2[4];
289 struct in6_addr nd_opt_pi_prefix;
290};
291
292#define ND_OPT_PI_FLAG_ONLINK 0x80
293#define ND_OPT_PI_FLAG_AUTO 0x40
294#define ND_OPT_PI_FLAG_ROUTER 0x20 /*2292bis*/
295
296struct nd_opt_rd_hdr { /* redirected header */
297 u_int8_t nd_opt_rh_type;
298 u_int8_t nd_opt_rh_len;
299 u_int16_t nd_opt_rh_reserved1;
300 u_int32_t nd_opt_rh_reserved2;
301 /* followed by IP header and data */
302};
303
304struct nd_opt_mtu { /* MTU option */
305 u_int8_t nd_opt_mtu_type;
306 u_int8_t nd_opt_mtu_len;
307 u_int16_t nd_opt_mtu_reserved;
308 u_int32_t nd_opt_mtu_mtu;
309};
310
311struct nd_opt_advinterval { /* Advertisement interval option */
312 u_int8_t nd_opt_adv_type;
313 u_int8_t nd_opt_adv_len;
314 u_int16_t nd_opt_adv_reserved;
315 u_int32_t nd_opt_adv_interval;
316};
317
318struct nd_opt_homeagent_info { /* Home Agent info */
319 u_int8_t nd_opt_hai_type;
320 u_int8_t nd_opt_hai_len;
321 u_int16_t nd_opt_hai_reserved;
322 int16_t nd_opt_hai_preference;
323 u_int16_t nd_opt_hai_lifetime;
324};
325
326struct nd_opt_route_info { /* route info */
327 u_int8_t nd_opt_rti_type;
328 u_int8_t nd_opt_rti_len;
329 u_int8_t nd_opt_rti_prefixlen;
330 u_int8_t nd_opt_rti_flags;
331 u_int32_t nd_opt_rti_lifetime;
332 /* prefix follows */
333};
334
335/*
336 * icmp6 namelookup
337 */
338
339struct icmp6_namelookup {
340 struct icmp6_hdr icmp6_nl_hdr;
341 u_int8_t icmp6_nl_nonce[8];
342 int32_t icmp6_nl_ttl;
343#if 0
344 u_int8_t icmp6_nl_len;
345 u_int8_t icmp6_nl_name[3];
346#endif
347 /* could be followed by options */
348};
349
350/*
351 * icmp6 node information
352 */
353struct icmp6_nodeinfo {
354 struct icmp6_hdr icmp6_ni_hdr;
355 u_int8_t icmp6_ni_nonce[8];
356 /* could be followed by reply data */
357};
358
359#define ni_type icmp6_ni_hdr.icmp6_type
360#define ni_code icmp6_ni_hdr.icmp6_code
361#define ni_cksum icmp6_ni_hdr.icmp6_cksum
362#define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
363#define ni_flags icmp6_ni_hdr.icmp6_data16[1]
364
365#define NI_QTYPE_NOOP 0 /* NOOP */
366#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
367#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
368#define NI_QTYPE_DNSNAME 2 /* DNS Name */
369#define NI_QTYPE_NODEADDR 3 /* Node Addresses */
370#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
371
372/* network endian */
373#define NI_SUPTYPE_FLAG_COMPRESS ((u_int16_t)htons(0x1))
374#define NI_FQDN_FLAG_VALIDTTL ((u_int16_t)htons(0x1))
375
376/* network endian */
377#define NI_NODEADDR_FLAG_TRUNCATE ((u_int16_t)htons(0x1))
378#define NI_NODEADDR_FLAG_ALL ((u_int16_t)htons(0x2))
379#define NI_NODEADDR_FLAG_COMPAT ((u_int16_t)htons(0x4))
380#define NI_NODEADDR_FLAG_LINKLOCAL ((u_int16_t)htons(0x8))
381#define NI_NODEADDR_FLAG_SITELOCAL ((u_int16_t)htons(0x10))
382#define NI_NODEADDR_FLAG_GLOBAL ((u_int16_t)htons(0x20))
383#define NI_NODEADDR_FLAG_ANYCAST ((u_int16_t)htons(0x40)) /* just experimental. not in spec */
384
385struct ni_reply_fqdn {
386 u_int32_t ni_fqdn_ttl; /* TTL */
387 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
388 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
389};
390
391/*
392 * Router Renumbering. as router-renum-08.txt
393 */
394struct icmp6_router_renum { /* router renumbering header */
395 struct icmp6_hdr rr_hdr;
396 u_int8_t rr_segnum;
397 u_int8_t rr_flags;
398 u_int16_t rr_maxdelay;
399 u_int32_t rr_reserved;
400};
401#define ICMP6_RR_FLAGS_TEST 0x80
402#define ICMP6_RR_FLAGS_REQRESULT 0x40
403#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
404#define ICMP6_RR_FLAGS_SPECSITE 0x10
405#define ICMP6_RR_FLAGS_PREVDONE 0x08
406
407#define rr_type rr_hdr.icmp6_type
408#define rr_code rr_hdr.icmp6_code
409#define rr_cksum rr_hdr.icmp6_cksum
410#define rr_seqnum rr_hdr.icmp6_data32[0]
411
412struct rr_pco_match { /* match prefix part */
413 u_int8_t rpm_code;
414 u_int8_t rpm_len;
415 u_int8_t rpm_ordinal;
416 u_int8_t rpm_matchlen;
417 u_int8_t rpm_minlen;
418 u_int8_t rpm_maxlen;
419 u_int16_t rpm_reserved;
420 struct in6_addr rpm_prefix;
421};
422
423#define RPM_PCO_ADD 1
424#define RPM_PCO_CHANGE 2
425#define RPM_PCO_SETGLOBAL 3
426#define RPM_PCO_MAX 4
427
428struct rr_pco_use { /* use prefix part */
429 u_int8_t rpu_uselen;
430 u_int8_t rpu_keeplen;
431 u_int8_t rpu_ramask;
432 u_int8_t rpu_raflags;
433 u_int32_t rpu_vltime;
434 u_int32_t rpu_pltime;
435 u_int32_t rpu_flags;
436 struct in6_addr rpu_prefix;
437};
438#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
439#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
440
441/* network endian */
442#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME ((u_int32_t)htonl(0x80000000))
443#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME ((u_int32_t)htonl(0x40000000))
444
445struct rr_result { /* router renumbering result message */
446 u_int16_t rrr_flags;
447 u_int8_t rrr_ordinal;
448 u_int8_t rrr_matchedlen;
449 u_int32_t rrr_ifid;
450 struct in6_addr rrr_prefix;
451};
452/* network endian */
453#define ICMP6_RR_RESULT_FLAGS_OOB ((u_int16_t)htons(0x0002))
454#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN ((u_int16_t)htons(0x0001))
455
456#endif /* not _NETINET_ICMP6_H_ */