FreeBSD/Linux Kernel Cross Reference
sys/netinet/icmp6.h
1 /* $NetBSD: icmp6.h,v 1.35 2006/03/07 18:15:28 wiz Exp $ */
2 /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $ */
3
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. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
63 */
64
65 #ifndef _NETINET_ICMP6_H_
66 #define _NETINET_ICMP6_H_
67
68 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
69 - sizeof(struct icmp6_hdr) */
70
71 struct icmp6_hdr {
72 u_int8_t icmp6_type; /* type field */
73 u_int8_t icmp6_code; /* code field */
74 u_int16_t icmp6_cksum; /* checksum field */
75 union {
76 u_int32_t icmp6_un_data32[1]; /* type-specific field */
77 u_int16_t icmp6_un_data16[2]; /* type-specific field */
78 u_int8_t icmp6_un_data8[4]; /* type-specific field */
79 } icmp6_dataun;
80 } __attribute__((__packed__));
81
82 #define icmp6_data32 icmp6_dataun.icmp6_un_data32
83 #define icmp6_data16 icmp6_dataun.icmp6_un_data16
84 #define icmp6_data8 icmp6_dataun.icmp6_un_data8
85 #define icmp6_pptr icmp6_data32[0] /* parameter prob */
86 #define icmp6_mtu icmp6_data32[0] /* packet too big */
87 #define icmp6_id icmp6_data16[0] /* echo request/reply */
88 #define icmp6_seq icmp6_data16[1] /* echo request/reply */
89 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
90
91 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
92 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
93 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
94 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
95
96 #define ICMP6_ECHO_REQUEST 128 /* echo service */
97 #define ICMP6_ECHO_REPLY 129 /* echo reply */
98 #define MLD_LISTENER_QUERY 130 /* multicast listener query */
99 #define MLD_LISTENER_REPORT 131 /* multicast listener report */
100 #define MLD_LISTENER_DONE 132 /* multicast listener done */
101
102 /* RFC2292 decls */
103 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
104 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
105 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
106
107 #ifndef _KERNEL
108 /* the followings are for backward compatibility to old KAME apps. */
109 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
110 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
111 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE
112 #endif
113
114 #define ND_ROUTER_SOLICIT 133 /* router solicitation */
115 #define ND_ROUTER_ADVERT 134 /* router advertisement */
116 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
117 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
118 #define ND_REDIRECT 137 /* redirect */
119
120 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
121
122 #define ICMP6_WRUREQUEST 139 /* who are you request */
123 #define ICMP6_WRUREPLY 140 /* who are you reply */
124 #define ICMP6_FQDN_QUERY 139 /* FQDN query */
125 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
126 #define ICMP6_NI_QUERY 139 /* node information request */
127 #define ICMP6_NI_REPLY 140 /* node information reply */
128
129 /* The definitions below are experimental. TBA */
130 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */
131 #define MLD_MTRACE 201 /* mtrace messages */
132
133 #ifndef _KERNEL
134 /* the followings are for backward compatibility to old KAME apps. */
135 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP
136 #define MLD6_MTRACE MLD_MTRACE
137 #endif
138
139 #define ICMP6_MAXTYPE 201
140
141 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
142 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
143 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
144 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
145 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
146 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
147
148 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
149 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
150
151 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
152 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
153 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
154
155 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
156
157 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
158 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
159 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
160
161 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
162 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
163 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
164
165 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
166 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
167 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
168
169 /* Used in kernel only */
170 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
171 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
172
173 /*
174 * Multicast Listener Discovery
175 */
176 struct mld_hdr {
177 struct icmp6_hdr mld_icmp6_hdr;
178 struct in6_addr mld_addr; /* multicast address */
179 } __attribute__((__packed__));
180
181 /* definitions to provide backward compatibility to old KAME applications */
182 #ifndef _KERNEL
183 #define mld6_hdr mld_hdr
184 #define mld6_type mld_type
185 #define mld6_code mld_code
186 #define mld6_cksum mld_cksum
187 #define mld6_maxdelay mld_maxdelay
188 #define mld6_reserved mld_reserved
189 #define mld6_addr mld_addr
190 #endif
191
192 /* shortcut macro definitions */
193 #define mld_type mld_icmp6_hdr.icmp6_type
194 #define mld_code mld_icmp6_hdr.icmp6_code
195 #define mld_cksum mld_icmp6_hdr.icmp6_cksum
196 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
197 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
198
199 #define MLD_MINLEN 24
200
201 /*
202 * Neighbor Discovery
203 */
204
205 struct nd_router_solicit { /* router solicitation */
206 struct icmp6_hdr nd_rs_hdr;
207 /* could be followed by options */
208 } __attribute__((__packed__));
209
210 #define nd_rs_type nd_rs_hdr.icmp6_type
211 #define nd_rs_code nd_rs_hdr.icmp6_code
212 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
213 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
214
215 struct nd_router_advert { /* router advertisement */
216 struct icmp6_hdr nd_ra_hdr;
217 u_int32_t nd_ra_reachable; /* reachable time */
218 u_int32_t nd_ra_retransmit; /* retransmit timer */
219 /* could be followed by options */
220 } __attribute__((__packed__));
221
222 #define nd_ra_type nd_ra_hdr.icmp6_type
223 #define nd_ra_code nd_ra_hdr.icmp6_code
224 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
225 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
226 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
227 #define ND_RA_FLAG_MANAGED 0x80
228 #define ND_RA_FLAG_OTHER 0x40
229 #define ND_RA_FLAG_HOME_AGENT 0x20
230
231 /*
232 * Router preference values based on RFC4199.
233 */
234 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
235
236 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
237 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
238 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
239 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
240
241 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
242
243 struct nd_neighbor_solicit { /* neighbor solicitation */
244 struct icmp6_hdr nd_ns_hdr;
245 struct in6_addr nd_ns_target; /*target address */
246 /* could be followed by options */
247 } __attribute__((__packed__));
248
249 #define nd_ns_type nd_ns_hdr.icmp6_type
250 #define nd_ns_code nd_ns_hdr.icmp6_code
251 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
252 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
253
254 struct nd_neighbor_advert { /* neighbor advertisement */
255 struct icmp6_hdr nd_na_hdr;
256 struct in6_addr nd_na_target; /* target address */
257 /* could be followed by options */
258 } __attribute__((__packed__));
259
260 #define nd_na_type nd_na_hdr.icmp6_type
261 #define nd_na_code nd_na_hdr.icmp6_code
262 #define nd_na_cksum nd_na_hdr.icmp6_cksum
263 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
264 #if BYTE_ORDER == BIG_ENDIAN
265 #define ND_NA_FLAG_ROUTER 0x80000000
266 #define ND_NA_FLAG_SOLICITED 0x40000000
267 #define ND_NA_FLAG_OVERRIDE 0x20000000
268 #else
269 #if BYTE_ORDER == LITTLE_ENDIAN
270 #define ND_NA_FLAG_ROUTER 0x80
271 #define ND_NA_FLAG_SOLICITED 0x40
272 #define ND_NA_FLAG_OVERRIDE 0x20
273 #endif
274 #endif
275
276 struct nd_redirect { /* redirect */
277 struct icmp6_hdr nd_rd_hdr;
278 struct in6_addr nd_rd_target; /* target address */
279 struct in6_addr nd_rd_dst; /* destination address */
280 /* could be followed by options */
281 } __attribute__((__packed__));
282
283 #define nd_rd_type nd_rd_hdr.icmp6_type
284 #define nd_rd_code nd_rd_hdr.icmp6_code
285 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
286 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
287
288 struct nd_opt_hdr { /* Neighbor discovery option header */
289 u_int8_t nd_opt_type;
290 u_int8_t nd_opt_len;
291 /* followed by option specific data*/
292 } __attribute__((__packed__));
293
294 #define ND_OPT_SOURCE_LINKADDR 1
295 #define ND_OPT_TARGET_LINKADDR 2
296 #define ND_OPT_PREFIX_INFORMATION 3
297 #define ND_OPT_REDIRECTED_HEADER 4
298 #define ND_OPT_MTU 5
299
300 struct nd_opt_prefix_info { /* prefix information */
301 u_int8_t nd_opt_pi_type;
302 u_int8_t nd_opt_pi_len;
303 u_int8_t nd_opt_pi_prefix_len;
304 u_int8_t nd_opt_pi_flags_reserved;
305 u_int32_t nd_opt_pi_valid_time;
306 u_int32_t nd_opt_pi_preferred_time;
307 u_int32_t nd_opt_pi_reserved2;
308 struct in6_addr nd_opt_pi_prefix;
309 } __attribute__((__packed__));
310
311 #define ND_OPT_PI_FLAG_ONLINK 0x80
312 #define ND_OPT_PI_FLAG_AUTO 0x40
313
314 struct nd_opt_rd_hdr { /* redirected header */
315 u_int8_t nd_opt_rh_type;
316 u_int8_t nd_opt_rh_len;
317 u_int16_t nd_opt_rh_reserved1;
318 u_int32_t nd_opt_rh_reserved2;
319 /* followed by IP header and data */
320 } __attribute__((__packed__));
321
322 struct nd_opt_mtu { /* MTU option */
323 u_int8_t nd_opt_mtu_type;
324 u_int8_t nd_opt_mtu_len;
325 u_int16_t nd_opt_mtu_reserved;
326 u_int32_t nd_opt_mtu_mtu;
327 } __attribute__((__packed__));
328
329 /*
330 * icmp6 namelookup
331 */
332
333 struct icmp6_namelookup {
334 struct icmp6_hdr icmp6_nl_hdr;
335 u_int8_t icmp6_nl_nonce[8];
336 int32_t icmp6_nl_ttl;
337 #if 0
338 u_int8_t icmp6_nl_len;
339 u_int8_t icmp6_nl_name[3];
340 #endif
341 /* could be followed by options */
342 } __attribute__((__packed__));
343
344 /*
345 * icmp6 node information
346 */
347 struct icmp6_nodeinfo {
348 struct icmp6_hdr icmp6_ni_hdr;
349 u_int8_t icmp6_ni_nonce[8];
350 /* could be followed by reply data */
351 } __attribute__((__packed__));
352
353 #define ni_type icmp6_ni_hdr.icmp6_type
354 #define ni_code icmp6_ni_hdr.icmp6_code
355 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
356 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
357 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
358
359 #define NI_QTYPE_NOOP 0 /* NOOP */
360 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
361 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
362 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
363 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
364 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
365
366 #if BYTE_ORDER == BIG_ENDIAN
367 #define NI_SUPTYPE_FLAG_COMPRESS 0x1
368 #define NI_FQDN_FLAG_VALIDTTL 0x1
369 #elif BYTE_ORDER == LITTLE_ENDIAN
370 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100
371 #define NI_FQDN_FLAG_VALIDTTL 0x0100
372 #endif
373
374 #ifdef NAME_LOOKUPS_04
375 #if BYTE_ORDER == BIG_ENDIAN
376 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1
377 #define NI_NODEADDR_FLAG_SITELOCAL 0x2
378 #define NI_NODEADDR_FLAG_GLOBAL 0x4
379 #define NI_NODEADDR_FLAG_ALL 0x8
380 #define NI_NODEADDR_FLAG_TRUNCATE 0x10
381 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
382 #elif BYTE_ORDER == LITTLE_ENDIAN
383 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
384 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200
385 #define NI_NODEADDR_FLAG_GLOBAL 0x0400
386 #define NI_NODEADDR_FLAG_ALL 0x0800
387 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000
388 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
389 #endif
390 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
391 #if BYTE_ORDER == BIG_ENDIAN
392 #define NI_NODEADDR_FLAG_TRUNCATE 0x1
393 #define NI_NODEADDR_FLAG_ALL 0x2
394 #define NI_NODEADDR_FLAG_COMPAT 0x4
395 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8
396 #define NI_NODEADDR_FLAG_SITELOCAL 0x10
397 #define NI_NODEADDR_FLAG_GLOBAL 0x20
398 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
399 #elif BYTE_ORDER == LITTLE_ENDIAN
400 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100
401 #define NI_NODEADDR_FLAG_ALL 0x0200
402 #define NI_NODEADDR_FLAG_COMPAT 0x0400
403 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
404 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000
405 #define NI_NODEADDR_FLAG_GLOBAL 0x2000
406 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
407 #endif
408 #endif
409
410 struct ni_reply_fqdn {
411 u_int32_t ni_fqdn_ttl; /* TTL */
412 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
413 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
414 } __attribute__((__packed__));
415
416 /*
417 * Router Renumbering. as router-renum-08.txt
418 */
419 struct icmp6_router_renum { /* router renumbering header */
420 struct icmp6_hdr rr_hdr;
421 u_int8_t rr_segnum;
422 u_int8_t rr_flags;
423 u_int16_t rr_maxdelay;
424 u_int32_t rr_reserved;
425 } __attribute__((__packed__));
426
427 #define ICMP6_RR_FLAGS_TEST 0x80
428 #define ICMP6_RR_FLAGS_REQRESULT 0x40
429 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
430 #define ICMP6_RR_FLAGS_SPECSITE 0x10
431 #define ICMP6_RR_FLAGS_PREVDONE 0x08
432
433 #define rr_type rr_hdr.icmp6_type
434 #define rr_code rr_hdr.icmp6_code
435 #define rr_cksum rr_hdr.icmp6_cksum
436 #define rr_seqnum rr_hdr.icmp6_data32[0]
437
438 struct rr_pco_match { /* match prefix part */
439 u_int8_t rpm_code;
440 u_int8_t rpm_len;
441 u_int8_t rpm_ordinal;
442 u_int8_t rpm_matchlen;
443 u_int8_t rpm_minlen;
444 u_int8_t rpm_maxlen;
445 u_int16_t rpm_reserved;
446 struct in6_addr rpm_prefix;
447 } __attribute__((__packed__));
448
449 #define RPM_PCO_ADD 1
450 #define RPM_PCO_CHANGE 2
451 #define RPM_PCO_SETGLOBAL 3
452 #define RPM_PCO_MAX 4
453
454 struct rr_pco_use { /* use prefix part */
455 u_int8_t rpu_uselen;
456 u_int8_t rpu_keeplen;
457 u_int8_t rpu_ramask;
458 u_int8_t rpu_raflags;
459 u_int32_t rpu_vltime;
460 u_int32_t rpu_pltime;
461 u_int32_t rpu_flags;
462 struct in6_addr rpu_prefix;
463 } __attribute__((__packed__));
464 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
465 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
466
467 #if BYTE_ORDER == BIG_ENDIAN
468 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
469 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
470 #elif BYTE_ORDER == LITTLE_ENDIAN
471 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
472 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
473 #endif
474
475 struct rr_result { /* router renumbering result message */
476 u_int16_t rrr_flags;
477 u_int8_t rrr_ordinal;
478 u_int8_t rrr_matchedlen;
479 u_int32_t rrr_ifid;
480 struct in6_addr rrr_prefix;
481 } __attribute__((__packed__));
482 #if BYTE_ORDER == BIG_ENDIAN
483 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
484 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
485 #elif BYTE_ORDER == LITTLE_ENDIAN
486 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
487 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
488 #endif
489
490 /*
491 * icmp6 filter structures.
492 */
493
494 struct icmp6_filter {
495 u_int32_t icmp6_filt[8];
496 };
497
498 #define ICMP6_FILTER_SETPASSALL(filterp) \
499 (void)memset(filterp, 0xff, sizeof(struct icmp6_filter))
500 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
501 (void)memset(filterp, 0x00, sizeof(struct icmp6_filter))
502 #define ICMP6_FILTER_SETPASS(type, filterp) \
503 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
504 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
505 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
506 #define ICMP6_FILTER_WILLPASS(type, filterp) \
507 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
508 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
509 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
510
511 /*
512 * Variables related to this implementation
513 * of the internet control message protocol version 6.
514 */
515 struct icmp6errstat {
516 u_quad_t icp6errs_dst_unreach_noroute;
517 u_quad_t icp6errs_dst_unreach_admin;
518 u_quad_t icp6errs_dst_unreach_beyondscope;
519 u_quad_t icp6errs_dst_unreach_addr;
520 u_quad_t icp6errs_dst_unreach_noport;
521 u_quad_t icp6errs_packet_too_big;
522 u_quad_t icp6errs_time_exceed_transit;
523 u_quad_t icp6errs_time_exceed_reassembly;
524 u_quad_t icp6errs_paramprob_header;
525 u_quad_t icp6errs_paramprob_nextheader;
526 u_quad_t icp6errs_paramprob_option;
527 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
528 u_quad_t icp6errs_unknown;
529 };
530
531 struct icmp6stat {
532 /* statistics related to icmp6 packets generated */
533 u_quad_t icp6s_error; /* # of calls to icmp6_error */
534 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */
535 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */
536 u_quad_t icp6s_outhist[256];
537 /* statistics related to input message processed */
538 u_quad_t icp6s_badcode; /* icmp6_code out of range */
539 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
540 u_quad_t icp6s_checksum; /* bad checksum */
541 u_quad_t icp6s_badlen; /* calculated bound mismatch */
542 /*
543 * number of responses: this member is inherited from netinet code, but
544 * for netinet6 code, it is already available in icp6s_outhist[].
545 */
546 u_quad_t icp6s_reflect;
547 u_quad_t icp6s_inhist[256];
548 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */
549 struct icmp6errstat icp6s_outerrhist;
550 #define icp6s_odst_unreach_noroute \
551 icp6s_outerrhist.icp6errs_dst_unreach_noroute
552 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
553 #define icp6s_odst_unreach_beyondscope \
554 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
555 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
556 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
557 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
558 #define icp6s_otime_exceed_transit \
559 icp6s_outerrhist.icp6errs_time_exceed_transit
560 #define icp6s_otime_exceed_reassembly \
561 icp6s_outerrhist.icp6errs_time_exceed_reassembly
562 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
563 #define icp6s_oparamprob_nextheader \
564 icp6s_outerrhist.icp6errs_paramprob_nextheader
565 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
566 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
567 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
568 u_quad_t icp6s_pmtuchg; /* path MTU changes */
569 u_quad_t icp6s_nd_badopt; /* bad ND options */
570 u_quad_t icp6s_badns; /* bad neighbor solicitation */
571 u_quad_t icp6s_badna; /* bad neighbor advertisement */
572 u_quad_t icp6s_badrs; /* bad router advertisement */
573 u_quad_t icp6s_badra; /* bad router advertisement */
574 u_quad_t icp6s_badredirect; /* bad redirect message */
575 };
576
577 /*
578 * Names for ICMP sysctl objects
579 */
580 #define ICMPV6CTL_STATS 1
581 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
582 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
583 #if 0 /*obsoleted*/
584 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
585 #endif
586 #define ICMPV6CTL_ND6_PRUNE 6
587 #define ICMPV6CTL_ND6_DELAY 8
588 #define ICMPV6CTL_ND6_UMAXTRIES 9
589 #define ICMPV6CTL_ND6_MMAXTRIES 10
590 #define ICMPV6CTL_ND6_USELOOPBACK 11
591 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
592 #define ICMPV6CTL_NODEINFO 13
593 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
594 #define ICMPV6CTL_ND6_MAXNUDHINT 15
595 #define ICMPV6CTL_MTUDISC_HIWAT 16
596 #define ICMPV6CTL_MTUDISC_LOWAT 17
597 #define ICMPV6CTL_ND6_DEBUG 18
598 #define ICMPV6CTL_ND6_DRLIST 19
599 #define ICMPV6CTL_ND6_PRLIST 20
600 #define ICMPV6CTL_ND6_MAXQLEN 24
601 #define ICMPV6CTL_MAXID 25
602
603 #define ICMPV6CTL_NAMES { \
604 { 0, 0 }, \
605 { 0, 0 }, \
606 { "rediraccept", CTLTYPE_INT }, \
607 { "redirtimeout", CTLTYPE_INT }, \
608 { 0, 0 }, \
609 { 0, 0 }, \
610 { "nd6_prune", CTLTYPE_INT }, \
611 { 0, 0 }, \
612 { "nd6_delay", CTLTYPE_INT }, \
613 { "nd6_umaxtries", CTLTYPE_INT }, \
614 { "nd6_mmaxtries", CTLTYPE_INT }, \
615 { "nd6_useloopback", CTLTYPE_INT }, \
616 { 0, 0 }, \
617 { "nodeinfo", CTLTYPE_INT }, \
618 { "errppslimit", CTLTYPE_INT }, \
619 { "nd6_maxnudhint", CTLTYPE_INT }, \
620 { "mtudisc_hiwat", CTLTYPE_INT }, \
621 { "mtudisc_lowat", CTLTYPE_INT }, \
622 { "nd6_debug", CTLTYPE_INT }, \
623 { 0, 0 }, \
624 { 0, 0 }, \
625 { 0, 0 }, \
626 { 0, 0 }, \
627 { 0, 0 }, \
628 { "nd6_maxqueuelen", CTLTYPE_INT }, \
629 }
630
631 #define RTF_PROBEMTU RTF_PROTO1
632
633 #ifdef _KERNEL
634 struct rtentry;
635 struct rttimer;
636 struct in6_multi;
637
638 void icmp6_init(void);
639 void icmp6_paramerror(struct mbuf *, int);
640 void icmp6_error(struct mbuf *, int, int, int);
641 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *);
642 int icmp6_input(struct mbuf **, int *, int);
643 void icmp6_fasttimo(void);
644 void icmp6_reflect(struct mbuf *, size_t);
645 void icmp6_prepare(struct mbuf *);
646 void icmp6_redirect_input(struct mbuf *, int);
647 void icmp6_redirect_output(struct mbuf *, struct rtentry *);
648 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
649
650 struct ip6ctlparam;
651 void icmp6_mtudisc_update(struct ip6ctlparam *, int);
652 void icmp6_mtudisc_callback_register(void (*)(struct in6_addr *));
653
654 /* XXX: is this the right place for these macros? */
655 #define icmp6_ifstat_inc(ifp, tag) \
656 do { \
657 if (ifp) \
658 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \
659 } while (/*CONSTCOND*/ 0)
660
661 #define icmp6_ifoutstat_inc(ifp, type, code) \
662 do { \
663 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
664 switch(type) { \
665 case ICMP6_DST_UNREACH: \
666 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
667 if (code == ICMP6_DST_UNREACH_ADMIN) \
668 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
669 break; \
670 case ICMP6_PACKET_TOO_BIG: \
671 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
672 break; \
673 case ICMP6_TIME_EXCEEDED: \
674 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
675 break; \
676 case ICMP6_PARAM_PROB: \
677 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
678 break; \
679 case ICMP6_ECHO_REQUEST: \
680 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
681 break; \
682 case ICMP6_ECHO_REPLY: \
683 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
684 break; \
685 case MLD_LISTENER_QUERY: \
686 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
687 break; \
688 case MLD_LISTENER_REPORT: \
689 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
690 break; \
691 case MLD_LISTENER_DONE: \
692 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
693 break; \
694 case ND_ROUTER_SOLICIT: \
695 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
696 break; \
697 case ND_ROUTER_ADVERT: \
698 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
699 break; \
700 case ND_NEIGHBOR_SOLICIT: \
701 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
702 break; \
703 case ND_NEIGHBOR_ADVERT: \
704 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
705 break; \
706 case ND_REDIRECT: \
707 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
708 break; \
709 } \
710 } while (/*CONSTCOND*/ 0)
711
712 extern int icmp6_rediraccept; /* accept/process redirects */
713 extern int icmp6_redirtimeout; /* cache time for redirect routes */
714 #endif /* _KERNEL */
715
716 #endif /* !_NETINET_ICMP6_H_ */
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