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1/*
2 * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */
29
30/*
31 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
32 * All rights reserved.
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in the
41 * documentation and/or other materials provided with the distribution.
42 * 3. Neither the name of the project nor the names of its contributors
43 * may be used to endorse or promote products derived from this software
44 * without specific prior written permission.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59/*
60 * Copyright (c) 1982, 1986, 1993
61 * The Regents of the University of California. All rights reserved.
62 *
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
65 * are met:
66 * 1. Redistributions of source code must retain the above copyright
67 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in the
70 * documentation and/or other materials provided with the distribution.
71 * 3. All advertising materials mentioning features or use of this software
72 * must display the following acknowledgement:
73 * This product includes software developed by the University of
74 * California, Berkeley and its contributors.
75 * 4. Neither the name of the University nor the names of its contributors
76 * may be used to endorse or promote products derived from this software
77 * without specific prior written permission.
78 *
79 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
80 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
81 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
82 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
83 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
84 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
85 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
86 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
87 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
88 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
89 * SUCH DAMAGE.
90 *
91 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
92 */
93
94#ifndef _NETINET_ICMP6_H_
95#define _NETINET_ICMP6_H_
96#ifndef DRIVERKIT
97#include <sys/appleapiopts.h>
98#include <sys/types.h>
99#else
100#include <sys/_types.h>
101#endif /* DRIVERKIT */
102
103#define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
104 * - sizeof(struct icmp6_hdr) */
105
106struct icmp6_hdr {
107 u_int8_t icmp6_type; /* type field */
108 u_int8_t icmp6_code; /* code field */
109 u_int16_t icmp6_cksum; /* checksum field */
110 union {
111 u_int32_t icmp6_un_data32[1]; /* type-specific field */
112 u_int16_t icmp6_un_data16[2]; /* type-specific field */
113 u_int8_t icmp6_un_data8[4]; /* type-specific field */
114 } icmp6_dataun;
115} __attribute__((__packed__));
116
117#define icmp6_data32 icmp6_dataun.icmp6_un_data32
118#define icmp6_data16 icmp6_dataun.icmp6_un_data16
119#define icmp6_data8 icmp6_dataun.icmp6_un_data8
120#define icmp6_pptr icmp6_data32[0] /* parameter prob */
121#define icmp6_mtu icmp6_data32[0] /* packet too big */
122#define icmp6_id icmp6_data16[0] /* echo request/reply */
123#define icmp6_seq icmp6_data16[1] /* echo request/reply */
124#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
125
126#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
127#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
128#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
129#define ICMP6_PARAM_PROB 4 /* ip6 header bad */
130
131#define ICMP6_ECHO_REQUEST 128 /* echo service */
132#define ICMP6_ECHO_REPLY 129 /* echo reply */
133#define MLD_LISTENER_QUERY 130 /* multicast listener query */
134#define MLD_LISTENER_REPORT 131 /* multicast listener report */
135#define MLD_LISTENER_DONE 132 /* multicast listener done */
136#define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */
137
138/* RFC2292 decls */
139#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
140#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
141#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
142
143#ifndef KERNEL
144/* the followings are for backward compatibility to old KAME apps. */
145#define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
146#define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
147#define MLD6_LISTENER_DONE MLD_LISTENER_DONE
148#endif
149
150#define ND_ROUTER_SOLICIT 133 /* router solicitation */
151#define ND_ROUTER_ADVERT 134 /* router advertisement */
152#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
153#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
154#define ND_REDIRECT 137 /* redirect */
155
156#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
157
158#define ICMP6_WRUREQUEST 139 /* who are you request */
159#define ICMP6_WRUREPLY 140 /* who are you reply */
160#define ICMP6_FQDN_QUERY 139 /* FQDN query */
161#define ICMP6_FQDN_REPLY 140 /* FQDN reply */
162#define ICMP6_NI_QUERY 139 /* node information request */
163#define ICMP6_NI_REPLY 140 /* node information reply */
164#define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */
165
166/* The definitions below are experimental. TBA */
167#define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */
168#define MLD_MTRACE 201 /* mtrace messages */
169
170#ifndef KERNEL
171#define MLD6_MTRACE_RESP MLD_MTRACE_RESP
172#define MLD6_MTRACE MLD_MTRACE
173#endif
174
175#define ICMP6_MAXTYPE 201
176
177#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
178#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
179#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
180#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
181#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
182#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
183
184#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
185#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
186
187#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
188#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
189#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
190#define ICMP6_PARAMPROB_FIRSTFRAG_INCOMP_HDR 3 /* first fragment has incomplete IPv6 Header Chain */
191
192#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
193
194#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
195#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
196#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
197
198#define ICMP6_NI_SUCCESS 0 /* node information successful reply */
199#define ICMP6_NI_REFUSED 1 /* node information request is refused */
200#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
201
202#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
203#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
204#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
205
206/* Used in kernel only */
207#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
208#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
209
210/*
211 * Multicast Listener Discovery
212 */
213struct mld_hdr {
214 struct icmp6_hdr mld_icmp6_hdr;
215 struct in6_addr mld_addr; /* multicast address */
216} __attribute__((__packed__));
217
218/* definitions to provide backward compatibility to old KAME applications */
219#ifndef KERNEL
220#define mld6_hdr mld_hdr
221#define mld6_type mld_type
222#define mld6_code mld_code
223#define mld6_cksum mld_cksum
224#define mld6_maxdelay mld_maxdelay
225#define mld6_reserved mld_reserved
226#define mld6_addr mld_addr
227#endif
228
229/* shortcut macro definitions */
230#define mld_type mld_icmp6_hdr.icmp6_type
231#define mld_code mld_icmp6_hdr.icmp6_code
232#define mld_cksum mld_icmp6_hdr.icmp6_cksum
233#define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
234#define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
235#define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0]
236#define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1]
237
238
239#define ICMP6_ERRORTYPE(type) \
240 ((type) == ICMP6_DST_UNREACH || (type) == ICMP6_PACKET_TOO_BIG || \
241 (type) == ICMP6_TIME_EXCEEDED || (type) == ICMP6_PARAM_PROB)
242/*
243 * Neighbor Discovery
244 */
245
246struct nd_router_solicit { /* router solicitation */
247 struct icmp6_hdr nd_rs_hdr;
248 /* could be followed by options */
249}__attribute__((__packed__));
250
251#define nd_rs_type nd_rs_hdr.icmp6_type
252#define nd_rs_code nd_rs_hdr.icmp6_code
253#define nd_rs_cksum nd_rs_hdr.icmp6_cksum
254#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
255
256struct nd_router_advert { /* router advertisement */
257 struct icmp6_hdr nd_ra_hdr;
258 u_int32_t nd_ra_reachable; /* reachable time */
259 u_int32_t nd_ra_retransmit; /* retransmit timer */
260 /* could be followed by options */
261} __attribute__((__packed__));
262
263#define nd_ra_type nd_ra_hdr.icmp6_type
264#define nd_ra_code nd_ra_hdr.icmp6_code
265#define nd_ra_cksum nd_ra_hdr.icmp6_cksum
266#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
267#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
268#define ND_RA_FLAG_MANAGED 0x80
269#define ND_RA_FLAG_OTHER 0x40
270#define ND_RA_FLAG_HA 0x20
271
272/* Router preference values based on RFC 4191 */
273#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
274
275#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
276#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
277#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
278#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
279
280#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
281
282struct nd_neighbor_solicit { /* neighbor solicitation */
283 struct icmp6_hdr nd_ns_hdr;
284 struct in6_addr nd_ns_target; /*target address */
285 /* could be followed by options */
286}__attribute__((__packed__));
287
288#define nd_ns_type nd_ns_hdr.icmp6_type
289#define nd_ns_code nd_ns_hdr.icmp6_code
290#define nd_ns_cksum nd_ns_hdr.icmp6_cksum
291#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
292
293struct nd_neighbor_advert { /* neighbor advertisement */
294 struct icmp6_hdr nd_na_hdr;
295 struct in6_addr nd_na_target; /* target address */
296 /* could be followed by options */
297}__attribute__((__packed__));
298
299#define nd_na_type nd_na_hdr.icmp6_type
300#define nd_na_code nd_na_hdr.icmp6_code
301#define nd_na_cksum nd_na_hdr.icmp6_cksum
302#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
303#if BYTE_ORDER == BIG_ENDIAN
304#define ND_NA_FLAG_ROUTER 0x80000000
305#define ND_NA_FLAG_SOLICITED 0x40000000
306#define ND_NA_FLAG_OVERRIDE 0x20000000
307#else
308#if BYTE_ORDER == LITTLE_ENDIAN
309#define ND_NA_FLAG_ROUTER 0x80
310#define ND_NA_FLAG_SOLICITED 0x40
311#define ND_NA_FLAG_OVERRIDE 0x20
312#endif
313#endif
314
315struct nd_redirect { /* redirect */
316 struct icmp6_hdr nd_rd_hdr;
317 struct in6_addr nd_rd_target; /* target address */
318 struct in6_addr nd_rd_dst; /* destination address */
319 /* could be followed by options */
320}__attribute__((__packed__));
321
322#define nd_rd_type nd_rd_hdr.icmp6_type
323#define nd_rd_code nd_rd_hdr.icmp6_code
324#define nd_rd_cksum nd_rd_hdr.icmp6_cksum
325#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
326
327struct nd_opt_hdr { /* Neighbor discovery option header */
328 u_int8_t nd_opt_type;
329 u_int8_t nd_opt_len;
330 /* followed by option specific data*/
331}__attribute__((__packed__));
332
333#define ND_OPT_SOURCE_LINKADDR 1
334#define ND_OPT_TARGET_LINKADDR 2
335#define ND_OPT_PREFIX_INFORMATION 3
336#define ND_OPT_REDIRECTED_HEADER 4
337#define ND_OPT_MTU 5
338#define ND_OPT_NONCE 14 /* RFC 3971 */
339#define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */
340#define ND_OPT_RDNSS 25 /* RFC 6106 */
341#define ND_OPT_DNSSL 31 /* RFC 6106 */
342#define ND_OPT_CAPTIVE_PORTAL 37 /* RFC 7710 */
343
344struct nd_opt_prefix_info { /* prefix information */
345 u_int8_t nd_opt_pi_type;
346 u_int8_t nd_opt_pi_len;
347 u_int8_t nd_opt_pi_prefix_len;
348 u_int8_t nd_opt_pi_flags_reserved;
349 u_int32_t nd_opt_pi_valid_time;
350 u_int32_t nd_opt_pi_preferred_time;
351 u_int32_t nd_opt_pi_reserved2;
352 struct in6_addr nd_opt_pi_prefix;
353}__attribute__((__packed__));
354
355#define ND_OPT_PI_FLAG_ONLINK 0x80
356#define ND_OPT_PI_FLAG_AUTO 0x40
357
358#define ND_OPT_NONCE_LEN ((1 * 8) - 2)
359#if ((ND_OPT_NONCE_LEN + 2) % 8) != 0
360#error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8."
361#endif
362
363struct nd_opt_nonce { /* nonce option */
364 u_int8_t nd_opt_nonce_type;
365 u_int8_t nd_opt_nonce_len;
366 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN];
367} __attribute__((__packed__));
368
369struct nd_opt_rd_hdr { /* redirected header */
370 u_int8_t nd_opt_rh_type;
371 u_int8_t nd_opt_rh_len;
372 u_int16_t nd_opt_rh_reserved1;
373 u_int32_t nd_opt_rh_reserved2;
374 /* followed by IP header and data */
375} __attribute__((__packed__));
376
377struct nd_opt_mtu { /* MTU option */
378 u_int8_t nd_opt_mtu_type;
379 u_int8_t nd_opt_mtu_len;
380 u_int16_t nd_opt_mtu_reserved;
381 u_int32_t nd_opt_mtu_mtu;
382}__attribute__((__packed__));
383
384struct nd_opt_route_info { /* route info */
385 u_int8_t nd_opt_rti_type;
386 u_int8_t nd_opt_rti_len;
387 u_int8_t nd_opt_rti_prefixlen;
388 u_int8_t nd_opt_rti_flags;
389 u_int32_t nd_opt_rti_lifetime;
390 /* prefix follows */
391}__attribute__((__packed__));
392
393struct nd_opt_rdnss { /* recursive domain name system servers */
394 u_int8_t nd_opt_rdnss_type;
395 u_int8_t nd_opt_rdnss_len;
396 u_int16_t nd_opt_rdnss_reserved;
397 u_int32_t nd_opt_rdnss_lifetime;
398 struct in6_addr nd_opt_rdnss_addr[1];
399} __attribute__((__packed__));
400
401struct nd_opt_dnssl { /* domain name search list */
402 u_int8_t nd_opt_dnssl_type;
403 u_int8_t nd_opt_dnssl_len;
404 u_int16_t nd_opt_dnssl_reserved;
405 u_int32_t nd_opt_dnssl_lifetime;
406 u_int8_t nd_opt_dnssl_domains[8];
407} __attribute__((__packed__));
408
409/*
410 * icmp6 namelookup
411 */
412
413struct icmp6_namelookup {
414 struct icmp6_hdr icmp6_nl_hdr;
415 u_int8_t icmp6_nl_nonce[8];
416 int32_t icmp6_nl_ttl;
417#if 0
418 u_int8_t icmp6_nl_len;
419 u_int8_t icmp6_nl_name[3];
420#endif
421 /* could be followed by options */
422}__attribute__((__packed__));
423
424/*
425 * icmp6 node information
426 */
427struct icmp6_nodeinfo {
428 struct icmp6_hdr icmp6_ni_hdr;
429 u_int8_t icmp6_ni_nonce[8];
430 /* could be followed by reply data */
431}__attribute__((__packed__));
432
433#define ni_type icmp6_ni_hdr.icmp6_type
434#define ni_code icmp6_ni_hdr.icmp6_code
435#define ni_cksum icmp6_ni_hdr.icmp6_cksum
436#define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
437#define ni_flags icmp6_ni_hdr.icmp6_data16[1]
438
439#define NI_QTYPE_NOOP 0 /* NOOP */
440#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
441#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
442#define NI_QTYPE_DNSNAME 2 /* DNS Name */
443#define NI_QTYPE_NODEADDR 3 /* Node Addresses */
444#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
445
446#if BYTE_ORDER == BIG_ENDIAN
447#define NI_SUPTYPE_FLAG_COMPRESS 0x1
448#define NI_FQDN_FLAG_VALIDTTL 0x1
449#elif BYTE_ORDER == LITTLE_ENDIAN
450#define NI_SUPTYPE_FLAG_COMPRESS 0x0100
451#define NI_FQDN_FLAG_VALIDTTL 0x0100
452#endif
453
454#ifdef NAME_LOOKUPS_04
455#if BYTE_ORDER == BIG_ENDIAN
456#define NI_NODEADDR_FLAG_LINKLOCAL 0x1
457#define NI_NODEADDR_FLAG_SITELOCAL 0x2
458#define NI_NODEADDR_FLAG_GLOBAL 0x4
459#define NI_NODEADDR_FLAG_ALL 0x8
460#define NI_NODEADDR_FLAG_TRUNCATE 0x10
461#define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
462#elif BYTE_ORDER == LITTLE_ENDIAN
463#define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
464#define NI_NODEADDR_FLAG_SITELOCAL 0x0200
465#define NI_NODEADDR_FLAG_GLOBAL 0x0400
466#define NI_NODEADDR_FLAG_ALL 0x0800
467#define NI_NODEADDR_FLAG_TRUNCATE 0x1000
468#define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
469#endif
470#else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
471#if BYTE_ORDER == BIG_ENDIAN
472#define NI_NODEADDR_FLAG_TRUNCATE 0x1
473#define NI_NODEADDR_FLAG_ALL 0x2
474#define NI_NODEADDR_FLAG_COMPAT 0x4
475#define NI_NODEADDR_FLAG_LINKLOCAL 0x8
476#define NI_NODEADDR_FLAG_SITELOCAL 0x10
477#define NI_NODEADDR_FLAG_GLOBAL 0x20
478#define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
479#elif BYTE_ORDER == LITTLE_ENDIAN
480#define NI_NODEADDR_FLAG_TRUNCATE 0x0100
481#define NI_NODEADDR_FLAG_ALL 0x0200
482#define NI_NODEADDR_FLAG_COMPAT 0x0400
483#define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
484#define NI_NODEADDR_FLAG_SITELOCAL 0x1000
485#define NI_NODEADDR_FLAG_GLOBAL 0x2000
486#define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
487#endif
488#endif
489
490struct ni_reply_fqdn {
491 u_int32_t ni_fqdn_ttl; /* TTL */
492 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
493 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
494}__attribute__((__packed__));
495
496/*
497 * Router Renumbering. as router-renum-08.txt
498 */
499struct icmp6_router_renum { /* router renumbering header */
500 struct icmp6_hdr rr_hdr;
501 u_int8_t rr_segnum;
502 u_int8_t rr_flags;
503 u_int16_t rr_maxdelay;
504 u_int32_t rr_reserved;
505} __attribute__((__packed__));
506
507#define ICMP6_RR_FLAGS_TEST 0x80
508#define ICMP6_RR_FLAGS_REQRESULT 0x40
509#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
510#define ICMP6_RR_FLAGS_SPECSITE 0x10
511#define ICMP6_RR_FLAGS_PREVDONE 0x08
512
513#define rr_type rr_hdr.icmp6_type
514#define rr_code rr_hdr.icmp6_code
515#define rr_cksum rr_hdr.icmp6_cksum
516#define rr_seqnum rr_hdr.icmp6_data32[0]
517
518struct rr_pco_match { /* match prefix part */
519 u_int8_t rpm_code;
520 u_int8_t rpm_len;
521 u_int8_t rpm_ordinal;
522 u_int8_t rpm_matchlen;
523 u_int8_t rpm_minlen;
524 u_int8_t rpm_maxlen;
525 u_int16_t rpm_reserved;
526 struct in6_addr rpm_prefix;
527} __attribute__((__packed__));
528
529#define RPM_PCO_ADD 1
530#define RPM_PCO_CHANGE 2
531#define RPM_PCO_SETGLOBAL 3
532#define RPM_PCO_MAX 4
533
534struct rr_pco_use { /* use prefix part */
535 u_int8_t rpu_uselen;
536 u_int8_t rpu_keeplen;
537 u_int8_t rpu_ramask;
538 u_int8_t rpu_raflags;
539 u_int32_t rpu_vltime;
540 u_int32_t rpu_pltime;
541 u_int32_t rpu_flags;
542 struct in6_addr rpu_prefix;
543} __attribute__((__packed__));
544#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
545#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
546
547#if BYTE_ORDER == BIG_ENDIAN
548#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
549#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
550#elif BYTE_ORDER == LITTLE_ENDIAN
551#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
552#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
553#endif
554
555struct rr_result { /* router renumbering result message */
556 u_int16_t rrr_flags;
557 u_int8_t rrr_ordinal;
558 u_int8_t rrr_matchedlen;
559 u_int32_t rrr_ifid;
560 struct in6_addr rrr_prefix;
561} __attribute__((__packed__));
562#if BYTE_ORDER == BIG_ENDIAN
563#define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
564#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
565#elif BYTE_ORDER == LITTLE_ENDIAN
566#define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
567#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
568#endif
569
570/*
571 * icmp6 filter structures.
572 */
573
574struct icmp6_filter {
575 u_int32_t icmp6_filt[8];
576};
577
578#ifdef KERNEL
579#define ICMP6_FILTER_SETPASSALL(filterp) \
580do { \
581 int i; u_char *ptr; \
582 ptr = (u_char *)filterp; \
583 for (i = 0; i < sizeof(struct icmp6_filter); i++) \
584 ptr[i] = 0xff; \
585} while (0)
586#define ICMP6_FILTER_SETBLOCKALL(filterp) \
587 bzero(filterp, sizeof(struct icmp6_filter))
588#else /* KERNEL */
589#define ICMP6_FILTER_SETPASSALL(filterp) \
590 memset(filterp, 0xff, sizeof(struct icmp6_filter))
591#define ICMP6_FILTER_SETBLOCKALL(filterp) \
592 memset(filterp, 0x00, sizeof(struct icmp6_filter))
593#endif /* KERNEL */
594
595#define ICMP6_FILTER_SETPASS(type, filterp) \
596 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
597#define ICMP6_FILTER_SETBLOCK(type, filterp) \
598 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
599#define ICMP6_FILTER_WILLPASS(type, filterp) \
600 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
601#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
602 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
603
604/*
605 * Variables related to this implementation
606 * of the internet control message protocol version 6.
607 */
608struct icmp6errstat {
609 u_quad_t icp6errs_dst_unreach_noroute;
610 u_quad_t icp6errs_dst_unreach_admin;
611 u_quad_t icp6errs_dst_unreach_beyondscope;
612 u_quad_t icp6errs_dst_unreach_addr;
613 u_quad_t icp6errs_dst_unreach_noport;
614 u_quad_t icp6errs_packet_too_big;
615 u_quad_t icp6errs_time_exceed_transit;
616 u_quad_t icp6errs_time_exceed_reassembly;
617 u_quad_t icp6errs_paramprob_header;
618 u_quad_t icp6errs_paramprob_nextheader;
619 u_quad_t icp6errs_paramprob_option;
620 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */
621 u_quad_t icp6errs_unknown;
622};
623
624struct icmp6stat {
625/* statistics related to icmp6 packets generated */
626 u_quad_t icp6s_error; /* # of calls to icmp6_error */
627 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */
628 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */
629 u_quad_t icp6s_outhist[256];
630/* statistics related to input message processed */
631 u_quad_t icp6s_badcode; /* icmp6_code out of range */
632 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
633 u_quad_t icp6s_checksum; /* bad checksum */
634 u_quad_t icp6s_badlen; /* calculated bound mismatch */
635 u_quad_t icp6s_reflect; /* number of responses */
636 u_quad_t icp6s_inhist[256];
637 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */
638 struct icmp6errstat icp6s_outerrhist;
639#define icp6s_odst_unreach_noroute \
640 icp6s_outerrhist.icp6errs_dst_unreach_noroute
641#define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
642#define icp6s_odst_unreach_beyondscope \
643 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
644#define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
645#define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
646#define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
647#define icp6s_otime_exceed_transit \
648 icp6s_outerrhist.icp6errs_time_exceed_transit
649#define icp6s_otime_exceed_reassembly \
650 icp6s_outerrhist.icp6errs_time_exceed_reassembly
651#define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
652#define icp6s_oparamprob_nextheader \
653 icp6s_outerrhist.icp6errs_paramprob_nextheader
654#define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
655#define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
656#define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
657 u_quad_t icp6s_pmtuchg; /* path MTU changes */
658 u_quad_t icp6s_nd_badopt; /* bad ND options */
659 u_quad_t icp6s_badns; /* bad neighbor solicitation */
660 u_quad_t icp6s_badna; /* bad neighbor advertisement */
661 u_quad_t icp6s_badrs; /* bad router advertisement */
662 u_quad_t icp6s_badra; /* bad router advertisement */
663 u_quad_t icp6s_badredirect; /* bad redirect message */
664 u_quad_t icp6s_rfc6980_drop; /* NDP packet dropped based on RFC 6980 */
665 u_quad_t icp6s_badpkttoobig; /* bad packet too big */
666};
667
668/*
669 * Names for ICMP sysctl objects
670 */
671#define ICMPV6CTL_STATS 1
672#define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
673#define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
674#if 0 /*obsoleted*/
675#define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
676#endif
677#define ICMPV6CTL_ND6_PRUNE 6
678#define ICMPV6CTL_ND6_DELAY 8
679#define ICMPV6CTL_ND6_UMAXTRIES 9
680#define ICMPV6CTL_ND6_MMAXTRIES 10
681#define ICMPV6CTL_ND6_USELOOPBACK 11
682/*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
683#define ICMPV6CTL_NODEINFO 13
684#define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
685#define ICMPV6CTL_ND6_MAXNUDHINT 15
686#define ICMPV6CTL_MTUDISC_HIWAT 16
687#define ICMPV6CTL_MTUDISC_LOWAT 17
688#define ICMPV6CTL_ND6_DEBUG 18
689#define ICMPV6CTL_ND6_DRLIST 19
690#define ICMPV6CTL_ND6_PRLIST 20
691#define ICMPV6CTL_MLD_MAXSRCFILTER 21
692#define ICMPV6CTL_MLD_SOMAXSRC 22
693#define ICMPV6CTL_MLD_VERSION 23
694#define ICMPV6CTL_ND6_MAXQLEN 24
695#define ICMPV6CTL_ND6_ACCEPT_6TO4 25
696#define ICMPV6CTL_ND6_OPTIMISTIC_DAD 26 /* RFC 4429 */
697#define ICMPV6CTL_ERRPPSLIMIT_RANDOM_INCR 27
698#define ICMPV6CTL_MAXID 28
699
700#ifdef BSD_KERNEL_PRIVATE
701#define ICMPV6CTL_NAMES { \
702 { 0, 0 }, \
703 { 0, 0 }, \
704 { "rediraccept", CTLTYPE_INT }, \
705 { "redirtimeout", CTLTYPE_INT }, \
706 { 0, 0 }, \
707 { 0, 0 }, \
708 { "nd6_prune", CTLTYPE_INT }, \
709 { 0, 0 }, \
710 { "nd6_delay", CTLTYPE_INT }, \
711 { "nd6_umaxtries", CTLTYPE_INT }, \
712 { "nd6_mmaxtries", CTLTYPE_INT }, \
713 { "nd6_useloopback", CTLTYPE_INT }, \
714 { 0, 0 }, \
715 { "nodeinfo", CTLTYPE_INT }, \
716 { "errppslimit", CTLTYPE_INT }, \
717 { "nd6_maxnudhint", CTLTYPE_INT }, \
718 { "mtudisc_hiwat", CTLTYPE_INT }, \
719 { "mtudisc_lowat", CTLTYPE_INT }, \
720 { "nd6_debug", CTLTYPE_INT }, \
721 { 0, 0 }, \
722 { 0, 0 }, \
723 { 0, 0 }, \
724 { 0, 0 }, \
725 { 0, 0 }, \
726 { 0, 0 }, \
727 { "nd6_accept_6to4", CTLTYPE_INT }, \
728 { "nd6_optimistic_dad", CTLTYPE_INT }, \
729}
730
731# ifdef __STDC__
732struct rtentry;
733struct rttimer;
734struct in6_multi;
735# endif
736struct ip6protosw;
737void icmp6_init(struct ip6protosw *, struct domain *);
738void icmp6_paramerror(struct mbuf *, int);
739
740void icmp6_error_flag(struct mbuf *, int, int, int, int);
741#define ICMP6_ERROR_RST_MRCVIF 0x1
742
743void icmp6_error(struct mbuf *, int, int, int);
744void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *);
745int icmp6_input(struct mbuf **, int *, int);
746void icmp6_reflect(struct mbuf *, size_t);
747void icmp6_prepare(struct mbuf *);
748void icmp6_redirect_input(struct mbuf *, int, int);
749void icmp6_redirect_output(struct mbuf *, struct rtentry *);
750
751struct ip6ctlparam;
752void icmp6_mtudisc_update(struct ip6ctlparam *, int);
753
754extern lck_rw_t icmp6_ifs_rwlock;
755/* XXX: is this the right place for these macros? */
756/* N.B.: if_inet6data is never freed once set, so we don't need to lock */
757#define icmp6_ifstat_inc(_ifp, _tag) do { \
758 if (_ifp != NULL && IN6_IFEXTRA(_ifp) != NULL) { \
759 IN6_IFEXTRA(_ifp)->icmp6_ifstat._tag++; \
760 } \
761} while (0)
762
763#define icmp6_ifoutstat_inc(ifp, type, code) do { \
764 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
765 if (type < ICMP6_INFOMSG_MASK) \
766 icmp6_ifstat_inc(ifp, ifs6_out_error); \
767 switch (type) { \
768 case ICMP6_DST_UNREACH: \
769 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
770 if (code == ICMP6_DST_UNREACH_ADMIN) \
771 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib);\
772 break; \
773 case ICMP6_PACKET_TOO_BIG: \
774 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
775 break; \
776 case ICMP6_TIME_EXCEEDED: \
777 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
778 break; \
779 case ICMP6_PARAM_PROB: \
780 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
781 break; \
782 case ICMP6_ECHO_REQUEST: \
783 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
784 break; \
785 case ICMP6_ECHO_REPLY: \
786 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
787 break; \
788 case MLD_LISTENER_QUERY: \
789 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
790 break; \
791 case MLD_LISTENER_REPORT: \
792 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
793 break; \
794 case MLD_LISTENER_DONE: \
795 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
796 break; \
797 case ND_ROUTER_SOLICIT: \
798 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
799 break; \
800 case ND_ROUTER_ADVERT: \
801 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
802 break; \
803 case ND_NEIGHBOR_SOLICIT: \
804 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit);\
805 break; \
806 case ND_NEIGHBOR_ADVERT: \
807 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
808 break; \
809 case ND_REDIRECT: \
810 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
811 break; \
812 } \
813} while (0)
814
815#define ICMP6_REDIRACCEPT_DEFAULT 1
816extern int icmp6_rediraccept; /* accept/process redirects */
817extern int icmp6_redirtimeout; /* cache time for redirect routes */
818
819#define ICMP6_NODEINFO_FQDNOK 0x1
820#define ICMP6_NODEINFO_NODEADDROK 0x2
821#define ICMP6_NODEINFO_TMPADDROK 0x4
822#define ICMP6_NODEINFO_GLOBALOK 0x8
823
824#endif /* BSD_KERNEL_PRIVATE */
825
826#endif /* !_NETINET_ICMP6_H_ */
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