1 /* $OpenBSD: icmp6.h,v 1.53 2024/05/13 01:15:53 jsg Exp $ */
2 /* $KAME: icmp6.h,v 1.84 2003/04/23 10:26:51 itojun Exp $ */
3
4 /*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /*
34 * Copyright (c) 1982, 1986, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
62 */
63
64 #ifndef _NETINET_ICMP6_H_
65 #define _NETINET_ICMP6_H_
66
67 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
68 - sizeof(struct icmp6_hdr) */
69
70 struct icmp6_hdr {
71 u_int8_t icmp6_type; /* type field */
72 u_int8_t icmp6_code; /* code field */
73 u_int16_t icmp6_cksum; /* checksum field */
74 union {
75 u_int32_t icmp6_un_data32[1]; /* type-specific field */
76 u_int16_t icmp6_un_data16[2]; /* type-specific field */
77 u_int8_t icmp6_un_data8[4]; /* type-specific field */
78 } icmp6_dataun;
79 } __packed;
80
81 #define icmp6_data32 icmp6_dataun.icmp6_un_data32
82 #define icmp6_data16 icmp6_dataun.icmp6_un_data16
83 #define icmp6_data8 icmp6_dataun.icmp6_un_data8
84 #define icmp6_pptr icmp6_data32[0] /* parameter prob */
85 #define icmp6_mtu icmp6_data32[0] /* packet too big */
86 #define icmp6_id icmp6_data16[0] /* echo request/reply */
87 #define icmp6_seq icmp6_data16[1] /* echo request/reply */
88 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
89
90 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
91 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
92 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
93 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
94
95 #define ICMP6_ECHO_REQUEST 128 /* echo service */
96 #define ICMP6_ECHO_REPLY 129 /* echo reply */
97 #define MLD_LISTENER_QUERY 130 /* multicast listener query */
98 #define MLD_LISTENER_REPORT 131 /* multicast listener report */
99 #define MLD_LISTENER_DONE 132 /* multicast listener done */
100
101 /* RFC2292 decls */
102 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
103 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
104 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
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 MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */
121
122 /* The definitions below are experimental. TBA */
123 #define MLD_MTRACE_RESP 200 /* mtrace response(to sender) */
124 #define MLD_MTRACE 201 /* mtrace messages */
125
126 #define ICMP6_MAXTYPE 201
127
128 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
129 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
130 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
131 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
132 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
133
134 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
135 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
136
137 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
138 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
139 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
140
141 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
142
143 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
144 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
145 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
146
147 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
148 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
149 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
150
151 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
152 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
153 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
154
155 /* Used in kernel only */
156 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
157 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
158
159 /*
160 * Multicast Listener Discovery
161 */
162 struct mld_hdr {
163 struct icmp6_hdr mld_icmp6_hdr;
164 struct in6_addr mld_addr; /* multicast address */
165 } __packed;
166
167 /* shortcut macro definitions */
168 #define mld_type mld_icmp6_hdr.icmp6_type
169 #define mld_code mld_icmp6_hdr.icmp6_code
170 #define mld_cksum mld_icmp6_hdr.icmp6_cksum
171 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
172 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
173
174 /*
175 * Neighbor Discovery
176 */
177
178 struct nd_router_solicit { /* router solicitation */
179 struct icmp6_hdr nd_rs_hdr;
180 /* could be followed by options */
181 } __packed;
182
183 #define nd_rs_type nd_rs_hdr.icmp6_type
184 #define nd_rs_code nd_rs_hdr.icmp6_code
185 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
186 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
187
188 struct nd_router_advert { /* router advertisement */
189 struct icmp6_hdr nd_ra_hdr;
190 u_int32_t nd_ra_reachable; /* reachable time */
191 u_int32_t nd_ra_retransmit; /* retransmit timer */
192 /* could be followed by options */
193 } __packed;
194
195 #define nd_ra_type nd_ra_hdr.icmp6_type
196 #define nd_ra_code nd_ra_hdr.icmp6_code
197 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
198 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
199 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
200 #define ND_RA_FLAG_MANAGED 0x80
201 #define ND_RA_FLAG_OTHER 0x40
202
203 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
204
205 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
206 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
207 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
208 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
209
210 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
211
212 struct nd_neighbor_solicit { /* neighbor solicitation */
213 struct icmp6_hdr nd_ns_hdr;
214 struct in6_addr nd_ns_target; /*target address */
215 /* could be followed by options */
216 } __packed;
217
218 #define nd_ns_type nd_ns_hdr.icmp6_type
219 #define nd_ns_code nd_ns_hdr.icmp6_code
220 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
221 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
222
223 struct nd_neighbor_advert { /* neighbor advertisement */
224 struct icmp6_hdr nd_na_hdr;
225 struct in6_addr nd_na_target; /* target address */
226 /* could be followed by options */
227 } __packed;
228
229 #define nd_na_type nd_na_hdr.icmp6_type
230 #define nd_na_code nd_na_hdr.icmp6_code
231 #define nd_na_cksum nd_na_hdr.icmp6_cksum
232 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
233 #define ND_NA_FLAG_ROUTER htonl(0x80000000)
234 #define ND_NA_FLAG_SOLICITED htonl(0x40000000)
235 #define ND_NA_FLAG_OVERRIDE htonl(0x20000000)
236
237 struct nd_redirect { /* redirect */
238 struct icmp6_hdr nd_rd_hdr;
239 struct in6_addr nd_rd_target; /* target address */
240 struct in6_addr nd_rd_dst; /* destination address */
241 /* could be followed by options */
242 } __packed;
243
244 #define nd_rd_type nd_rd_hdr.icmp6_type
245 #define nd_rd_code nd_rd_hdr.icmp6_code
246 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
247 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
248
249 struct nd_opt_hdr { /* Neighbor discovery option header */
250 u_int8_t nd_opt_type;
251 u_int8_t nd_opt_len;
252 /* followed by option specific data*/
253 } __packed;
254
255 #define ND_OPT_SOURCE_LINKADDR 1
256 #define ND_OPT_TARGET_LINKADDR 2
257 #define ND_OPT_PREFIX_INFORMATION 3
258 #define ND_OPT_REDIRECTED_HEADER 4
259 #define ND_OPT_MTU 5
260 #define ND_OPT_ROUTE_INFO 24
261 #define ND_OPT_RDNSS 25
262 #define ND_OPT_DNSSL 31
263
264 struct nd_opt_prefix_info { /* prefix information */
265 u_int8_t nd_opt_pi_type;
266 u_int8_t nd_opt_pi_len;
267 u_int8_t nd_opt_pi_prefix_len;
268 u_int8_t nd_opt_pi_flags_reserved;
269 u_int32_t nd_opt_pi_valid_time;
270 u_int32_t nd_opt_pi_preferred_time;
271 u_int32_t nd_opt_pi_reserved2;
272 struct in6_addr nd_opt_pi_prefix;
273 } __packed;
274
275 #define ND_OPT_PI_FLAG_ONLINK 0x80
276 #define ND_OPT_PI_FLAG_AUTO 0x40
277
278 struct nd_opt_rd_hdr { /* redirected header */
279 u_int8_t nd_opt_rh_type;
280 u_int8_t nd_opt_rh_len;
281 u_int16_t nd_opt_rh_reserved1;
282 u_int32_t nd_opt_rh_reserved2;
283 /* followed by IP header and data */
284 } __packed;
285
286 struct nd_opt_mtu { /* MTU option */
287 u_int8_t nd_opt_mtu_type;
288 u_int8_t nd_opt_mtu_len;
289 u_int16_t nd_opt_mtu_reserved;
290 u_int32_t nd_opt_mtu_mtu;
291 } __packed;
292
293 struct nd_opt_route_info { /* route info */
294 u_int8_t nd_opt_rti_type;
295 u_int8_t nd_opt_rti_len;
296 u_int8_t nd_opt_rti_prefixlen;
297 u_int8_t nd_opt_rti_flags;
298 u_int32_t nd_opt_rti_lifetime;
299 } __packed;
300
301 struct nd_opt_rdnss { /* RDNSS option */
302 u_int8_t nd_opt_rdnss_type;
303 u_int8_t nd_opt_rdnss_len;
304 u_int16_t nd_opt_rdnss_reserved;
305 u_int32_t nd_opt_rdnss_lifetime;
306 /* followed by list of recursive DNS servers */
307 } __packed;
308
309 struct nd_opt_dnssl { /* DNSSL option */
310 u_int8_t nd_opt_dnssl_type;
311 u_int8_t nd_opt_dnssl_len;
312 u_int16_t nd_opt_dnssl_reserved;
313 u_int32_t nd_opt_dnssl_lifetime;
314 /* followed by list of DNS search domains */
315 } __packed;
316
317 /*
318 * icmp6 namelookup
319 */
320 struct icmp6_namelookup {
321 struct icmp6_hdr icmp6_nl_hdr;
322 u_int8_t icmp6_nl_nonce[8];
323 int32_t icmp6_nl_ttl;
324 #if 0
325 u_int8_t icmp6_nl_len;
326 u_int8_t icmp6_nl_name[3];
327 #endif
328 /* could be followed by options */
329 } __packed;
330
331 /*
332 * icmp6 node information
333 */
334 struct icmp6_nodeinfo {
335 struct icmp6_hdr icmp6_ni_hdr;
336 u_int8_t icmp6_ni_nonce[8];
337 /* could be followed by reply data */
338 } __packed;
339
340 #define ni_type icmp6_ni_hdr.icmp6_type
341 #define ni_code icmp6_ni_hdr.icmp6_code
342 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
343 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
344 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
345
346 #define NI_QTYPE_NOOP 0 /* NOOP */
347 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
348 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
349 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
350 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
351 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
352
353 #define NI_SUPTYPE_FLAG_COMPRESS htons(0x0001)
354 #define NI_FQDN_FLAG_VALIDTTL htons(0x0001)
355
356 #define NI_NODEADDR_FLAG_TRUNCATE htons(0x0001)
357 #define NI_NODEADDR_FLAG_ALL htons(0x0002)
358 #define NI_NODEADDR_FLAG_COMPAT htons(0x0004)
359 #define NI_NODEADDR_FLAG_LINKLOCAL htons(0x0008)
360 #define NI_NODEADDR_FLAG_SITELOCAL htons(0x0010)
361 #define NI_NODEADDR_FLAG_GLOBAL htons(0x0020)
362 #define NI_NODEADDR_FLAG_ANYCAST htons(0x0040) /* not in spec */
363
364 struct ni_reply_fqdn {
365 u_int32_t ni_fqdn_ttl; /* TTL */
366 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
367 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
368 } __packed;
369
370 /*
371 * Router Renumbering. as router-renum-08.txt
372 */
373 struct icmp6_router_renum { /* router renumbering header */
374 struct icmp6_hdr rr_hdr;
375 u_int8_t rr_segnum;
376 u_int8_t rr_flags;
377 u_int16_t rr_maxdelay;
378 u_int32_t rr_reserved;
379 } __packed;
380
381 #define ICMP6_RR_FLAGS_TEST 0x80
382 #define ICMP6_RR_FLAGS_REQRESULT 0x40
383 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
384 #define ICMP6_RR_FLAGS_SPECSITE 0x10
385 #define ICMP6_RR_FLAGS_PREVDONE 0x08
386
387 #define rr_type rr_hdr.icmp6_type
388 #define rr_code rr_hdr.icmp6_code
389 #define rr_cksum rr_hdr.icmp6_cksum
390 #define rr_seqnum rr_hdr.icmp6_data32[0]
391
392 struct rr_pco_match { /* match prefix part */
393 u_int8_t rpm_code;
394 u_int8_t rpm_len;
395 u_int8_t rpm_ordinal;
396 u_int8_t rpm_matchlen;
397 u_int8_t rpm_minlen;
398 u_int8_t rpm_maxlen;
399 u_int16_t rpm_reserved;
400 struct in6_addr rpm_prefix;
401 } __packed;
402
403 #define RPM_PCO_ADD 1
404 #define RPM_PCO_CHANGE 2
405 #define RPM_PCO_SETGLOBAL 3
406 #define RPM_PCO_MAX 4
407
408 struct rr_pco_use { /* use prefix part */
409 u_int8_t rpu_uselen;
410 u_int8_t rpu_keeplen;
411 u_int8_t rpu_ramask;
412 u_int8_t rpu_raflags;
413 u_int32_t rpu_vltime;
414 u_int32_t rpu_pltime;
415 u_int32_t rpu_flags;
416 struct in6_addr rpu_prefix;
417 } __packed;
418 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
419 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
420
421 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME htonl(0x80000000)
422 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME htonl(0x40000000)
423
424 struct rr_result { /* router renumbering result message */
425 u_int16_t rrr_flags;
426 u_int8_t rrr_ordinal;
427 u_int8_t rrr_matchedlen;
428 u_int32_t rrr_ifid;
429 struct in6_addr rrr_prefix;
430 } __packed;
431 #define ICMP6_RR_RESULT_FLAGS_OOB htons(0x0002)
432 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN htons(0x0001)
433
434 /*
435 * icmp6 filter structures.
436 */
437
438 struct icmp6_filter {
439 u_int32_t icmp6_filt[8];
440 };
441
442 #define ICMP6_FILTER_SETPASSALL(filterp) \
443 memset(filterp, 0xff, sizeof(struct icmp6_filter))
444 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
445 memset(filterp, 0x00, sizeof(struct icmp6_filter))
446 #define ICMP6_FILTER_SETPASS(type, filterp) \
447 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
448 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
449 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
450 #define ICMP6_FILTER_WILLPASS(type, filterp) \
451 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
452 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
453 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
454
455 /*
456 * Variables related to this implementation
457 * of the internet control message protocol version 6.
458 */
459 struct icmp6stat {
460 /* statistics related to icmp6 packets generated */
461 u_int64_t icp6s_error; /* # of calls to icmp6_error */
462 u_int64_t icp6s_canterror; /* no error because old was icmp */
463 u_int64_t icp6s_toofreq; /* no error because rate limitation */
464 u_int64_t icp6s_outhist[256];
465 /* statistics related to input message processed */
466 u_int64_t icp6s_badcode; /* icmp6_code out of range */
467 u_int64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
468 u_int64_t icp6s_checksum; /* bad checksum */
469 u_int64_t icp6s_badlen; /* calculated bound mismatch */
470 /*
471 * number of responses: this member is inherited from netinet code, but
472 * for netinet6 code, it is already available in icp6s_outhist[].
473 */
474 u_int64_t icp6s_reflect;
475 u_int64_t icp6s_inhist[256];
476 u_int64_t icp6s_nd_toomanyopt; /* too many ND options */
477 u_int64_t icp6s_odst_unreach_noroute;
478 u_int64_t icp6s_odst_unreach_admin;
479 u_int64_t icp6s_odst_unreach_beyondscope;
480 u_int64_t icp6s_odst_unreach_addr;
481 u_int64_t icp6s_odst_unreach_noport;
482 u_int64_t icp6s_opacket_too_big;
483 u_int64_t icp6s_otime_exceed_transit;
484 u_int64_t icp6s_otime_exceed_reassembly;
485 u_int64_t icp6s_oparamprob_header;
486 u_int64_t icp6s_oparamprob_nextheader;
487 u_int64_t icp6s_oparamprob_option;
488 u_int64_t icp6s_oredirect; /* we regard redirect as an error here */
489 u_int64_t icp6s_ounknown;
490 u_int64_t icp6s_pmtuchg; /* path MTU changes */
491 u_int64_t icp6s_nd_badopt; /* bad ND options */
492 u_int64_t icp6s_badns; /* bad neighbor solicitation */
493 u_int64_t icp6s_badna; /* bad neighbor advertisement */
494 u_int64_t icp6s_badrs; /* bad router advertisement */
495 u_int64_t icp6s_badra; /* bad router advertisement */
496 u_int64_t icp6s_badredirect; /* bad redirect message */
497 };
498
499 /*
500 * Names for ICMP sysctl objects
501 */
502 #define ICMPV6CTL_STATS 1
503 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
504 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
505 #define ICMPV6CTL_ND6_DELAY 8
506 #define ICMPV6CTL_ND6_UMAXTRIES 9
507 #define ICMPV6CTL_ND6_MMAXTRIES 10
508 #define ICMPV6CTL_ND6_QUEUED 11
509 #define ICMPV6CTL_NODEINFO 13
510 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
511 #define ICMPV6CTL_ND6_MAXNUDHINT 15
512 #define ICMPV6CTL_MTUDISC_HIWAT 16
513 #define ICMPV6CTL_MTUDISC_LOWAT 17
514 #define ICMPV6CTL_ND6_DEBUG 18
515 #define ICMPV6CTL_MAXID 19
516
517 #define ICMPV6CTL_NAMES { \
518 { 0, 0 }, \
519 { 0, 0 }, \
520 { 0, 0 }, \
521 { "redirtimeout", CTLTYPE_INT }, \
522 { 0, 0 }, \
523 { 0, 0 }, \
524 { 0, 0 }, \
525 { 0, 0 }, \
526 { "nd6_delay", CTLTYPE_INT }, \
527 { "nd6_umaxtries", CTLTYPE_INT }, \
528 { "nd6_mmaxtries", CTLTYPE_INT }, \
529 { "nd6_queued", CTLTYPE_INT }, \
530 { 0, 0 }, \
531 { 0, 0 }, \
532 { "errppslimit", CTLTYPE_INT }, \
533 { "nd6_maxnudhint", CTLTYPE_INT }, \
534 { "mtudisc_hiwat", CTLTYPE_INT }, \
535 { "mtudisc_lowat", CTLTYPE_INT }, \
536 { "nd6_debug", CTLTYPE_INT }, \
537 }
538
539 #define RTF_PROBEMTU RTF_PROTO1
540
541 #ifdef _KERNEL
542
543 #include <sys/percpu.h>
544
545 enum icmp6stat_counters {
546 icp6s_error,
547 icp6s_canterror,
548 icp6s_toofreq,
549 icp6s_outhist,
550 icp6s_badcode = icp6s_outhist + 256,
551 icp6s_tooshort,
552 icp6s_checksum,
553 icp6s_badlen,
554 icp6s_reflect,
555 icp6s_inhist,
556 icp6s_nd_toomanyopt = icp6s_inhist + 256,
557 icp6s_odst_unreach_noroute,
558 icp6s_odst_unreach_admin,
559 icp6s_odst_unreach_beyondscope,
560 icp6s_odst_unreach_addr,
561 icp6s_odst_unreach_noport,
562 icp6s_opacket_too_big,
563 icp6s_otime_exceed_transit,
564 icp6s_otime_exceed_reassembly,
565 icp6s_oparamprob_header,
566 icp6s_oparamprob_nextheader,
567 icp6s_oparamprob_option,
568 icp6s_oredirect,
569 icp6s_ounknown,
570 icp6s_pmtuchg,
571 icp6s_nd_badopt,
572 icp6s_badns,
573 icp6s_badna,
574 icp6s_badrs,
575 icp6s_badra,
576 icp6s_badredirect,
577 icp6s_ncounters,
578 };
579
580 extern struct cpumem *icmp6counters;
581
582 static inline void
icmp6stat_inc(enum icmp6stat_counters c)583 icmp6stat_inc(enum icmp6stat_counters c)
584 {
585 counters_inc(icmp6counters, c);
586 }
587
588 struct rtentry;
589 struct rttimer;
590 struct in6_multi;
591
592 void icmp6_init(void);
593 struct mbuf *icmp6_do_error(struct mbuf *, int, int, int);
594 void icmp6_error(struct mbuf *, int, int, int);
595 int icmp6_input(struct mbuf **, int *, int, int);
596 void icmp6_fasttimo(void);
597 int icmp6_reflect(struct mbuf **, size_t, struct sockaddr *);
598 void icmp6_redirect_input(struct mbuf *, int);
599 void icmp6_redirect_output(struct mbuf *, struct rtentry *);
600 int icmp6_sysctl(int *, u_int, void *, size_t *, void *, size_t);
601 struct rtentry *icmp6_mtudisc_clone(struct sockaddr_in6 *, u_int, int);
602
603 struct ip6ctlparam;
604 void icmp6_mtudisc_update(struct ip6ctlparam *, int);
605 void icmp6_mtudisc_callback_register(void (*)(struct sockaddr_in6 *, u_int));
606
607 extern int icmp6_redirtimeout; /* cache time for redirect routes */
608
609 #endif /* _KERNEL */
610 #endif /* _NETINET_ICMP6_H_ */
611