2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */
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61 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
64 #ifndef _NETINET_ICMP6_H_
65 #define _NETINET_ICMP6_H_
67 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
68 - sizeof(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 */
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 */
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 */
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 */
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 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */
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 */
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
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 */
120 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
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 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */
130 /* The definitions below are experimental. TBA */
131 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */
132 #define MLD_MTRACE 201 /* mtrace messages */
135 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP
136 #define MLD6_MTRACE MLD_MTRACE
139 #define ICMP6_MAXTYPE 201
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 */
148 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
149 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
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 */
155 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
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 */
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 */
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 */
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 */
174 * Multicast Listener Discovery
177 struct icmp6_hdr mld_icmp6_hdr;
178 struct in6_addr mld_addr; /* multicast address */
181 /* definitions to provide backward compatibility to old KAME applications */
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
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 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0]
199 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1]
205 struct nd_router_solicit { /* router solicitation */
206 struct icmp6_hdr nd_rs_hdr;
207 /* could be followed by options */
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]
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 */
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_HA 0x20
232 * Router preference values based on draft-draves-ipngwg-router-selection-01.
233 * These are non-standard definitions.
235 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
237 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
238 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
239 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
240 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
242 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
244 struct nd_neighbor_solicit { /* neighbor solicitation */
245 struct icmp6_hdr nd_ns_hdr;
246 struct in6_addr nd_ns_target; /*target address */
247 /* could be followed by options */
250 #define nd_ns_type nd_ns_hdr.icmp6_type
251 #define nd_ns_code nd_ns_hdr.icmp6_code
252 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
253 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
255 struct nd_neighbor_advert { /* neighbor advertisement */
256 struct icmp6_hdr nd_na_hdr;
257 struct in6_addr nd_na_target; /* target address */
258 /* could be followed by options */
261 #define nd_na_type nd_na_hdr.icmp6_type
262 #define nd_na_code nd_na_hdr.icmp6_code
263 #define nd_na_cksum nd_na_hdr.icmp6_cksum
264 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
265 #if BYTE_ORDER == BIG_ENDIAN
266 #define ND_NA_FLAG_ROUTER 0x80000000
267 #define ND_NA_FLAG_SOLICITED 0x40000000
268 #define ND_NA_FLAG_OVERRIDE 0x20000000
270 #if BYTE_ORDER == LITTLE_ENDIAN
271 #define ND_NA_FLAG_ROUTER 0x80
272 #define ND_NA_FLAG_SOLICITED 0x40
273 #define ND_NA_FLAG_OVERRIDE 0x20
277 struct nd_redirect { /* redirect */
278 struct icmp6_hdr nd_rd_hdr;
279 struct in6_addr nd_rd_target; /* target address */
280 struct in6_addr nd_rd_dst; /* destination address */
281 /* could be followed by options */
284 #define nd_rd_type nd_rd_hdr.icmp6_type
285 #define nd_rd_code nd_rd_hdr.icmp6_code
286 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
287 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
289 struct nd_opt_hdr { /* Neighbor discovery option header */
290 u_int8_t nd_opt_type;
292 /* followed by option specific data*/
295 #define ND_OPT_SOURCE_LINKADDR 1
296 #define ND_OPT_TARGET_LINKADDR 2
297 #define ND_OPT_PREFIX_INFORMATION 3
298 #define ND_OPT_REDIRECTED_HEADER 4
300 #define ND_OPT_NONCE 14 /* RFC 3971 */
301 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */
302 #define ND_OPT_RDNSS 25 /* RFC 6106 */
303 #define ND_OPT_DNSSL 31 /* RFC 6106 */
304 #define ND_OPT_MAX 31
306 struct nd_opt_prefix_info { /* prefix information */
307 u_int8_t nd_opt_pi_type;
308 u_int8_t nd_opt_pi_len;
309 u_int8_t nd_opt_pi_prefix_len;
310 u_int8_t nd_opt_pi_flags_reserved;
311 u_int32_t nd_opt_pi_valid_time;
312 u_int32_t nd_opt_pi_preferred_time;
313 u_int32_t nd_opt_pi_reserved2;
314 struct in6_addr nd_opt_pi_prefix;
317 #define ND_OPT_PI_FLAG_ONLINK 0x80
318 #define ND_OPT_PI_FLAG_AUTO 0x40
320 struct nd_opt_rd_hdr { /* redirected header */
321 u_int8_t nd_opt_rh_type;
322 u_int8_t nd_opt_rh_len;
323 u_int16_t nd_opt_rh_reserved1;
324 u_int32_t nd_opt_rh_reserved2;
325 /* followed by IP header and data */
328 struct nd_opt_mtu { /* MTU option */
329 u_int8_t nd_opt_mtu_type;
330 u_int8_t nd_opt_mtu_len;
331 u_int16_t nd_opt_mtu_reserved;
332 u_int32_t nd_opt_mtu_mtu;
335 #define ND_OPT_NONCE_LEN ((1 * 8) - 2)
336 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0
337 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8."
339 struct nd_opt_nonce { /* nonce option */
340 u_int8_t nd_opt_nonce_type;
341 u_int8_t nd_opt_nonce_len;
342 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN];
345 struct nd_opt_route_info { /* route info */
346 u_int8_t nd_opt_rti_type;
347 u_int8_t nd_opt_rti_len;
348 u_int8_t nd_opt_rti_prefixlen;
349 u_int8_t nd_opt_rti_flags;
350 u_int32_t nd_opt_rti_lifetime;
354 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */
355 u_int8_t nd_opt_rdnss_type;
356 u_int8_t nd_opt_rdnss_len;
357 u_int16_t nd_opt_rdnss_reserved;
358 u_int32_t nd_opt_rdnss_lifetime;
359 /* followed by list of recursive DNS servers */
362 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */
363 u_int8_t nd_opt_dnssl_type;
364 u_int8_t nd_opt_dnssl_len;
365 u_int16_t nd_opt_dnssl_reserved;
366 u_int32_t nd_opt_dnssl_lifetime;
367 /* followed by list of DNS search domains */
374 struct icmp6_namelookup {
375 struct icmp6_hdr icmp6_nl_hdr;
376 u_int8_t icmp6_nl_nonce[8];
377 int32_t icmp6_nl_ttl;
379 u_int8_t icmp6_nl_len;
380 u_int8_t icmp6_nl_name[3];
382 /* could be followed by options */
386 * icmp6 node information
388 struct icmp6_nodeinfo {
389 struct icmp6_hdr icmp6_ni_hdr;
390 u_int8_t icmp6_ni_nonce[8];
391 /* could be followed by reply data */
394 #define ni_type icmp6_ni_hdr.icmp6_type
395 #define ni_code icmp6_ni_hdr.icmp6_code
396 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
397 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
398 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
400 #define NI_QTYPE_NOOP 0 /* NOOP */
401 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
402 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
403 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
404 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
405 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
407 #if BYTE_ORDER == BIG_ENDIAN
408 #define NI_SUPTYPE_FLAG_COMPRESS 0x1
409 #define NI_FQDN_FLAG_VALIDTTL 0x1
410 #elif BYTE_ORDER == LITTLE_ENDIAN
411 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100
412 #define NI_FQDN_FLAG_VALIDTTL 0x0100
415 #ifdef NAME_LOOKUPS_04
416 #if BYTE_ORDER == BIG_ENDIAN
417 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1
418 #define NI_NODEADDR_FLAG_SITELOCAL 0x2
419 #define NI_NODEADDR_FLAG_GLOBAL 0x4
420 #define NI_NODEADDR_FLAG_ALL 0x8
421 #define NI_NODEADDR_FLAG_TRUNCATE 0x10
422 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
423 #elif BYTE_ORDER == LITTLE_ENDIAN
424 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
425 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200
426 #define NI_NODEADDR_FLAG_GLOBAL 0x0400
427 #define NI_NODEADDR_FLAG_ALL 0x0800
428 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000
429 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
431 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
432 #if BYTE_ORDER == BIG_ENDIAN
433 #define NI_NODEADDR_FLAG_TRUNCATE 0x1
434 #define NI_NODEADDR_FLAG_ALL 0x2
435 #define NI_NODEADDR_FLAG_COMPAT 0x4
436 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8
437 #define NI_NODEADDR_FLAG_SITELOCAL 0x10
438 #define NI_NODEADDR_FLAG_GLOBAL 0x20
439 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
440 #elif BYTE_ORDER == LITTLE_ENDIAN
441 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100
442 #define NI_NODEADDR_FLAG_ALL 0x0200
443 #define NI_NODEADDR_FLAG_COMPAT 0x0400
444 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
445 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000
446 #define NI_NODEADDR_FLAG_GLOBAL 0x2000
447 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
451 struct ni_reply_fqdn {
452 u_int32_t ni_fqdn_ttl; /* TTL */
453 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
454 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
458 * Router Renumbering. as router-renum-08.txt
460 struct icmp6_router_renum { /* router renumbering header */
461 struct icmp6_hdr rr_hdr;
464 u_int16_t rr_maxdelay;
465 u_int32_t rr_reserved;
468 #define ICMP6_RR_FLAGS_TEST 0x80
469 #define ICMP6_RR_FLAGS_REQRESULT 0x40
470 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
471 #define ICMP6_RR_FLAGS_SPECSITE 0x10
472 #define ICMP6_RR_FLAGS_PREVDONE 0x08
474 #define rr_type rr_hdr.icmp6_type
475 #define rr_code rr_hdr.icmp6_code
476 #define rr_cksum rr_hdr.icmp6_cksum
477 #define rr_seqnum rr_hdr.icmp6_data32[0]
479 struct rr_pco_match { /* match prefix part */
482 u_int8_t rpm_ordinal;
483 u_int8_t rpm_matchlen;
486 u_int16_t rpm_reserved;
487 struct in6_addr rpm_prefix;
490 #define RPM_PCO_ADD 1
491 #define RPM_PCO_CHANGE 2
492 #define RPM_PCO_SETGLOBAL 3
493 #define RPM_PCO_MAX 4
495 struct rr_pco_use { /* use prefix part */
497 u_int8_t rpu_keeplen;
499 u_int8_t rpu_raflags;
500 u_int32_t rpu_vltime;
501 u_int32_t rpu_pltime;
503 struct in6_addr rpu_prefix;
505 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
506 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
508 #if BYTE_ORDER == BIG_ENDIAN
509 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
510 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
511 #elif BYTE_ORDER == LITTLE_ENDIAN
512 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
513 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
516 struct rr_result { /* router renumbering result message */
518 u_int8_t rrr_ordinal;
519 u_int8_t rrr_matchedlen;
521 struct in6_addr rrr_prefix;
523 #if BYTE_ORDER == BIG_ENDIAN
524 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
525 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
526 #elif BYTE_ORDER == LITTLE_ENDIAN
527 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
528 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
532 * icmp6 filter structures.
535 struct icmp6_filter {
536 u_int32_t icmp6_filt[8];
540 #define ICMP6_FILTER_SETPASSALL(filterp) \
543 p = (u_char *)filterp; \
544 for (i = 0; i < sizeof(struct icmp6_filter); i++) \
546 } while (/*CONSTCOND*/ 0)
547 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
548 bzero(filterp, sizeof(struct icmp6_filter))
550 #define ICMP6_FILTER_SETPASSALL(filterp) \
551 memset(filterp, 0xff, sizeof(struct icmp6_filter))
552 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
553 memset(filterp, 0x00, sizeof(struct icmp6_filter))
556 #define ICMP6_FILTER_SETPASS(type, filterp) \
557 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
558 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
559 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
560 #define ICMP6_FILTER_WILLPASS(type, filterp) \
561 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
562 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
563 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
566 * Variables related to this implementation
567 * of the internet control message protocol version 6.
569 struct icmp6errstat {
570 uint64_t icp6errs_dst_unreach_noroute;
571 uint64_t icp6errs_dst_unreach_admin;
572 uint64_t icp6errs_dst_unreach_beyondscope;
573 uint64_t icp6errs_dst_unreach_addr;
574 uint64_t icp6errs_dst_unreach_noport;
575 uint64_t icp6errs_packet_too_big;
576 uint64_t icp6errs_time_exceed_transit;
577 uint64_t icp6errs_time_exceed_reassembly;
578 uint64_t icp6errs_paramprob_header;
579 uint64_t icp6errs_paramprob_nextheader;
580 uint64_t icp6errs_paramprob_option;
581 uint64_t icp6errs_redirect; /* we regard redirect as an error here */
582 uint64_t icp6errs_unknown;
586 /* statistics related to icmp6 packets generated */
587 uint64_t icp6s_error; /* # of calls to icmp6_error */
588 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */
589 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */
590 uint64_t icp6s_outhist[256];
591 /* statistics related to input message processed */
592 uint64_t icp6s_badcode; /* icmp6_code out of range */
593 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
594 uint64_t icp6s_checksum; /* bad checksum */
595 uint64_t icp6s_badlen; /* calculated bound mismatch */
597 * number of responses: this member is inherited from netinet code, but
598 * for netinet6 code, it is already available in icp6s_outhist[].
600 uint64_t icp6s_reflect;
601 uint64_t icp6s_inhist[256];
602 uint64_t icp6s_nd_toomanyopt; /* too many ND options */
603 struct icmp6errstat icp6s_outerrhist;
604 #define icp6s_odst_unreach_noroute \
605 icp6s_outerrhist.icp6errs_dst_unreach_noroute
606 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
607 #define icp6s_odst_unreach_beyondscope \
608 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
609 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
610 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
611 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
612 #define icp6s_otime_exceed_transit \
613 icp6s_outerrhist.icp6errs_time_exceed_transit
614 #define icp6s_otime_exceed_reassembly \
615 icp6s_outerrhist.icp6errs_time_exceed_reassembly
616 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
617 #define icp6s_oparamprob_nextheader \
618 icp6s_outerrhist.icp6errs_paramprob_nextheader
619 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
620 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
621 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
622 uint64_t icp6s_pmtuchg; /* path MTU changes */
623 uint64_t icp6s_nd_badopt; /* bad ND options */
624 uint64_t icp6s_badns; /* bad neighbor solicitation */
625 uint64_t icp6s_badna; /* bad neighbor advertisement */
626 uint64_t icp6s_badrs; /* bad router solicitation */
627 uint64_t icp6s_badra; /* bad router advertisement */
628 uint64_t icp6s_badredirect; /* bad redirect message */
632 #include <sys/counter.h>
634 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat);
636 * In-kernel consumers can use these accessor macros directly to update
639 #define ICMP6STAT_ADD(name, val) \
640 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val))
641 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1)
644 * Kernel module consumers must use this accessor macro.
646 void kmod_icmp6stat_inc(int statnum);
647 #define KMOD_ICMP6STAT_INC(name) \
648 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t))
652 * Names for ICMP sysctl objects
654 #define ICMPV6CTL_STATS 1
655 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
656 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
658 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
660 #define ICMPV6CTL_ND6_PRUNE 6
661 #define ICMPV6CTL_ND6_DELAY 8
662 #define ICMPV6CTL_ND6_UMAXTRIES 9
663 #define ICMPV6CTL_ND6_MMAXTRIES 10
664 #define ICMPV6CTL_ND6_USELOOPBACK 11
665 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
666 #define ICMPV6CTL_NODEINFO 13
667 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
668 #define ICMPV6CTL_ND6_MAXNUDHINT 15
669 #define ICMPV6CTL_MTUDISC_HIWAT 16
670 #define ICMPV6CTL_MTUDISC_LOWAT 17
671 #define ICMPV6CTL_ND6_DEBUG 18
672 #define ICMPV6CTL_ND6_DRLIST 19
673 #define ICMPV6CTL_ND6_PRLIST 20
674 #define ICMPV6CTL_MLD_MAXSRCFILTER 21
675 #define ICMPV6CTL_MLD_SOMAXSRC 22
676 #define ICMPV6CTL_MLD_VERSION 23
677 #define ICMPV6CTL_ND6_MAXQLEN 24
678 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25
679 #define ICMPV6CTL_MAXID 26
681 #define RTF_PROBEMTU RTF_PROTO1
689 void icmp6_paramerror(struct mbuf *, int);
690 void icmp6_error(struct mbuf *, int, int, int);
691 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *);
692 int icmp6_input(struct mbuf **, int *, int);
693 void icmp6_fasttimo(void);
694 void icmp6_slowtimo(void);
695 void icmp6_reflect(struct mbuf *, size_t);
696 void icmp6_prepare(struct mbuf *);
697 void icmp6_redirect_input(struct mbuf *, int);
698 void icmp6_redirect_output(struct mbuf *, struct rtentry *);
701 void icmp6_mtudisc_update(struct ip6ctlparam *, int);
703 /* XXX: is this the right place for these macros? */
704 #define icmp6_ifstat_inc(ifp, tag) \
707 counter_u64_add(((struct in6_ifextra *) \
708 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\
709 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\
710 } while (/*CONSTCOND*/ 0)
712 #define icmp6_ifoutstat_inc(ifp, type, code) \
714 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
715 if (type < ICMP6_INFOMSG_MASK) \
716 icmp6_ifstat_inc(ifp, ifs6_out_error); \
718 case ICMP6_DST_UNREACH: \
719 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
720 if (code == ICMP6_DST_UNREACH_ADMIN) \
721 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
723 case ICMP6_PACKET_TOO_BIG: \
724 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
726 case ICMP6_TIME_EXCEEDED: \
727 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
729 case ICMP6_PARAM_PROB: \
730 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
732 case ICMP6_ECHO_REQUEST: \
733 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
735 case ICMP6_ECHO_REPLY: \
736 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
738 case MLD_LISTENER_QUERY: \
739 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
741 case MLD_LISTENER_REPORT: \
742 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
744 case MLD_LISTENER_DONE: \
745 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
747 case ND_ROUTER_SOLICIT: \
748 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
750 case ND_ROUTER_ADVERT: \
751 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
753 case ND_NEIGHBOR_SOLICIT: \
754 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
756 case ND_NEIGHBOR_ADVERT: \
757 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
760 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
763 } while (/*CONSTCOND*/ 0)
765 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */
766 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */
768 #define V_icmp6_rediraccept VNET(icmp6_rediraccept)
769 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout)
771 #define ICMP6_NODEINFO_FQDNOK 0x1
772 #define ICMP6_NODEINFO_NODEADDROK 0x2
773 #define ICMP6_NODEINFO_TMPADDROK 0x4
774 #define ICMP6_NODEINFO_GLOBALOK 0x8
777 #endif /* not _NETINET_ICMP6_H_ */