2 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */
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63 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
66 #ifndef _NETINET_ICMP6_H_
67 #define _NETINET_ICMP6_H_
69 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr)
70 - sizeof(struct icmp6_hdr) */
73 u_int8_t icmp6_type; /* type field */
74 u_int8_t icmp6_code; /* code field */
75 u_int16_t icmp6_cksum; /* checksum field */
77 u_int32_t icmp6_un_data32[1]; /* type-specific field */
78 u_int16_t icmp6_un_data16[2]; /* type-specific field */
79 u_int8_t icmp6_un_data8[4]; /* type-specific field */
83 #define icmp6_data32 icmp6_dataun.icmp6_un_data32
84 #define icmp6_data16 icmp6_dataun.icmp6_un_data16
85 #define icmp6_data8 icmp6_dataun.icmp6_un_data8
86 #define icmp6_pptr icmp6_data32[0] /* parameter prob */
87 #define icmp6_mtu icmp6_data32[0] /* packet too big */
88 #define icmp6_id icmp6_data16[0] /* echo request/reply */
89 #define icmp6_seq icmp6_data16[1] /* echo request/reply */
90 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
92 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
93 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
94 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
95 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
97 #define ICMP6_ECHO_REQUEST 128 /* echo service */
98 #define ICMP6_ECHO_REPLY 129 /* echo reply */
99 #define MLD_LISTENER_QUERY 130 /* multicast listener query */
100 #define MLD_LISTENER_REPORT 131 /* multicast listener report */
101 #define MLD_LISTENER_DONE 132 /* multicast listener done */
102 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* RFC3542 definition */
105 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
106 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
107 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
110 /* the followings are for backward compatibility to old KAME apps. */
111 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY
112 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT
113 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE
116 #define ND_ROUTER_SOLICIT 133 /* router solicitation */
117 #define ND_ROUTER_ADVERT 134 /* router advertisement */
118 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
119 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
120 #define ND_REDIRECT 137 /* redirect */
122 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
124 #define ICMP6_WRUREQUEST 139 /* who are you request */
125 #define ICMP6_WRUREPLY 140 /* who are you reply */
126 #define ICMP6_FQDN_QUERY 139 /* FQDN query */
127 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
128 #define ICMP6_NI_QUERY 139 /* node information request */
129 #define ICMP6_NI_REPLY 140 /* node information reply */
130 #define MLDV2_LISTENER_REPORT 143 /* RFC3810 listener report */
132 /* The definitions below are experimental. TBA */
133 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */
134 #define MLD_MTRACE 201 /* mtrace messages */
137 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP
138 #define MLD6_MTRACE MLD_MTRACE
141 #define ICMP6_MAXTYPE 201
143 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
144 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
145 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
146 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
147 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
148 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
149 #define ICMP6_DST_UNREACH_POLICY 5 /* failed ingress/egress policy */
150 #define ICMP6_DST_UNREACH_REJECT 6 /* Reject route to destination */
151 #define ICMP6_DST_UNREACH_SRCROUTE 7 /* Error in source routing header */
153 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
154 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
156 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
157 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
158 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
160 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
162 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
163 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
164 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
166 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
167 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
168 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
170 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
171 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
172 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
174 /* Used in kernel only */
175 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
176 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
179 * Multicast Listener Discovery
182 struct icmp6_hdr mld_icmp6_hdr;
183 struct in6_addr mld_addr; /* multicast address */
186 /* definitions to provide backward compatibility to old KAME applications */
188 #define mld6_hdr mld_hdr
189 #define mld6_type mld_type
190 #define mld6_code mld_code
191 #define mld6_cksum mld_cksum
192 #define mld6_maxdelay mld_maxdelay
193 #define mld6_reserved mld_reserved
194 #define mld6_addr mld_addr
197 /* shortcut macro definitions */
198 #define mld_type mld_icmp6_hdr.icmp6_type
199 #define mld_code mld_icmp6_hdr.icmp6_code
200 #define mld_cksum mld_icmp6_hdr.icmp6_cksum
201 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0]
202 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1]
203 #define mld_v2_reserved mld_icmp6_hdr.icmp6_data16[0]
204 #define mld_v2_numrecs mld_icmp6_hdr.icmp6_data16[1]
210 struct nd_router_solicit { /* router solicitation */
211 struct icmp6_hdr nd_rs_hdr;
212 /* could be followed by options */
215 #define nd_rs_type nd_rs_hdr.icmp6_type
216 #define nd_rs_code nd_rs_hdr.icmp6_code
217 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
218 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
220 struct nd_router_advert { /* router advertisement */
221 struct icmp6_hdr nd_ra_hdr;
222 u_int32_t nd_ra_reachable; /* reachable time */
223 u_int32_t nd_ra_retransmit; /* retransmit timer */
224 /* could be followed by options */
227 #define nd_ra_type nd_ra_hdr.icmp6_type
228 #define nd_ra_code nd_ra_hdr.icmp6_code
229 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
230 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
231 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
232 #define ND_RA_FLAG_MANAGED 0x80
233 #define ND_RA_FLAG_OTHER 0x40
234 #define ND_RA_FLAG_HA 0x20
237 * Router preference values based on draft-draves-ipngwg-router-selection-01.
238 * These are non-standard definitions.
240 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
242 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
243 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
244 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
245 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
247 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
249 struct nd_neighbor_solicit { /* neighbor solicitation */
250 struct icmp6_hdr nd_ns_hdr;
251 struct in6_addr nd_ns_target; /*target address */
252 /* could be followed by options */
255 #define nd_ns_type nd_ns_hdr.icmp6_type
256 #define nd_ns_code nd_ns_hdr.icmp6_code
257 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
258 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
260 struct nd_neighbor_advert { /* neighbor advertisement */
261 struct icmp6_hdr nd_na_hdr;
262 struct in6_addr nd_na_target; /* target address */
263 /* could be followed by options */
266 #define nd_na_type nd_na_hdr.icmp6_type
267 #define nd_na_code nd_na_hdr.icmp6_code
268 #define nd_na_cksum nd_na_hdr.icmp6_cksum
269 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
270 #if BYTE_ORDER == BIG_ENDIAN
271 #define ND_NA_FLAG_ROUTER 0x80000000
272 #define ND_NA_FLAG_SOLICITED 0x40000000
273 #define ND_NA_FLAG_OVERRIDE 0x20000000
275 #if BYTE_ORDER == LITTLE_ENDIAN
276 #define ND_NA_FLAG_ROUTER 0x80
277 #define ND_NA_FLAG_SOLICITED 0x40
278 #define ND_NA_FLAG_OVERRIDE 0x20
282 struct nd_redirect { /* redirect */
283 struct icmp6_hdr nd_rd_hdr;
284 struct in6_addr nd_rd_target; /* target address */
285 struct in6_addr nd_rd_dst; /* destination address */
286 /* could be followed by options */
289 #define nd_rd_type nd_rd_hdr.icmp6_type
290 #define nd_rd_code nd_rd_hdr.icmp6_code
291 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
292 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
294 struct nd_opt_hdr { /* Neighbor discovery option header */
295 u_int8_t nd_opt_type;
297 /* followed by option specific data*/
300 #define ND_OPT_SOURCE_LINKADDR 1
301 #define ND_OPT_TARGET_LINKADDR 2
302 #define ND_OPT_PREFIX_INFORMATION 3
303 #define ND_OPT_REDIRECTED_HEADER 4
305 #define ND_OPT_NONCE 14 /* RFC 3971 */
306 #define ND_OPT_ROUTE_INFO 24 /* RFC 4191 */
307 #define ND_OPT_RDNSS 25 /* RFC 6106 */
308 #define ND_OPT_DNSSL 31 /* RFC 6106 */
309 #define ND_OPT_MAX 31
311 struct nd_opt_prefix_info { /* prefix information */
312 u_int8_t nd_opt_pi_type;
313 u_int8_t nd_opt_pi_len;
314 u_int8_t nd_opt_pi_prefix_len;
315 u_int8_t nd_opt_pi_flags_reserved;
316 u_int32_t nd_opt_pi_valid_time;
317 u_int32_t nd_opt_pi_preferred_time;
318 u_int32_t nd_opt_pi_reserved2;
319 struct in6_addr nd_opt_pi_prefix;
322 #define ND_OPT_PI_FLAG_ONLINK 0x80
323 #define ND_OPT_PI_FLAG_AUTO 0x40
325 struct nd_opt_rd_hdr { /* redirected header */
326 u_int8_t nd_opt_rh_type;
327 u_int8_t nd_opt_rh_len;
328 u_int16_t nd_opt_rh_reserved1;
329 u_int32_t nd_opt_rh_reserved2;
330 /* followed by IP header and data */
333 struct nd_opt_mtu { /* MTU option */
334 u_int8_t nd_opt_mtu_type;
335 u_int8_t nd_opt_mtu_len;
336 u_int16_t nd_opt_mtu_reserved;
337 u_int32_t nd_opt_mtu_mtu;
340 #define ND_OPT_NONCE_LEN ((1 * 8) - 2)
341 #if ((ND_OPT_NONCE_LEN + 2) % 8) != 0
342 #error "(ND_OPT_NONCE_LEN + 2) must be a multiple of 8."
344 struct nd_opt_nonce { /* nonce option */
345 u_int8_t nd_opt_nonce_type;
346 u_int8_t nd_opt_nonce_len;
347 u_int8_t nd_opt_nonce[ND_OPT_NONCE_LEN];
350 struct nd_opt_route_info { /* route info */
351 u_int8_t nd_opt_rti_type;
352 u_int8_t nd_opt_rti_len;
353 u_int8_t nd_opt_rti_prefixlen;
354 u_int8_t nd_opt_rti_flags;
355 u_int32_t nd_opt_rti_lifetime;
359 struct nd_opt_rdnss { /* RDNSS option (RFC 6106) */
360 u_int8_t nd_opt_rdnss_type;
361 u_int8_t nd_opt_rdnss_len;
362 u_int16_t nd_opt_rdnss_reserved;
363 u_int32_t nd_opt_rdnss_lifetime;
364 /* followed by list of recursive DNS servers */
367 struct nd_opt_dnssl { /* DNSSL option (RFC 6106) */
368 u_int8_t nd_opt_dnssl_type;
369 u_int8_t nd_opt_dnssl_len;
370 u_int16_t nd_opt_dnssl_reserved;
371 u_int32_t nd_opt_dnssl_lifetime;
372 /* followed by list of DNS search domains */
379 struct icmp6_namelookup {
380 struct icmp6_hdr icmp6_nl_hdr;
381 u_int8_t icmp6_nl_nonce[8];
382 int32_t icmp6_nl_ttl;
384 u_int8_t icmp6_nl_len;
385 u_int8_t icmp6_nl_name[3];
387 /* could be followed by options */
391 * icmp6 node information
393 struct icmp6_nodeinfo {
394 struct icmp6_hdr icmp6_ni_hdr;
395 u_int8_t icmp6_ni_nonce[8];
396 /* could be followed by reply data */
399 #define ni_type icmp6_ni_hdr.icmp6_type
400 #define ni_code icmp6_ni_hdr.icmp6_code
401 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
402 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
403 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
405 #define NI_QTYPE_NOOP 0 /* NOOP */
406 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
407 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
408 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
409 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
410 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
412 #if BYTE_ORDER == BIG_ENDIAN
413 #define NI_SUPTYPE_FLAG_COMPRESS 0x1
414 #define NI_FQDN_FLAG_VALIDTTL 0x1
415 #elif BYTE_ORDER == LITTLE_ENDIAN
416 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100
417 #define NI_FQDN_FLAG_VALIDTTL 0x0100
420 #ifdef NAME_LOOKUPS_04
421 #if BYTE_ORDER == BIG_ENDIAN
422 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1
423 #define NI_NODEADDR_FLAG_SITELOCAL 0x2
424 #define NI_NODEADDR_FLAG_GLOBAL 0x4
425 #define NI_NODEADDR_FLAG_ALL 0x8
426 #define NI_NODEADDR_FLAG_TRUNCATE 0x10
427 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */
428 #elif BYTE_ORDER == LITTLE_ENDIAN
429 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100
430 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200
431 #define NI_NODEADDR_FLAG_GLOBAL 0x0400
432 #define NI_NODEADDR_FLAG_ALL 0x0800
433 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000
434 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */
436 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */
437 #if BYTE_ORDER == BIG_ENDIAN
438 #define NI_NODEADDR_FLAG_TRUNCATE 0x1
439 #define NI_NODEADDR_FLAG_ALL 0x2
440 #define NI_NODEADDR_FLAG_COMPAT 0x4
441 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8
442 #define NI_NODEADDR_FLAG_SITELOCAL 0x10
443 #define NI_NODEADDR_FLAG_GLOBAL 0x20
444 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */
445 #elif BYTE_ORDER == LITTLE_ENDIAN
446 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100
447 #define NI_NODEADDR_FLAG_ALL 0x0200
448 #define NI_NODEADDR_FLAG_COMPAT 0x0400
449 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800
450 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000
451 #define NI_NODEADDR_FLAG_GLOBAL 0x2000
452 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */
456 struct ni_reply_fqdn {
457 u_int32_t ni_fqdn_ttl; /* TTL */
458 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
459 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
463 * Router Renumbering. as router-renum-08.txt
465 struct icmp6_router_renum { /* router renumbering header */
466 struct icmp6_hdr rr_hdr;
469 u_int16_t rr_maxdelay;
470 u_int32_t rr_reserved;
473 #define ICMP6_RR_FLAGS_TEST 0x80
474 #define ICMP6_RR_FLAGS_REQRESULT 0x40
475 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
476 #define ICMP6_RR_FLAGS_SPECSITE 0x10
477 #define ICMP6_RR_FLAGS_PREVDONE 0x08
479 #define rr_type rr_hdr.icmp6_type
480 #define rr_code rr_hdr.icmp6_code
481 #define rr_cksum rr_hdr.icmp6_cksum
482 #define rr_seqnum rr_hdr.icmp6_data32[0]
484 struct rr_pco_match { /* match prefix part */
487 u_int8_t rpm_ordinal;
488 u_int8_t rpm_matchlen;
491 u_int16_t rpm_reserved;
492 struct in6_addr rpm_prefix;
495 #define RPM_PCO_ADD 1
496 #define RPM_PCO_CHANGE 2
497 #define RPM_PCO_SETGLOBAL 3
498 #define RPM_PCO_MAX 4
500 struct rr_pco_use { /* use prefix part */
502 u_int8_t rpu_keeplen;
504 u_int8_t rpu_raflags;
505 u_int32_t rpu_vltime;
506 u_int32_t rpu_pltime;
508 struct in6_addr rpu_prefix;
510 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
511 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
513 #if BYTE_ORDER == BIG_ENDIAN
514 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
515 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
516 #elif BYTE_ORDER == LITTLE_ENDIAN
517 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
518 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
521 struct rr_result { /* router renumbering result message */
523 u_int8_t rrr_ordinal;
524 u_int8_t rrr_matchedlen;
526 struct in6_addr rrr_prefix;
528 #if BYTE_ORDER == BIG_ENDIAN
529 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002
530 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
531 #elif BYTE_ORDER == LITTLE_ENDIAN
532 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200
533 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
537 * icmp6 filter structures.
540 struct icmp6_filter {
541 u_int32_t icmp6_filt[8];
545 #define ICMP6_FILTER_SETPASSALL(filterp) \
548 p = (u_char *)filterp; \
549 for (i = 0; i < sizeof(struct icmp6_filter); i++) \
551 } while (/*CONSTCOND*/ 0)
552 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
553 bzero(filterp, sizeof(struct icmp6_filter))
555 #define ICMP6_FILTER_SETPASSALL(filterp) \
556 memset(filterp, 0xff, sizeof(struct icmp6_filter))
557 #define ICMP6_FILTER_SETBLOCKALL(filterp) \
558 memset(filterp, 0x00, sizeof(struct icmp6_filter))
561 #define ICMP6_FILTER_SETPASS(type, filterp) \
562 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31)))
563 #define ICMP6_FILTER_SETBLOCK(type, filterp) \
564 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31)))
565 #define ICMP6_FILTER_WILLPASS(type, filterp) \
566 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
567 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \
568 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
571 * Variables related to this implementation
572 * of the internet control message protocol version 6.
574 struct icmp6errstat {
575 uint64_t icp6errs_dst_unreach_noroute;
576 uint64_t icp6errs_dst_unreach_admin;
577 uint64_t icp6errs_dst_unreach_beyondscope;
578 uint64_t icp6errs_dst_unreach_addr;
579 uint64_t icp6errs_dst_unreach_noport;
580 uint64_t icp6errs_packet_too_big;
581 uint64_t icp6errs_time_exceed_transit;
582 uint64_t icp6errs_time_exceed_reassembly;
583 uint64_t icp6errs_paramprob_header;
584 uint64_t icp6errs_paramprob_nextheader;
585 uint64_t icp6errs_paramprob_option;
586 uint64_t icp6errs_redirect; /* we regard redirect as an error here */
587 uint64_t icp6errs_unknown;
591 /* statistics related to icmp6 packets generated */
592 uint64_t icp6s_error; /* # of calls to icmp6_error */
593 uint64_t icp6s_canterror; /* no error 'cuz old was icmp */
594 uint64_t icp6s_toofreq; /* no error 'cuz rate limitation */
595 uint64_t icp6s_outhist[256];
596 /* statistics related to input message processed */
597 uint64_t icp6s_badcode; /* icmp6_code out of range */
598 uint64_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */
599 uint64_t icp6s_checksum; /* bad checksum */
600 uint64_t icp6s_badlen; /* calculated bound mismatch */
602 * number of responses: this member is inherited from netinet code, but
603 * for netinet6 code, it is already available in icp6s_outhist[].
605 uint64_t icp6s_reflect;
606 uint64_t icp6s_inhist[256];
607 uint64_t icp6s_nd_toomanyopt; /* too many ND options */
608 struct icmp6errstat icp6s_outerrhist;
609 #define icp6s_odst_unreach_noroute \
610 icp6s_outerrhist.icp6errs_dst_unreach_noroute
611 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin
612 #define icp6s_odst_unreach_beyondscope \
613 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope
614 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr
615 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport
616 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big
617 #define icp6s_otime_exceed_transit \
618 icp6s_outerrhist.icp6errs_time_exceed_transit
619 #define icp6s_otime_exceed_reassembly \
620 icp6s_outerrhist.icp6errs_time_exceed_reassembly
621 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header
622 #define icp6s_oparamprob_nextheader \
623 icp6s_outerrhist.icp6errs_paramprob_nextheader
624 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option
625 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect
626 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown
627 uint64_t icp6s_pmtuchg; /* path MTU changes */
628 uint64_t icp6s_nd_badopt; /* bad ND options */
629 uint64_t icp6s_badns; /* bad neighbor solicitation */
630 uint64_t icp6s_badna; /* bad neighbor advertisement */
631 uint64_t icp6s_badrs; /* bad router solicitation */
632 uint64_t icp6s_badra; /* bad router advertisement */
633 uint64_t icp6s_badredirect; /* bad redirect message */
637 #include <sys/counter.h>
639 VNET_PCPUSTAT_DECLARE(struct icmp6stat, icmp6stat);
641 * In-kernel consumers can use these accessor macros directly to update
644 #define ICMP6STAT_ADD(name, val) \
645 VNET_PCPUSTAT_ADD(struct icmp6stat, icmp6stat, name, (val))
646 #define ICMP6STAT_INC(name) ICMP6STAT_ADD(name, 1)
649 * Kernel module consumers must use this accessor macro.
651 void kmod_icmp6stat_inc(int statnum);
652 #define KMOD_ICMP6STAT_INC(name) \
653 kmod_icmp6stat_inc(offsetof(struct icmp6stat, name) / sizeof(uint64_t))
657 * Names for ICMP sysctl objects
659 #define ICMPV6CTL_STATS 1
660 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */
661 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */
663 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */
665 #define ICMPV6CTL_ND6_PRUNE 6
666 #define ICMPV6CTL_ND6_DELAY 8
667 #define ICMPV6CTL_ND6_UMAXTRIES 9
668 #define ICMPV6CTL_ND6_MMAXTRIES 10
669 #define ICMPV6CTL_ND6_USELOOPBACK 11
670 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */
671 #define ICMPV6CTL_NODEINFO 13
672 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */
673 #define ICMPV6CTL_ND6_MAXNUDHINT 15
674 #define ICMPV6CTL_MTUDISC_HIWAT 16
675 #define ICMPV6CTL_MTUDISC_LOWAT 17
676 #define ICMPV6CTL_ND6_DEBUG 18
677 #define ICMPV6CTL_ND6_DRLIST 19
678 #define ICMPV6CTL_ND6_PRLIST 20
679 #define ICMPV6CTL_MLD_MAXSRCFILTER 21
680 #define ICMPV6CTL_MLD_SOMAXSRC 22
681 #define ICMPV6CTL_MLD_VERSION 23
682 #define ICMPV6CTL_ND6_MAXQLEN 24
683 #define ICMPV6CTL_NODEINFO_OLDMCPREFIX 25
684 #define ICMPV6CTL_MAXID 26
686 #define RTF_PROBEMTU RTF_PROTO1
694 void icmp6_paramerror(struct mbuf *, int);
695 void icmp6_error(struct mbuf *, int, int, int);
696 void icmp6_error2(struct mbuf *, int, int, int, struct ifnet *);
697 int icmp6_input(struct mbuf **, int *, int);
698 void icmp6_fasttimo(void);
699 void icmp6_slowtimo(void);
700 void icmp6_reflect(struct mbuf *, size_t);
701 void icmp6_prepare(struct mbuf *);
702 void icmp6_redirect_input(struct mbuf *, int);
703 void icmp6_redirect_output(struct mbuf *, struct rtentry *);
706 void icmp6_mtudisc_update(struct ip6ctlparam *, int);
708 /* XXX: is this the right place for these macros? */
709 #define icmp6_ifstat_inc(ifp, tag) \
712 counter_u64_add(((struct in6_ifextra *) \
713 ((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat[\
714 offsetof(struct icmp6_ifstat, tag) / sizeof(uint64_t)], 1);\
715 } while (/*CONSTCOND*/ 0)
717 #define icmp6_ifoutstat_inc(ifp, type, code) \
719 icmp6_ifstat_inc(ifp, ifs6_out_msg); \
720 if (type < ICMP6_INFOMSG_MASK) \
721 icmp6_ifstat_inc(ifp, ifs6_out_error); \
723 case ICMP6_DST_UNREACH: \
724 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \
725 if (code == ICMP6_DST_UNREACH_ADMIN) \
726 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \
728 case ICMP6_PACKET_TOO_BIG: \
729 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \
731 case ICMP6_TIME_EXCEEDED: \
732 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \
734 case ICMP6_PARAM_PROB: \
735 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \
737 case ICMP6_ECHO_REQUEST: \
738 icmp6_ifstat_inc(ifp, ifs6_out_echo); \
740 case ICMP6_ECHO_REPLY: \
741 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \
743 case MLD_LISTENER_QUERY: \
744 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \
746 case MLD_LISTENER_REPORT: \
747 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \
749 case MLD_LISTENER_DONE: \
750 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \
752 case ND_ROUTER_SOLICIT: \
753 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \
755 case ND_ROUTER_ADVERT: \
756 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \
758 case ND_NEIGHBOR_SOLICIT: \
759 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \
761 case ND_NEIGHBOR_ADVERT: \
762 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \
765 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \
768 } while (/*CONSTCOND*/ 0)
770 VNET_DECLARE(int, icmp6_rediraccept); /* accept/process redirects */
771 VNET_DECLARE(int, icmp6_redirtimeout); /* cache time for redirect routes */
773 #define V_icmp6_rediraccept VNET(icmp6_rediraccept)
774 #define V_icmp6_redirtimeout VNET(icmp6_redirtimeout)
776 #define ICMP6_NODEINFO_FQDNOK 0x1
777 #define ICMP6_NODEINFO_NODEADDROK 0x2
778 #define ICMP6_NODEINFO_TMPADDROK 0x4
779 #define ICMP6_NODEINFO_GLOBALOK 0x8
782 #endif /* not _NETINET_ICMP6_H_ */