2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 /* \summary: IPv6 Internet Control Message Protocol (ICMPv6) printer */
28 #include <netdissect-stdinc.h>
33 #include "netdissect.h"
34 #include "addrtoname.h"
35 #include "addrtostr.h"
44 /* NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp */
45 /* $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $ */
48 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
49 * All rights reserved.
51 * Redistribution and use in source and binary forms, with or without
52 * modification, are permitted provided that the following conditions
54 * 1. Redistributions of source code must retain the above copyright
55 * notice, this list of conditions and the following disclaimer.
56 * 2. Redistributions in binary form must reproduce the above copyright
57 * notice, this list of conditions and the following disclaimer in the
58 * documentation and/or other materials provided with the distribution.
59 * 3. Neither the name of the project nor the names of its contributors
60 * may be used to endorse or promote products derived from this software
61 * without specific prior written permission.
63 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
66 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
77 uint8_t icmp6_type
; /* type field */
78 uint8_t icmp6_code
; /* code field */
79 uint16_t icmp6_cksum
; /* checksum field */
81 uint32_t icmp6_un_data32
[1]; /* type-specific field */
82 uint16_t icmp6_un_data16
[2]; /* type-specific field */
83 uint8_t icmp6_un_data8
[4]; /* type-specific field */
87 #define icmp6_data32 icmp6_dataun.icmp6_un_data32
88 #define icmp6_data16 icmp6_dataun.icmp6_un_data16
89 #define icmp6_data8 icmp6_dataun.icmp6_un_data8
90 #define icmp6_pptr icmp6_data32[0] /* parameter prob */
91 #define icmp6_mtu icmp6_data32[0] /* packet too big */
92 #define icmp6_id icmp6_data16[0] /* echo request/reply */
93 #define icmp6_seq icmp6_data16[1] /* echo request/reply */
94 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
96 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
97 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
98 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
99 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
101 #define ICMP6_ECHO_REQUEST 128 /* echo service */
102 #define ICMP6_ECHO_REPLY 129 /* echo reply */
103 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
104 #define MLD6_LISTENER_QUERY 130 /* multicast listener query */
105 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
106 #define MLD6_LISTENER_REPORT 131 /* multicast listener report */
107 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
108 #define MLD6_LISTENER_DONE 132 /* multicast listener done */
110 #define ND_ROUTER_SOLICIT 133 /* router solicitation */
111 #define ND_ROUTER_ADVERT 134 /* router advertisement */
112 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
113 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
114 #define ND_REDIRECT 137 /* redirect */
116 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
118 #define ICMP6_WRUREQUEST 139 /* who are you request */
119 #define ICMP6_WRUREPLY 140 /* who are you reply */
120 #define ICMP6_FQDN_QUERY 139 /* FQDN query */
121 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
122 #define ICMP6_NI_QUERY 139 /* node information request */
123 #define ICMP6_NI_REPLY 140 /* node information reply */
124 #define IND_SOLICIT 141 /* inverse neighbor solicitation */
125 #define IND_ADVERT 142 /* inverse neighbor advertisement */
127 #define ICMP6_V2_MEMBERSHIP_REPORT 143 /* v2 membership report */
128 #define MLDV2_LISTENER_REPORT 143 /* v2 multicast listener report */
129 #define ICMP6_HADISCOV_REQUEST 144
130 #define ICMP6_HADISCOV_REPLY 145
131 #define ICMP6_MOBILEPREFIX_SOLICIT 146
132 #define ICMP6_MOBILEPREFIX_ADVERT 147
134 #define MLD6_MTRACE_RESP 200 /* mtrace response(to sender) */
135 #define MLD6_MTRACE 201 /* mtrace messages */
137 #define ICMP6_MAXTYPE 201
139 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
140 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
141 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
142 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
143 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
144 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
146 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
147 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
149 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
150 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
151 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
153 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
155 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
156 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
157 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
159 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
160 #define ICMP6_NI_REFUSED 1 /* node information request is refused */
161 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
163 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
164 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
165 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
167 /* Used in kernel only */
168 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
169 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
172 * Multicast Listener Discovery
175 struct icmp6_hdr mld6_hdr
;
176 struct in6_addr mld6_addr
; /* multicast address */
179 #define mld6_type mld6_hdr.icmp6_type
180 #define mld6_code mld6_hdr.icmp6_code
181 #define mld6_cksum mld6_hdr.icmp6_cksum
182 #define mld6_maxdelay mld6_hdr.icmp6_data16[0]
183 #define mld6_reserved mld6_hdr.icmp6_data16[1]
185 #define MLD_MINLEN 24
186 #define MLDV2_MINLEN 28
192 struct nd_router_solicit
{ /* router solicitation */
193 struct icmp6_hdr nd_rs_hdr
;
194 /* could be followed by options */
197 #define nd_rs_type nd_rs_hdr.icmp6_type
198 #define nd_rs_code nd_rs_hdr.icmp6_code
199 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
200 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
202 struct nd_router_advert
{ /* router advertisement */
203 struct icmp6_hdr nd_ra_hdr
;
204 uint32_t nd_ra_reachable
; /* reachable time */
205 uint32_t nd_ra_retransmit
; /* retransmit timer */
206 /* could be followed by options */
209 #define nd_ra_type nd_ra_hdr.icmp6_type
210 #define nd_ra_code nd_ra_hdr.icmp6_code
211 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
212 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
213 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
214 #define ND_RA_FLAG_MANAGED 0x80
215 #define ND_RA_FLAG_OTHER 0x40
216 #define ND_RA_FLAG_HOME_AGENT 0x20
219 * Router preference values based on draft-draves-ipngwg-router-selection-01.
220 * These are non-standard definitions.
222 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
224 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
225 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
226 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
227 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
229 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
231 struct nd_neighbor_solicit
{ /* neighbor solicitation */
232 struct icmp6_hdr nd_ns_hdr
;
233 struct in6_addr nd_ns_target
; /*target address */
234 /* could be followed by options */
237 #define nd_ns_type nd_ns_hdr.icmp6_type
238 #define nd_ns_code nd_ns_hdr.icmp6_code
239 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
240 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
242 struct nd_neighbor_advert
{ /* neighbor advertisement */
243 struct icmp6_hdr nd_na_hdr
;
244 struct in6_addr nd_na_target
; /* target address */
245 /* could be followed by options */
248 #define nd_na_type nd_na_hdr.icmp6_type
249 #define nd_na_code nd_na_hdr.icmp6_code
250 #define nd_na_cksum nd_na_hdr.icmp6_cksum
251 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
253 #define ND_NA_FLAG_ROUTER 0x80000000
254 #define ND_NA_FLAG_SOLICITED 0x40000000
255 #define ND_NA_FLAG_OVERRIDE 0x20000000
257 struct nd_redirect
{ /* redirect */
258 struct icmp6_hdr nd_rd_hdr
;
259 struct in6_addr nd_rd_target
; /* target address */
260 struct in6_addr nd_rd_dst
; /* destination address */
261 /* could be followed by options */
264 #define nd_rd_type nd_rd_hdr.icmp6_type
265 #define nd_rd_code nd_rd_hdr.icmp6_code
266 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
267 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
269 struct nd_opt_hdr
{ /* Neighbor discovery option header */
272 /* followed by option specific data*/
275 #define ND_OPT_SOURCE_LINKADDR 1
276 #define ND_OPT_TARGET_LINKADDR 2
277 #define ND_OPT_PREFIX_INFORMATION 3
278 #define ND_OPT_REDIRECTED_HEADER 4
280 #define ND_OPT_ADVINTERVAL 7
281 #define ND_OPT_HOMEAGENT_INFO 8
282 #define ND_OPT_ROUTE_INFO 24 /* RFC4191 */
283 #define ND_OPT_RDNSS 25
284 #define ND_OPT_DNSSL 31
286 struct nd_opt_prefix_info
{ /* prefix information */
287 nd_uint8_t nd_opt_pi_type
;
288 nd_uint8_t nd_opt_pi_len
;
289 nd_uint8_t nd_opt_pi_prefix_len
;
290 nd_uint8_t nd_opt_pi_flags_reserved
;
291 nd_uint32_t nd_opt_pi_valid_time
;
292 nd_uint32_t nd_opt_pi_preferred_time
;
293 nd_uint32_t nd_opt_pi_reserved2
;
294 struct in6_addr nd_opt_pi_prefix
;
297 #define ND_OPT_PI_FLAG_ONLINK 0x80
298 #define ND_OPT_PI_FLAG_AUTO 0x40
299 #define ND_OPT_PI_FLAG_ROUTER 0x20 /*2292bis*/
301 struct nd_opt_rd_hdr
{ /* redirected header */
302 uint8_t nd_opt_rh_type
;
303 uint8_t nd_opt_rh_len
;
304 uint16_t nd_opt_rh_reserved1
;
305 uint32_t nd_opt_rh_reserved2
;
306 /* followed by IP header and data */
309 struct nd_opt_mtu
{ /* MTU option */
310 uint8_t nd_opt_mtu_type
;
311 uint8_t nd_opt_mtu_len
;
312 uint16_t nd_opt_mtu_reserved
;
313 uint32_t nd_opt_mtu_mtu
;
316 struct nd_opt_rdnss
{ /* RDNSS RFC 6106 5.1 */
317 uint8_t nd_opt_rdnss_type
;
318 uint8_t nd_opt_rdnss_len
;
319 uint16_t nd_opt_rdnss_reserved
;
320 uint32_t nd_opt_rdnss_lifetime
;
321 struct in6_addr nd_opt_rdnss_addr
[1]; /* variable-length */
324 struct nd_opt_dnssl
{ /* DNSSL RFC 6106 5.2 */
325 uint8_t nd_opt_dnssl_type
;
326 uint8_t nd_opt_dnssl_len
;
327 uint16_t nd_opt_dnssl_reserved
;
328 uint32_t nd_opt_dnssl_lifetime
;
329 /* followed by list of DNS search domains, variable-length */
332 struct nd_opt_advinterval
{ /* Advertisement interval option */
333 uint8_t nd_opt_adv_type
;
334 uint8_t nd_opt_adv_len
;
335 uint16_t nd_opt_adv_reserved
;
336 uint32_t nd_opt_adv_interval
;
339 struct nd_opt_homeagent_info
{ /* Home Agent info */
340 uint8_t nd_opt_hai_type
;
341 uint8_t nd_opt_hai_len
;
342 uint16_t nd_opt_hai_reserved
;
343 int16_t nd_opt_hai_preference
;
344 uint16_t nd_opt_hai_lifetime
;
347 struct nd_opt_route_info
{ /* route info */
348 uint8_t nd_opt_rti_type
;
349 uint8_t nd_opt_rti_len
;
350 uint8_t nd_opt_rti_prefixlen
;
351 uint8_t nd_opt_rti_flags
;
352 uint32_t nd_opt_rti_lifetime
;
360 struct icmp6_namelookup
{
361 struct icmp6_hdr icmp6_nl_hdr
;
362 uint8_t icmp6_nl_nonce
[8];
363 int32_t icmp6_nl_ttl
;
365 uint8_t icmp6_nl_len
;
366 uint8_t icmp6_nl_name
[3];
368 /* could be followed by options */
372 * icmp6 node information
374 struct icmp6_nodeinfo
{
375 struct icmp6_hdr icmp6_ni_hdr
;
376 uint8_t icmp6_ni_nonce
[8];
377 /* could be followed by reply data */
380 #define ni_type icmp6_ni_hdr.icmp6_type
381 #define ni_code icmp6_ni_hdr.icmp6_code
382 #define ni_cksum icmp6_ni_hdr.icmp6_cksum
383 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
384 #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
386 #define NI_QTYPE_NOOP 0 /* NOOP */
387 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
388 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
389 #define NI_QTYPE_DNSNAME 2 /* DNS Name */
390 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
391 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
394 #define NI_SUPTYPE_FLAG_COMPRESS ((uint16_t)htons(0x1))
395 #define NI_FQDN_FLAG_VALIDTTL ((uint16_t)htons(0x1))
398 #define NI_NODEADDR_FLAG_TRUNCATE ((uint16_t)htons(0x1))
399 #define NI_NODEADDR_FLAG_ALL ((uint16_t)htons(0x2))
400 #define NI_NODEADDR_FLAG_COMPAT ((uint16_t)htons(0x4))
401 #define NI_NODEADDR_FLAG_LINKLOCAL ((uint16_t)htons(0x8))
402 #define NI_NODEADDR_FLAG_SITELOCAL ((uint16_t)htons(0x10))
403 #define NI_NODEADDR_FLAG_GLOBAL ((uint16_t)htons(0x20))
404 #define NI_NODEADDR_FLAG_ANYCAST ((uint16_t)htons(0x40)) /* just experimental. not in spec */
406 struct ni_reply_fqdn
{
407 uint32_t ni_fqdn_ttl
; /* TTL */
408 uint8_t ni_fqdn_namelen
; /* length in octets of the FQDN */
409 uint8_t ni_fqdn_name
[3]; /* XXX: alignment */
413 * Router Renumbering. as router-renum-08.txt
415 struct icmp6_router_renum
{ /* router renumbering header */
416 struct icmp6_hdr rr_hdr
;
419 uint16_t rr_maxdelay
;
420 uint32_t rr_reserved
;
422 #define ICMP6_RR_FLAGS_TEST 0x80
423 #define ICMP6_RR_FLAGS_REQRESULT 0x40
424 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
425 #define ICMP6_RR_FLAGS_SPECSITE 0x10
426 #define ICMP6_RR_FLAGS_PREVDONE 0x08
428 #define rr_type rr_hdr.icmp6_type
429 #define rr_code rr_hdr.icmp6_code
430 #define rr_cksum rr_hdr.icmp6_cksum
431 #define rr_seqnum rr_hdr.icmp6_data32[0]
433 struct rr_pco_match
{ /* match prefix part */
437 uint8_t rpm_matchlen
;
440 uint16_t rpm_reserved
;
441 struct in6_addr rpm_prefix
;
444 #define RPM_PCO_ADD 1
445 #define RPM_PCO_CHANGE 2
446 #define RPM_PCO_SETGLOBAL 3
447 #define RPM_PCO_MAX 4
449 struct rr_pco_use
{ /* use prefix part */
457 struct in6_addr rpu_prefix
;
459 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
460 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
463 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME ((uint32_t)htonl(0x80000000))
464 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME ((uint32_t)htonl(0x40000000))
466 struct rr_result
{ /* router renumbering result message */
469 uint8_t rrr_matchedlen
;
471 struct in6_addr rrr_prefix
;
474 #define ICMP6_RR_RESULT_FLAGS_OOB ((uint16_t)htons(0x0002))
475 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN ((uint16_t)htons(0x0001))
477 static const char *get_rtpref(u_int
);
478 static const char *get_lifetime(uint32_t);
479 static void print_lladdr(netdissect_options
*ndo
, const u_char
*, size_t);
480 static void icmp6_opt_print(netdissect_options
*ndo
, const u_char
*, int);
481 static void mld6_print(netdissect_options
*ndo
, const u_char
*);
482 static void mldv2_report_print(netdissect_options
*ndo
, const u_char
*, u_int
);
483 static void mldv2_query_print(netdissect_options
*ndo
, const u_char
*, u_int
);
484 static const struct udphdr
*get_upperlayer(netdissect_options
*ndo
, const u_char
*, u_int
*);
485 static void dnsname_print(netdissect_options
*ndo
, const u_char
*, const u_char
*);
486 static void icmp6_nodeinfo_print(netdissect_options
*ndo
, u_int
, const u_char
*, const u_char
*);
487 static void icmp6_rrenum_print(netdissect_options
*ndo
, const u_char
*, const u_char
*);
490 #define abs(a) ((0 < (a)) ? (a) : -(a))
495 static const struct tok icmp6_type_values
[] = {
496 { ICMP6_DST_UNREACH
, "destination unreachable"},
497 { ICMP6_PACKET_TOO_BIG
, "packet too big"},
498 { ICMP6_TIME_EXCEEDED
, "time exceeded in-transit"},
499 { ICMP6_PARAM_PROB
, "parameter problem"},
500 { ICMP6_ECHO_REQUEST
, "echo request"},
501 { ICMP6_ECHO_REPLY
, "echo reply"},
502 { MLD6_LISTENER_QUERY
, "multicast listener query"},
503 { MLD6_LISTENER_REPORT
, "multicast listener report"},
504 { MLD6_LISTENER_DONE
, "multicast listener done"},
505 { ND_ROUTER_SOLICIT
, "router solicitation"},
506 { ND_ROUTER_ADVERT
, "router advertisement"},
507 { ND_NEIGHBOR_SOLICIT
, "neighbor solicitation"},
508 { ND_NEIGHBOR_ADVERT
, "neighbor advertisement"},
509 { ND_REDIRECT
, "redirect"},
510 { ICMP6_ROUTER_RENUMBERING
, "router renumbering"},
511 { IND_SOLICIT
, "inverse neighbor solicitation"},
512 { IND_ADVERT
, "inverse neighbor advertisement"},
513 { MLDV2_LISTENER_REPORT
, "multicast listener report v2"},
514 { ICMP6_HADISCOV_REQUEST
, "ha discovery request"},
515 { ICMP6_HADISCOV_REPLY
, "ha discovery reply"},
516 { ICMP6_MOBILEPREFIX_SOLICIT
, "mobile router solicitation"},
517 { ICMP6_MOBILEPREFIX_ADVERT
, "mobile router advertisement"},
518 { ICMP6_WRUREQUEST
, "who-are-you request"},
519 { ICMP6_WRUREPLY
, "who-are-you reply"},
520 { ICMP6_NI_QUERY
, "node information query"},
521 { ICMP6_NI_REPLY
, "node information reply"},
522 { MLD6_MTRACE
, "mtrace message"},
523 { MLD6_MTRACE_RESP
, "mtrace response"},
524 { ND_RPL_MESSAGE
, "RPL"},
528 static const struct tok icmp6_dst_unreach_code_values
[] = {
529 { ICMP6_DST_UNREACH_NOROUTE
, "unreachable route" },
530 { ICMP6_DST_UNREACH_ADMIN
, " unreachable prohibited"},
531 { ICMP6_DST_UNREACH_BEYONDSCOPE
, "beyond scope"},
532 { ICMP6_DST_UNREACH_ADDR
, "unreachable address"},
533 { ICMP6_DST_UNREACH_NOPORT
, "unreachable port"},
537 static const struct tok icmp6_opt_pi_flag_values
[] = {
538 { ND_OPT_PI_FLAG_ONLINK
, "onlink" },
539 { ND_OPT_PI_FLAG_AUTO
, "auto" },
540 { ND_OPT_PI_FLAG_ROUTER
, "router" },
544 static const struct tok icmp6_opt_ra_flag_values
[] = {
545 { ND_RA_FLAG_MANAGED
, "managed" },
546 { ND_RA_FLAG_OTHER
, "other stateful"},
547 { ND_RA_FLAG_HOME_AGENT
, "home agent"},
551 static const struct tok icmp6_nd_na_flag_values
[] = {
552 { ND_NA_FLAG_ROUTER
, "router" },
553 { ND_NA_FLAG_SOLICITED
, "solicited" },
554 { ND_NA_FLAG_OVERRIDE
, "override" },
559 static const struct tok icmp6_opt_values
[] = {
560 { ND_OPT_SOURCE_LINKADDR
, "source link-address"},
561 { ND_OPT_TARGET_LINKADDR
, "destination link-address"},
562 { ND_OPT_PREFIX_INFORMATION
, "prefix info"},
563 { ND_OPT_REDIRECTED_HEADER
, "redirected header"},
564 { ND_OPT_MTU
, "mtu"},
565 { ND_OPT_RDNSS
, "rdnss"},
566 { ND_OPT_DNSSL
, "dnssl"},
567 { ND_OPT_ADVINTERVAL
, "advertisement interval"},
568 { ND_OPT_HOMEAGENT_INFO
, "homeagent information"},
569 { ND_OPT_ROUTE_INFO
, "route info"},
573 /* mldv2 report types */
574 static const struct tok mldv2report2str
[] = {
587 static const char *rtpref_str
[] = {
594 return rtpref_str
[((v
& ND_RA_FLAG_RTPREF_MASK
) >> 3) & 0xff];
598 get_lifetime(uint32_t v
)
602 if (v
== (uint32_t)~0UL)
605 snprintf(buf
, sizeof(buf
), "%us", v
);
611 print_lladdr(netdissect_options
*ndo
, const uint8_t *p
, size_t l
)
613 const uint8_t *ep
, *q
;
617 while (l
> 0 && q
< ep
) {
620 ND_PRINT((ndo
,"%02x", *q
++));
625 static int icmp6_cksum(netdissect_options
*ndo
, const struct ip6_hdr
*ip6
,
626 const struct icmp6_hdr
*icp
, u_int len
)
628 return nextproto6_cksum(ndo
, ip6
, (const uint8_t *)(const void *)icp
, len
, len
,
632 static const struct tok rpl_mop_values
[] = {
633 { RPL_DIO_NONSTORING
, "nonstoring"},
634 { RPL_DIO_STORING
, "storing"},
635 { RPL_DIO_NONSTORING_MULTICAST
, "nonstoring-multicast"},
636 { RPL_DIO_STORING_MULTICAST
, "storing-multicast"},
640 static const struct tok rpl_subopt_values
[] = {
641 { RPL_OPT_PAD0
, "pad0"},
642 { RPL_OPT_PADN
, "padN"},
643 { RPL_DIO_METRICS
, "metrics"},
644 { RPL_DIO_ROUTINGINFO
, "routinginfo"},
645 { RPL_DIO_CONFIG
, "config"},
646 { RPL_DAO_RPLTARGET
, "rpltarget"},
647 { RPL_DAO_TRANSITINFO
, "transitinfo"},
648 { RPL_DIO_DESTPREFIX
, "destprefix"},
649 { RPL_DAO_RPLTARGET_DESC
, "rpltargetdesc"},
654 rpl_dio_printopt(netdissect_options
*ndo
,
655 const struct rpl_dio_genoption
*opt
,
658 if(length
< RPL_DIO_GENOPTION_LEN
) return;
659 length
-= RPL_DIO_GENOPTION_LEN
;
661 ND_TCHECK(opt
->rpl_dio_len
);
663 while((opt
->rpl_dio_type
== RPL_OPT_PAD0
&&
664 (const u_char
*)opt
< ndo
->ndo_snapend
) ||
665 ND_TTEST2(*opt
,(opt
->rpl_dio_len
+2))) {
667 unsigned int optlen
= opt
->rpl_dio_len
+2;
668 if(opt
->rpl_dio_type
== RPL_OPT_PAD0
) {
670 ND_PRINT((ndo
, " opt:pad0"));
672 ND_PRINT((ndo
, " opt:%s len:%u ",
673 tok2str(rpl_subopt_values
, "subopt:%u", opt
->rpl_dio_type
),
675 if(ndo
->ndo_vflag
> 2) {
676 unsigned int paylen
= opt
->rpl_dio_len
;
677 if(paylen
> length
) paylen
= length
;
680 ((const uint8_t *)opt
) + RPL_DIO_GENOPTION_LEN
, /* content of DIO option */
684 opt
= (const struct rpl_dio_genoption
*)(((const char *)opt
) + optlen
);
689 ND_PRINT((ndo
," [|truncated]"));
694 rpl_dio_print(netdissect_options
*ndo
,
695 const u_char
*bp
, u_int length
)
697 const struct nd_rpl_dio
*dio
= (const struct nd_rpl_dio
*)bp
;
698 const char *dagid_str
;
701 dagid_str
= ip6addr_string (ndo
, dio
->rpl_dagid
);
703 ND_PRINT((ndo
, " [dagid:%s,seq:%u,instance:%u,rank:%u,%smop:%s,prf:%u]",
707 EXTRACT_BE_16BITS(&dio
->rpl_dagrank
),
708 RPL_DIO_GROUNDED(dio
->rpl_mopprf
) ? "grounded,":"",
709 tok2str(rpl_mop_values
, "mop%u", RPL_DIO_MOP(dio
->rpl_mopprf
)),
710 RPL_DIO_PRF(dio
->rpl_mopprf
)));
712 if(ndo
->ndo_vflag
> 1) {
713 const struct rpl_dio_genoption
*opt
= (const struct rpl_dio_genoption
*)&dio
[1];
714 rpl_dio_printopt(ndo
, opt
, length
);
718 ND_PRINT((ndo
," [|truncated]"));
723 rpl_dao_print(netdissect_options
*ndo
,
724 const u_char
*bp
, u_int length
)
726 const struct nd_rpl_dao
*dao
= (const struct nd_rpl_dao
*)bp
;
727 const char *dagid_str
= "<elided>";
730 if (length
< ND_RPL_DAO_MIN_LEN
)
733 bp
+= ND_RPL_DAO_MIN_LEN
;
734 length
-= ND_RPL_DAO_MIN_LEN
;
735 if(RPL_DAO_D(dao
->rpl_flags
)) {
736 ND_TCHECK2(dao
->rpl_dagid
, DAGID_LEN
);
737 if (length
< DAGID_LEN
)
739 dagid_str
= ip6addr_string (ndo
, dao
->rpl_dagid
);
744 ND_PRINT((ndo
, " [dagid:%s,seq:%u,instance:%u%s%s,%02x]",
748 RPL_DAO_K(dao
->rpl_flags
) ? ",acK":"",
749 RPL_DAO_D(dao
->rpl_flags
) ? ",Dagid":"",
752 if(ndo
->ndo_vflag
> 1) {
753 const struct rpl_dio_genoption
*opt
= (const struct rpl_dio_genoption
*)bp
;
754 rpl_dio_printopt(ndo
, opt
, length
);
759 ND_PRINT((ndo
," [|truncated]"));
763 ND_PRINT((ndo
," [|length too short]"));
768 rpl_daoack_print(netdissect_options
*ndo
,
769 const u_char
*bp
, u_int length
)
771 const struct nd_rpl_daoack
*daoack
= (const struct nd_rpl_daoack
*)bp
;
772 const char *dagid_str
= "<elided>";
774 ND_TCHECK2(*daoack
, ND_RPL_DAOACK_MIN_LEN
);
775 if (length
< ND_RPL_DAOACK_MIN_LEN
)
778 bp
+= ND_RPL_DAOACK_MIN_LEN
;
779 length
-= ND_RPL_DAOACK_MIN_LEN
;
780 if(RPL_DAOACK_D(daoack
->rpl_flags
)) {
781 ND_TCHECK2(daoack
->rpl_dagid
, DAGID_LEN
);
782 if (length
< DAGID_LEN
)
784 dagid_str
= ip6addr_string (ndo
, daoack
->rpl_dagid
);
789 ND_PRINT((ndo
, " [dagid:%s,seq:%u,instance:%u,status:%u]",
792 daoack
->rpl_instanceid
,
793 daoack
->rpl_status
));
795 /* no officially defined options for DAOACK, but print any we find */
796 if(ndo
->ndo_vflag
> 1) {
797 const struct rpl_dio_genoption
*opt
= (const struct rpl_dio_genoption
*)bp
;
798 rpl_dio_printopt(ndo
, opt
, length
);
803 ND_PRINT((ndo
," [|dao-truncated]"));
807 ND_PRINT((ndo
," [|dao-length too short]"));
812 rpl_print(netdissect_options
*ndo
,
813 const struct icmp6_hdr
*hdr
,
814 const u_char
*bp
, u_int length
)
816 int secured
= hdr
->icmp6_code
& 0x80;
817 int basecode
= hdr
->icmp6_code
& 0x7f;
820 ND_PRINT((ndo
, ", (SEC) [worktodo]"));
822 * the next header pointer needs to move forward to
823 * skip the secure part.
827 ND_PRINT((ndo
, ", (CLR)"));
832 ND_PRINT((ndo
, "DODAG Information Solicitation"));
837 ND_PRINT((ndo
, "DODAG Information Object"));
839 rpl_dio_print(ndo
, bp
, length
);
843 ND_PRINT((ndo
, "Destination Advertisement Object"));
845 rpl_dao_print(ndo
, bp
, length
);
849 ND_PRINT((ndo
, "Destination Advertisement Object Ack"));
851 rpl_daoack_print(ndo
, bp
, length
);
855 ND_PRINT((ndo
, "RPL message, unknown code %u",hdr
->icmp6_code
));
862 ND_PRINT((ndo
," [|truncated]"));
870 icmp6_print(netdissect_options
*ndo
,
871 const u_char
*bp
, u_int length
, const u_char
*bp2
, int fragmented
)
873 const struct icmp6_hdr
*dp
;
874 const struct ip6_hdr
*ip
;
875 const struct ip6_hdr
*oip
;
876 const struct udphdr
*ouh
;
881 dp
= (const struct icmp6_hdr
*)bp
;
882 ip
= (const struct ip6_hdr
*)bp2
;
883 oip
= (const struct ip6_hdr
*)(dp
+ 1);
884 /* 'ep' points to the end of available data. */
885 ep
= ndo
->ndo_snapend
;
887 ND_TCHECK(dp
->icmp6_cksum
);
889 if (ndo
->ndo_vflag
&& !fragmented
) {
890 uint16_t sum
, udp_sum
;
892 if (ND_TTEST2(bp
[0], length
)) {
893 udp_sum
= EXTRACT_BE_16BITS(&dp
->icmp6_cksum
);
894 sum
= icmp6_cksum(ndo
, ip
, dp
, length
);
896 ND_PRINT((ndo
,"[bad icmp6 cksum 0x%04x -> 0x%04x!] ",
898 in_cksum_shouldbe(udp_sum
, sum
)));
900 ND_PRINT((ndo
,"[icmp6 sum ok] "));
904 ND_PRINT((ndo
,"ICMP6, %s", tok2str(icmp6_type_values
,"unknown icmp6 type (%u)",dp
->icmp6_type
)));
906 /* display cosmetics: print the packet length for printer that use the vflag now */
907 if (ndo
->ndo_vflag
&& (dp
->icmp6_type
== ND_ROUTER_SOLICIT
||
908 dp
->icmp6_type
== ND_ROUTER_ADVERT
||
909 dp
->icmp6_type
== ND_NEIGHBOR_ADVERT
||
910 dp
->icmp6_type
== ND_NEIGHBOR_SOLICIT
||
911 dp
->icmp6_type
== ND_REDIRECT
||
912 dp
->icmp6_type
== ICMP6_HADISCOV_REPLY
||
913 dp
->icmp6_type
== ICMP6_MOBILEPREFIX_ADVERT
))
914 ND_PRINT((ndo
,", length %u", length
));
916 switch (dp
->icmp6_type
) {
917 case ICMP6_DST_UNREACH
:
918 ND_TCHECK(oip
->ip6_dst
);
919 ND_PRINT((ndo
,", %s", tok2str(icmp6_dst_unreach_code_values
,"unknown unreach code (%u)",dp
->icmp6_code
)));
920 switch (dp
->icmp6_code
) {
922 case ICMP6_DST_UNREACH_NOROUTE
: /* fall through */
923 case ICMP6_DST_UNREACH_ADMIN
:
924 case ICMP6_DST_UNREACH_ADDR
:
925 ND_PRINT((ndo
," %s",ip6addr_string(ndo
, &oip
->ip6_dst
)));
927 case ICMP6_DST_UNREACH_BEYONDSCOPE
:
928 ND_PRINT((ndo
," %s, source address %s",
929 ip6addr_string(ndo
, &oip
->ip6_dst
),
930 ip6addr_string(ndo
, &oip
->ip6_src
)));
932 case ICMP6_DST_UNREACH_NOPORT
:
933 if ((ouh
= get_upperlayer(ndo
, (const u_char
*)oip
, &prot
))
937 dport
= EXTRACT_BE_16BITS(&ouh
->uh_dport
);
940 ND_PRINT((ndo
,", %s tcp port %s",
941 ip6addr_string(ndo
, &oip
->ip6_dst
),
942 tcpport_string(ndo
, dport
)));
945 ND_PRINT((ndo
,", %s udp port %s",
946 ip6addr_string(ndo
, &oip
->ip6_dst
),
947 udpport_string(ndo
, dport
)));
950 ND_PRINT((ndo
,", %s protocol %d port %d unreachable",
951 ip6addr_string(ndo
, &oip
->ip6_dst
),
952 oip
->ip6_nxt
, dport
));
957 if (ndo
->ndo_vflag
<= 1) {
958 print_unknown_data(ndo
, bp
,"\n\t",length
);
964 case ICMP6_PACKET_TOO_BIG
:
965 ND_TCHECK(dp
->icmp6_mtu
);
966 ND_PRINT((ndo
,", mtu %u", EXTRACT_BE_32BITS(&dp
->icmp6_mtu
)));
968 case ICMP6_TIME_EXCEEDED
:
969 ND_TCHECK(oip
->ip6_dst
);
970 switch (dp
->icmp6_code
) {
971 case ICMP6_TIME_EXCEED_TRANSIT
:
972 ND_PRINT((ndo
," for %s",
973 ip6addr_string(ndo
, &oip
->ip6_dst
)));
975 case ICMP6_TIME_EXCEED_REASSEMBLY
:
976 ND_PRINT((ndo
," (reassembly)"));
979 ND_PRINT((ndo
,", unknown code (%u)", dp
->icmp6_code
));
983 case ICMP6_PARAM_PROB
:
984 ND_TCHECK(oip
->ip6_dst
);
985 switch (dp
->icmp6_code
) {
986 case ICMP6_PARAMPROB_HEADER
:
987 ND_PRINT((ndo
,", erroneous - octet %u", EXTRACT_BE_32BITS(&dp
->icmp6_pptr
)));
989 case ICMP6_PARAMPROB_NEXTHEADER
:
990 ND_PRINT((ndo
,", next header - octet %u", EXTRACT_BE_32BITS(&dp
->icmp6_pptr
)));
992 case ICMP6_PARAMPROB_OPTION
:
993 ND_PRINT((ndo
,", option - octet %u", EXTRACT_BE_32BITS(&dp
->icmp6_pptr
)));
996 ND_PRINT((ndo
,", code-#%d",
1001 case ICMP6_ECHO_REQUEST
:
1002 case ICMP6_ECHO_REPLY
:
1003 ND_TCHECK(dp
->icmp6_seq
);
1004 ND_PRINT((ndo
,", seq %u", EXTRACT_BE_16BITS(&dp
->icmp6_seq
)));
1006 case ICMP6_MEMBERSHIP_QUERY
:
1007 if (length
== MLD_MINLEN
) {
1008 mld6_print(ndo
, (const u_char
*)dp
);
1009 } else if (length
>= MLDV2_MINLEN
) {
1010 ND_PRINT((ndo
," v2"));
1011 mldv2_query_print(ndo
, (const u_char
*)dp
, length
);
1013 ND_PRINT((ndo
," unknown-version (len %u) ", length
));
1016 case ICMP6_MEMBERSHIP_REPORT
:
1017 mld6_print(ndo
, (const u_char
*)dp
);
1019 case ICMP6_MEMBERSHIP_REDUCTION
:
1020 mld6_print(ndo
, (const u_char
*)dp
);
1022 case ND_ROUTER_SOLICIT
:
1024 if (ndo
->ndo_vflag
) {
1025 icmp6_opt_print(ndo
, (const u_char
*)dp
+ RTSOLLEN
,
1029 case ND_ROUTER_ADVERT
:
1031 if (ndo
->ndo_vflag
) {
1032 const struct nd_router_advert
*p
;
1034 p
= (const struct nd_router_advert
*)dp
;
1035 ND_TCHECK(p
->nd_ra_retransmit
);
1036 ND_PRINT((ndo
,"\n\thop limit %u, Flags [%s]" \
1037 ", pref %s, router lifetime %us, reachable time %us, retrans time %us",
1038 (u_int
)p
->nd_ra_curhoplimit
,
1039 bittok2str(icmp6_opt_ra_flag_values
,"none",(p
->nd_ra_flags_reserved
)),
1040 get_rtpref(p
->nd_ra_flags_reserved
),
1041 EXTRACT_BE_16BITS(&p
->nd_ra_router_lifetime
),
1042 EXTRACT_BE_32BITS(&p
->nd_ra_reachable
),
1043 EXTRACT_BE_32BITS(&p
->nd_ra_retransmit
)));
1045 icmp6_opt_print(ndo
, (const u_char
*)dp
+ RTADVLEN
,
1049 case ND_NEIGHBOR_SOLICIT
:
1051 const struct nd_neighbor_solicit
*p
;
1052 p
= (const struct nd_neighbor_solicit
*)dp
;
1053 ND_TCHECK(p
->nd_ns_target
);
1054 ND_PRINT((ndo
,", who has %s", ip6addr_string(ndo
, &p
->nd_ns_target
)));
1055 if (ndo
->ndo_vflag
) {
1057 icmp6_opt_print(ndo
, (const u_char
*)dp
+ NDSOLLEN
,
1062 case ND_NEIGHBOR_ADVERT
:
1064 const struct nd_neighbor_advert
*p
;
1066 p
= (const struct nd_neighbor_advert
*)dp
;
1067 ND_TCHECK(p
->nd_na_target
);
1068 ND_PRINT((ndo
,", tgt is %s",
1069 ip6addr_string(ndo
, &p
->nd_na_target
)));
1070 if (ndo
->ndo_vflag
) {
1071 ND_PRINT((ndo
,", Flags [%s]",
1072 bittok2str(icmp6_nd_na_flag_values
,
1074 EXTRACT_BE_32BITS(&p
->nd_na_flags_reserved
))));
1076 icmp6_opt_print(ndo
, (const u_char
*)dp
+ NDADVLEN
,
1083 #define RDR(i) ((const struct nd_redirect *)(i))
1084 ND_TCHECK(RDR(dp
)->nd_rd_dst
);
1085 ND_PRINT((ndo
,", %s", ip6addr_string(ndo
, &RDR(dp
)->nd_rd_dst
)));
1086 ND_TCHECK(RDR(dp
)->nd_rd_target
);
1087 ND_PRINT((ndo
," to %s",
1088 ip6addr_string(ndo
, &RDR(dp
)->nd_rd_target
)));
1089 #define REDIRECTLEN 40
1090 if (ndo
->ndo_vflag
) {
1091 icmp6_opt_print(ndo
, (const u_char
*)dp
+ REDIRECTLEN
,
1092 length
- REDIRECTLEN
);
1097 case ICMP6_ROUTER_RENUMBERING
:
1098 icmp6_rrenum_print(ndo
, bp
, ep
);
1100 case ICMP6_NI_QUERY
:
1101 case ICMP6_NI_REPLY
:
1102 icmp6_nodeinfo_print(ndo
, length
, bp
, ep
);
1107 case ICMP6_V2_MEMBERSHIP_REPORT
:
1108 mldv2_report_print(ndo
, (const u_char
*) dp
, length
);
1110 case ICMP6_MOBILEPREFIX_SOLICIT
: /* fall through */
1111 case ICMP6_HADISCOV_REQUEST
:
1112 ND_TCHECK(dp
->icmp6_data16
[0]);
1113 ND_PRINT((ndo
,", id 0x%04x", EXTRACT_BE_16BITS(&dp
->icmp6_data16
[0])));
1115 case ICMP6_HADISCOV_REPLY
:
1116 if (ndo
->ndo_vflag
) {
1117 const struct in6_addr
*in6
;
1120 ND_TCHECK(dp
->icmp6_data16
[0]);
1121 ND_PRINT((ndo
,", id 0x%04x", EXTRACT_BE_16BITS(&dp
->icmp6_data16
[0])));
1122 cp
= (const u_char
*)dp
+ length
;
1123 in6
= (const struct in6_addr
*)(dp
+ 1);
1124 for (; (const u_char
*)in6
< cp
; in6
++) {
1126 ND_PRINT((ndo
,", %s", ip6addr_string(ndo
, in6
)));
1130 case ICMP6_MOBILEPREFIX_ADVERT
:
1131 if (ndo
->ndo_vflag
) {
1132 ND_TCHECK(dp
->icmp6_data16
[0]);
1133 ND_PRINT((ndo
,", id 0x%04x", EXTRACT_BE_16BITS(&dp
->icmp6_data16
[0])));
1134 ND_TCHECK(dp
->icmp6_data16
[1]);
1135 if (dp
->icmp6_data16
[1] & 0xc0)
1136 ND_PRINT((ndo
," "));
1137 if (dp
->icmp6_data16
[1] & 0x80)
1138 ND_PRINT((ndo
,"M"));
1139 if (dp
->icmp6_data16
[1] & 0x40)
1140 ND_PRINT((ndo
,"O"));
1142 icmp6_opt_print(ndo
, (const u_char
*)dp
+ MPADVLEN
,
1146 case ND_RPL_MESSAGE
:
1147 /* plus 4, because struct icmp6_hdr contains 4 bytes of icmp payload */
1148 rpl_print(ndo
, dp
, &dp
->icmp6_data8
[0], length
-sizeof(struct icmp6_hdr
)+4);
1151 ND_PRINT((ndo
,", length %u", length
));
1152 if (ndo
->ndo_vflag
<= 1)
1153 print_unknown_data(ndo
, bp
,"\n\t", length
);
1156 if (!ndo
->ndo_vflag
)
1157 ND_PRINT((ndo
,", length %u", length
));
1160 ND_PRINT((ndo
, "[|icmp6]"));
1163 static const struct udphdr
*
1164 get_upperlayer(netdissect_options
*ndo
, const u_char
*bp
, u_int
*prot
)
1167 const struct ip6_hdr
*ip6
= (const struct ip6_hdr
*)bp
;
1168 const struct udphdr
*uh
;
1169 const struct ip6_hbh
*hbh
;
1170 const struct ip6_frag
*fragh
;
1171 const struct ah
*ah
;
1175 /* 'ep' points to the end of available data. */
1176 ep
= ndo
->ndo_snapend
;
1178 if (!ND_TTEST(ip6
->ip6_nxt
))
1182 hlen
= sizeof(struct ip6_hdr
);
1190 uh
= (const struct udphdr
*)bp
;
1191 if (ND_TTEST(uh
->uh_dport
)) {
1199 case IPPROTO_HOPOPTS
:
1200 case IPPROTO_DSTOPTS
:
1201 case IPPROTO_ROUTING
:
1202 hbh
= (const struct ip6_hbh
*)bp
;
1203 if (!ND_TTEST(hbh
->ip6h_len
))
1206 hlen
= (hbh
->ip6h_len
+ 1) << 3;
1209 case IPPROTO_FRAGMENT
: /* this should be odd, but try anyway */
1210 fragh
= (const struct ip6_frag
*)bp
;
1211 if (!ND_TTEST(fragh
->ip6f_offlg
))
1213 /* fragments with non-zero offset are meaningless */
1214 if ((EXTRACT_BE_16BITS(&fragh
->ip6f_offlg
) & IP6F_OFF_MASK
) != 0)
1216 nh
= fragh
->ip6f_nxt
;
1217 hlen
= sizeof(struct ip6_frag
);
1221 ah
= (const struct ah
*)bp
;
1222 if (!ND_TTEST(ah
->ah_len
))
1225 hlen
= (ah
->ah_len
+ 2) << 2;
1228 default: /* unknown or undecodable header */
1229 *prot
= nh
; /* meaningless, but set here anyway */
1234 return(NULL
); /* should be notreached, though */
1238 icmp6_opt_print(netdissect_options
*ndo
, const u_char
*bp
, int resid
)
1240 const struct nd_opt_hdr
*op
;
1241 const struct nd_opt_prefix_info
*opp
;
1242 const struct nd_opt_mtu
*opm
;
1243 const struct nd_opt_rdnss
*oprd
;
1244 const struct nd_opt_dnssl
*opds
;
1245 const struct nd_opt_advinterval
*opa
;
1246 const struct nd_opt_homeagent_info
*oph
;
1247 const struct nd_opt_route_info
*opri
;
1248 const u_char
*cp
, *ep
, *domp
;
1249 struct in6_addr in6
;
1250 const struct in6_addr
*in6p
;
1254 #define ECHECK(var) if ((const u_char *)&(var) > ep - sizeof(var)) return
1257 /* 'ep' points to the end of available data. */
1258 ep
= ndo
->ndo_snapend
;
1261 op
= (const struct nd_opt_hdr
*)cp
;
1263 ECHECK(op
->nd_opt_len
);
1266 if (op
->nd_opt_len
== 0)
1268 if (cp
+ (op
->nd_opt_len
<< 3) > ep
)
1271 ND_PRINT((ndo
,"\n\t %s option (%u), length %u (%u): ",
1272 tok2str(icmp6_opt_values
, "unknown", op
->nd_opt_type
),
1274 op
->nd_opt_len
<< 3,
1277 switch (op
->nd_opt_type
) {
1278 case ND_OPT_SOURCE_LINKADDR
:
1279 l
= (op
->nd_opt_len
<< 3) - 2;
1280 print_lladdr(ndo
, cp
+ 2, l
);
1282 case ND_OPT_TARGET_LINKADDR
:
1283 l
= (op
->nd_opt_len
<< 3) - 2;
1284 print_lladdr(ndo
, cp
+ 2, l
);
1286 case ND_OPT_PREFIX_INFORMATION
:
1287 opp
= (const struct nd_opt_prefix_info
*)op
;
1288 ND_TCHECK(opp
->nd_opt_pi_prefix
);
1289 ND_PRINT((ndo
,"%s/%u%s, Flags [%s], valid time %s",
1290 ip6addr_string(ndo
, &opp
->nd_opt_pi_prefix
),
1291 opp
->nd_opt_pi_prefix_len
,
1292 (op
->nd_opt_len
!= 4) ? "badlen" : "",
1293 bittok2str(icmp6_opt_pi_flag_values
, "none", opp
->nd_opt_pi_flags_reserved
),
1294 get_lifetime(EXTRACT_BE_32BITS(&opp
->nd_opt_pi_valid_time
))));
1295 ND_PRINT((ndo
,", pref. time %s", get_lifetime(EXTRACT_BE_32BITS(&opp
->nd_opt_pi_preferred_time
))));
1297 case ND_OPT_REDIRECTED_HEADER
:
1298 print_unknown_data(ndo
, bp
,"\n\t ",op
->nd_opt_len
<<3);
1302 opm
= (const struct nd_opt_mtu
*)op
;
1303 ND_TCHECK(opm
->nd_opt_mtu_mtu
);
1304 ND_PRINT((ndo
," %u%s",
1305 EXTRACT_BE_32BITS(&opm
->nd_opt_mtu_mtu
),
1306 (op
->nd_opt_len
!= 1) ? "bad option length" : "" ));
1309 oprd
= (const struct nd_opt_rdnss
*)op
;
1310 l
= (op
->nd_opt_len
- 1) / 2;
1311 ND_PRINT((ndo
," lifetime %us,",
1312 EXTRACT_BE_32BITS(&oprd
->nd_opt_rdnss_lifetime
)));
1313 for (i
= 0; i
< l
; i
++) {
1314 ND_TCHECK(oprd
->nd_opt_rdnss_addr
[i
]);
1315 ND_PRINT((ndo
," addr: %s",
1316 ip6addr_string(ndo
, &oprd
->nd_opt_rdnss_addr
[i
])));
1320 opds
= (const struct nd_opt_dnssl
*)op
;
1321 ND_PRINT((ndo
," lifetime %us, domain(s):",
1322 EXTRACT_BE_32BITS(&opds
->nd_opt_dnssl_lifetime
)));
1323 domp
= cp
+ 8; /* domain names, variable-sized, RFC1035-encoded */
1324 while (domp
< cp
+ (op
->nd_opt_len
<< 3) && *domp
!= '\0')
1326 ND_PRINT((ndo
, " "));
1327 if ((domp
= ns_nprint (ndo
, domp
, bp
)) == NULL
)
1331 case ND_OPT_ADVINTERVAL
:
1332 opa
= (const struct nd_opt_advinterval
*)op
;
1333 ND_TCHECK(opa
->nd_opt_adv_interval
);
1334 ND_PRINT((ndo
," %ums", EXTRACT_BE_32BITS(&opa
->nd_opt_adv_interval
)));
1336 case ND_OPT_HOMEAGENT_INFO
:
1337 oph
= (const struct nd_opt_homeagent_info
*)op
;
1338 ND_TCHECK(oph
->nd_opt_hai_lifetime
);
1339 ND_PRINT((ndo
," preference %u, lifetime %u",
1340 EXTRACT_BE_16BITS(&oph
->nd_opt_hai_preference
),
1341 EXTRACT_BE_16BITS(&oph
->nd_opt_hai_lifetime
)));
1343 case ND_OPT_ROUTE_INFO
:
1344 opri
= (const struct nd_opt_route_info
*)op
;
1345 ND_TCHECK(opri
->nd_opt_rti_lifetime
);
1346 memset(&in6
, 0, sizeof(in6
));
1347 in6p
= (const struct in6_addr
*)(opri
+ 1);
1348 switch (op
->nd_opt_len
) {
1352 ND_TCHECK2(*in6p
, 8);
1353 memcpy(&in6
, opri
+ 1, 8);
1357 memcpy(&in6
, opri
+ 1, sizeof(in6
));
1362 ND_PRINT((ndo
," %s/%u", ip6addr_string(ndo
, &in6
),
1363 opri
->nd_opt_rti_prefixlen
));
1364 ND_PRINT((ndo
,", pref=%s", get_rtpref(opri
->nd_opt_rti_flags
)));
1365 ND_PRINT((ndo
,", lifetime=%s",
1366 get_lifetime(EXTRACT_BE_32BITS(&opri
->nd_opt_rti_lifetime
))));
1369 if (ndo
->ndo_vflag
<= 1) {
1370 print_unknown_data(ndo
,cp
+2,"\n\t ", (op
->nd_opt_len
<< 3) - 2); /* skip option header */
1375 /* do we want to see an additional hexdump ? */
1376 if (ndo
->ndo_vflag
> 1)
1377 print_unknown_data(ndo
, cp
+2,"\n\t ", (op
->nd_opt_len
<< 3) - 2); /* skip option header */
1379 cp
+= op
->nd_opt_len
<< 3;
1380 resid
-= op
->nd_opt_len
<< 3;
1385 ND_PRINT((ndo
, "[ndp opt]"));
1391 mld6_print(netdissect_options
*ndo
, const u_char
*bp
)
1393 const struct mld6_hdr
*mp
= (const struct mld6_hdr
*)bp
;
1396 /* 'ep' points to the end of available data. */
1397 ep
= ndo
->ndo_snapend
;
1399 if ((const u_char
*)mp
+ sizeof(*mp
) > ep
)
1402 ND_PRINT((ndo
,"max resp delay: %d ", EXTRACT_BE_16BITS(&mp
->mld6_maxdelay
)));
1403 ND_PRINT((ndo
,"addr: %s", ip6addr_string(ndo
, &mp
->mld6_addr
)));
1407 mldv2_report_print(netdissect_options
*ndo
, const u_char
*bp
, u_int len
)
1409 const struct icmp6_hdr
*icp
= (const struct icmp6_hdr
*) bp
;
1410 u_int group
, nsrcs
, ngroups
;
1413 /* Minimum len is 8 */
1415 ND_PRINT((ndo
," [invalid len %d]", len
));
1419 ND_TCHECK(icp
->icmp6_data16
[1]);
1420 ngroups
= EXTRACT_BE_16BITS(&icp
->icmp6_data16
[1]);
1421 ND_PRINT((ndo
,", %d group record(s)", ngroups
));
1422 if (ndo
->ndo_vflag
> 0) {
1423 /* Print the group records */
1425 for (i
= 0; i
< ngroups
; i
++) {
1426 /* type(1) + auxlen(1) + numsrc(2) + grp(16) */
1427 if (len
< group
+ 20) {
1428 ND_PRINT((ndo
," [invalid number of groups]"));
1431 ND_TCHECK2(bp
[group
+ 4], sizeof(struct in6_addr
));
1432 ND_PRINT((ndo
," [gaddr %s", ip6addr_string(ndo
, &bp
[group
+ 4])));
1433 ND_PRINT((ndo
," %s", tok2str(mldv2report2str
, " [v2-report-#%d]",
1435 nsrcs
= (bp
[group
+ 2] << 8) + bp
[group
+ 3];
1436 /* Check the number of sources and print them */
1437 if (len
< group
+ 20 + (nsrcs
* sizeof(struct in6_addr
))) {
1438 ND_PRINT((ndo
," [invalid number of sources %d]", nsrcs
));
1441 if (ndo
->ndo_vflag
== 1)
1442 ND_PRINT((ndo
,", %d source(s)", nsrcs
));
1444 /* Print the sources */
1445 ND_PRINT((ndo
," {"));
1446 for (j
= 0; j
< nsrcs
; j
++) {
1447 ND_TCHECK2(bp
[group
+ 20 + j
* sizeof(struct in6_addr
)],
1448 sizeof(struct in6_addr
));
1449 ND_PRINT((ndo
," %s", ip6addr_string(ndo
, &bp
[group
+ 20 + j
* sizeof(struct in6_addr
)])));
1451 ND_PRINT((ndo
," }"));
1453 /* Next group record */
1454 group
+= 20 + nsrcs
* sizeof(struct in6_addr
);
1455 ND_PRINT((ndo
,"]"));
1460 ND_PRINT((ndo
,"[|icmp6]"));
1465 mldv2_query_print(netdissect_options
*ndo
, const u_char
*bp
, u_int len
)
1467 const struct icmp6_hdr
*icp
= (const struct icmp6_hdr
*) bp
;
1473 /* Minimum len is 28 */
1475 ND_PRINT((ndo
," [invalid len %d]", len
));
1478 ND_TCHECK(icp
->icmp6_data16
[0]);
1479 mrc
= EXTRACT_BE_16BITS(&icp
->icmp6_data16
[0]);
1483 mrt
= ((mrc
& 0x0fff) | 0x1000) << (((mrc
& 0x7000) >> 12) + 3);
1485 if (ndo
->ndo_vflag
) {
1486 ND_PRINT((ndo
," [max resp delay=%d]", mrt
));
1488 ND_TCHECK2(bp
[8], sizeof(struct in6_addr
));
1489 ND_PRINT((ndo
," [gaddr %s", ip6addr_string(ndo
, &bp
[8])));
1491 if (ndo
->ndo_vflag
) {
1493 if (bp
[24] & 0x08) {
1494 ND_PRINT((ndo
," sflag"));
1496 if (bp
[24] & 0x07) {
1497 ND_PRINT((ndo
," robustness=%d", bp
[24] & 0x07));
1502 qqi
= ((bp
[25] & 0x0f) | 0x10) << (((bp
[25] & 0x70) >> 4) + 3);
1504 ND_PRINT((ndo
," qqi=%d", qqi
));
1507 ND_TCHECK2(bp
[26], 2);
1508 nsrcs
= EXTRACT_BE_16BITS(bp
+ 26);
1510 if (len
< 28 + nsrcs
* sizeof(struct in6_addr
))
1511 ND_PRINT((ndo
," [invalid number of sources]"));
1512 else if (ndo
->ndo_vflag
> 1) {
1513 ND_PRINT((ndo
," {"));
1514 for (i
= 0; i
< nsrcs
; i
++) {
1515 ND_TCHECK2(bp
[28 + i
* sizeof(struct in6_addr
)],
1516 sizeof(struct in6_addr
));
1517 ND_PRINT((ndo
," %s", ip6addr_string(ndo
, &bp
[28 + i
* sizeof(struct in6_addr
)])));
1519 ND_PRINT((ndo
," }"));
1521 ND_PRINT((ndo
,", %d source(s)", nsrcs
));
1523 ND_PRINT((ndo
,"]"));
1526 ND_PRINT((ndo
,"[|icmp6]"));
1531 dnsname_print(netdissect_options
*ndo
, const u_char
*cp
, const u_char
*ep
)
1535 /* DNS name decoding - no decompression */
1536 ND_PRINT((ndo
,", \""));
1541 ND_PRINT((ndo
,"???"));
1544 while (i
-- && cp
< ep
) {
1545 safeputchar(ndo
, *cp
);
1548 if (cp
+ 1 < ep
&& *cp
)
1549 ND_PRINT((ndo
,"."));
1553 ND_PRINT((ndo
,"."));
1554 } else if (cp
+ 1 == ep
&& *cp
== '\0') {
1558 ND_PRINT((ndo
,"???"));
1563 ND_PRINT((ndo
,"\""));
1567 icmp6_nodeinfo_print(netdissect_options
*ndo
, u_int icmp6len
, const u_char
*bp
, const u_char
*ep
)
1569 const struct icmp6_nodeinfo
*ni6
;
1570 const struct icmp6_hdr
*dp
;
1577 dp
= (const struct icmp6_hdr
*)bp
;
1578 ni6
= (const struct icmp6_nodeinfo
*)bp
;
1581 switch (ni6
->ni_type
) {
1582 case ICMP6_NI_QUERY
:
1583 if (siz
== sizeof(*dp
) + 4) {
1584 /* KAME who-are-you */
1585 ND_PRINT((ndo
," who-are-you request"));
1588 ND_PRINT((ndo
," node information query"));
1590 ND_TCHECK2(*dp
, sizeof(*ni6
));
1591 ni6
= (const struct icmp6_nodeinfo
*)dp
;
1592 ND_PRINT((ndo
," (")); /*)*/
1593 switch (EXTRACT_BE_16BITS(&ni6
->ni_qtype
)) {
1595 ND_PRINT((ndo
,"noop"));
1597 case NI_QTYPE_SUPTYPES
:
1598 ND_PRINT((ndo
,"supported qtypes"));
1599 i
= EXTRACT_BE_16BITS(&ni6
->ni_flags
);
1601 ND_PRINT((ndo
," [%s]", (i
& 0x01) ? "C" : ""));
1604 ND_PRINT((ndo
,"DNS name"));
1606 case NI_QTYPE_NODEADDR
:
1607 ND_PRINT((ndo
,"node addresses"));
1611 /* NI_NODEADDR_FLAG_TRUNCATE undefined for query */
1612 ND_PRINT((ndo
," [%s%s%s%s%s%s]",
1613 (i
& NI_NODEADDR_FLAG_ANYCAST
) ? "a" : "",
1614 (i
& NI_NODEADDR_FLAG_GLOBAL
) ? "G" : "",
1615 (i
& NI_NODEADDR_FLAG_SITELOCAL
) ? "S" : "",
1616 (i
& NI_NODEADDR_FLAG_LINKLOCAL
) ? "L" : "",
1617 (i
& NI_NODEADDR_FLAG_COMPAT
) ? "C" : "",
1618 (i
& NI_NODEADDR_FLAG_ALL
) ? "A" : ""));
1621 ND_PRINT((ndo
,"unknown"));
1625 if (ni6
->ni_qtype
== NI_QTYPE_NOOP
||
1626 ni6
->ni_qtype
== NI_QTYPE_SUPTYPES
) {
1627 if (siz
!= sizeof(*ni6
))
1629 ND_PRINT((ndo
,", invalid len"));
1631 ND_PRINT((ndo
,")"));
1636 /* XXX backward compat, icmp-name-lookup-03 */
1637 if (siz
== sizeof(*ni6
)) {
1638 ND_PRINT((ndo
,", 03 draft"));
1640 ND_PRINT((ndo
,")"));
1644 switch (ni6
->ni_code
) {
1645 case ICMP6_NI_SUBJ_IPV6
:
1647 sizeof(*ni6
) + sizeof(struct in6_addr
)))
1649 if (siz
!= sizeof(*ni6
) + sizeof(struct in6_addr
)) {
1651 ND_PRINT((ndo
,", invalid subject len"));
1654 ND_PRINT((ndo
,", subject=%s",
1655 ip6addr_string(ndo
, ni6
+ 1)));
1657 case ICMP6_NI_SUBJ_FQDN
:
1658 ND_PRINT((ndo
,", subject=DNS name"));
1659 cp
= (const u_char
*)(ni6
+ 1);
1660 if (cp
[0] == ep
- cp
- 1) {
1661 /* icmp-name-lookup-03, pascal string */
1663 ND_PRINT((ndo
,", 03 draft"));
1665 ND_PRINT((ndo
,", \""));
1667 safeputchar(ndo
, *cp
);
1670 ND_PRINT((ndo
,"\""));
1672 dnsname_print(ndo
, cp
, ep
);
1674 case ICMP6_NI_SUBJ_IPV4
:
1675 if (!ND_TTEST2(*dp
, sizeof(*ni6
) + sizeof(struct in_addr
)))
1677 if (siz
!= sizeof(*ni6
) + sizeof(struct in_addr
)) {
1679 ND_PRINT((ndo
,", invalid subject len"));
1682 ND_PRINT((ndo
,", subject=%s",
1683 ipaddr_string(ndo
, ni6
+ 1)));
1686 ND_PRINT((ndo
,", unknown subject"));
1691 ND_PRINT((ndo
,")"));
1694 case ICMP6_NI_REPLY
:
1695 if (icmp6len
> siz
) {
1696 ND_PRINT((ndo
,"[|icmp6: node information reply]"));
1702 ND_TCHECK2(*dp
, sizeof(*ni6
));
1703 ni6
= (const struct icmp6_nodeinfo
*)dp
;
1704 ND_PRINT((ndo
," node information reply"));
1705 ND_PRINT((ndo
," (")); /*)*/
1706 switch (ni6
->ni_code
) {
1707 case ICMP6_NI_SUCCESS
:
1708 if (ndo
->ndo_vflag
) {
1709 ND_PRINT((ndo
,"success"));
1713 case ICMP6_NI_REFUSED
:
1714 ND_PRINT((ndo
,"refused"));
1716 if (siz
!= sizeof(*ni6
))
1718 ND_PRINT((ndo
,", invalid length"));
1720 case ICMP6_NI_UNKNOWN
:
1721 ND_PRINT((ndo
,"unknown"));
1723 if (siz
!= sizeof(*ni6
))
1725 ND_PRINT((ndo
,", invalid length"));
1729 if (ni6
->ni_code
!= ICMP6_NI_SUCCESS
) {
1731 ND_PRINT((ndo
,")"));
1735 switch (EXTRACT_BE_16BITS(&ni6
->ni_qtype
)) {
1738 ND_PRINT((ndo
,", "));
1739 ND_PRINT((ndo
,"noop"));
1740 if (siz
!= sizeof(*ni6
))
1742 ND_PRINT((ndo
,", invalid length"));
1744 case NI_QTYPE_SUPTYPES
:
1746 ND_PRINT((ndo
,", "));
1747 ND_PRINT((ndo
,"supported qtypes"));
1748 i
= EXTRACT_BE_16BITS(&ni6
->ni_flags
);
1750 ND_PRINT((ndo
," [%s]", (i
& 0x01) ? "C" : ""));
1754 ND_PRINT((ndo
,", "));
1755 ND_PRINT((ndo
,"DNS name"));
1756 cp
= (const u_char
*)(ni6
+ 1) + 4;
1758 if (cp
[0] == ep
- cp
- 1) {
1759 /* icmp-name-lookup-03, pascal string */
1761 ND_PRINT((ndo
,", 03 draft"));
1763 ND_PRINT((ndo
,", \""));
1765 safeputchar(ndo
, *cp
);
1768 ND_PRINT((ndo
,"\""));
1770 dnsname_print(ndo
, cp
, ep
);
1771 if ((EXTRACT_BE_16BITS(&ni6
->ni_flags
) & 0x01) != 0)
1772 ND_PRINT((ndo
," [TTL=%u]", EXTRACT_BE_32BITS(ni6
+ 1)));
1774 case NI_QTYPE_NODEADDR
:
1776 ND_PRINT((ndo
,", "));
1777 ND_PRINT((ndo
,"node addresses"));
1780 if (i
+ sizeof(struct in6_addr
) + sizeof(int32_t) > siz
)
1782 ND_PRINT((ndo
," %s", ip6addr_string(ndo
, bp
+ i
)));
1783 i
+= sizeof(struct in6_addr
);
1784 ND_PRINT((ndo
,"(%d)", (int32_t) EXTRACT_BE_32BITS(bp
+ i
)));
1785 i
+= sizeof(int32_t);
1790 ND_PRINT((ndo
," [%s%s%s%s%s%s%s]",
1791 (i
& NI_NODEADDR_FLAG_ANYCAST
) ? "a" : "",
1792 (i
& NI_NODEADDR_FLAG_GLOBAL
) ? "G" : "",
1793 (i
& NI_NODEADDR_FLAG_SITELOCAL
) ? "S" : "",
1794 (i
& NI_NODEADDR_FLAG_LINKLOCAL
) ? "L" : "",
1795 (i
& NI_NODEADDR_FLAG_COMPAT
) ? "C" : "",
1796 (i
& NI_NODEADDR_FLAG_ALL
) ? "A" : "",
1797 (i
& NI_NODEADDR_FLAG_TRUNCATE
) ? "T" : ""));
1801 ND_PRINT((ndo
,", "));
1802 ND_PRINT((ndo
,"unknown"));
1807 ND_PRINT((ndo
,")"));
1813 ND_PRINT((ndo
, "[|icmp6]"));
1817 icmp6_rrenum_print(netdissect_options
*ndo
, const u_char
*bp
, const u_char
*ep
)
1819 const struct icmp6_router_renum
*rr6
;
1821 const struct rr_pco_match
*match
;
1822 const struct rr_pco_use
*use
;
1823 char hbuf
[NI_MAXHOST
];
1828 rr6
= (const struct icmp6_router_renum
*)bp
;
1829 cp
= (const char *)(rr6
+ 1);
1831 ND_TCHECK(rr6
->rr_reserved
);
1832 switch (rr6
->rr_code
) {
1833 case ICMP6_ROUTER_RENUMBERING_COMMAND
:
1834 ND_PRINT((ndo
,"router renum: command"));
1836 case ICMP6_ROUTER_RENUMBERING_RESULT
:
1837 ND_PRINT((ndo
,"router renum: result"));
1839 case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET
:
1840 ND_PRINT((ndo
,"router renum: sequence number reset"));
1843 ND_PRINT((ndo
,"router renum: code-#%d", rr6
->rr_code
));
1847 ND_PRINT((ndo
,", seq=%u", EXTRACT_BE_32BITS(&rr6
->rr_seqnum
)));
1849 if (ndo
->ndo_vflag
) {
1850 #define F(x, y) ((rr6->rr_flags) & (x) ? (y) : "")
1851 ND_PRINT((ndo
,"[")); /*]*/
1852 if (rr6
->rr_flags
) {
1853 ND_PRINT((ndo
,"%s%s%s%s%s,", F(ICMP6_RR_FLAGS_TEST
, "T"),
1854 F(ICMP6_RR_FLAGS_REQRESULT
, "R"),
1855 F(ICMP6_RR_FLAGS_FORCEAPPLY
, "A"),
1856 F(ICMP6_RR_FLAGS_SPECSITE
, "S"),
1857 F(ICMP6_RR_FLAGS_PREVDONE
, "P")));
1859 ND_PRINT((ndo
,"seg=%u,", rr6
->rr_segnum
));
1860 ND_PRINT((ndo
,"maxdelay=%u", EXTRACT_BE_16BITS(&rr6
->rr_maxdelay
)));
1861 if (rr6
->rr_reserved
)
1862 ND_PRINT((ndo
,"rsvd=0x%x", EXTRACT_BE_32BITS(&rr6
->rr_reserved
)));
1864 ND_PRINT((ndo
,"]"));
1868 if (rr6
->rr_code
== ICMP6_ROUTER_RENUMBERING_COMMAND
) {
1869 match
= (const struct rr_pco_match
*)cp
;
1870 cp
= (const char *)(match
+ 1);
1872 ND_TCHECK(match
->rpm_prefix
);
1874 if (ndo
->ndo_vflag
> 1)
1875 ND_PRINT((ndo
,"\n\t"));
1877 ND_PRINT((ndo
," "));
1878 ND_PRINT((ndo
,"match(")); /*)*/
1879 switch (match
->rpm_code
) {
1880 case RPM_PCO_ADD
: ND_PRINT((ndo
,"add")); break;
1881 case RPM_PCO_CHANGE
: ND_PRINT((ndo
,"change")); break;
1882 case RPM_PCO_SETGLOBAL
: ND_PRINT((ndo
,"setglobal")); break;
1883 default: ND_PRINT((ndo
,"#%u", match
->rpm_code
)); break;
1886 if (ndo
->ndo_vflag
) {
1887 ND_PRINT((ndo
,",ord=%u", match
->rpm_ordinal
));
1888 ND_PRINT((ndo
,",min=%u", match
->rpm_minlen
));
1889 ND_PRINT((ndo
,",max=%u", match
->rpm_maxlen
));
1891 if (addrtostr6(&match
->rpm_prefix
, hbuf
, sizeof(hbuf
)))
1892 ND_PRINT((ndo
,",%s/%u", hbuf
, match
->rpm_matchlen
));
1894 ND_PRINT((ndo
,",?/%u", match
->rpm_matchlen
));
1896 ND_PRINT((ndo
,")"));
1898 n
= match
->rpm_len
- 3;
1903 use
= (const struct rr_pco_use
*)cp
;
1904 cp
= (const char *)(use
+ 1);
1906 ND_TCHECK(use
->rpu_prefix
);
1908 if (ndo
->ndo_vflag
> 1)
1909 ND_PRINT((ndo
,"\n\t"));
1911 ND_PRINT((ndo
," "));
1912 ND_PRINT((ndo
,"use(")); /*)*/
1913 if (use
->rpu_flags
) {
1914 #define F(x, y) ((use->rpu_flags) & (x) ? (y) : "")
1915 ND_PRINT((ndo
,"%s%s,",
1916 F(ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME
, "V"),
1917 F(ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME
, "P")));
1920 if (ndo
->ndo_vflag
) {
1921 ND_PRINT((ndo
,"mask=0x%x,", use
->rpu_ramask
));
1922 ND_PRINT((ndo
,"raflags=0x%x,", use
->rpu_raflags
));
1923 if (~use
->rpu_vltime
== 0)
1924 ND_PRINT((ndo
,"vltime=infty,"));
1926 ND_PRINT((ndo
,"vltime=%u,",
1927 EXTRACT_BE_32BITS(&use
->rpu_vltime
)));
1928 if (~use
->rpu_pltime
== 0)
1929 ND_PRINT((ndo
,"pltime=infty,"));
1931 ND_PRINT((ndo
,"pltime=%u,",
1932 EXTRACT_BE_32BITS(&use
->rpu_pltime
)));
1934 if (addrtostr6(&use
->rpu_prefix
, hbuf
, sizeof(hbuf
)))
1935 ND_PRINT((ndo
,"%s/%u/%u", hbuf
, use
->rpu_uselen
,
1938 ND_PRINT((ndo
,"?/%u/%u", use
->rpu_uselen
,
1941 ND_PRINT((ndo
,")"));
1948 ND_PRINT((ndo
,"[|icmp6]"));
1953 * c-style: whitesmith