2 * Routines for IPv6 packet disassembly
4 * $Id: packet-ipv6.c,v 1.96 2003/04/20 08:06:01 guy Exp $
6 * Ethereal - Network traffic analyzer
7 * By Gerald Combs <gerald@ethereal.com>
8 * Copyright 1998 Gerald Combs
10 * MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@siemens.hr>
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 #include <epan/packet.h>
35 #include "packet-ip.h"
36 #include "packet-ipsec.h"
37 #include "packet-ipv6.h"
38 #include <epan/resolv.h>
40 #include "reassemble.h"
46 #include "arcnet_pids.h"
49 * NOTE: ipv6.nxt is not very useful as we will have chained header.
50 * now testing ipv6.final, but it raises SEGV.
54 static int proto_ipv6 = -1;
55 static int hf_ipv6_version = -1;
56 static int hf_ipv6_class = -1;
57 static int hf_ipv6_flow = -1;
58 static int hf_ipv6_plen = -1;
59 static int hf_ipv6_nxt = -1;
60 static int hf_ipv6_hlim = -1;
61 static int hf_ipv6_src = -1;
62 static int hf_ipv6_dst = -1;
63 static int hf_ipv6_addr = -1;
65 static int hf_ipv6_final = -1;
67 static int hf_ipv6_fragments = -1;
68 static int hf_ipv6_fragment = -1;
69 static int hf_ipv6_fragment_overlap = -1;
70 static int hf_ipv6_fragment_overlap_conflict = -1;
71 static int hf_ipv6_fragment_multiple_tails = -1;
72 static int hf_ipv6_fragment_too_long_fragment = -1;
73 static int hf_ipv6_fragment_error = -1;
74 static int hf_ipv6_reassembled_in = -1;
76 static int hf_ipv6_mipv6_type = -1;
77 static int hf_ipv6_mipv6_length = -1;
78 static int hf_ipv6_mipv6_home_address = -1;
80 static gint ett_ipv6 = -1;
81 static gint ett_ipv6_fragments = -1;
82 static gint ett_ipv6_fragment = -1;
84 static const fragment_items ipv6_frag_items = {
89 &hf_ipv6_fragment_overlap,
90 &hf_ipv6_fragment_overlap_conflict,
91 &hf_ipv6_fragment_multiple_tails,
92 &hf_ipv6_fragment_too_long_fragment,
93 &hf_ipv6_fragment_error,
97 static dissector_handle_t data_handle;
99 /* Reassemble fragmented datagrams */
100 static gboolean ipv6_reassemble = FALSE;
103 #define offsetof(type, member) ((size_t)(&((type *)0)->member))
107 * defragmentation of IPv6
109 static GHashTable *ipv6_fragment_table = NULL;
110 static GHashTable *ipv6_reassembled_table = NULL;
113 capture_ipv6(const guchar *pd, int offset, int len, packet_counts *ld)
118 if (!BYTES_ARE_IN_FRAME(offset, len, 4+4+16+16)) {
122 nxt = pd[offset+6]; /* get the "next header" value */
123 offset += 4+4+16+16; /* skip past the IPv6 header */
128 case IP_PROTO_HOPOPTS:
129 case IP_PROTO_ROUTING:
130 case IP_PROTO_DSTOPTS:
131 if (!BYTES_ARE_IN_FRAME(offset, len, 2)) {
136 advance = (pd[offset+1] + 1) << 3;
137 if (!BYTES_ARE_IN_FRAME(offset, len, advance)) {
144 case IP_PROTO_FRAGMENT:
145 if (!BYTES_ARE_IN_FRAME(offset, len, 2)) {
151 if (!BYTES_ARE_IN_FRAME(offset, len, advance)) {
159 if (!BYTES_ARE_IN_FRAME(offset, len, 2)) {
164 advance = 8 + ((pd[offset+1] - 1) << 2);
165 if (!BYTES_ARE_IN_FRAME(offset, len, advance)) {
185 case IP_PROTO_ICMPV6: /* XXX - separate counters? */
203 ipv6_reassemble_init(void)
205 fragment_table_init(&ipv6_fragment_table);
206 reassembled_table_init(&ipv6_reassembled_table);
210 dissect_routing6(tvbuff_t *tvb, int offset, proto_tree *tree) {
213 proto_tree *rthdr_tree;
215 char buf[sizeof(struct ip6_rthdr0) + sizeof(struct e_in6_addr) * 23];
217 tvb_memcpy(tvb, (guint8 *)&rt, offset, sizeof(rt));
218 len = (rt.ip6r_len + 1) << 3;
221 /* !!! specify length */
222 ti = proto_tree_add_text(tree, tvb, offset, len,
223 "Routing Header, Type %u", rt.ip6r_type);
224 rthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
226 proto_tree_add_text(rthdr_tree, tvb,
227 offset + offsetof(struct ip6_rthdr, ip6r_nxt), 1,
228 "Next header: %s (0x%02x)", ipprotostr(rt.ip6r_nxt), rt.ip6r_nxt);
229 proto_tree_add_text(rthdr_tree, tvb,
230 offset + offsetof(struct ip6_rthdr, ip6r_len), 1,
231 "Length: %u (%d bytes)", rt.ip6r_len, len);
232 proto_tree_add_text(rthdr_tree, tvb,
233 offset + offsetof(struct ip6_rthdr, ip6r_type), 1,
234 "Type: %u", rt.ip6r_type);
235 proto_tree_add_text(rthdr_tree, tvb,
236 offset + offsetof(struct ip6_rthdr, ip6r_segleft), 1,
237 "Segments left: %u", rt.ip6r_segleft);
239 if (rt.ip6r_type == 0 && len <= sizeof(buf)) {
240 struct e_in6_addr *a;
242 struct ip6_rthdr0 *rt0;
244 tvb_memcpy(tvb, buf, offset, len);
245 rt0 = (struct ip6_rthdr0 *)buf;
246 for (a = rt0->ip6r0_addr, n = 0;
247 a < (struct e_in6_addr *)(buf + len);
249 proto_tree_add_text(rthdr_tree, tvb,
250 offset + offsetof(struct ip6_rthdr0, ip6r0_addr) + n * sizeof(struct e_in6_addr),
251 sizeof(struct e_in6_addr),
253 "address %d: %s (%s)",
254 n, get_hostname6(a), ip6_to_str(a)
256 "address %d: %s", n, ip6_to_str(a)
261 if (rt.ip6r_type == 2) {
262 proto_tree_add_ipv6(rthdr_tree, hf_ipv6_mipv6_home_address,
264 tvb_get_ptr(tvb, offset + 8, 16));
272 dissect_frag6(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree,
273 guint16 *offlg, guint32 *ident) {
274 struct ip6_frag frag;
277 proto_tree *rthdr_tree;
279 tvb_memcpy(tvb, (guint8 *)&frag, offset, sizeof(frag));
281 frag.ip6f_offlg = g_ntohs(frag.ip6f_offlg);
282 *offlg = frag.ip6f_offlg;
283 *ident = frag.ip6f_ident;
284 if (check_col(pinfo->cinfo, COL_INFO)) {
285 col_add_fstr(pinfo->cinfo, COL_INFO,
286 "IPv6 fragment (nxt=%s (0x%02x) off=%u id=0x%x)",
287 ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt,
288 frag.ip6f_offlg & IP6F_OFF_MASK, frag.ip6f_ident);
291 ti = proto_tree_add_text(tree, tvb, offset, len,
292 "Fragmentation Header");
293 rthdr_tree = proto_item_add_subtree(ti, ett_ipv6);
295 proto_tree_add_text(rthdr_tree, tvb,
296 offset + offsetof(struct ip6_frag, ip6f_nxt), 1,
297 "Next header: %s (0x%02x)",
298 ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt);
301 proto_tree_add_text(rthdr_tree, tvb,
302 offset + offsetof(struct ip6_frag, ip6f_reserved), 1,
307 proto_tree_add_text(rthdr_tree, tvb,
308 offset + offsetof(struct ip6_frag, ip6f_offlg), 2,
310 frag.ip6f_offlg & IP6F_OFF_MASK);
312 proto_tree_add_text(rthdr_tree, tvb,
313 offset + offsetof(struct ip6_frag, ip6f_offlg), 2,
314 "More fragments: %s",
315 frag.ip6f_offlg & IP6F_MORE_FRAG ?
318 proto_tree_add_text(rthdr_tree, tvb,
319 offset + offsetof(struct ip6_frag, ip6f_ident), 4,
320 "Identification: 0x%08x",
327 dissect_mipv6_hoa(tvbuff_t *tvb, proto_tree *dstopt_tree, int offset)
331 proto_tree_add_uint_format(dstopt_tree, hf_ipv6_mipv6_type, tvb,
333 tvb_get_guint8(tvb, offset + len),
334 "Option Type: %u (0x%02x) - Home Address Option",
335 tvb_get_guint8(tvb, offset + len),
336 tvb_get_guint8(tvb, offset + len));
339 proto_tree_add_uint(dstopt_tree, hf_ipv6_mipv6_length, tvb, offset + len,
340 1, tvb_get_guint8(tvb, offset + len));
343 proto_tree_add_ipv6(dstopt_tree, hf_ipv6_mipv6_home_address, tvb,
344 offset + len, 16, tvb_get_ptr(tvb, offset + len, 16));
349 static const value_string rtalertvals[] = {
350 { IP6OPT_RTALERT_MLD, "MLD" },
351 { IP6OPT_RTALERT_RSVP, "RSVP" },
356 dissect_opts(tvbuff_t *tvb, int offset, proto_tree *tree, char *optname)
360 proto_tree *dstopt_tree;
364 int mip_offset = 0, delta = 0;
366 tvb_memcpy(tvb, (guint8 *)&ext, offset, sizeof(ext));
367 len = (ext.ip6e_len + 1) << 3;
370 /* !!! specify length */
371 ti = proto_tree_add_text(tree, tvb, offset, len, "%s Header ", optname);
373 dstopt_tree = proto_item_add_subtree(ti, ett_ipv6);
375 proto_tree_add_text(dstopt_tree, tvb,
376 offset + offsetof(struct ip6_ext, ip6e_nxt), 1,
377 "Next header: %s (0x%02x)", ipprotostr(ext.ip6e_nxt), ext.ip6e_nxt);
378 proto_tree_add_text(dstopt_tree, tvb,
379 offset + offsetof(struct ip6_ext, ip6e_len), 1,
380 "Length: %u (%d bytes)", ext.ip6e_len, len);
387 while (p < offset + len) {
388 switch (tvb_get_guint8(tvb, p)) {
390 proto_tree_add_text(dstopt_tree, tvb, p, 1, "Pad1");
395 tmp = tvb_get_guint8(tvb, p + 1);
396 proto_tree_add_text(dstopt_tree, tvb, p, tmp + 2,
397 "PadN: %u bytes", tmp + 2);
400 mip_offset += tvb_get_guint8(tvb, mip_offset + 1) + 2;
403 tmp = tvb_get_guint8(tvb, p + 1);
405 proto_tree_add_text(dstopt_tree, tvb, p, tmp + 2,
406 "Jumbo payload: %u (%u bytes)",
407 tvb_get_ntohl(tvb, p + 2), tmp + 2);
409 proto_tree_add_text(dstopt_tree, tvb, p, tmp + 2,
410 "Jumbo payload: Invalid length (%u bytes)",
415 mip_offset += tvb_get_guint8(tvb, mip_offset+1)+2;
421 tmp = tvb_get_guint8(tvb, p + 1);
423 rta = val_to_str(tvb_get_ntohs(tvb, p + 2), rtalertvals,
426 rta = "Invalid length";
427 ti = proto_tree_add_text(dstopt_tree, tvb, p , tmp + 2,
428 "Router alert: %s (%u bytes)", rta, tmp + 2);
431 mip_offset += tvb_get_guint8(tvb, mip_offset + 1) + 2;
434 case IP6OPT_HOME_ADDRESS:
435 delta = dissect_mipv6_hoa(tvb, dstopt_tree, mip_offset);
451 dissect_hopopts(tvbuff_t *tvb, int offset, proto_tree *tree)
453 return dissect_opts(tvb, offset, tree, "Hop-by-hop Option");
457 dissect_dstopts(tvbuff_t *tvb, int offset, proto_tree *tree)
459 return dissect_opts(tvb, offset, tree, "Destination Option");
463 dissect_ipv6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
465 proto_tree *ipv6_tree = NULL;
471 gboolean hopopts, routing, frag, ah, dstopts;
475 fragment_data *ipfd_head;
477 gboolean update_col_info = TRUE;
478 gboolean save_fragmented;
482 if (check_col(pinfo->cinfo, COL_PROTOCOL))
483 col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPv6");
484 if (check_col(pinfo->cinfo, COL_INFO))
485 col_clear(pinfo->cinfo, COL_INFO);
488 tvb_memcpy(tvb, (guint8 *)&ipv6, offset, sizeof(ipv6));
490 pinfo->ipproto = ipv6.ip6_nxt; /* XXX make work TCP follow (ipproto = 6) */
492 /* Get the payload length */
493 plen = g_ntohs(ipv6.ip6_plen);
495 /* Adjust the length of this tvbuff to include only the IPv6 datagram. */
496 set_actual_length(tvb, plen + sizeof (struct ip6_hdr));
498 SET_ADDRESS(&pinfo->net_src, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_SRC, 16));
499 SET_ADDRESS(&pinfo->src, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_SRC, 16));
500 SET_ADDRESS(&pinfo->net_dst, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_DST, 16));
501 SET_ADDRESS(&pinfo->dst, AT_IPv6, 16, tvb_get_ptr(tvb, offset + IP6H_DST, 16));
504 /* !!! specify length */
505 ti = proto_tree_add_item(tree, proto_ipv6, tvb, offset, 40, FALSE);
506 ipv6_tree = proto_item_add_subtree(ti, ett_ipv6);
508 /* !!! warning: version also contains 4 Bit priority */
509 proto_tree_add_uint(ipv6_tree, hf_ipv6_version, tvb,
510 offset + offsetof(struct ip6_hdr, ip6_vfc), 1,
511 (ipv6.ip6_vfc >> 4) & 0x0f);
513 proto_tree_add_uint(ipv6_tree, hf_ipv6_class, tvb,
514 offset + offsetof(struct ip6_hdr, ip6_flow), 4,
515 (guint8)((g_ntohl(ipv6.ip6_flow) >> 20) & 0xff));
518 * there should be no alignment problems for ip6_flow, since it's the first
519 * guint32 in the ipv6 struct
521 proto_tree_add_uint_format(ipv6_tree, hf_ipv6_flow, tvb,
522 offset + offsetof(struct ip6_hdr, ip6_flow), 4,
523 (unsigned long)(g_ntohl(ipv6.ip6_flow) & IPV6_FLOWLABEL_MASK),
524 "Flowlabel: 0x%05lx",
525 (unsigned long)(g_ntohl(ipv6.ip6_flow) & IPV6_FLOWLABEL_MASK));
527 proto_tree_add_uint(ipv6_tree, hf_ipv6_plen, tvb,
528 offset + offsetof(struct ip6_hdr, ip6_plen), 2,
531 proto_tree_add_uint_format(ipv6_tree, hf_ipv6_nxt, tvb,
532 offset + offsetof(struct ip6_hdr, ip6_nxt), 1,
534 "Next header: %s (0x%02x)",
535 ipprotostr(ipv6.ip6_nxt), ipv6.ip6_nxt);
537 proto_tree_add_uint(ipv6_tree, hf_ipv6_hlim, tvb,
538 offset + offsetof(struct ip6_hdr, ip6_hlim), 1,
541 proto_tree_add_ipv6_hidden(ipv6_tree, hf_ipv6_addr, tvb,
542 offset + offsetof(struct ip6_hdr, ip6_src), 16,
543 ipv6.ip6_src.s6_addr8);
544 proto_tree_add_ipv6_hidden(ipv6_tree, hf_ipv6_addr, tvb,
545 offset + offsetof(struct ip6_hdr, ip6_dst), 16,
546 ipv6.ip6_dst.s6_addr8);
548 proto_tree_add_ipv6_format(ipv6_tree, hf_ipv6_src, tvb,
549 offset + offsetof(struct ip6_hdr, ip6_src), 16,
550 (guint8 *)&ipv6.ip6_src,
552 "Source address: %s (%s)",
553 get_hostname6(&ipv6.ip6_src),
555 "Source address: %s",
557 ip6_to_str(&ipv6.ip6_src));
559 proto_tree_add_ipv6_format(ipv6_tree, hf_ipv6_dst, tvb,
560 offset + offsetof(struct ip6_hdr, ip6_dst), 16,
561 (guint8 *)&ipv6.ip6_dst,
563 "Destination address: %s (%s)",
564 get_hostname6(&ipv6.ip6_dst),
566 "Destination address: %s",
568 ip6_to_str(&ipv6.ip6_dst));
571 /* start of the new header (could be a extension header) */
572 poffset = offset + offsetof(struct ip6_hdr, ip6_nxt);
573 nxt = tvb_get_guint8(tvb, poffset);
574 offset += sizeof(struct ip6_hdr);
578 /* start out assuming this isn't fragmented, and has none of the other
588 case IP_PROTO_HOPOPTS:
590 advance = dissect_hopopts(tvb, offset, tree);
591 nxt = tvb_get_guint8(tvb, offset);
596 case IP_PROTO_ROUTING:
598 advance = dissect_routing6(tvb, offset, tree);
599 nxt = tvb_get_guint8(tvb, offset);
604 case IP_PROTO_FRAGMENT:
606 advance = dissect_frag6(tvb, offset, pinfo, tree,
608 nxt = tvb_get_guint8(tvb, offset);
615 advance = dissect_ah_header(
616 tvb_new_subset(tvb, offset, -1, -1),
617 pinfo, tree, NULL, NULL);
618 nxt = tvb_get_guint8(tvb, offset);
623 case IP_PROTO_DSTOPTS:
625 advance = dissect_dstopts(tvb, offset, tree);
626 nxt = tvb_get_guint8(tvb, offset);
634 proto_tree_add_uint_hidden(ipv6_tree, hf_ipv6_final, tvb, poffset, 1, nxt);
637 /* If ipv6_reassemble is on, this is a fragment, and we have all the data
638 * in the fragment, then just add the fragment to the hashtable.
640 save_fragmented = pinfo->fragmented;
641 if (ipv6_reassemble && frag && tvb_bytes_exist(tvb, offset, plen)) {
642 ipfd_head = fragment_add_check(tvb, offset, pinfo, ident,
644 ipv6_reassembled_table,
645 offlg & IP6F_OFF_MASK,
647 offlg & IP6F_MORE_FRAG);
648 next_tvb = process_reassembled_data(tvb, pinfo, "Reassembled IPv6",
649 ipfd_head, &ipv6_frag_items, hf_ipv6_reassembled_in, &update_col_info,
652 /* If this is the first fragment, dissect its contents, otherwise
653 just show it as a fragment.
655 XXX - if we eventually don't save the reassembled contents of all
656 fragmented datagrams, we may want to always reassemble. */
657 if (offlg & IP6F_OFF_MASK) {
658 /* Not the first fragment - don't dissect it. */
661 /* First fragment, or not fragmented. Dissect what we have here. */
663 /* Get a tvbuff for the payload. */
664 next_tvb = tvb_new_subset(tvb, offset, -1, -1);
667 * If this is the first fragment, but not the only fragment,
668 * tell the next protocol that.
670 if (offlg & IP6F_MORE_FRAG)
671 pinfo->fragmented = TRUE;
673 pinfo->fragmented = FALSE;
677 if (next_tvb == NULL) {
678 /* Just show this as a fragment. */
679 /* COL_INFO was filled in by "dissect_frag6()" */
680 call_dissector(data_handle, tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
682 /* As we haven't reassembled anything, we haven't changed "pi", so
683 we don't have to restore it. */
684 pinfo->fragmented = save_fragmented;
688 /* do lookup with the subdissector table */
689 if (!dissector_try_port(ip_dissector_table, nxt, next_tvb, pinfo, tree)) {
691 Handle "no next header" specially. */
692 if (nxt == IP_PROTO_NONE) {
693 if (check_col(pinfo->cinfo, COL_INFO)) {
694 /* If we had an Authentication Header, the AH dissector already
695 put something in the Info column; leave it there. */
697 if (hopopts || routing || dstopts) {
700 col_append_fstr(pinfo->cinfo, COL_INFO, "%shop-by-hop options",
705 col_append_fstr(pinfo->cinfo, COL_INFO, "%srouting", sep);
709 col_append_fstr(pinfo->cinfo, COL_INFO, "%sdestination options",
713 col_set_str(pinfo->cinfo, COL_INFO, "IPv6 no next header");
717 if (check_col(pinfo->cinfo, COL_INFO))
718 col_add_fstr(pinfo->cinfo, COL_INFO, "%s (0x%02x)", ipprotostr(nxt),nxt);
720 call_dissector(data_handle, next_tvb, pinfo, tree);
722 pinfo->fragmented = save_fragmented;
726 proto_register_ipv6(void)
728 static hf_register_info hf[] = {
730 { "Version", "ipv6.version",
731 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
733 { "Traffic class", "ipv6.class",
734 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
736 { "Flowlabel", "ipv6.flow",
737 FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
739 { "Payload length", "ipv6.plen",
740 FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
742 { "Next header", "ipv6.nxt",
743 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
745 { "Hop limit", "ipv6.hlim",
746 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
748 { "Source", "ipv6.src",
749 FT_IPv6, BASE_NONE, NULL, 0x0,
750 "Source IPv6 Address", HFILL }},
752 { "Destination", "ipv6.dst",
753 FT_IPv6, BASE_NONE, NULL, 0x0,
754 "Destination IPv6 Address", HFILL }},
756 { "Address", "ipv6.addr",
757 FT_IPv6, BASE_NONE, NULL, 0x0,
758 "Source or Destination IPv6 Address", HFILL }},
760 { &hf_ipv6_fragment_overlap,
761 { "Fragment overlap", "ipv6.fragment.overlap",
762 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
763 "Fragment overlaps with other fragments", HFILL }},
765 { &hf_ipv6_fragment_overlap_conflict,
766 { "Conflicting data in fragment overlap", "ipv6.fragment.overlap.conflict",
767 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
768 "Overlapping fragments contained conflicting data", HFILL }},
770 { &hf_ipv6_fragment_multiple_tails,
771 { "Multiple tail fragments found", "ipv6.fragment.multipletails",
772 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
773 "Several tails were found when defragmenting the packet", HFILL }},
775 { &hf_ipv6_fragment_too_long_fragment,
776 { "Fragment too long", "ipv6.fragment.toolongfragment",
777 FT_BOOLEAN, BASE_NONE, NULL, 0x0,
778 "Fragment contained data past end of packet", HFILL }},
780 { &hf_ipv6_fragment_error,
781 { "Defragmentation error", "ipv6.fragment.error",
782 FT_FRAMENUM, BASE_NONE, NULL, 0x0,
783 "Defragmentation error due to illegal fragments", HFILL }},
786 { "IPv6 Fragment", "ipv6.fragment",
787 FT_FRAMENUM, BASE_NONE, NULL, 0x0,
788 "IPv6 Fragment", HFILL }},
790 { &hf_ipv6_fragments,
791 { "IPv6 Fragments", "ipv6.fragments",
792 FT_NONE, BASE_NONE, NULL, 0x0,
793 "IPv6 Fragments", HFILL }},
795 { &hf_ipv6_reassembled_in,
796 { "Reassembled IPv6 in frame", "ipv6.reassembled_in",
797 FT_FRAMENUM, BASE_NONE, NULL, 0x0,
798 "This IPv6 packet is reassembled in this frame", HFILL }},
801 { &hf_ipv6_mipv6_type,
802 { "Option Type ", "ipv6.mipv6_type",
803 FT_UINT8, BASE_DEC, NULL, 0x0,
805 { &hf_ipv6_mipv6_length,
806 { "Option Length ", "ipv6.mipv6_length",
807 FT_UINT8, BASE_DEC, NULL, 0x0,
809 { &hf_ipv6_mipv6_home_address,
810 { "Home Address ", "ipv6.mipv6_home_address",
811 FT_IPv6, BASE_HEX, NULL, 0x0,
816 { "Final next header", "ipv6.final",
817 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
820 static gint *ett[] = {
825 module_t *ipv6_module;
827 proto_ipv6 = proto_register_protocol("Internet Protocol Version 6", "IPv6", "ipv6");
828 proto_register_field_array(proto_ipv6, hf, array_length(hf));
829 proto_register_subtree_array(ett, array_length(ett));
831 /* Register configuration options */
832 ipv6_module = prefs_register_protocol(proto_ipv6, NULL);
833 prefs_register_bool_preference(ipv6_module, "defragment",
834 "Reassemble fragmented IPv6 datagrams",
835 "Whether fragmented IPv6 datagrams should be reassembled",
838 register_dissector("ipv6", dissect_ipv6, proto_ipv6);
839 register_init_routine(ipv6_reassemble_init);
843 proto_reg_handoff_ipv6(void)
845 dissector_handle_t ipv6_handle;
847 data_handle = find_dissector("data");
848 ipv6_handle = find_dissector("ipv6");
849 dissector_add("ethertype", ETHERTYPE_IPv6, ipv6_handle);
850 dissector_add("ppp.protocol", PPP_IPV6, ipv6_handle);
851 dissector_add("ppp.protocol", ETHERTYPE_IPv6, ipv6_handle);
852 dissector_add("gre.proto", ETHERTYPE_IPv6, ipv6_handle);
853 dissector_add("ip.proto", IP_PROTO_IPV6, ipv6_handle);
854 dissector_add("null.type", BSD_AF_INET6_BSD, ipv6_handle);
855 dissector_add("null.type", BSD_AF_INET6_FREEBSD, ipv6_handle);
856 dissector_add("null.type", BSD_AF_INET6_DARWIN, ipv6_handle);
857 dissector_add("chdlctype", ETHERTYPE_IPv6, ipv6_handle);
858 dissector_add("fr.ietf", NLPID_IP6, ipv6_handle);
859 dissector_add("x.25.spi", NLPID_IP6, ipv6_handle);
860 dissector_add("arcnet.protocol_id", ARCNET_PROTO_IPv6, ipv6_handle);