2 * Copyright (c) 1992, 1993, 1994, 1995, 1996
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.
21 * Original code by Matt Thomas, Digital Equipment Corporation
23 * Extensively modified by Hannes Gredler (hannes@juniper.net) for more
24 * complete IS-IS & CLNP support.
29 #define NETDISSECT_REWORKED
34 #include <tcpdump-stdinc.h>
38 #include "interface.h"
39 #include "addrtoname.h"
45 #include "signature.h"
48 * IS-IS is defined in ISO 10589. Look there for protocol definitions.
51 #define SYSTEM_ID_LEN ETHER_ADDR_LEN
52 #define NODE_ID_LEN SYSTEM_ID_LEN+1
53 #define LSP_ID_LEN SYSTEM_ID_LEN+2
55 #define ISIS_VERSION 1
56 #define ESIS_VERSION 1
57 #define CLNP_VERSION 1
59 #define ISIS_PDU_TYPE_MASK 0x1F
60 #define ESIS_PDU_TYPE_MASK 0x1F
61 #define CLNP_PDU_TYPE_MASK 0x1F
62 #define CLNP_FLAG_MASK 0xE0
63 #define ISIS_LAN_PRIORITY_MASK 0x7F
65 #define ISIS_PDU_L1_LAN_IIH 15
66 #define ISIS_PDU_L2_LAN_IIH 16
67 #define ISIS_PDU_PTP_IIH 17
68 #define ISIS_PDU_L1_LSP 18
69 #define ISIS_PDU_L2_LSP 20
70 #define ISIS_PDU_L1_CSNP 24
71 #define ISIS_PDU_L2_CSNP 25
72 #define ISIS_PDU_L1_PSNP 26
73 #define ISIS_PDU_L2_PSNP 27
75 static const struct tok isis_pdu_values[] = {
76 { ISIS_PDU_L1_LAN_IIH, "L1 Lan IIH"},
77 { ISIS_PDU_L2_LAN_IIH, "L2 Lan IIH"},
78 { ISIS_PDU_PTP_IIH, "p2p IIH"},
79 { ISIS_PDU_L1_LSP, "L1 LSP"},
80 { ISIS_PDU_L2_LSP, "L2 LSP"},
81 { ISIS_PDU_L1_CSNP, "L1 CSNP"},
82 { ISIS_PDU_L2_CSNP, "L2 CSNP"},
83 { ISIS_PDU_L1_PSNP, "L1 PSNP"},
84 { ISIS_PDU_L2_PSNP, "L2 PSNP"},
89 * A TLV is a tuple of a type, length and a value and is normally used for
90 * encoding information in all sorts of places. This is an enumeration of
91 * the well known types.
93 * list taken from rfc3359 plus some memory from veterans ;-)
96 #define ISIS_TLV_AREA_ADDR 1 /* iso10589 */
97 #define ISIS_TLV_IS_REACH 2 /* iso10589 */
98 #define ISIS_TLV_ESNEIGH 3 /* iso10589 */
99 #define ISIS_TLV_PART_DIS 4 /* iso10589 */
100 #define ISIS_TLV_PREFIX_NEIGH 5 /* iso10589 */
101 #define ISIS_TLV_ISNEIGH 6 /* iso10589 */
102 #define ISIS_TLV_ISNEIGH_VARLEN 7 /* iso10589 */
103 #define ISIS_TLV_PADDING 8 /* iso10589 */
104 #define ISIS_TLV_LSP 9 /* iso10589 */
105 #define ISIS_TLV_AUTH 10 /* iso10589, rfc3567 */
106 #define ISIS_TLV_CHECKSUM 12 /* rfc3358 */
107 #define ISIS_TLV_CHECKSUM_MINLEN 2
108 #define ISIS_TLV_LSP_BUFFERSIZE 14 /* iso10589 rev2 */
109 #define ISIS_TLV_LSP_BUFFERSIZE_MINLEN 2
110 #define ISIS_TLV_EXT_IS_REACH 22 /* draft-ietf-isis-traffic-05 */
111 #define ISIS_TLV_IS_ALIAS_ID 24 /* draft-ietf-isis-ext-lsp-frags-02 */
112 #define ISIS_TLV_DECNET_PHASE4 42
113 #define ISIS_TLV_LUCENT_PRIVATE 66
114 #define ISIS_TLV_INT_IP_REACH 128 /* rfc1195, rfc2966 */
115 #define ISIS_TLV_PROTOCOLS 129 /* rfc1195 */
116 #define ISIS_TLV_EXT_IP_REACH 130 /* rfc1195, rfc2966 */
117 #define ISIS_TLV_IDRP_INFO 131 /* rfc1195 */
118 #define ISIS_TLV_IDRP_INFO_MINLEN 1
119 #define ISIS_TLV_IPADDR 132 /* rfc1195 */
120 #define ISIS_TLV_IPAUTH 133 /* rfc1195 */
121 #define ISIS_TLV_TE_ROUTER_ID 134 /* draft-ietf-isis-traffic-05 */
122 #define ISIS_TLV_EXTD_IP_REACH 135 /* draft-ietf-isis-traffic-05 */
123 #define ISIS_TLV_HOSTNAME 137 /* rfc2763 */
124 #define ISIS_TLV_SHARED_RISK_GROUP 138 /* draft-ietf-isis-gmpls-extensions */
125 #define ISIS_TLV_MT_PORT_CAP 143 /* rfc6165 */
126 #define ISIS_TLV_MT_CAPABILITY 144 /* rfc6329 */
127 #define ISIS_TLV_NORTEL_PRIVATE1 176
128 #define ISIS_TLV_NORTEL_PRIVATE2 177
129 #define ISIS_TLV_RESTART_SIGNALING 211 /* rfc3847 */
130 #define ISIS_TLV_RESTART_SIGNALING_FLAGLEN 1
131 #define ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN 2
132 #define ISIS_TLV_MT_IS_REACH 222 /* draft-ietf-isis-wg-multi-topology-05 */
133 #define ISIS_TLV_MT_SUPPORTED 229 /* draft-ietf-isis-wg-multi-topology-05 */
134 #define ISIS_TLV_MT_SUPPORTED_MINLEN 2
135 #define ISIS_TLV_IP6ADDR 232 /* draft-ietf-isis-ipv6-02 */
136 #define ISIS_TLV_MT_IP_REACH 235 /* draft-ietf-isis-wg-multi-topology-05 */
137 #define ISIS_TLV_IP6_REACH 236 /* draft-ietf-isis-ipv6-02 */
138 #define ISIS_TLV_MT_IP6_REACH 237 /* draft-ietf-isis-wg-multi-topology-05 */
139 #define ISIS_TLV_PTP_ADJ 240 /* rfc3373 */
140 #define ISIS_TLV_IIH_SEQNR 241 /* draft-shen-isis-iih-sequence-00 */
141 #define ISIS_TLV_IIH_SEQNR_MINLEN 4
142 #define ISIS_TLV_VENDOR_PRIVATE 250 /* draft-ietf-isis-experimental-tlv-01 */
143 #define ISIS_TLV_VENDOR_PRIVATE_MINLEN 3
145 static const struct tok isis_tlv_values[] = {
146 { ISIS_TLV_AREA_ADDR, "Area address(es)"},
147 { ISIS_TLV_IS_REACH, "IS Reachability"},
148 { ISIS_TLV_ESNEIGH, "ES Neighbor(s)"},
149 { ISIS_TLV_PART_DIS, "Partition DIS"},
150 { ISIS_TLV_PREFIX_NEIGH, "Prefix Neighbors"},
151 { ISIS_TLV_ISNEIGH, "IS Neighbor(s)"},
152 { ISIS_TLV_ISNEIGH_VARLEN, "IS Neighbor(s) (variable length)"},
153 { ISIS_TLV_PADDING, "Padding"},
154 { ISIS_TLV_LSP, "LSP entries"},
155 { ISIS_TLV_AUTH, "Authentication"},
156 { ISIS_TLV_CHECKSUM, "Checksum"},
157 { ISIS_TLV_LSP_BUFFERSIZE, "LSP Buffersize"},
158 { ISIS_TLV_EXT_IS_REACH, "Extended IS Reachability"},
159 { ISIS_TLV_IS_ALIAS_ID, "IS Alias ID"},
160 { ISIS_TLV_DECNET_PHASE4, "DECnet Phase IV"},
161 { ISIS_TLV_LUCENT_PRIVATE, "Lucent Proprietary"},
162 { ISIS_TLV_INT_IP_REACH, "IPv4 Internal Reachability"},
163 { ISIS_TLV_PROTOCOLS, "Protocols supported"},
164 { ISIS_TLV_EXT_IP_REACH, "IPv4 External Reachability"},
165 { ISIS_TLV_IDRP_INFO, "Inter-Domain Information Type"},
166 { ISIS_TLV_IPADDR, "IPv4 Interface address(es)"},
167 { ISIS_TLV_IPAUTH, "IPv4 authentication (deprecated)"},
168 { ISIS_TLV_TE_ROUTER_ID, "Traffic Engineering Router ID"},
169 { ISIS_TLV_EXTD_IP_REACH, "Extended IPv4 Reachability"},
170 { ISIS_TLV_SHARED_RISK_GROUP, "Shared Risk Link Group"},
171 { ISIS_TLV_MT_PORT_CAP, "Multi-Topology-Aware Port Capability"},
172 { ISIS_TLV_MT_CAPABILITY, "Multi-Topology Capability"},
173 { ISIS_TLV_NORTEL_PRIVATE1, "Nortel Proprietary"},
174 { ISIS_TLV_NORTEL_PRIVATE2, "Nortel Proprietary"},
175 { ISIS_TLV_HOSTNAME, "Hostname"},
176 { ISIS_TLV_RESTART_SIGNALING, "Restart Signaling"},
177 { ISIS_TLV_MT_IS_REACH, "Multi Topology IS Reachability"},
178 { ISIS_TLV_MT_SUPPORTED, "Multi Topology"},
179 { ISIS_TLV_IP6ADDR, "IPv6 Interface address(es)"},
180 { ISIS_TLV_MT_IP_REACH, "Multi-Topology IPv4 Reachability"},
181 { ISIS_TLV_IP6_REACH, "IPv6 reachability"},
182 { ISIS_TLV_MT_IP6_REACH, "Multi-Topology IP6 Reachability"},
183 { ISIS_TLV_PTP_ADJ, "Point-to-point Adjacency State"},
184 { ISIS_TLV_IIH_SEQNR, "Hello PDU Sequence Number"},
185 { ISIS_TLV_VENDOR_PRIVATE, "Vendor Private"},
189 #define ESIS_OPTION_PROTOCOLS 129
190 #define ESIS_OPTION_QOS_MAINTENANCE 195 /* iso9542 */
191 #define ESIS_OPTION_SECURITY 197 /* iso9542 */
192 #define ESIS_OPTION_ES_CONF_TIME 198 /* iso9542 */
193 #define ESIS_OPTION_PRIORITY 205 /* iso9542 */
194 #define ESIS_OPTION_ADDRESS_MASK 225 /* iso9542 */
195 #define ESIS_OPTION_SNPA_MASK 226 /* iso9542 */
197 static const struct tok esis_option_values[] = {
198 { ESIS_OPTION_PROTOCOLS, "Protocols supported"},
199 { ESIS_OPTION_QOS_MAINTENANCE, "QoS Maintenance" },
200 { ESIS_OPTION_SECURITY, "Security" },
201 { ESIS_OPTION_ES_CONF_TIME, "ES Configuration Time" },
202 { ESIS_OPTION_PRIORITY, "Priority" },
203 { ESIS_OPTION_ADDRESS_MASK, "Addressk Mask" },
204 { ESIS_OPTION_SNPA_MASK, "SNPA Mask" },
208 #define CLNP_OPTION_DISCARD_REASON 193
209 #define CLNP_OPTION_QOS_MAINTENANCE 195 /* iso8473 */
210 #define CLNP_OPTION_SECURITY 197 /* iso8473 */
211 #define CLNP_OPTION_SOURCE_ROUTING 200 /* iso8473 */
212 #define CLNP_OPTION_ROUTE_RECORDING 203 /* iso8473 */
213 #define CLNP_OPTION_PADDING 204 /* iso8473 */
214 #define CLNP_OPTION_PRIORITY 205 /* iso8473 */
216 static const struct tok clnp_option_values[] = {
217 { CLNP_OPTION_DISCARD_REASON, "Discard Reason"},
218 { CLNP_OPTION_PRIORITY, "Priority"},
219 { CLNP_OPTION_QOS_MAINTENANCE, "QoS Maintenance"},
220 { CLNP_OPTION_SECURITY, "Security"},
221 { CLNP_OPTION_SOURCE_ROUTING, "Source Routing"},
222 { CLNP_OPTION_ROUTE_RECORDING, "Route Recording"},
223 { CLNP_OPTION_PADDING, "Padding"},
227 static const struct tok clnp_option_rfd_class_values[] = {
230 { 0x9, "Source Routeing"},
232 { 0xb, "PDU Discarded"},
233 { 0xc, "Reassembly"},
237 static const struct tok clnp_option_rfd_general_values[] = {
238 { 0x0, "Reason not specified"},
239 { 0x1, "Protocol procedure error"},
240 { 0x2, "Incorrect checksum"},
241 { 0x3, "PDU discarded due to congestion"},
242 { 0x4, "Header syntax error (cannot be parsed)"},
243 { 0x5, "Segmentation needed but not permitted"},
244 { 0x6, "Incomplete PDU received"},
245 { 0x7, "Duplicate option"},
249 static const struct tok clnp_option_rfd_address_values[] = {
250 { 0x0, "Destination address unreachable"},
251 { 0x1, "Destination address unknown"},
255 static const struct tok clnp_option_rfd_source_routeing_values[] = {
256 { 0x0, "Unspecified source routeing error"},
257 { 0x1, "Syntax error in source routeing field"},
258 { 0x2, "Unknown address in source routeing field"},
259 { 0x3, "Path not acceptable"},
263 static const struct tok clnp_option_rfd_lifetime_values[] = {
264 { 0x0, "Lifetime expired while data unit in transit"},
265 { 0x1, "Lifetime expired during reassembly"},
269 static const struct tok clnp_option_rfd_pdu_discard_values[] = {
270 { 0x0, "Unsupported option not specified"},
271 { 0x1, "Unsupported protocol version"},
272 { 0x2, "Unsupported security option"},
273 { 0x3, "Unsupported source routeing option"},
274 { 0x4, "Unsupported recording of route option"},
278 static const struct tok clnp_option_rfd_reassembly_values[] = {
279 { 0x0, "Reassembly interference"},
283 /* array of 16 error-classes */
284 static const struct tok *clnp_option_rfd_error_class[] = {
285 clnp_option_rfd_general_values,
293 clnp_option_rfd_address_values,
294 clnp_option_rfd_source_routeing_values,
295 clnp_option_rfd_lifetime_values,
296 clnp_option_rfd_pdu_discard_values,
297 clnp_option_rfd_reassembly_values,
303 #define CLNP_OPTION_OPTION_QOS_MASK 0x3f
304 #define CLNP_OPTION_SCOPE_MASK 0xc0
305 #define CLNP_OPTION_SCOPE_SA_SPEC 0x40
306 #define CLNP_OPTION_SCOPE_DA_SPEC 0x80
307 #define CLNP_OPTION_SCOPE_GLOBAL 0xc0
309 static const struct tok clnp_option_scope_values[] = {
310 { CLNP_OPTION_SCOPE_SA_SPEC, "Source Address Specific"},
311 { CLNP_OPTION_SCOPE_DA_SPEC, "Destination Address Specific"},
312 { CLNP_OPTION_SCOPE_GLOBAL, "Globally unique"},
316 static const struct tok clnp_option_sr_rr_values[] = {
322 static const struct tok clnp_option_sr_rr_string_values[] = {
323 { CLNP_OPTION_SOURCE_ROUTING, "source routing"},
324 { CLNP_OPTION_ROUTE_RECORDING, "recording of route in progress"},
328 static const struct tok clnp_option_qos_global_values[] = {
330 { 0x10, "sequencing vs. delay"},
331 { 0x08, "congested"},
332 { 0x04, "delay vs. cost"},
333 { 0x02, "error vs. delay"},
334 { 0x01, "error vs. cost"},
338 #define ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP 3 /* draft-ietf-isis-traffic-05 */
339 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID 4 /* rfc4205 */
340 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID 5 /* draft-ietf-isis-traffic-05 */
341 #define ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR 6 /* draft-ietf-isis-traffic-05 */
342 #define ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR 8 /* draft-ietf-isis-traffic-05 */
343 #define ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW 9 /* draft-ietf-isis-traffic-05 */
344 #define ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW 10 /* draft-ietf-isis-traffic-05 */
345 #define ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW 11 /* rfc4124 */
346 #define ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD 12 /* draft-ietf-tewg-diff-te-proto-06 */
347 #define ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC 18 /* draft-ietf-isis-traffic-05 */
348 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE 19 /* draft-ietf-isis-link-attr-01 */
349 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE 20 /* rfc4205 */
350 #define ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR 21 /* rfc4205 */
351 #define ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS 22 /* rfc4124 */
353 #define ISIS_SUBTLV_SPB_METRIC 29 /* rfc6329 */
355 static const struct tok isis_ext_is_reach_subtlv_values[] = {
356 { ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP, "Administrative groups" },
357 { ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
358 { ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID, "Link Remote Identifier" },
359 { ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR, "IPv4 interface address" },
360 { ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR, "IPv4 neighbor address" },
361 { ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW, "Maximum link bandwidth" },
362 { ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW, "Reservable link bandwidth" },
363 { ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW, "Unreserved bandwidth" },
364 { ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC, "Traffic Engineering Metric" },
365 { ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE, "Link Attribute" },
366 { ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE, "Link Protection Type" },
367 { ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
368 { ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD, "Bandwidth Constraints (old)" },
369 { ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS, "Bandwidth Constraints" },
370 { ISIS_SUBTLV_SPB_METRIC, "SPB Metric" },
371 { 250, "Reserved for cisco specific extensions" },
372 { 251, "Reserved for cisco specific extensions" },
373 { 252, "Reserved for cisco specific extensions" },
374 { 253, "Reserved for cisco specific extensions" },
375 { 254, "Reserved for cisco specific extensions" },
376 { 255, "Reserved for future expansion" },
380 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32 1 /* draft-ietf-isis-admin-tags-01 */
381 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64 2 /* draft-ietf-isis-admin-tags-01 */
382 #define ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR 117 /* draft-ietf-isis-wg-multi-topology-05 */
384 static const struct tok isis_ext_ip_reach_subtlv_values[] = {
385 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32, "32-Bit Administrative tag" },
386 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64, "64-Bit Administrative tag" },
387 { ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR, "Management Prefix Color" },
391 static const struct tok isis_subtlv_link_attribute_values[] = {
392 { 0x01, "Local Protection Available" },
393 { 0x02, "Link excluded from local protection path" },
394 { 0x04, "Local maintenance required"},
398 #define ISIS_SUBTLV_AUTH_SIMPLE 1
399 #define ISIS_SUBTLV_AUTH_GENERIC 3 /* rfc 5310 */
400 #define ISIS_SUBTLV_AUTH_MD5 54
401 #define ISIS_SUBTLV_AUTH_MD5_LEN 16
402 #define ISIS_SUBTLV_AUTH_PRIVATE 255
404 static const struct tok isis_subtlv_auth_values[] = {
405 { ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
406 { ISIS_SUBTLV_AUTH_GENERIC, "Generic Crypto key-id"},
407 { ISIS_SUBTLV_AUTH_MD5, "HMAC-MD5 password"},
408 { ISIS_SUBTLV_AUTH_PRIVATE, "Routing Domain private password"},
412 #define ISIS_SUBTLV_IDRP_RES 0
413 #define ISIS_SUBTLV_IDRP_LOCAL 1
414 #define ISIS_SUBTLV_IDRP_ASN 2
416 static const struct tok isis_subtlv_idrp_values[] = {
417 { ISIS_SUBTLV_IDRP_RES, "Reserved"},
418 { ISIS_SUBTLV_IDRP_LOCAL, "Routing-Domain Specific"},
419 { ISIS_SUBTLV_IDRP_ASN, "AS Number Tag"},
423 #define ISIS_SUBTLV_SPB_MCID 4
424 #define ISIS_SUBTLV_SPB_DIGEST 5
425 #define ISIS_SUBTLV_SPB_BVID 6
427 #define ISIS_SUBTLV_SPB_INSTANCE 1
428 #define ISIS_SUBTLV_SPBM_SI 3
430 #define ISIS_SPB_MCID_LEN 51
431 #define ISIS_SUBTLV_SPB_MCID_MIN_LEN 102
432 #define ISIS_SUBTLV_SPB_DIGEST_MIN_LEN 33
433 #define ISIS_SUBTLV_SPB_BVID_MIN_LEN 6
434 #define ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN 19
435 #define ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN 8
437 static const struct tok isis_mt_port_cap_subtlv_values[] = {
438 { ISIS_SUBTLV_SPB_MCID, "SPB MCID" },
439 { ISIS_SUBTLV_SPB_DIGEST, "SPB Digest" },
440 { ISIS_SUBTLV_SPB_BVID, "SPB BVID" },
444 static const struct tok isis_mt_capability_subtlv_values[] = {
445 { ISIS_SUBTLV_SPB_INSTANCE, "SPB Instance" },
446 { ISIS_SUBTLV_SPBM_SI, "SPBM Service Identifier and Unicast Address" },
450 struct isis_spb_mcid {
453 uint8_t revision_lvl[2];
457 struct isis_subtlv_spb_mcid {
458 struct isis_spb_mcid mcid;
459 struct isis_spb_mcid aux_mcid;
462 struct isis_subtlv_spb_instance {
463 uint8_t cist_root_id[8];
464 uint8_t cist_external_root_path_cost[4];
465 uint8_t bridge_priority[2];
466 uint8_t spsourceid[4];
470 #define CLNP_SEGMENT_PART 0x80
471 #define CLNP_MORE_SEGMENTS 0x40
472 #define CLNP_REQUEST_ER 0x20
474 static const struct tok clnp_flag_values[] = {
475 { CLNP_SEGMENT_PART, "Segmentation permitted"},
476 { CLNP_MORE_SEGMENTS, "more Segments"},
477 { CLNP_REQUEST_ER, "request Error Report"},
481 #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
482 #define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3)
483 #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
484 #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
485 #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
486 #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
487 #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
488 #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
490 #define ISIS_MASK_MTID(x) ((x)&0x0fff)
491 #define ISIS_MASK_MTFLAGS(x) ((x)&0xf000)
493 static const struct tok isis_mt_flag_values[] = {
494 { 0x4000, "ATT bit set"},
495 { 0x8000, "Overload bit set"},
499 #define ISIS_MASK_TLV_EXTD_IP_UPDOWN(x) ((x)&0x80)
500 #define ISIS_MASK_TLV_EXTD_IP_SUBTLV(x) ((x)&0x40)
502 #define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40)
503 #define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20)
505 #define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80)
506 #define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40)
507 #define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80)
508 #define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f)
510 #define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1)
512 static const struct tok isis_mt_values[] = {
513 { 0, "IPv4 unicast"},
514 { 1, "In-Band Management"},
515 { 2, "IPv6 unicast"},
517 { 4095, "Development, Experimental or Proprietary"},
521 static const struct tok isis_iih_circuit_type_values[] = {
522 { 1, "Level 1 only"},
523 { 2, "Level 2 only"},
524 { 3, "Level 1, Level 2"},
528 #define ISIS_LSP_TYPE_UNUSED0 0
529 #define ISIS_LSP_TYPE_LEVEL_1 1
530 #define ISIS_LSP_TYPE_UNUSED2 2
531 #define ISIS_LSP_TYPE_LEVEL_2 3
533 static const struct tok isis_lsp_istype_values[] = {
534 { ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
535 { ISIS_LSP_TYPE_LEVEL_1, "L1 IS"},
536 { ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
537 { ISIS_LSP_TYPE_LEVEL_2, "L2 IS"},
542 * Katz's point to point adjacency TLV uses codes to tell us the state of
543 * the remote adjacency. Enumerate them.
546 #define ISIS_PTP_ADJ_UP 0
547 #define ISIS_PTP_ADJ_INIT 1
548 #define ISIS_PTP_ADJ_DOWN 2
550 static const struct tok isis_ptp_adjancey_values[] = {
551 { ISIS_PTP_ADJ_UP, "Up" },
552 { ISIS_PTP_ADJ_INIT, "Initializing" },
553 { ISIS_PTP_ADJ_DOWN, "Down" },
557 struct isis_tlv_ptp_adj {
558 uint8_t adjacency_state;
559 uint8_t extd_local_circuit_id[4];
560 uint8_t neighbor_sysid[SYSTEM_ID_LEN];
561 uint8_t neighbor_extd_local_circuit_id[4];
564 static void osi_print_cksum(netdissect_options *, const uint8_t *pptr, uint16_t checksum,
565 u_int checksum_offset, u_int length);
566 static int clnp_print(netdissect_options *, const uint8_t *, u_int);
567 static void esis_print(netdissect_options *, const uint8_t *, u_int);
568 static int isis_print(netdissect_options *, const uint8_t *, u_int);
570 struct isis_metric_block {
571 uint8_t metric_default;
572 uint8_t metric_delay;
573 uint8_t metric_expense;
574 uint8_t metric_error;
577 struct isis_tlv_is_reach {
578 struct isis_metric_block isis_metric_block;
579 uint8_t neighbor_nodeid[NODE_ID_LEN];
582 struct isis_tlv_es_reach {
583 struct isis_metric_block isis_metric_block;
584 uint8_t neighbor_sysid[SYSTEM_ID_LEN];
587 struct isis_tlv_ip_reach {
588 struct isis_metric_block isis_metric_block;
593 static const struct tok isis_is_reach_virtual_values[] = {
594 { 0, "IsNotVirtual"},
599 static const struct tok isis_restart_flag_values[] = {
600 { 0x1, "Restart Request"},
601 { 0x2, "Restart Acknowledgement"},
602 { 0x4, "Suppress adjacency advertisement"},
606 struct isis_common_header {
609 uint8_t version; /* Protocol version */
611 uint8_t pdu_type; /* 3 MSbits are reserved */
612 uint8_t pdu_version; /* Packet format version */
617 struct isis_iih_lan_header {
618 uint8_t circuit_type;
619 uint8_t source_id[SYSTEM_ID_LEN];
620 uint8_t holding_time[2];
623 uint8_t lan_id[NODE_ID_LEN];
626 struct isis_iih_ptp_header {
627 uint8_t circuit_type;
628 uint8_t source_id[SYSTEM_ID_LEN];
629 uint8_t holding_time[2];
634 struct isis_lsp_header {
636 uint8_t remaining_lifetime[2];
637 uint8_t lsp_id[LSP_ID_LEN];
638 uint8_t sequence_number[4];
643 struct isis_csnp_header {
645 uint8_t source_id[NODE_ID_LEN];
646 uint8_t start_lsp_id[LSP_ID_LEN];
647 uint8_t end_lsp_id[LSP_ID_LEN];
650 struct isis_psnp_header {
652 uint8_t source_id[NODE_ID_LEN];
655 struct isis_tlv_lsp {
656 uint8_t remaining_lifetime[2];
657 uint8_t lsp_id[LSP_ID_LEN];
658 uint8_t sequence_number[4];
662 #define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
663 #define ISIS_IIH_LAN_HEADER_SIZE (sizeof(struct isis_iih_lan_header))
664 #define ISIS_IIH_PTP_HEADER_SIZE (sizeof(struct isis_iih_ptp_header))
665 #define ISIS_LSP_HEADER_SIZE (sizeof(struct isis_lsp_header))
666 #define ISIS_CSNP_HEADER_SIZE (sizeof(struct isis_csnp_header))
667 #define ISIS_PSNP_HEADER_SIZE (sizeof(struct isis_psnp_header))
669 void isoclns_print(netdissect_options *ndo,
670 const uint8_t *p, u_int length, u_int caplen)
672 if (caplen <= 1) { /* enough bytes on the wire ? */
673 ND_PRINT((ndo, "|OSI"));
678 ND_PRINT((ndo, "OSI NLPID %s (0x%02x): ", tok2str(nlpid_values, "Unknown", *p), *p));
683 if (!clnp_print(ndo, p, length))
684 print_unknown_data(ndo, p, "\n\t", caplen);
688 esis_print(ndo, p, length);
692 if (!isis_print(ndo, p, length))
693 print_unknown_data(ndo, p, "\n\t", caplen);
697 ND_PRINT((ndo, "%slength: %u", ndo->ndo_eflag ? "" : ", ", length));
701 q933_print(ndo, p + 1, length - 1);
705 ip_print(ndo, p + 1, length - 1);
710 ip6_print(ndo, p + 1, length - 1);
715 ppp_print(ndo, p + 1, length - 1);
720 ND_PRINT((ndo, "OSI NLPID 0x%02x unknown", *p));
721 ND_PRINT((ndo, "%slength: %u", ndo->ndo_eflag ? "" : ", ", length));
723 print_unknown_data(ndo, p, "\n\t", caplen);
728 #define CLNP_PDU_ER 1
729 #define CLNP_PDU_DT 28
730 #define CLNP_PDU_MD 29
731 #define CLNP_PDU_ERQ 30
732 #define CLNP_PDU_ERP 31
734 static const struct tok clnp_pdu_values[] = {
735 { CLNP_PDU_ER, "Error Report"},
736 { CLNP_PDU_MD, "MD"},
737 { CLNP_PDU_DT, "Data"},
738 { CLNP_PDU_ERQ, "Echo Request"},
739 { CLNP_PDU_ERP, "Echo Response"},
743 struct clnp_header_t {
745 uint8_t length_indicator;
747 uint8_t lifetime; /* units of 500ms */
749 uint8_t segment_length[2];
753 struct clnp_segment_header_t {
754 uint8_t data_unit_id[2];
755 uint8_t segment_offset[2];
756 uint8_t total_length[2];
761 * Decode CLNP packets. Return 0 on error.
765 clnp_print(netdissect_options *ndo,
766 const uint8_t *pptr, u_int length)
768 const uint8_t *optr,*source_address,*dest_address;
769 u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags;
770 const struct clnp_header_t *clnp_header;
771 const struct clnp_segment_header_t *clnp_segment_header;
772 uint8_t rfd_error_major,rfd_error_minor;
774 clnp_header = (const struct clnp_header_t *) pptr;
775 ND_TCHECK(*clnp_header);
777 li = clnp_header->length_indicator;
781 ND_PRINT((ndo, "CLNP"));
784 * Sanity checking of the header.
787 if (clnp_header->version != CLNP_VERSION) {
788 ND_PRINT((ndo, "version %d packet not supported", clnp_header->version));
792 /* FIXME further header sanity checking */
794 clnp_pdu_type = clnp_header->type & CLNP_PDU_TYPE_MASK;
795 clnp_flags = clnp_header->type & CLNP_FLAG_MASK;
797 pptr += sizeof(struct clnp_header_t);
798 li -= sizeof(struct clnp_header_t);
799 dest_address_length = *pptr;
800 dest_address = pptr + 1;
802 pptr += (1 + dest_address_length);
803 li -= (1 + dest_address_length);
804 source_address_length = *pptr;
805 source_address = pptr +1;
807 pptr += (1 + source_address_length);
808 li -= (1 + source_address_length);
810 if (ndo->ndo_vflag < 1) {
811 ND_PRINT((ndo, "%s%s > %s, %s, length %u",
812 ndo->ndo_eflag ? "" : ", ",
813 isonsap_string(source_address, source_address_length),
814 isonsap_string(dest_address, dest_address_length),
815 tok2str(clnp_pdu_values,"unknown (%u)",clnp_pdu_type),
819 ND_PRINT((ndo, "%slength %u", ndo->ndo_eflag ? "" : ", ", length));
821 ND_PRINT((ndo, "\n\t%s PDU, hlen: %u, v: %u, lifetime: %u.%us, Segment PDU length: %u, checksum: 0x%04x",
822 tok2str(clnp_pdu_values, "unknown (%u)",clnp_pdu_type),
823 clnp_header->length_indicator,
824 clnp_header->version,
825 clnp_header->lifetime/2,
826 (clnp_header->lifetime%2)*5,
827 EXTRACT_16BITS(clnp_header->segment_length),
828 EXTRACT_16BITS(clnp_header->cksum)));
830 osi_print_cksum(ndo, optr, EXTRACT_16BITS(clnp_header->cksum), 7,
831 clnp_header->length_indicator);
833 ND_PRINT((ndo, "\n\tFlags [%s]",
834 bittok2str(clnp_flag_values, "none", clnp_flags)));
836 ND_PRINT((ndo, "\n\tsource address (length %u): %s\n\tdest address (length %u): %s",
837 source_address_length,
838 isonsap_string(source_address, source_address_length),
840 isonsap_string(dest_address, dest_address_length)));
842 if (clnp_flags & CLNP_SEGMENT_PART) {
843 clnp_segment_header = (const struct clnp_segment_header_t *) pptr;
844 ND_TCHECK(*clnp_segment_header);
845 ND_PRINT((ndo, "\n\tData Unit ID: 0x%04x, Segment Offset: %u, Total PDU Length: %u",
846 EXTRACT_16BITS(clnp_segment_header->data_unit_id),
847 EXTRACT_16BITS(clnp_segment_header->segment_offset),
848 EXTRACT_16BITS(clnp_segment_header->total_length)));
849 pptr+=sizeof(const struct clnp_segment_header_t);
850 li-=sizeof(const struct clnp_segment_header_t);
853 /* now walk the options */
858 ND_TCHECK2(*pptr, 2);
860 ND_PRINT((ndo, ", bad opts/li"));
866 ND_TCHECK2(*pptr, opli);
868 ND_PRINT((ndo, ", opt (%d) too long", op));
875 ND_PRINT((ndo, "\n\t %s Option #%u, length %u, value: ",
876 tok2str(clnp_option_values,"Unknown",op),
883 case CLNP_OPTION_ROUTE_RECORDING: /* those two options share the format */
884 case CLNP_OPTION_SOURCE_ROUTING:
885 ND_PRINT((ndo, "%s %s",
886 tok2str(clnp_option_sr_rr_values,"Unknown",*tptr),
887 tok2str(clnp_option_sr_rr_string_values, "Unknown Option %u", op)));
888 nsap_offset=*(tptr+1);
889 if (nsap_offset == 0) {
890 ND_PRINT((ndo, " Bad NSAP offset (0)"));
893 nsap_offset-=1; /* offset to nsap list */
894 if (nsap_offset > tlen) {
895 ND_PRINT((ndo, " Bad NSAP offset (past end of option)"));
901 source_address_length=*tptr;
902 if (tlen < source_address_length+1) {
903 ND_PRINT((ndo, "\n\t NSAP address goes past end of option"));
906 if (source_address_length > 0) {
907 source_address=(tptr+1);
908 ND_TCHECK2(*source_address, source_address_length);
909 ND_PRINT((ndo, "\n\t NSAP address (length %u): %s",
910 source_address_length,
911 isonsap_string(source_address, source_address_length)));
913 tlen-=source_address_length+1;
917 case CLNP_OPTION_PRIORITY:
918 ND_PRINT((ndo, "0x%1x", *tptr&0x0f));
921 case CLNP_OPTION_QOS_MAINTENANCE:
922 ND_PRINT((ndo, "\n\t Format Code: %s",
923 tok2str(clnp_option_scope_values, "Reserved", *tptr&CLNP_OPTION_SCOPE_MASK)));
925 if ((*tptr&CLNP_OPTION_SCOPE_MASK) == CLNP_OPTION_SCOPE_GLOBAL)
926 ND_PRINT((ndo, "\n\t QoS Flags [%s]",
927 bittok2str(clnp_option_qos_global_values,
929 *tptr&CLNP_OPTION_OPTION_QOS_MASK)));
932 case CLNP_OPTION_SECURITY:
933 ND_PRINT((ndo, "\n\t Format Code: %s, Security-Level %u",
934 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK),
938 case CLNP_OPTION_DISCARD_REASON:
939 rfd_error_major = (*tptr&0xf0) >> 4;
940 rfd_error_minor = *tptr&0x0f;
941 ND_PRINT((ndo, "\n\t Class: %s Error (0x%01x), %s (0x%01x)",
942 tok2str(clnp_option_rfd_class_values,"Unknown",rfd_error_major),
944 tok2str(clnp_option_rfd_error_class[rfd_error_major],"Unknown",rfd_error_minor),
948 case CLNP_OPTION_PADDING:
949 ND_PRINT((ndo, "padding data"));
953 * FIXME those are the defined Options that lack a decoder
954 * you are welcome to contribute code ;-)
958 print_unknown_data(ndo, tptr, "\n\t ", opli);
961 if (ndo->ndo_vflag > 1)
962 print_unknown_data(ndo, pptr, "\n\t ", opli);
966 switch (clnp_pdu_type) {
968 case CLNP_PDU_ER: /* fall through */
971 if (*(pptr) == NLPID_CLNP) {
972 ND_PRINT((ndo, "\n\t-----original packet-----\n\t"));
973 /* FIXME recursion protection */
974 clnp_print(ndo, pptr, length - clnp_header->length_indicator);
983 /* dump the PDU specific data */
984 if (length-(pptr-optr) > 0) {
985 ND_PRINT((ndo, "\n\t undecoded non-header data, length %u", length-clnp_header->length_indicator));
986 print_unknown_data(ndo, pptr, "\n\t ", length - (pptr - optr));
993 ND_PRINT((ndo, "[|clnp]"));
999 #define ESIS_PDU_REDIRECT 6
1000 #define ESIS_PDU_ESH 2
1001 #define ESIS_PDU_ISH 4
1003 static const struct tok esis_pdu_values[] = {
1004 { ESIS_PDU_REDIRECT, "redirect"},
1005 { ESIS_PDU_ESH, "ESH"},
1006 { ESIS_PDU_ISH, "ISH"},
1010 struct esis_header_t {
1012 uint8_t length_indicator;
1016 uint8_t holdtime[2];
1021 esis_print(netdissect_options *ndo,
1022 const uint8_t *pptr, u_int length)
1024 const uint8_t *optr;
1025 u_int li,esis_pdu_type,source_address_length, source_address_number;
1026 const struct esis_header_t *esis_header;
1028 if (!ndo->ndo_eflag)
1029 ND_PRINT((ndo, "ES-IS"));
1032 ND_PRINT((ndo, ndo->ndo_qflag ? "bad pkt!" : "no header at all!"));
1036 esis_header = (const struct esis_header_t *) pptr;
1037 ND_TCHECK(*esis_header);
1038 li = esis_header->length_indicator;
1042 * Sanity checking of the header.
1045 if (esis_header->nlpid != NLPID_ESIS) {
1046 ND_PRINT((ndo, " nlpid 0x%02x packet not supported", esis_header->nlpid));
1050 if (esis_header->version != ESIS_VERSION) {
1051 ND_PRINT((ndo, " version %d packet not supported", esis_header->version));
1056 ND_PRINT((ndo, " length indicator(%d) > PDU size (%d)!", li, length));
1060 if (li < sizeof(struct esis_header_t) + 2) {
1061 ND_PRINT((ndo, " length indicator < min PDU size %d:", li));
1062 while (--length != 0)
1063 ND_PRINT((ndo, "%02X", *pptr++));
1067 esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK;
1069 if (ndo->ndo_vflag < 1) {
1070 ND_PRINT((ndo, "%s%s, length %u",
1071 ndo->ndo_eflag ? "" : ", ",
1072 tok2str(esis_pdu_values,"unknown type (%u)",esis_pdu_type),
1076 ND_PRINT((ndo, "%slength %u\n\t%s (%u)",
1077 ndo->ndo_eflag ? "" : ", ",
1079 tok2str(esis_pdu_values,"unknown type: %u", esis_pdu_type),
1082 ND_PRINT((ndo, ", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" ));
1083 ND_PRINT((ndo, ", checksum: 0x%04x", EXTRACT_16BITS(esis_header->cksum)));
1085 osi_print_cksum(ndo, pptr, EXTRACT_16BITS(esis_header->cksum), 7, li);
1087 ND_PRINT((ndo, ", holding time: %us, length indicator: %u",
1088 EXTRACT_16BITS(esis_header->holdtime), li));
1090 if (ndo->ndo_vflag > 1)
1091 print_unknown_data(ndo, optr, "\n\t", sizeof(struct esis_header_t));
1093 pptr += sizeof(struct esis_header_t);
1094 li -= sizeof(struct esis_header_t);
1096 switch (esis_pdu_type) {
1097 case ESIS_PDU_REDIRECT: {
1098 const uint8_t *dst, *snpa, *neta;
1099 u_int dstl, snpal, netal;
1103 ND_PRINT((ndo, ", bad redirect/li"));
1109 ND_TCHECK2(*pptr, dstl);
1111 ND_PRINT((ndo, ", bad redirect/li"));
1117 ND_PRINT((ndo, "\n\t %s", isonsap_string(dst, dstl)));
1121 ND_PRINT((ndo, ", bad redirect/li"));
1127 ND_TCHECK2(*pptr, snpal);
1129 ND_PRINT((ndo, ", bad redirect/li"));
1137 ND_PRINT((ndo, ", bad redirect/li"));
1142 ND_TCHECK2(*pptr, netal);
1144 ND_PRINT((ndo, ", bad redirect/li"));
1152 ND_PRINT((ndo, "\n\t %s", etheraddr_string(ndo, snpa)));
1154 ND_PRINT((ndo, "\n\t %s", isonsap_string(neta, netal)));
1161 ND_PRINT((ndo, ", bad esh/li"));
1164 source_address_number = *pptr;
1168 ND_PRINT((ndo, "\n\t Number of Source Addresses: %u", source_address_number));
1170 while (source_address_number > 0) {
1173 ND_PRINT((ndo, ", bad esh/li"));
1176 source_address_length = *pptr;
1180 ND_TCHECK2(*pptr, source_address_length);
1181 if (li < source_address_length) {
1182 ND_PRINT((ndo, ", bad esh/li"));
1185 ND_PRINT((ndo, "\n\t NET (length: %u): %s",
1186 source_address_length,
1187 isonsap_string(pptr, source_address_length)));
1188 pptr += source_address_length;
1189 li -= source_address_length;
1190 source_address_number--;
1195 case ESIS_PDU_ISH: {
1198 ND_PRINT((ndo, ", bad ish/li"));
1201 source_address_length = *pptr;
1204 ND_TCHECK2(*pptr, source_address_length);
1205 if (li < source_address_length) {
1206 ND_PRINT((ndo, ", bad ish/li"));
1209 ND_PRINT((ndo, "\n\t NET (length: %u): %s", source_address_length, isonsap_string(pptr, source_address_length)));
1210 pptr += source_address_length;
1211 li -= source_address_length;
1216 if (ndo->ndo_vflag <= 1) {
1217 if (pptr < ndo->ndo_snapend)
1218 print_unknown_data(ndo, pptr, "\n\t ", ndo->ndo_snapend - pptr);
1223 /* now walk the options */
1226 const uint8_t *tptr;
1229 ND_PRINT((ndo, ", bad opts/li"));
1232 ND_TCHECK2(*pptr, 2);
1237 ND_PRINT((ndo, ", opt (%d) too long", op));
1243 ND_PRINT((ndo, "\n\t %s Option #%u, length %u, value: ",
1244 tok2str(esis_option_values,"Unknown",op),
1250 case ESIS_OPTION_ES_CONF_TIME:
1252 ND_TCHECK2(*pptr, 2);
1253 ND_PRINT((ndo, "%us", EXTRACT_16BITS(tptr)));
1255 ND_PRINT((ndo, "(bad length)"));
1258 case ESIS_OPTION_PROTOCOLS:
1261 ND_PRINT((ndo, "%s (0x%02x)",
1262 tok2str(nlpid_values,
1266 if (opli>1) /* further NPLIDs ? - put comma */
1267 ND_PRINT((ndo, ", "));
1274 * FIXME those are the defined Options that lack a decoder
1275 * you are welcome to contribute code ;-)
1278 case ESIS_OPTION_QOS_MAINTENANCE:
1279 case ESIS_OPTION_SECURITY:
1280 case ESIS_OPTION_PRIORITY:
1281 case ESIS_OPTION_ADDRESS_MASK:
1282 case ESIS_OPTION_SNPA_MASK:
1285 print_unknown_data(ndo, tptr, "\n\t ", opli);
1288 if (ndo->ndo_vflag > 1)
1289 print_unknown_data(ndo, pptr, "\n\t ", opli);
1297 isis_print_mcid(netdissect_options *ndo,
1298 const struct isis_spb_mcid *mcid)
1302 ND_PRINT((ndo, "ID: %d, Name: ", mcid->format_id));
1306 ND_PRINT((ndo, "%c", mcid->name[i]));
1307 if(mcid->name[i] == '\0')
1311 ND_PRINT((ndo, "\n\t Lvl: %d", EXTRACT_16BITS(mcid->revision_lvl)));
1313 ND_PRINT((ndo, ", Digest: "));
1316 ND_PRINT((ndo, "%.2x ", mcid->digest[i]));
1320 isis_print_mt_port_cap_subtlv(netdissect_options *ndo,
1321 const uint8_t *tptr, int len)
1323 int stlv_type, stlv_len;
1324 const struct isis_subtlv_spb_mcid *subtlv_spb_mcid;
1329 stlv_type = *(tptr++);
1330 stlv_len = *(tptr++);
1332 /* first lets see if we know the subTLVs name*/
1333 ND_PRINT((ndo, "\n\t %s subTLV #%u, length: %u",
1334 tok2str(isis_mt_port_cap_subtlv_values, "unknown", stlv_type),
1338 /*len -= TLV_TYPE_LEN_OFFSET;*/
1343 case ISIS_SUBTLV_SPB_MCID:
1345 if (!ND_TTEST2(*(tptr), ISIS_SUBTLV_SPB_MCID_MIN_LEN))
1348 subtlv_spb_mcid = (struct isis_subtlv_spb_mcid *)tptr;
1350 ND_PRINT((ndo, "\n\t MCID: "));
1351 isis_print_mcid(ndo, &(subtlv_spb_mcid->mcid));
1353 /*tptr += SPB_MCID_MIN_LEN;
1354 len -= SPB_MCID_MIN_LEN; */
1356 ND_PRINT((ndo, "\n\t AUX-MCID: "));
1357 isis_print_mcid(ndo, &(subtlv_spb_mcid->aux_mcid));
1359 /*tptr += SPB_MCID_MIN_LEN;
1360 len -= SPB_MCID_MIN_LEN; */
1361 tptr = tptr + sizeof(struct isis_subtlv_spb_mcid);
1362 len = len - sizeof(struct isis_subtlv_spb_mcid);
1367 case ISIS_SUBTLV_SPB_DIGEST:
1369 if (!ND_TTEST2(*(tptr), ISIS_SUBTLV_SPB_DIGEST_MIN_LEN))
1372 ND_PRINT((ndo, "\n\t RES: %d V: %d A: %d D: %d",
1373 (*(tptr) >> 5), (((*tptr)>> 4) & 0x01),
1374 ((*(tptr) >> 2) & 0x03), ((*tptr) & 0x03)));
1378 ND_PRINT((ndo, "\n\t Digest: "));
1382 ND_PRINT((ndo, "%08x ", EXTRACT_32BITS(tptr)));
1383 if (i%4 == 0 && i != 8)
1384 ND_PRINT((ndo, "\n\t "));
1388 len = len - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN;
1393 case ISIS_SUBTLV_SPB_BVID:
1395 if (!ND_TTEST2(*(tptr), stlv_len))
1400 if (!ND_TTEST2(*(tptr), ISIS_SUBTLV_SPB_BVID_MIN_LEN))
1403 ND_PRINT((ndo, "\n\t ECT: %08x",
1404 EXTRACT_32BITS(tptr)));
1408 ND_PRINT((ndo, " BVID: %d, U:%01x M:%01x ",
1409 (EXTRACT_16BITS (tptr) >> 4) ,
1410 (EXTRACT_16BITS (tptr) >> 3) & 0x01,
1411 (EXTRACT_16BITS (tptr) >> 2) & 0x01));
1414 len = len - ISIS_SUBTLV_SPB_BVID_MIN_LEN;
1428 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
1433 isis_print_mt_capability_subtlv(netdissect_options *ndo,
1434 const uint8_t *tptr, int len)
1436 int stlv_type, stlv_len, tmp;
1440 stlv_type = *(tptr++);
1441 stlv_len = *(tptr++);
1443 /* first lets see if we know the subTLVs name*/
1444 ND_PRINT((ndo, "\n\t %s subTLV #%u, length: %u",
1445 tok2str(isis_mt_capability_subtlv_values, "unknown", stlv_type),
1453 case ISIS_SUBTLV_SPB_INSTANCE:
1455 if (!ND_TTEST2(*(tptr), ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN))
1458 ND_PRINT((ndo, "\n\t CIST Root-ID: %08x", EXTRACT_32BITS(tptr)));
1460 ND_PRINT((ndo, " %08x", EXTRACT_32BITS(tptr)));
1462 ND_PRINT((ndo, ", Path Cost: %08x", EXTRACT_32BITS(tptr)));
1464 ND_PRINT((ndo, ", Prio: %d", EXTRACT_16BITS(tptr)));
1466 ND_PRINT((ndo, "\n\t RES: %d",
1467 EXTRACT_16BITS(tptr) >> 5));
1468 ND_PRINT((ndo, ", V: %d",
1469 (EXTRACT_16BITS(tptr) >> 4) & 0x0001));
1470 ND_PRINT((ndo, ", SPSource-ID: %d",
1471 (EXTRACT_32BITS(tptr) & 0x000fffff)));
1473 ND_PRINT((ndo, ", No of Trees: %x", *(tptr)));
1477 len = len - ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN;
1481 if (!ND_TTEST2(*(tptr), ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN))
1484 ND_PRINT((ndo, "\n\t U:%d, M:%d, A:%d, RES:%d",
1485 *(tptr) >> 7, (*(tptr) >> 6) & 0x01,
1486 (*(tptr) >> 5) & 0x01, (*(tptr) & 0x1f)));
1490 ND_PRINT((ndo, ", ECT: %08x", EXTRACT_32BITS(tptr)));
1494 ND_PRINT((ndo, ", BVID: %d, SPVID: %d",
1495 (EXTRACT_24BITS(tptr) >> 12) & 0x000fff,
1496 EXTRACT_24BITS(tptr) & 0x000fff));
1499 len = len - ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN;
1505 case ISIS_SUBTLV_SPBM_SI:
1507 if (!ND_TTEST2(*(tptr), 6))
1510 ND_PRINT((ndo, "\n\t BMAC: %08x", EXTRACT_32BITS(tptr)));
1512 ND_PRINT((ndo, "%04x", EXTRACT_16BITS(tptr)));
1515 ND_PRINT((ndo, ", RES: %d, VID: %d", EXTRACT_16BITS(tptr) >> 12,
1516 (EXTRACT_16BITS(tptr)) & 0x0fff));
1520 stlv_len = stlv_len - 8;
1524 ND_PRINT((ndo, "\n\t T: %d, R: %d, RES: %d, ISID: %d",
1525 (EXTRACT_32BITS(tptr) >> 31),
1526 (EXTRACT_32BITS(tptr) >> 30) & 0x01,
1527 (EXTRACT_32BITS(tptr) >> 24) & 0x03f,
1528 (EXTRACT_32BITS(tptr)) & 0x0ffffff));
1532 stlv_len = stlv_len - 4;
1544 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
1548 /* shared routine for printing system, node and lsp-ids */
1550 isis_print_id(const uint8_t *cp, int id_len)
1553 static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")];
1556 for (i = 1; i <= SYSTEM_ID_LEN; i++) {
1557 snprintf(pos, sizeof(id) - (pos - id), "%02x", *cp++);
1559 if (i == 2 || i == 4)
1562 if (id_len >= NODE_ID_LEN) {
1563 snprintf(pos, sizeof(id) - (pos - id), ".%02x", *cp++);
1566 if (id_len == LSP_ID_LEN)
1567 snprintf(pos, sizeof(id) - (pos - id), "-%02x", *cp);
1571 /* print the 4-byte metric block which is common found in the old-style TLVs */
1573 isis_print_metric_block(netdissect_options *ndo,
1574 const struct isis_metric_block *isis_metric_block)
1576 ND_PRINT((ndo, ", Default Metric: %d, %s",
1577 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
1578 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal"));
1579 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
1580 ND_PRINT((ndo, "\n\t\t Delay Metric: %d, %s",
1581 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
1582 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal"));
1583 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
1584 ND_PRINT((ndo, "\n\t\t Expense Metric: %d, %s",
1585 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
1586 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal"));
1587 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
1588 ND_PRINT((ndo, "\n\t\t Error Metric: %d, %s",
1589 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
1590 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal"));
1592 return(1); /* everything is ok */
1596 isis_print_tlv_ip_reach(netdissect_options *ndo,
1597 const uint8_t *cp, const char *ident, int length)
1600 const struct isis_tlv_ip_reach *tlv_ip_reach;
1602 tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
1604 while (length > 0) {
1605 if ((size_t)length < sizeof(*tlv_ip_reach)) {
1606 ND_PRINT((ndo, "short IPv4 Reachability (%d vs %lu)",
1608 (unsigned long)sizeof(*tlv_ip_reach)));
1612 if (!ND_TTEST(*tlv_ip_reach))
1615 prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
1617 if (prefix_len == -1)
1618 ND_PRINT((ndo, "%sIPv4 prefix: %s mask %s",
1620 ipaddr_string(ndo, (tlv_ip_reach->prefix)),
1621 ipaddr_string(ndo, (tlv_ip_reach->mask))));
1623 ND_PRINT((ndo, "%sIPv4 prefix: %15s/%u",
1625 ipaddr_string(ndo, (tlv_ip_reach->prefix)),
1628 ND_PRINT((ndo, ", Distribution: %s, Metric: %u, %s",
1629 ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
1630 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
1631 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal"));
1633 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
1634 ND_PRINT((ndo, "%s Delay Metric: %u, %s",
1636 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
1637 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal"));
1639 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
1640 ND_PRINT((ndo, "%s Expense Metric: %u, %s",
1642 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
1643 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal"));
1645 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
1646 ND_PRINT((ndo, "%s Error Metric: %u, %s",
1648 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
1649 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal"));
1651 length -= sizeof(struct isis_tlv_ip_reach);
1658 * this is the common IP-REACH subTLV decoder it is called
1659 * from various EXTD-IP REACH TLVs (135,235,236,237)
1663 isis_print_ip_reach_subtlv(netdissect_options *ndo,
1664 const uint8_t *tptr, int subt, int subl,
1665 const char *ident) {
1667 /* first lets see if we know the subTLVs name*/
1668 ND_PRINT((ndo, "%s%s subTLV #%u, length: %u",
1669 ident, tok2str(isis_ext_ip_reach_subtlv_values, "unknown", subt),
1672 if (!ND_TTEST2(*tptr,subl))
1676 case ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR: /* fall through */
1677 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32:
1679 ND_PRINT((ndo, ", 0x%08x (=%u)",
1680 EXTRACT_32BITS(tptr),
1681 EXTRACT_32BITS(tptr)));
1686 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64:
1688 ND_PRINT((ndo, ", 0x%08x%08x",
1689 EXTRACT_32BITS(tptr),
1690 EXTRACT_32BITS(tptr+4)));
1696 if (!print_unknown_data(ndo, tptr, "\n\t\t ", subl))
1703 ND_PRINT((ndo, "%spacket exceeded snapshot", ident));
1708 * this is the common IS-REACH subTLV decoder it is called
1709 * from isis_print_ext_is_reach()
1713 isis_print_is_reach_subtlv(netdissect_options *ndo,
1714 const uint8_t *tptr, u_int subt, u_int subl,
1715 const char *ident) {
1717 u_int te_class,priority_level,gmpls_switch_cap;
1718 union { /* int to float conversion buffer for several subTLVs */
1723 /* first lets see if we know the subTLVs name*/
1724 ND_PRINT((ndo, "%s%s subTLV #%u, length: %u",
1725 ident, tok2str(isis_ext_is_reach_subtlv_values, "unknown", subt),
1728 if (!ND_TTEST2(*tptr,subl))
1732 case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
1733 case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
1734 case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
1736 ND_PRINT((ndo, ", 0x%08x", EXTRACT_32BITS(tptr)));
1737 if (subl == 8) /* rfc4205 */
1738 ND_PRINT((ndo, ", 0x%08x", EXTRACT_32BITS(tptr+4)));
1741 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
1742 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
1743 if (subl >= sizeof(struct in_addr))
1744 ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr)));
1746 case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
1747 case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
1749 bw.i = EXTRACT_32BITS(tptr);
1750 ND_PRINT((ndo, ", %.3f Mbps", bw.f * 8 / 1000000));
1753 case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
1755 for (te_class = 0; te_class < 8; te_class++) {
1756 bw.i = EXTRACT_32BITS(tptr);
1757 ND_PRINT((ndo, "%s TE-Class %u: %.3f Mbps",
1760 bw.f * 8 / 1000000));
1765 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */
1766 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD:
1767 ND_PRINT((ndo, "%sBandwidth Constraints Model ID: %s (%u)",
1769 tok2str(diffserv_te_bc_values, "unknown", *tptr),
1772 /* decode BCs until the subTLV ends */
1773 for (te_class = 0; te_class < (subl-1)/4; te_class++) {
1774 bw.i = EXTRACT_32BITS(tptr);
1775 ND_PRINT((ndo, "%s Bandwidth constraint CT%u: %.3f Mbps",
1778 bw.f * 8 / 1000000));
1782 case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC:
1784 ND_PRINT((ndo, ", %u", EXTRACT_24BITS(tptr)));
1786 case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE:
1788 ND_PRINT((ndo, ", [ %s ] (0x%04x)",
1789 bittok2str(isis_subtlv_link_attribute_values,
1791 EXTRACT_16BITS(tptr)),
1792 EXTRACT_16BITS(tptr)));
1795 case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
1797 ND_PRINT((ndo, ", %s, Priority %u",
1798 bittok2str(gmpls_link_prot_values, "none", *tptr),
1802 case ISIS_SUBTLV_SPB_METRIC:
1804 ND_PRINT((ndo, ", LM: %u", EXTRACT_24BITS(tptr)));
1806 ND_PRINT((ndo, ", P: %u", *(tptr)));
1808 ND_PRINT((ndo, ", P-ID: %u", EXTRACT_16BITS(tptr)));
1811 case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
1813 gmpls_switch_cap = *tptr;
1814 ND_PRINT((ndo, "%s Interface Switching Capability:%s",
1816 tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap)));
1817 ND_PRINT((ndo, ", LSP Encoding: %s",
1818 tok2str(gmpls_encoding_values, "Unknown", *(tptr + 1))));
1820 ND_PRINT((ndo, "%s Max LSP Bandwidth:", ident));
1821 for (priority_level = 0; priority_level < 8; priority_level++) {
1822 bw.i = EXTRACT_32BITS(tptr);
1823 ND_PRINT((ndo, "%s priority level %d: %.3f Mbps",
1826 bw.f * 8 / 1000000));
1830 switch (gmpls_switch_cap) {
1835 bw.i = EXTRACT_32BITS(tptr);
1836 ND_PRINT((ndo, "%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f * 8 / 1000000));
1837 ND_PRINT((ndo, "%s Interface MTU: %u", ident, EXTRACT_16BITS(tptr + 4)));
1840 bw.i = EXTRACT_32BITS(tptr);
1841 ND_PRINT((ndo, "%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f * 8 / 1000000));
1842 ND_PRINT((ndo, "%s Indication %s", ident,
1843 tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", *(tptr + 4))));
1846 /* there is some optional stuff left to decode but this is as of yet
1847 not specified so just lets hexdump what is left */
1849 if (!print_unknown_data(ndo, tptr, "\n\t\t ", subl))
1856 if (!print_unknown_data(ndo, tptr, "\n\t\t ", subl))
1863 ND_PRINT((ndo, "%spacket exceeded snapshot", ident));
1869 * this is the common IS-REACH decoder it is called
1870 * from various EXTD-IS REACH style TLVs (22,24,222)
1874 isis_print_ext_is_reach(netdissect_options *ndo,
1875 const uint8_t *tptr, const char *ident, int tlv_type) {
1877 char ident_buffer[20];
1878 int subtlv_type,subtlv_len,subtlv_sum_len;
1879 int proc_bytes = 0; /* how many bytes did we process ? */
1881 if (!ND_TTEST2(*tptr, NODE_ID_LEN))
1884 ND_PRINT((ndo, "%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN)));
1885 tptr+=(NODE_ID_LEN);
1887 if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */
1888 if (!ND_TTEST2(*tptr, 3)) /* and is therefore skipped */
1890 ND_PRINT((ndo, ", Metric: %d", EXTRACT_24BITS(tptr)));
1894 if (!ND_TTEST2(*tptr, 1))
1896 subtlv_sum_len=*(tptr++); /* read out subTLV length */
1897 proc_bytes=NODE_ID_LEN+3+1;
1898 ND_PRINT((ndo, ", %ssub-TLVs present",subtlv_sum_len ? "" : "no "));
1899 if (subtlv_sum_len) {
1900 ND_PRINT((ndo, " (%u)", subtlv_sum_len));
1901 while (subtlv_sum_len>0) {
1902 if (!ND_TTEST2(*tptr,2))
1904 subtlv_type=*(tptr++);
1905 subtlv_len=*(tptr++);
1906 /* prepend the ident string */
1907 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1908 if (!isis_print_is_reach_subtlv(ndo, tptr, subtlv_type, subtlv_len, ident_buffer))
1911 subtlv_sum_len-=(subtlv_len+2);
1912 proc_bytes+=(subtlv_len+2);
1919 * this is the common Multi Topology ID decoder
1920 * it is called from various MT-TLVs (222,229,235,237)
1924 isis_print_mtid(netdissect_options *ndo,
1925 const uint8_t *tptr, const char *ident) {
1927 if (!ND_TTEST2(*tptr, 2))
1930 ND_PRINT((ndo, "%s%s",
1932 tok2str(isis_mt_values,
1933 "Reserved for IETF Consensus",
1934 ISIS_MASK_MTID(EXTRACT_16BITS(tptr)))));
1936 ND_PRINT((ndo, " Topology (0x%03x), Flags: [%s]",
1937 ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
1938 bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr)))));
1944 * this is the common extended IP reach decoder
1945 * it is called from TLVs (135,235,236,237)
1946 * we process the TLV and optional subTLVs and return
1947 * the amount of processed bytes
1951 isis_print_extd_ip_reach(netdissect_options *ndo,
1952 const uint8_t *tptr, const char *ident, uint16_t afi) {
1954 char ident_buffer[20];
1956 uint8_t prefix[sizeof(struct in6_addr)]; /* shared copy buffer for IPv4 and IPv6 prefixes */
1958 uint8_t prefix[sizeof(struct in_addr)]; /* shared copy buffer for IPv4 prefixes */
1960 u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
1962 if (!ND_TTEST2(*tptr, 4))
1964 metric = EXTRACT_32BITS(tptr);
1968 if (afi == AF_INET) {
1969 if (!ND_TTEST2(*tptr, 1)) /* fetch status byte */
1971 status_byte=*(tptr++);
1972 bit_length = status_byte&0x3f;
1973 if (bit_length > 32) {
1974 ND_PRINT((ndo, "%sIPv4 prefix: bad bit length %u",
1981 } else if (afi == AF_INET6) {
1982 if (!ND_TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
1984 status_byte=*(tptr++);
1985 bit_length=*(tptr++);
1986 if (bit_length > 128) {
1987 ND_PRINT((ndo, "%sIPv6 prefix: bad bit length %u",
1995 return (0); /* somebody is fooling us */
1997 byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
1999 if (!ND_TTEST2(*tptr, byte_length))
2001 memset(prefix, 0, sizeof prefix); /* clear the copy buffer */
2002 memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
2004 processed+=byte_length;
2007 ND_PRINT((ndo, "%sIPv4 prefix: %15s/%u",
2009 ipaddr_string(ndo, prefix),
2012 if (afi == AF_INET6)
2013 ND_PRINT((ndo, "%sIPv6 prefix: %s/%u",
2015 ip6addr_string(ndo, prefix),
2019 ND_PRINT((ndo, ", Distribution: %s, Metric: %u",
2020 ISIS_MASK_TLV_EXTD_IP_UPDOWN(status_byte) ? "down" : "up",
2023 if (afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
2024 ND_PRINT((ndo, ", sub-TLVs present"));
2026 if (afi == AF_INET6)
2027 ND_PRINT((ndo, ", %s%s",
2028 ISIS_MASK_TLV_EXTD_IP6_IE(status_byte) ? "External" : "Internal",
2029 ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : ""));
2032 if ((afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
2034 || (afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte))
2037 /* assume that one prefix can hold more
2038 than one subTLV - therefore the first byte must reflect
2039 the aggregate bytecount of the subTLVs for this prefix
2041 if (!ND_TTEST2(*tptr, 1))
2044 processed+=sublen+1;
2045 ND_PRINT((ndo, " (%u)", sublen)); /* print out subTLV length */
2048 if (!ND_TTEST2(*tptr,2))
2050 subtlvtype=*(tptr++);
2051 subtlvlen=*(tptr++);
2052 /* prepend the ident string */
2053 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
2054 if (!isis_print_ip_reach_subtlv(ndo, tptr, subtlvtype, subtlvlen, ident_buffer))
2057 sublen-=(subtlvlen+2);
2065 * Decode IS-IS packets. Return 0 on error.
2069 isis_print(netdissect_options *ndo,
2070 const uint8_t *p, u_int length)
2072 const struct isis_common_header *isis_header;
2074 const struct isis_iih_lan_header *header_iih_lan;
2075 const struct isis_iih_ptp_header *header_iih_ptp;
2076 struct isis_lsp_header *header_lsp;
2077 const struct isis_csnp_header *header_csnp;
2078 const struct isis_psnp_header *header_psnp;
2080 const struct isis_tlv_lsp *tlv_lsp;
2081 const struct isis_tlv_ptp_adj *tlv_ptp_adj;
2082 const struct isis_tlv_is_reach *tlv_is_reach;
2083 const struct isis_tlv_es_reach *tlv_es_reach;
2085 uint8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
2086 uint8_t ext_is_len, ext_ip_len, mt_len;
2087 const uint8_t *optr, *pptr, *tptr;
2088 u_short packet_len,pdu_len, key_id;
2093 optr = p; /* initialize the _o_riginal pointer to the packet start -
2094 need it for parsing the checksum TLV and authentication
2096 isis_header = (const struct isis_common_header *)p;
2097 ND_TCHECK(*isis_header);
2098 pptr = p+(ISIS_COMMON_HEADER_SIZE);
2099 header_iih_lan = (const struct isis_iih_lan_header *)pptr;
2100 header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
2101 header_lsp = (struct isis_lsp_header *)pptr;
2102 header_csnp = (const struct isis_csnp_header *)pptr;
2103 header_psnp = (const struct isis_psnp_header *)pptr;
2105 if (!ndo->ndo_eflag)
2106 ND_PRINT((ndo, "IS-IS"));
2109 * Sanity checking of the header.
2112 if (isis_header->version != ISIS_VERSION) {
2113 ND_PRINT((ndo, "version %d packet not supported", isis_header->version));
2117 if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) {
2118 ND_PRINT((ndo, "system ID length of %d is not supported",
2119 isis_header->id_length));
2123 if (isis_header->pdu_version != ISIS_VERSION) {
2124 ND_PRINT((ndo, "version %d packet not supported", isis_header->pdu_version));
2128 max_area = isis_header->max_area;
2131 max_area = 3; /* silly shit */
2134 ND_PRINT((ndo, "bad packet -- 255 areas"));
2140 id_length = isis_header->id_length;
2143 id_length = 6; /* silly shit again */
2145 case 1: /* 1-8 are valid sys-ID lenghts */
2155 id_length = 0; /* entirely useless */
2161 /* toss any non 6-byte sys-ID len PDUs */
2162 if (id_length != 6 ) {
2163 ND_PRINT((ndo, "bad packet -- illegal sys-ID length (%u)", id_length));
2167 pdu_type=isis_header->pdu_type;
2169 /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
2170 if (ndo->ndo_vflag < 1) {
2171 ND_PRINT((ndo, "%s%s",
2172 ndo->ndo_eflag ? "" : ", ",
2173 tok2str(isis_pdu_values, "unknown PDU-Type %u", pdu_type)));
2177 case ISIS_PDU_L1_LAN_IIH:
2178 case ISIS_PDU_L2_LAN_IIH:
2179 ND_PRINT((ndo, ", src-id %s",
2180 isis_print_id(header_iih_lan->source_id, SYSTEM_ID_LEN)));
2181 ND_PRINT((ndo, ", lan-id %s, prio %u",
2182 isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN),
2183 header_iih_lan->priority));
2185 case ISIS_PDU_PTP_IIH:
2186 ND_PRINT((ndo, ", src-id %s", isis_print_id(header_iih_ptp->source_id, SYSTEM_ID_LEN)));
2188 case ISIS_PDU_L1_LSP:
2189 case ISIS_PDU_L2_LSP:
2190 ND_PRINT((ndo, ", lsp-id %s, seq 0x%08x, lifetime %5us",
2191 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
2192 EXTRACT_32BITS(header_lsp->sequence_number),
2193 EXTRACT_16BITS(header_lsp->remaining_lifetime)));
2195 case ISIS_PDU_L1_CSNP:
2196 case ISIS_PDU_L2_CSNP:
2197 ND_PRINT((ndo, ", src-id %s", isis_print_id(header_csnp->source_id, NODE_ID_LEN)));
2199 case ISIS_PDU_L1_PSNP:
2200 case ISIS_PDU_L2_PSNP:
2201 ND_PRINT((ndo, ", src-id %s", isis_print_id(header_psnp->source_id, NODE_ID_LEN)));
2205 ND_PRINT((ndo, ", length %u", length));
2210 /* ok they seem to want to know everything - lets fully decode it */
2211 ND_PRINT((ndo, "%slength %u", ndo->ndo_eflag ? "" : ", ", length));
2213 ND_PRINT((ndo, "\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
2214 tok2str(isis_pdu_values,
2217 isis_header->fixed_len,
2218 isis_header->version,
2219 isis_header->pdu_version,
2221 isis_header->id_length,
2223 isis_header->max_area));
2225 if (ndo->ndo_vflag > 1) {
2226 if (!print_unknown_data(ndo, optr, "\n\t", 8)) /* provide the _o_riginal pointer */
2227 return(0); /* for optionally debugging the common header */
2232 case ISIS_PDU_L1_LAN_IIH:
2233 case ISIS_PDU_L2_LAN_IIH:
2234 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
2235 ND_PRINT((ndo, ", bogus fixed header length %u should be %lu",
2236 isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE));
2240 pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
2241 if (packet_len>pdu_len) {
2242 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2246 ND_TCHECK(*header_iih_lan);
2247 ND_PRINT((ndo, "\n\t source-id: %s, holding time: %us, Flags: [%s]",
2248 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
2249 EXTRACT_16BITS(header_iih_lan->holding_time),
2250 tok2str(isis_iih_circuit_type_values,
2251 "unknown circuit type 0x%02x",
2252 header_iih_lan->circuit_type)));
2254 ND_PRINT((ndo, "\n\t lan-id: %s, Priority: %u, PDU length: %u",
2255 isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
2256 (header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK,
2259 if (ndo->ndo_vflag > 1) {
2260 if (!print_unknown_data(ndo, pptr, "\n\t ", ISIS_IIH_LAN_HEADER_SIZE))
2264 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
2265 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
2268 case ISIS_PDU_PTP_IIH:
2269 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
2270 ND_PRINT((ndo, ", bogus fixed header length %u should be %lu",
2271 isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE));
2275 pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
2276 if (packet_len>pdu_len) {
2277 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2281 ND_TCHECK(*header_iih_ptp);
2282 ND_PRINT((ndo, "\n\t source-id: %s, holding time: %us, Flags: [%s]",
2283 isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
2284 EXTRACT_16BITS(header_iih_ptp->holding_time),
2285 tok2str(isis_iih_circuit_type_values,
2286 "unknown circuit type 0x%02x",
2287 header_iih_ptp->circuit_type)));
2289 ND_PRINT((ndo, "\n\t circuit-id: 0x%02x, PDU length: %u",
2290 header_iih_ptp->circuit_id,
2293 if (ndo->ndo_vflag > 1) {
2294 if (!print_unknown_data(ndo, pptr, "\n\t ", ISIS_IIH_PTP_HEADER_SIZE))
2298 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
2299 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
2302 case ISIS_PDU_L1_LSP:
2303 case ISIS_PDU_L2_LSP:
2304 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
2305 ND_PRINT((ndo, ", bogus fixed header length %u should be %lu",
2306 isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE));
2310 pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
2311 if (packet_len>pdu_len) {
2312 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2316 ND_TCHECK(*header_lsp);
2317 ND_PRINT((ndo, "\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us\n\t chksum: 0x%04x",
2318 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
2319 EXTRACT_32BITS(header_lsp->sequence_number),
2320 EXTRACT_16BITS(header_lsp->remaining_lifetime),
2321 EXTRACT_16BITS(header_lsp->checksum)));
2324 osi_print_cksum(ndo, (uint8_t *)header_lsp->lsp_id,
2325 EXTRACT_16BITS(header_lsp->checksum), 12, length-12);
2328 * Clear checksum and lifetime prior to signature verification.
2330 header_lsp->checksum[0] = 0;
2331 header_lsp->checksum[1] = 0;
2332 header_lsp->remaining_lifetime[0] = 0;
2333 header_lsp->remaining_lifetime[1] = 0;
2336 ND_PRINT((ndo, ", PDU length: %u, Flags: [ %s",
2338 ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : ""));
2340 if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
2341 ND_PRINT((ndo, "%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : ""));
2342 ND_PRINT((ndo, "%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : ""));
2343 ND_PRINT((ndo, "%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : ""));
2344 ND_PRINT((ndo, "%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : ""));
2345 ND_PRINT((ndo, "ATT bit set, "));
2347 ND_PRINT((ndo, "%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : ""));
2348 ND_PRINT((ndo, "%s ]", tok2str(isis_lsp_istype_values, "Unknown(0x%x)",
2349 ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock))));
2351 if (ndo->ndo_vflag > 1) {
2352 if (!print_unknown_data(ndo, pptr, "\n\t ", ISIS_LSP_HEADER_SIZE))
2356 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2357 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2360 case ISIS_PDU_L1_CSNP:
2361 case ISIS_PDU_L2_CSNP:
2362 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
2363 ND_PRINT((ndo, ", bogus fixed header length %u should be %lu",
2364 isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE));
2368 pdu_len=EXTRACT_16BITS(header_csnp->pdu_len);
2369 if (packet_len>pdu_len) {
2370 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2374 ND_TCHECK(*header_csnp);
2375 ND_PRINT((ndo, "\n\t source-id: %s, PDU length: %u",
2376 isis_print_id(header_csnp->source_id, NODE_ID_LEN),
2378 ND_PRINT((ndo, "\n\t start lsp-id: %s",
2379 isis_print_id(header_csnp->start_lsp_id, LSP_ID_LEN)));
2380 ND_PRINT((ndo, "\n\t end lsp-id: %s",
2381 isis_print_id(header_csnp->end_lsp_id, LSP_ID_LEN)));
2383 if (ndo->ndo_vflag > 1) {
2384 if (!print_unknown_data(ndo, pptr, "\n\t ", ISIS_CSNP_HEADER_SIZE))
2388 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2389 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2392 case ISIS_PDU_L1_PSNP:
2393 case ISIS_PDU_L2_PSNP:
2394 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) {
2395 ND_PRINT((ndo, "- bogus fixed header length %u should be %lu",
2396 isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE));
2400 pdu_len=EXTRACT_16BITS(header_psnp->pdu_len);
2401 if (packet_len>pdu_len) {
2402 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2406 ND_TCHECK(*header_psnp);
2407 ND_PRINT((ndo, "\n\t source-id: %s, PDU length: %u",
2408 isis_print_id(header_psnp->source_id, NODE_ID_LEN),
2411 if (ndo->ndo_vflag > 1) {
2412 if (!print_unknown_data(ndo, pptr, "\n\t ", ISIS_PSNP_HEADER_SIZE))
2416 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2417 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2421 if (!print_unknown_data(ndo, pptr, "\n\t ", length))
2427 * Now print the TLV's.
2430 while (packet_len >= 2) {
2431 if (pptr == ndo->ndo_snapend) {
2435 if (!ND_TTEST2(*pptr, 2)) {
2436 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot (%ld) bytes",
2437 (long)(pptr - ndo->ndo_snapend)));
2442 tmp =tlv_len; /* copy temporary len & pointer to packet data */
2445 if (tlv_len > packet_len) {
2449 /* first lets see if we know the TLVs name*/
2450 ND_PRINT((ndo, "\n\t %s TLV #%u, length: %u",
2451 tok2str(isis_tlv_values,
2457 if (tlv_len == 0) /* something is malformed */
2460 /* now check if we have a decoder otherwise do a hexdump at the end*/
2462 case ISIS_TLV_AREA_ADDR:
2463 if (!ND_TTEST2(*tptr, 1))
2466 while (tmp && alen < tmp) {
2467 ND_PRINT((ndo, "\n\t Area address (length: %u): %s",
2469 isonsap_string(tptr, alen)));
2472 if (tmp==0) /* if this is the last area address do not attemt a boundary check */
2474 if (!ND_TTEST2(*tptr, 1))
2479 case ISIS_TLV_ISNEIGH:
2480 while (tmp >= ETHER_ADDR_LEN) {
2481 if (!ND_TTEST2(*tptr, ETHER_ADDR_LEN))
2483 ND_PRINT((ndo, "\n\t SNPA: %s", isis_print_id(tptr, ETHER_ADDR_LEN)));
2484 tmp -= ETHER_ADDR_LEN;
2485 tptr += ETHER_ADDR_LEN;
2489 case ISIS_TLV_ISNEIGH_VARLEN:
2490 if (!ND_TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */
2492 lan_alen = *tptr++; /* LAN address length */
2493 if (lan_alen == 0) {
2494 ND_PRINT((ndo, "\n\t LAN address length 0 bytes (invalid)"));
2498 ND_PRINT((ndo, "\n\t LAN address length %u bytes ", lan_alen));
2499 while (tmp >= lan_alen) {
2500 if (!ND_TTEST2(*tptr, lan_alen))
2502 ND_PRINT((ndo, "\n\t\tIS Neighbor: %s", isis_print_id(tptr, lan_alen)));
2508 case ISIS_TLV_PADDING:
2511 case ISIS_TLV_MT_IS_REACH:
2512 mt_len = isis_print_mtid(ndo, tptr, "\n\t ");
2513 if (mt_len == 0) /* did something go wrong ? */
2517 while (tmp >= 2+NODE_ID_LEN+3+1) {
2518 ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type);
2519 if (ext_is_len == 0) /* did something go wrong ? */
2527 case ISIS_TLV_IS_ALIAS_ID:
2528 while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */
2529 ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type);
2530 if (ext_is_len == 0) /* did something go wrong ? */
2537 case ISIS_TLV_EXT_IS_REACH:
2538 while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */
2539 ext_is_len = isis_print_ext_is_reach(ndo, tptr, "\n\t ", tlv_type);
2540 if (ext_is_len == 0) /* did something go wrong ? */
2546 case ISIS_TLV_IS_REACH:
2547 if (!ND_TTEST2(*tptr,1)) /* check if there is one byte left to read out the virtual flag */
2549 ND_PRINT((ndo, "\n\t %s",
2550 tok2str(isis_is_reach_virtual_values,
2551 "bogus virtual flag 0x%02x",
2553 tlv_is_reach = (const struct isis_tlv_is_reach *)tptr;
2554 while (tmp >= sizeof(struct isis_tlv_is_reach)) {
2555 if (!ND_TTEST(*tlv_is_reach))
2557 ND_PRINT((ndo, "\n\t IS Neighbor: %s",
2558 isis_print_id(tlv_is_reach->neighbor_nodeid, NODE_ID_LEN)));
2559 isis_print_metric_block(ndo, &tlv_is_reach->isis_metric_block);
2560 tmp -= sizeof(struct isis_tlv_is_reach);
2565 case ISIS_TLV_ESNEIGH:
2566 tlv_es_reach = (const struct isis_tlv_es_reach *)tptr;
2567 while (tmp >= sizeof(struct isis_tlv_es_reach)) {
2568 if (!ND_TTEST(*tlv_es_reach))
2570 ND_PRINT((ndo, "\n\t ES Neighbor: %s",
2571 isis_print_id(tlv_es_reach->neighbor_sysid, SYSTEM_ID_LEN)));
2572 isis_print_metric_block(ndo, &tlv_es_reach->isis_metric_block);
2573 tmp -= sizeof(struct isis_tlv_es_reach);
2578 /* those two TLVs share the same format */
2579 case ISIS_TLV_INT_IP_REACH:
2580 case ISIS_TLV_EXT_IP_REACH:
2581 if (!isis_print_tlv_ip_reach(ndo, pptr, "\n\t ", tlv_len))
2585 case ISIS_TLV_EXTD_IP_REACH:
2587 ext_ip_len = isis_print_extd_ip_reach(ndo, tptr, "\n\t ", AF_INET);
2588 if (ext_ip_len == 0) /* did something go wrong ? */
2595 case ISIS_TLV_MT_IP_REACH:
2596 mt_len = isis_print_mtid(ndo, tptr, "\n\t ");
2597 if (mt_len == 0) { /* did something go wrong ? */
2604 ext_ip_len = isis_print_extd_ip_reach(ndo, tptr, "\n\t ", AF_INET);
2605 if (ext_ip_len == 0) /* did something go wrong ? */
2613 case ISIS_TLV_IP6_REACH:
2615 ext_ip_len = isis_print_extd_ip_reach(ndo, tptr, "\n\t ", AF_INET6);
2616 if (ext_ip_len == 0) /* did something go wrong ? */
2623 case ISIS_TLV_MT_IP6_REACH:
2624 mt_len = isis_print_mtid(ndo, tptr, "\n\t ");
2625 if (mt_len == 0) { /* did something go wrong ? */
2632 ext_ip_len = isis_print_extd_ip_reach(ndo, tptr, "\n\t ", AF_INET6);
2633 if (ext_ip_len == 0) /* did something go wrong ? */
2640 case ISIS_TLV_IP6ADDR:
2641 while (tmp>=sizeof(struct in6_addr)) {
2642 if (!ND_TTEST2(*tptr, sizeof(struct in6_addr)))
2645 ND_PRINT((ndo, "\n\t IPv6 interface address: %s",
2646 ip6addr_string(ndo, tptr)));
2648 tptr += sizeof(struct in6_addr);
2649 tmp -= sizeof(struct in6_addr);
2654 if (!ND_TTEST2(*tptr, 1))
2657 ND_PRINT((ndo, "\n\t %s: ",
2658 tok2str(isis_subtlv_auth_values,
2659 "unknown Authentication type 0x%02x",
2663 case ISIS_SUBTLV_AUTH_SIMPLE:
2664 for(i=1;i<tlv_len;i++) {
2665 if (!ND_TTEST2(*(tptr + i), 1))
2667 ND_PRINT((ndo, "%c", *(tptr + i)));
2670 case ISIS_SUBTLV_AUTH_MD5:
2671 for(i=1;i<tlv_len;i++) {
2672 if (!ND_TTEST2(*(tptr + i), 1))
2674 ND_PRINT((ndo, "%02x", *(tptr + i)));
2676 if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1)
2677 ND_PRINT((ndo, ", (malformed subTLV) "));
2679 #ifdef HAVE_LIBCRYPTO
2680 sigcheck = signature_verify(ndo, optr, length,
2681 (unsigned char *)tptr + 1);
2683 sigcheck = CANT_CHECK_SIGNATURE;
2685 ND_PRINT((ndo, " (%s)", tok2str(signature_check_values, "Unknown", sigcheck)));
2688 case ISIS_SUBTLV_AUTH_GENERIC:
2689 key_id = EXTRACT_16BITS((tptr+1));
2690 ND_PRINT((ndo, "%u, password: ", key_id));
2691 for(i=1 + sizeof(uint16_t);i<tlv_len;i++) {
2692 if (!ND_TTEST2(*(tptr + i), 1))
2694 ND_PRINT((ndo, "%02x", *(tptr + i)));
2697 case ISIS_SUBTLV_AUTH_PRIVATE:
2699 if (!print_unknown_data(ndo, tptr + 1, "\n\t\t ", tlv_len - 1))
2705 case ISIS_TLV_PTP_ADJ:
2706 tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr;
2708 if (!ND_TTEST2(*tptr, 1))
2710 ND_PRINT((ndo, "\n\t Adjacency State: %s (%u)",
2711 tok2str(isis_ptp_adjancey_values, "unknown", *tptr),
2715 if(tmp>sizeof(tlv_ptp_adj->extd_local_circuit_id)) {
2716 if (!ND_TTEST2(tlv_ptp_adj->extd_local_circuit_id,
2717 sizeof(tlv_ptp_adj->extd_local_circuit_id)))
2719 ND_PRINT((ndo, "\n\t Extended Local circuit-ID: 0x%08x",
2720 EXTRACT_32BITS(tlv_ptp_adj->extd_local_circuit_id)));
2721 tmp-=sizeof(tlv_ptp_adj->extd_local_circuit_id);
2723 if(tmp>=SYSTEM_ID_LEN) {
2724 if (!ND_TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN))
2726 ND_PRINT((ndo, "\n\t Neighbor System-ID: %s",
2727 isis_print_id(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN)));
2730 if(tmp>=sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)) {
2731 if (!ND_TTEST2(tlv_ptp_adj->neighbor_extd_local_circuit_id,
2732 sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)))
2734 ND_PRINT((ndo, "\n\t Neighbor Extended Local circuit-ID: 0x%08x",
2735 EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id)));
2739 case ISIS_TLV_PROTOCOLS:
2740 ND_PRINT((ndo, "\n\t NLPID(s): "));
2742 if (!ND_TTEST2(*(tptr), 1))
2744 ND_PRINT((ndo, "%s (0x%02x)",
2745 tok2str(nlpid_values,
2749 if (tmp>1) /* further NPLIDs ? - put comma */
2750 ND_PRINT((ndo, ", "));
2756 case ISIS_TLV_MT_PORT_CAP:
2758 if (!ND_TTEST2(*(tptr), 2))
2761 ND_PRINT((ndo, "\n\t RES: %d, MTID(s): %d",
2762 (EXTRACT_16BITS (tptr) >> 12),
2763 (EXTRACT_16BITS (tptr) & 0x0fff)));
2769 isis_print_mt_port_cap_subtlv(ndo, tptr, tmp);
2774 case ISIS_TLV_MT_CAPABILITY:
2776 if (!ND_TTEST2(*(tptr), 2))
2779 ND_PRINT((ndo, "\n\t O: %d, RES: %d, MTID(s): %d",
2780 (EXTRACT_16BITS(tptr) >> 15) & 0x01,
2781 (EXTRACT_16BITS(tptr) >> 12) & 0x07,
2782 EXTRACT_16BITS(tptr) & 0x0fff));
2788 isis_print_mt_capability_subtlv(ndo, tptr, tmp);
2792 case ISIS_TLV_TE_ROUTER_ID:
2793 if (!ND_TTEST2(*pptr, sizeof(struct in_addr)))
2795 ND_PRINT((ndo, "\n\t Traffic Engineering Router ID: %s", ipaddr_string(ndo, pptr)));
2798 case ISIS_TLV_IPADDR:
2799 while (tmp>=sizeof(struct in_addr)) {
2800 if (!ND_TTEST2(*tptr, sizeof(struct in_addr)))
2802 ND_PRINT((ndo, "\n\t IPv4 interface address: %s", ipaddr_string(ndo, tptr)));
2803 tptr += sizeof(struct in_addr);
2804 tmp -= sizeof(struct in_addr);
2808 case ISIS_TLV_HOSTNAME:
2809 ND_PRINT((ndo, "\n\t Hostname: "));
2811 if (!ND_TTEST2(*tptr, 1))
2813 ND_PRINT((ndo, "%c", *tptr++));
2818 case ISIS_TLV_SHARED_RISK_GROUP:
2819 if (tmp < NODE_ID_LEN)
2821 if (!ND_TTEST2(*tptr, NODE_ID_LEN))
2823 ND_PRINT((ndo, "\n\t IS Neighbor: %s", isis_print_id(tptr, NODE_ID_LEN)));
2824 tptr+=(NODE_ID_LEN);
2829 if (!ND_TTEST2(*tptr, 1))
2831 ND_PRINT((ndo, ", Flags: [%s]", ISIS_MASK_TLV_SHARED_RISK_GROUP(*tptr++) ? "numbered" : "unnumbered"));
2834 if (tmp < sizeof(struct in_addr))
2836 if (!ND_TTEST2(*tptr, sizeof(struct in_addr)))
2838 ND_PRINT((ndo, "\n\t IPv4 interface address: %s", ipaddr_string(ndo, tptr)));
2839 tptr+=sizeof(struct in_addr);
2840 tmp-=sizeof(struct in_addr);
2842 if (tmp < sizeof(struct in_addr))
2844 if (!ND_TTEST2(*tptr, sizeof(struct in_addr)))
2846 ND_PRINT((ndo, "\n\t IPv4 neighbor address: %s", ipaddr_string(ndo, tptr)));
2847 tptr+=sizeof(struct in_addr);
2848 tmp-=sizeof(struct in_addr);
2851 if (!ND_TTEST2(*tptr, 4))
2853 ND_PRINT((ndo, "\n\t Link-ID: 0x%08x", EXTRACT_32BITS(tptr)));
2860 tlv_lsp = (const struct isis_tlv_lsp *)tptr;
2861 while(tmp>=sizeof(struct isis_tlv_lsp)) {
2862 if (!ND_TTEST((tlv_lsp->lsp_id)[LSP_ID_LEN-1]))
2864 ND_PRINT((ndo, "\n\t lsp-id: %s",
2865 isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN)));
2866 if (!ND_TTEST2(tlv_lsp->sequence_number, 4))
2868 ND_PRINT((ndo, ", seq: 0x%08x", EXTRACT_32BITS(tlv_lsp->sequence_number)));
2869 if (!ND_TTEST2(tlv_lsp->remaining_lifetime, 2))
2871 ND_PRINT((ndo, ", lifetime: %5ds", EXTRACT_16BITS(tlv_lsp->remaining_lifetime)));
2872 if (!ND_TTEST2(tlv_lsp->checksum, 2))
2874 ND_PRINT((ndo, ", chksum: 0x%04x", EXTRACT_16BITS(tlv_lsp->checksum)));
2875 tmp-=sizeof(struct isis_tlv_lsp);
2880 case ISIS_TLV_CHECKSUM:
2881 if (tmp < ISIS_TLV_CHECKSUM_MINLEN)
2883 if (!ND_TTEST2(*tptr, ISIS_TLV_CHECKSUM_MINLEN))
2885 ND_PRINT((ndo, "\n\t checksum: 0x%04x ", EXTRACT_16BITS(tptr)));
2886 /* do not attempt to verify the checksum if it is zero
2887 * most likely a HMAC-MD5 TLV is also present and
2888 * to avoid conflicts the checksum TLV is zeroed.
2889 * see rfc3358 for details
2891 osi_print_cksum(ndo, optr, EXTRACT_16BITS(tptr), tptr-optr, length);
2894 case ISIS_TLV_MT_SUPPORTED:
2895 if (tmp < ISIS_TLV_MT_SUPPORTED_MINLEN)
2898 /* length can only be a multiple of 2, otherwise there is
2899 something broken -> so decode down until length is 1 */
2901 mt_len = isis_print_mtid(ndo, tptr, "\n\t ");
2902 if (mt_len == 0) /* did something go wrong ? */
2907 ND_PRINT((ndo, "\n\t malformed MT-ID"));
2913 case ISIS_TLV_RESTART_SIGNALING:
2914 /* first attempt to decode the flags */
2915 if (tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN)
2917 if (!ND_TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_FLAGLEN))
2919 ND_PRINT((ndo, "\n\t Flags [%s]",
2920 bittok2str(isis_restart_flag_values, "none", *tptr)));
2921 tptr+=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2922 tmp-=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2924 /* is there anything other than the flags field? */
2928 if (tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN)
2930 if (!ND_TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN))
2933 ND_PRINT((ndo, ", Remaining holding time %us", EXTRACT_16BITS(tptr)));
2934 tptr+=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2935 tmp-=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2937 /* is there an additional sysid field present ?*/
2938 if (tmp == SYSTEM_ID_LEN) {
2939 if (!ND_TTEST2(*tptr, SYSTEM_ID_LEN))
2941 ND_PRINT((ndo, ", for %s", isis_print_id(tptr,SYSTEM_ID_LEN)));
2945 case ISIS_TLV_IDRP_INFO:
2946 if (tmp < ISIS_TLV_IDRP_INFO_MINLEN)
2948 if (!ND_TTEST2(*tptr, ISIS_TLV_IDRP_INFO_MINLEN))
2950 ND_PRINT((ndo, "\n\t Inter-Domain Information Type: %s",
2951 tok2str(isis_subtlv_idrp_values,
2955 case ISIS_SUBTLV_IDRP_ASN:
2956 if (!ND_TTEST2(*tptr, 2)) /* fetch AS number */
2958 ND_PRINT((ndo, "AS Number: %u", EXTRACT_16BITS(tptr)));
2960 case ISIS_SUBTLV_IDRP_LOCAL:
2961 case ISIS_SUBTLV_IDRP_RES:
2963 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_len - 1))
2969 case ISIS_TLV_LSP_BUFFERSIZE:
2970 if (tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN)
2972 if (!ND_TTEST2(*tptr, ISIS_TLV_LSP_BUFFERSIZE_MINLEN))
2974 ND_PRINT((ndo, "\n\t LSP Buffersize: %u", EXTRACT_16BITS(tptr)));
2977 case ISIS_TLV_PART_DIS:
2978 while (tmp >= SYSTEM_ID_LEN) {
2979 if (!ND_TTEST2(*tptr, SYSTEM_ID_LEN))
2981 ND_PRINT((ndo, "\n\t %s", isis_print_id(tptr, SYSTEM_ID_LEN)));
2982 tptr+=SYSTEM_ID_LEN;
2987 case ISIS_TLV_PREFIX_NEIGH:
2988 if (tmp < sizeof(struct isis_metric_block))
2990 if (!ND_TTEST2(*tptr, sizeof(struct isis_metric_block)))
2992 ND_PRINT((ndo, "\n\t Metric Block"));
2993 isis_print_metric_block(ndo, (const struct isis_metric_block *)tptr);
2994 tptr+=sizeof(struct isis_metric_block);
2995 tmp-=sizeof(struct isis_metric_block);
2998 if (!ND_TTEST2(*tptr, 1))
3000 prefix_len=*tptr++; /* read out prefix length in semioctets*/
3001 if (prefix_len < 2) {
3002 ND_PRINT((ndo, "\n\t\tAddress: prefix length %u < 2", prefix_len));
3006 if (tmp < prefix_len/2)
3008 if (!ND_TTEST2(*tptr, prefix_len / 2))
3010 ND_PRINT((ndo, "\n\t\tAddress: %s/%u",
3011 isonsap_string(tptr, prefix_len / 2), prefix_len * 4));
3017 case ISIS_TLV_IIH_SEQNR:
3018 if (tmp < ISIS_TLV_IIH_SEQNR_MINLEN)
3020 if (!ND_TTEST2(*tptr, ISIS_TLV_IIH_SEQNR_MINLEN)) /* check if four bytes are on the wire */
3022 ND_PRINT((ndo, "\n\t Sequence number: %u", EXTRACT_32BITS(tptr)));
3025 case ISIS_TLV_VENDOR_PRIVATE:
3026 if (tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN)
3028 if (!ND_TTEST2(*tptr, ISIS_TLV_VENDOR_PRIVATE_MINLEN)) /* check if enough byte for a full oui */
3030 vendor_id = EXTRACT_24BITS(tptr);
3031 ND_PRINT((ndo, "\n\t Vendor: %s (%u)",
3032 tok2str(oui_values, "Unknown", vendor_id),
3036 if (tmp > 0) /* hexdump the rest */
3037 if (!print_unknown_data(ndo, tptr, "\n\t\t", tmp))
3041 * FIXME those are the defined TLVs that lack a decoder
3042 * you are welcome to contribute code ;-)
3045 case ISIS_TLV_DECNET_PHASE4:
3046 case ISIS_TLV_LUCENT_PRIVATE:
3047 case ISIS_TLV_IPAUTH:
3048 case ISIS_TLV_NORTEL_PRIVATE1:
3049 case ISIS_TLV_NORTEL_PRIVATE2:
3052 if (ndo->ndo_vflag <= 1) {
3053 if (!print_unknown_data(ndo, pptr, "\n\t\t", tlv_len))
3058 /* do we want to see an additionally hexdump ? */
3059 if (ndo->ndo_vflag> 1) {
3060 if (!print_unknown_data(ndo, pptr, "\n\t ", tlv_len))
3065 packet_len -= tlv_len;
3068 if (packet_len != 0) {
3069 ND_PRINT((ndo, "\n\t %u straggler bytes", packet_len));
3074 ND_PRINT((ndo, "[|isis]"));
3078 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
3083 osi_print_cksum(netdissect_options *ndo,
3084 const uint8_t *pptr, uint16_t checksum,
3085 u_int checksum_offset, u_int length)
3087 uint16_t calculated_checksum;
3089 /* do not attempt to verify the checksum if it is zero */
3091 ND_PRINT((ndo, "(unverified)"));
3093 calculated_checksum = create_osi_cksum(pptr, checksum_offset, length);
3094 if (checksum == calculated_checksum) {
3095 ND_PRINT((ndo, " (correct)"));
3097 ND_PRINT((ndo, " (incorrect should be 0x%04x)", calculated_checksum));
3104 * c-style: whitesmith