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.
28 static const char rcsid[] _U_ =
29 "@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.165 2008-08-16 13:38:15 hannes Exp $ (LBL)";
36 #include <tcpdump-stdinc.h>
41 #include "interface.h"
42 #include "addrtoname.h"
43 #include "ethertype.h"
49 #include "signature.h"
52 * IS-IS is defined in ISO 10589. Look there for protocol definitions.
55 #define SYSTEM_ID_LEN ETHER_ADDR_LEN
56 #define NODE_ID_LEN SYSTEM_ID_LEN+1
57 #define LSP_ID_LEN SYSTEM_ID_LEN+2
59 #define ISIS_VERSION 1
60 #define ESIS_VERSION 1
61 #define CLNP_VERSION 1
63 #define ISIS_PDU_TYPE_MASK 0x1F
64 #define ESIS_PDU_TYPE_MASK 0x1F
65 #define CLNP_PDU_TYPE_MASK 0x1F
66 #define CLNP_FLAG_MASK 0xE0
67 #define ISIS_LAN_PRIORITY_MASK 0x7F
69 #define ISIS_PDU_L1_LAN_IIH 15
70 #define ISIS_PDU_L2_LAN_IIH 16
71 #define ISIS_PDU_PTP_IIH 17
72 #define ISIS_PDU_L1_LSP 18
73 #define ISIS_PDU_L2_LSP 20
74 #define ISIS_PDU_L1_CSNP 24
75 #define ISIS_PDU_L2_CSNP 25
76 #define ISIS_PDU_L1_PSNP 26
77 #define ISIS_PDU_L2_PSNP 27
79 static struct tok isis_pdu_values[] = {
80 { ISIS_PDU_L1_LAN_IIH, "L1 Lan IIH"},
81 { ISIS_PDU_L2_LAN_IIH, "L2 Lan IIH"},
82 { ISIS_PDU_PTP_IIH, "p2p IIH"},
83 { ISIS_PDU_L1_LSP, "L1 LSP"},
84 { ISIS_PDU_L2_LSP, "L2 LSP"},
85 { ISIS_PDU_L1_CSNP, "L1 CSNP"},
86 { ISIS_PDU_L2_CSNP, "L2 CSNP"},
87 { ISIS_PDU_L1_PSNP, "L1 PSNP"},
88 { ISIS_PDU_L2_PSNP, "L2 PSNP"},
93 * A TLV is a tuple of a type, length and a value and is normally used for
94 * encoding information in all sorts of places. This is an enumeration of
95 * the well known types.
97 * list taken from rfc3359 plus some memory from veterans ;-)
100 #define ISIS_TLV_AREA_ADDR 1 /* iso10589 */
101 #define ISIS_TLV_IS_REACH 2 /* iso10589 */
102 #define ISIS_TLV_ESNEIGH 3 /* iso10589 */
103 #define ISIS_TLV_PART_DIS 4 /* iso10589 */
104 #define ISIS_TLV_PREFIX_NEIGH 5 /* iso10589 */
105 #define ISIS_TLV_ISNEIGH 6 /* iso10589 */
106 #define ISIS_TLV_ISNEIGH_VARLEN 7 /* iso10589 */
107 #define ISIS_TLV_PADDING 8 /* iso10589 */
108 #define ISIS_TLV_LSP 9 /* iso10589 */
109 #define ISIS_TLV_AUTH 10 /* iso10589, rfc3567 */
110 #define ISIS_TLV_CHECKSUM 12 /* rfc3358 */
111 #define ISIS_TLV_CHECKSUM_MINLEN 2
112 #define ISIS_TLV_LSP_BUFFERSIZE 14 /* iso10589 rev2 */
113 #define ISIS_TLV_LSP_BUFFERSIZE_MINLEN 2
114 #define ISIS_TLV_EXT_IS_REACH 22 /* draft-ietf-isis-traffic-05 */
115 #define ISIS_TLV_IS_ALIAS_ID 24 /* draft-ietf-isis-ext-lsp-frags-02 */
116 #define ISIS_TLV_DECNET_PHASE4 42
117 #define ISIS_TLV_LUCENT_PRIVATE 66
118 #define ISIS_TLV_INT_IP_REACH 128 /* rfc1195, rfc2966 */
119 #define ISIS_TLV_PROTOCOLS 129 /* rfc1195 */
120 #define ISIS_TLV_EXT_IP_REACH 130 /* rfc1195, rfc2966 */
121 #define ISIS_TLV_IDRP_INFO 131 /* rfc1195 */
122 #define ISIS_TLV_IDRP_INFO_MINLEN 1
123 #define ISIS_TLV_IPADDR 132 /* rfc1195 */
124 #define ISIS_TLV_IPAUTH 133 /* rfc1195 */
125 #define ISIS_TLV_TE_ROUTER_ID 134 /* draft-ietf-isis-traffic-05 */
126 #define ISIS_TLV_EXTD_IP_REACH 135 /* draft-ietf-isis-traffic-05 */
127 #define ISIS_TLV_HOSTNAME 137 /* rfc2763 */
128 #define ISIS_TLV_SHARED_RISK_GROUP 138 /* draft-ietf-isis-gmpls-extensions */
129 #define ISIS_TLV_NORTEL_PRIVATE1 176
130 #define ISIS_TLV_NORTEL_PRIVATE2 177
131 #define ISIS_TLV_RESTART_SIGNALING 211 /* rfc3847 */
132 #define ISIS_TLV_RESTART_SIGNALING_FLAGLEN 1
133 #define ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN 2
134 #define ISIS_TLV_MT_IS_REACH 222 /* draft-ietf-isis-wg-multi-topology-05 */
135 #define ISIS_TLV_MT_SUPPORTED 229 /* draft-ietf-isis-wg-multi-topology-05 */
136 #define ISIS_TLV_MT_SUPPORTED_MINLEN 2
137 #define ISIS_TLV_IP6ADDR 232 /* draft-ietf-isis-ipv6-02 */
138 #define ISIS_TLV_MT_IP_REACH 235 /* draft-ietf-isis-wg-multi-topology-05 */
139 #define ISIS_TLV_IP6_REACH 236 /* draft-ietf-isis-ipv6-02 */
140 #define ISIS_TLV_MT_IP6_REACH 237 /* draft-ietf-isis-wg-multi-topology-05 */
141 #define ISIS_TLV_PTP_ADJ 240 /* rfc3373 */
142 #define ISIS_TLV_IIH_SEQNR 241 /* draft-shen-isis-iih-sequence-00 */
143 #define ISIS_TLV_IIH_SEQNR_MINLEN 4
144 #define ISIS_TLV_VENDOR_PRIVATE 250 /* draft-ietf-isis-experimental-tlv-01 */
145 #define ISIS_TLV_VENDOR_PRIVATE_MINLEN 3
147 static struct tok isis_tlv_values[] = {
148 { ISIS_TLV_AREA_ADDR, "Area address(es)"},
149 { ISIS_TLV_IS_REACH, "IS Reachability"},
150 { ISIS_TLV_ESNEIGH, "ES Neighbor(s)"},
151 { ISIS_TLV_PART_DIS, "Partition DIS"},
152 { ISIS_TLV_PREFIX_NEIGH, "Prefix Neighbors"},
153 { ISIS_TLV_ISNEIGH, "IS Neighbor(s)"},
154 { ISIS_TLV_ISNEIGH_VARLEN, "IS Neighbor(s) (variable length)"},
155 { ISIS_TLV_PADDING, "Padding"},
156 { ISIS_TLV_LSP, "LSP entries"},
157 { ISIS_TLV_AUTH, "Authentication"},
158 { ISIS_TLV_CHECKSUM, "Checksum"},
159 { ISIS_TLV_LSP_BUFFERSIZE, "LSP Buffersize"},
160 { ISIS_TLV_EXT_IS_REACH, "Extended IS Reachability"},
161 { ISIS_TLV_IS_ALIAS_ID, "IS Alias ID"},
162 { ISIS_TLV_DECNET_PHASE4, "DECnet Phase IV"},
163 { ISIS_TLV_LUCENT_PRIVATE, "Lucent Proprietary"},
164 { ISIS_TLV_INT_IP_REACH, "IPv4 Internal Reachability"},
165 { ISIS_TLV_PROTOCOLS, "Protocols supported"},
166 { ISIS_TLV_EXT_IP_REACH, "IPv4 External Reachability"},
167 { ISIS_TLV_IDRP_INFO, "Inter-Domain Information Type"},
168 { ISIS_TLV_IPADDR, "IPv4 Interface address(es)"},
169 { ISIS_TLV_IPAUTH, "IPv4 authentication (deprecated)"},
170 { ISIS_TLV_TE_ROUTER_ID, "Traffic Engineering Router ID"},
171 { ISIS_TLV_EXTD_IP_REACH, "Extended IPv4 Reachability"},
172 { ISIS_TLV_SHARED_RISK_GROUP, "Shared Risk Link Group"},
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 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 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 struct tok clnp_option_rfd_class_values[] = {
230 { 0x9, "Source Routeing"},
232 { 0xb, "PDU Discarded"},
233 { 0xc, "Reassembly"},
237 static 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 struct tok clnp_option_rfd_address_values[] = {
250 { 0x0, "Destination address unreachable"},
251 { 0x1, "Destination address unknown"},
255 static 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 struct tok clnp_option_rfd_lifetime_values[] = {
264 { 0x0, "Lifetime expired while data unit in transit"},
265 { 0x1, "Lifetime expired during reassembly"},
269 static 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 struct tok clnp_option_rfd_reassembly_values[] = {
279 { 0x0, "Reassembly interference"},
283 /* array of 16 error-classes */
284 static 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 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 struct tok clnp_option_sr_rr_values[] = {
322 static 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 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 static struct tok isis_ext_is_reach_subtlv_values[] = {
354 { ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP, "Administrative groups" },
355 { ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
356 { ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID, "Link Remote Identifier" },
357 { ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR, "IPv4 interface address" },
358 { ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR, "IPv4 neighbor address" },
359 { ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW, "Maximum link bandwidth" },
360 { ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW, "Reservable link bandwidth" },
361 { ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW, "Unreserved bandwidth" },
362 { ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC, "Traffic Engineering Metric" },
363 { ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE, "Link Attribute" },
364 { ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE, "Link Protection Type" },
365 { ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
366 { ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD, "Bandwidth Constraints (old)" },
367 { ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS, "Bandwidth Constraints" },
368 { 250, "Reserved for cisco specific extensions" },
369 { 251, "Reserved for cisco specific extensions" },
370 { 252, "Reserved for cisco specific extensions" },
371 { 253, "Reserved for cisco specific extensions" },
372 { 254, "Reserved for cisco specific extensions" },
373 { 255, "Reserved for future expansion" },
377 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32 1 /* draft-ietf-isis-admin-tags-01 */
378 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64 2 /* draft-ietf-isis-admin-tags-01 */
379 #define ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR 117 /* draft-ietf-isis-wg-multi-topology-05 */
381 static struct tok isis_ext_ip_reach_subtlv_values[] = {
382 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32, "32-Bit Administrative tag" },
383 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64, "64-Bit Administrative tag" },
384 { ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR, "Management Prefix Color" },
388 static struct tok isis_subtlv_link_attribute_values[] = {
389 { 0x01, "Local Protection Available" },
390 { 0x02, "Link excluded from local protection path" },
391 { 0x04, "Local maintenance required"},
395 #define ISIS_SUBTLV_AUTH_SIMPLE 1
396 #define ISIS_SUBTLV_AUTH_MD5 54
397 #define ISIS_SUBTLV_AUTH_MD5_LEN 16
398 #define ISIS_SUBTLV_AUTH_PRIVATE 255
400 static struct tok isis_subtlv_auth_values[] = {
401 { ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
402 { ISIS_SUBTLV_AUTH_MD5, "HMAC-MD5 password"},
403 { ISIS_SUBTLV_AUTH_PRIVATE, "Routing Domain private password"},
407 #define ISIS_SUBTLV_IDRP_RES 0
408 #define ISIS_SUBTLV_IDRP_LOCAL 1
409 #define ISIS_SUBTLV_IDRP_ASN 2
411 static struct tok isis_subtlv_idrp_values[] = {
412 { ISIS_SUBTLV_IDRP_RES, "Reserved"},
413 { ISIS_SUBTLV_IDRP_LOCAL, "Routing-Domain Specific"},
414 { ISIS_SUBTLV_IDRP_ASN, "AS Number Tag"},
418 #define CLNP_SEGMENT_PART 0x80
419 #define CLNP_MORE_SEGMENTS 0x40
420 #define CLNP_REQUEST_ER 0x20
422 static struct tok clnp_flag_values[] = {
423 { CLNP_SEGMENT_PART, "Segmentation permitted"},
424 { CLNP_MORE_SEGMENTS, "more Segments"},
425 { CLNP_REQUEST_ER, "request Error Report"},
429 #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
430 #define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3)
431 #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
432 #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
433 #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
434 #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
435 #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
436 #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
438 #define ISIS_MASK_MTID(x) ((x)&0x0fff)
439 #define ISIS_MASK_MTFLAGS(x) ((x)&0xf000)
441 static struct tok isis_mt_flag_values[] = {
442 { 0x4000, "sub-TLVs present"},
443 { 0x8000, "ATT bit set"},
447 #define ISIS_MASK_TLV_EXTD_IP_UPDOWN(x) ((x)&0x80)
448 #define ISIS_MASK_TLV_EXTD_IP_SUBTLV(x) ((x)&0x40)
450 #define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40)
451 #define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20)
453 #define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80)
454 #define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40)
455 #define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80)
456 #define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f)
458 #define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1)
460 static struct tok isis_mt_values[] = {
461 { 0, "IPv4 unicast"},
462 { 1, "In-Band Management"},
463 { 2, "IPv6 unicast"},
465 { 4095, "Development, Experimental or Proprietary"},
469 static struct tok isis_iih_circuit_type_values[] = {
470 { 1, "Level 1 only"},
471 { 2, "Level 2 only"},
472 { 3, "Level 1, Level 2"},
476 #define ISIS_LSP_TYPE_UNUSED0 0
477 #define ISIS_LSP_TYPE_LEVEL_1 1
478 #define ISIS_LSP_TYPE_UNUSED2 2
479 #define ISIS_LSP_TYPE_LEVEL_2 3
481 static struct tok isis_lsp_istype_values[] = {
482 { ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
483 { ISIS_LSP_TYPE_LEVEL_1, "L1 IS"},
484 { ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
485 { ISIS_LSP_TYPE_LEVEL_2, "L2 IS"},
490 * Katz's point to point adjacency TLV uses codes to tell us the state of
491 * the remote adjacency. Enumerate them.
494 #define ISIS_PTP_ADJ_UP 0
495 #define ISIS_PTP_ADJ_INIT 1
496 #define ISIS_PTP_ADJ_DOWN 2
498 static struct tok isis_ptp_adjancey_values[] = {
499 { ISIS_PTP_ADJ_UP, "Up" },
500 { ISIS_PTP_ADJ_INIT, "Initializing" },
501 { ISIS_PTP_ADJ_DOWN, "Down" },
505 struct isis_tlv_ptp_adj {
506 u_int8_t adjacency_state;
507 u_int8_t extd_local_circuit_id[4];
508 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
509 u_int8_t neighbor_extd_local_circuit_id[4];
512 static void osi_print_cksum(const u_int8_t *pptr, u_int16_t checksum,
513 u_int checksum_offset, u_int length);
514 static int clnp_print(const u_int8_t *, u_int);
515 static void esis_print(const u_int8_t *, u_int);
516 static int isis_print(const u_int8_t *, u_int);
518 struct isis_metric_block {
519 u_int8_t metric_default;
520 u_int8_t metric_delay;
521 u_int8_t metric_expense;
522 u_int8_t metric_error;
525 struct isis_tlv_is_reach {
526 struct isis_metric_block isis_metric_block;
527 u_int8_t neighbor_nodeid[NODE_ID_LEN];
530 struct isis_tlv_es_reach {
531 struct isis_metric_block isis_metric_block;
532 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
535 struct isis_tlv_ip_reach {
536 struct isis_metric_block isis_metric_block;
541 static struct tok isis_is_reach_virtual_values[] = {
542 { 0, "IsNotVirtual"},
547 static struct tok isis_restart_flag_values[] = {
548 { 0x1, "Restart Request"},
549 { 0x2, "Restart Acknowledgement"},
550 { 0x4, "Suppress adjacency advertisement"},
554 struct isis_common_header {
557 u_int8_t version; /* Protocol version */
559 u_int8_t pdu_type; /* 3 MSbits are reserved */
560 u_int8_t pdu_version; /* Packet format version */
565 struct isis_iih_lan_header {
566 u_int8_t circuit_type;
567 u_int8_t source_id[SYSTEM_ID_LEN];
568 u_int8_t holding_time[2];
571 u_int8_t lan_id[NODE_ID_LEN];
574 struct isis_iih_ptp_header {
575 u_int8_t circuit_type;
576 u_int8_t source_id[SYSTEM_ID_LEN];
577 u_int8_t holding_time[2];
582 struct isis_lsp_header {
584 u_int8_t remaining_lifetime[2];
585 u_int8_t lsp_id[LSP_ID_LEN];
586 u_int8_t sequence_number[4];
587 u_int8_t checksum[2];
591 struct isis_csnp_header {
593 u_int8_t source_id[NODE_ID_LEN];
594 u_int8_t start_lsp_id[LSP_ID_LEN];
595 u_int8_t end_lsp_id[LSP_ID_LEN];
598 struct isis_psnp_header {
600 u_int8_t source_id[NODE_ID_LEN];
603 struct isis_tlv_lsp {
604 u_int8_t remaining_lifetime[2];
605 u_int8_t lsp_id[LSP_ID_LEN];
606 u_int8_t sequence_number[4];
607 u_int8_t checksum[2];
610 #define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
611 #define ISIS_IIH_LAN_HEADER_SIZE (sizeof(struct isis_iih_lan_header))
612 #define ISIS_IIH_PTP_HEADER_SIZE (sizeof(struct isis_iih_ptp_header))
613 #define ISIS_LSP_HEADER_SIZE (sizeof(struct isis_lsp_header))
614 #define ISIS_CSNP_HEADER_SIZE (sizeof(struct isis_csnp_header))
615 #define ISIS_PSNP_HEADER_SIZE (sizeof(struct isis_psnp_header))
617 void isoclns_print(const u_int8_t *p, u_int length, u_int caplen)
619 const struct isis_common_header *header;
621 header = (const struct isis_common_header *)p;
623 if (caplen <= 1) { /* enough bytes on the wire ? */
629 printf("OSI NLPID %s (0x%02x): ",
630 tok2str(nlpid_values,"Unknown",*p),
636 if (!clnp_print(p, length))
637 print_unknown_data(p,"\n\t",caplen);
641 esis_print(p, length);
645 if (!isis_print(p, length))
646 print_unknown_data(p,"\n\t",caplen);
650 (void)printf("%slength: %u",
656 q933_print(p+1, length-1);
660 ip_print(gndo, p+1, length-1);
665 ip6_print(p+1, length-1);
670 ppp_print(p+1, length-1);
675 printf("OSI NLPID 0x%02x unknown",*p);
676 (void)printf("%slength: %u",
680 print_unknown_data(p,"\n\t",caplen);
685 #define CLNP_PDU_ER 1
686 #define CLNP_PDU_DT 28
687 #define CLNP_PDU_MD 29
688 #define CLNP_PDU_ERQ 30
689 #define CLNP_PDU_ERP 31
691 static struct tok clnp_pdu_values[] = {
692 { CLNP_PDU_ER, "Error Report"},
693 { CLNP_PDU_MD, "MD"},
694 { CLNP_PDU_DT, "Data"},
695 { CLNP_PDU_ERQ, "Echo Request"},
696 { CLNP_PDU_ERP, "Echo Response"},
700 struct clnp_header_t {
702 u_int8_t length_indicator;
704 u_int8_t lifetime; /* units of 500ms */
706 u_int8_t segment_length[2];
710 struct clnp_segment_header_t {
711 u_int8_t data_unit_id[2];
712 u_int8_t segment_offset[2];
713 u_int8_t total_length[2];
718 * Decode CLNP packets. Return 0 on error.
721 static int clnp_print (const u_int8_t *pptr, u_int length)
723 const u_int8_t *optr,*source_address,*dest_address;
724 u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags;
725 const struct clnp_header_t *clnp_header;
726 const struct clnp_segment_header_t *clnp_segment_header;
727 u_int8_t rfd_error_major,rfd_error_minor;
729 clnp_header = (const struct clnp_header_t *) pptr;
730 TCHECK(*clnp_header);
732 li = clnp_header->length_indicator;
739 * Sanity checking of the header.
742 if (clnp_header->version != CLNP_VERSION) {
743 printf("version %d packet not supported", clnp_header->version);
747 /* FIXME further header sanity checking */
749 clnp_pdu_type = clnp_header->type & CLNP_PDU_TYPE_MASK;
750 clnp_flags = clnp_header->type & CLNP_FLAG_MASK;
752 pptr += sizeof(struct clnp_header_t);
753 li -= sizeof(struct clnp_header_t);
754 dest_address_length = *pptr;
755 dest_address = pptr + 1;
757 pptr += (1 + dest_address_length);
758 li -= (1 + dest_address_length);
759 source_address_length = *pptr;
760 source_address = pptr +1;
762 pptr += (1 + source_address_length);
763 li -= (1 + source_address_length);
766 printf("%s%s > %s, %s, length %u",
768 isonsap_string(source_address, source_address_length),
769 isonsap_string(dest_address, dest_address_length),
770 tok2str(clnp_pdu_values,"unknown (%u)",clnp_pdu_type),
774 printf("%slength %u",eflag ? "" : ", ",length);
776 printf("\n\t%s PDU, hlen: %u, v: %u, lifetime: %u.%us, Segment PDU length: %u, checksum: 0x%04x",
777 tok2str(clnp_pdu_values, "unknown (%u)",clnp_pdu_type),
778 clnp_header->length_indicator,
779 clnp_header->version,
780 clnp_header->lifetime/2,
781 (clnp_header->lifetime%2)*5,
782 EXTRACT_16BITS(clnp_header->segment_length),
783 EXTRACT_16BITS(clnp_header->cksum));
785 osi_print_cksum(optr, EXTRACT_16BITS(clnp_header->cksum), 7,
786 clnp_header->length_indicator);
788 printf("\n\tFlags [%s]",
789 bittok2str(clnp_flag_values,"none",clnp_flags));
791 printf("\n\tsource address (length %u): %s\n\tdest address (length %u): %s",
792 source_address_length,
793 isonsap_string(source_address, source_address_length),
795 isonsap_string(dest_address,dest_address_length));
797 if (clnp_flags & CLNP_SEGMENT_PART) {
798 clnp_segment_header = (const struct clnp_segment_header_t *) pptr;
799 TCHECK(*clnp_segment_header);
800 printf("\n\tData Unit ID: 0x%04x, Segment Offset: %u, Total PDU Length: %u",
801 EXTRACT_16BITS(clnp_segment_header->data_unit_id),
802 EXTRACT_16BITS(clnp_segment_header->segment_offset),
803 EXTRACT_16BITS(clnp_segment_header->total_length));
804 pptr+=sizeof(const struct clnp_segment_header_t);
805 li-=sizeof(const struct clnp_segment_header_t);
808 /* now walk the options */
811 const u_int8_t *tptr;
815 printf(", bad opts/li");
821 TCHECK2(*pptr, opli);
823 printf(", opt (%d) too long", op);
830 printf("\n\t %s Option #%u, length %u, value: ",
831 tok2str(clnp_option_values,"Unknown",op),
838 case CLNP_OPTION_ROUTE_RECORDING: /* those two options share the format */
839 case CLNP_OPTION_SOURCE_ROUTING:
841 tok2str(clnp_option_sr_rr_values,"Unknown",*tptr),
842 tok2str(clnp_option_sr_rr_string_values,"Unknown Option %u",op));
843 nsap_offset=*(tptr+1);
844 if (nsap_offset == 0) {
845 printf(" Bad NSAP offset (0)");
848 nsap_offset-=1; /* offset to nsap list */
849 if (nsap_offset > tlen) {
850 printf(" Bad NSAP offset (past end of option)");
856 source_address_length=*tptr;
857 if (tlen < source_address_length+1) {
858 printf("\n\t NSAP address goes past end of option");
861 if (source_address_length > 0) {
862 source_address=(tptr+1);
863 TCHECK2(*source_address, source_address_length);
864 printf("\n\t NSAP address (length %u): %s",
865 source_address_length,
866 isonsap_string(source_address, source_address_length));
868 tlen-=source_address_length+1;
872 case CLNP_OPTION_PRIORITY:
873 printf("0x%1x", *tptr&0x0f);
876 case CLNP_OPTION_QOS_MAINTENANCE:
877 printf("\n\t Format Code: %s",
878 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK));
880 if ((*tptr&CLNP_OPTION_SCOPE_MASK) == CLNP_OPTION_SCOPE_GLOBAL)
881 printf("\n\t QoS Flags [%s]",
882 bittok2str(clnp_option_qos_global_values,
884 *tptr&CLNP_OPTION_OPTION_QOS_MASK));
887 case CLNP_OPTION_SECURITY:
888 printf("\n\t Format Code: %s, Security-Level %u",
889 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK),
893 case CLNP_OPTION_DISCARD_REASON:
894 rfd_error_major = (*tptr&0xf0) >> 4;
895 rfd_error_minor = *tptr&0x0f;
896 printf("\n\t Class: %s Error (0x%01x), %s (0x%01x)",
897 tok2str(clnp_option_rfd_class_values,"Unknown",rfd_error_major),
899 tok2str(clnp_option_rfd_error_class[rfd_error_major],"Unknown",rfd_error_minor),
903 case CLNP_OPTION_PADDING:
904 printf("padding data");
908 * FIXME those are the defined Options that lack a decoder
909 * you are welcome to contribute code ;-)
913 print_unknown_data(tptr,"\n\t ",opli);
917 print_unknown_data(pptr,"\n\t ",opli);
921 switch (clnp_pdu_type) {
923 case CLNP_PDU_ER: /* fall through */
926 if (*(pptr) == NLPID_CLNP) {
927 printf("\n\t-----original packet-----\n\t");
928 /* FIXME recursion protection */
929 clnp_print(pptr, length-clnp_header->length_indicator);
938 /* dump the PDU specific data */
939 if (length-(pptr-optr) > 0) {
940 printf("\n\t undecoded non-header data, length %u",length-clnp_header->length_indicator);
941 print_unknown_data(pptr,"\n\t ",length-(pptr-optr));
948 fputs("[|clnp]", stdout);
954 #define ESIS_PDU_REDIRECT 6
955 #define ESIS_PDU_ESH 2
956 #define ESIS_PDU_ISH 4
958 static struct tok esis_pdu_values[] = {
959 { ESIS_PDU_REDIRECT, "redirect"},
960 { ESIS_PDU_ESH, "ESH"},
961 { ESIS_PDU_ISH, "ISH"},
965 struct esis_header_t {
967 u_int8_t length_indicator;
971 u_int8_t holdtime[2];
976 esis_print(const u_int8_t *pptr, u_int length)
978 const u_int8_t *optr;
979 u_int li,esis_pdu_type,source_address_length, source_address_number;
980 const struct esis_header_t *esis_header;
989 printf("no header at all!");
993 esis_header = (const struct esis_header_t *) pptr;
994 TCHECK(*esis_header);
995 li = esis_header->length_indicator;
999 * Sanity checking of the header.
1002 if (esis_header->nlpid != NLPID_ESIS) {
1003 printf(" nlpid 0x%02x packet not supported", esis_header->nlpid);
1007 if (esis_header->version != ESIS_VERSION) {
1008 printf(" version %d packet not supported", esis_header->version);
1013 printf(" length indicator(%d) > PDU size (%d)!", li, length);
1017 if (li < sizeof(struct esis_header_t) + 2) {
1018 printf(" length indicator < min PDU size %d:", li);
1019 while (--length != 0)
1020 printf("%02X", *pptr++);
1024 esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK;
1027 printf("%s%s, length %u",
1029 tok2str(esis_pdu_values,"unknown type (%u)",esis_pdu_type),
1033 printf("%slength %u\n\t%s (%u)",
1036 tok2str(esis_pdu_values,"unknown type: %u", esis_pdu_type),
1039 printf(", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" );
1040 printf(", checksum: 0x%04x", EXTRACT_16BITS(esis_header->cksum));
1042 osi_print_cksum(pptr, EXTRACT_16BITS(esis_header->cksum), 7, li);
1044 printf(", holding time: %us, length indicator: %u",EXTRACT_16BITS(esis_header->holdtime),li);
1047 print_unknown_data(optr,"\n\t",sizeof(struct esis_header_t));
1049 pptr += sizeof(struct esis_header_t);
1050 li -= sizeof(struct esis_header_t);
1052 switch (esis_pdu_type) {
1053 case ESIS_PDU_REDIRECT: {
1054 const u_int8_t *dst, *snpa, *neta;
1055 u_int dstl, snpal, netal;
1059 printf(", bad redirect/li");
1065 TCHECK2(*pptr, dstl);
1067 printf(", bad redirect/li");
1073 printf("\n\t %s", isonsap_string(dst,dstl));
1077 printf(", bad redirect/li");
1083 TCHECK2(*pptr, snpal);
1085 printf(", bad redirect/li");
1093 printf(", bad redirect/li");
1098 TCHECK2(*pptr, netal);
1100 printf(", bad redirect/li");
1108 printf("\n\t %s", etheraddr_string(snpa));
1110 printf("\n\t %s", isonsap_string(neta,netal));
1117 printf(", bad esh/li");
1120 source_address_number = *pptr;
1124 printf("\n\t Number of Source Addresses: %u", source_address_number);
1126 while (source_address_number > 0) {
1129 printf(", bad esh/li");
1132 source_address_length = *pptr;
1136 TCHECK2(*pptr, source_address_length);
1137 if (li < source_address_length) {
1138 printf(", bad esh/li");
1141 printf("\n\t NET (length: %u): %s",
1142 source_address_length,
1143 isonsap_string(pptr,source_address_length));
1144 pptr += source_address_length;
1145 li -= source_address_length;
1146 source_address_number--;
1151 case ESIS_PDU_ISH: {
1154 printf(", bad ish/li");
1157 source_address_length = *pptr;
1160 TCHECK2(*pptr, source_address_length);
1161 if (li < source_address_length) {
1162 printf(", bad ish/li");
1165 printf("\n\t NET (length: %u): %s", source_address_length, isonsap_string(pptr, source_address_length));
1166 pptr += source_address_length;
1167 li -= source_address_length;
1174 print_unknown_data(pptr,"\n\t ",snapend-pptr);
1179 /* now walk the options */
1182 const u_int8_t *tptr;
1186 printf(", bad opts/li");
1193 printf(", opt (%d) too long", op);
1199 printf("\n\t %s Option #%u, length %u, value: ",
1200 tok2str(esis_option_values,"Unknown",op),
1206 case ESIS_OPTION_ES_CONF_TIME:
1208 printf("%us", EXTRACT_16BITS(tptr));
1211 case ESIS_OPTION_PROTOCOLS:
1214 printf("%s (0x%02x)",
1215 tok2str(nlpid_values,
1219 if (opli>1) /* further NPLIDs ? - put comma */
1227 * FIXME those are the defined Options that lack a decoder
1228 * you are welcome to contribute code ;-)
1231 case ESIS_OPTION_QOS_MAINTENANCE:
1232 case ESIS_OPTION_SECURITY:
1233 case ESIS_OPTION_PRIORITY:
1234 case ESIS_OPTION_ADDRESS_MASK:
1235 case ESIS_OPTION_SNPA_MASK:
1238 print_unknown_data(tptr,"\n\t ",opli);
1242 print_unknown_data(pptr,"\n\t ",opli);
1249 /* shared routine for printing system, node and lsp-ids */
1251 isis_print_id(const u_int8_t *cp, int id_len)
1254 static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")];
1257 for (i = 1; i <= SYSTEM_ID_LEN; i++) {
1258 snprintf(pos, sizeof(id) - (pos - id), "%02x", *cp++);
1260 if (i == 2 || i == 4)
1263 if (id_len >= NODE_ID_LEN) {
1264 snprintf(pos, sizeof(id) - (pos - id), ".%02x", *cp++);
1267 if (id_len == LSP_ID_LEN)
1268 snprintf(pos, sizeof(id) - (pos - id), "-%02x", *cp);
1272 /* print the 4-byte metric block which is common found in the old-style TLVs */
1274 isis_print_metric_block (const struct isis_metric_block *isis_metric_block)
1276 printf(", Default Metric: %d, %s",
1277 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
1278 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal");
1279 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
1280 printf("\n\t\t Delay Metric: %d, %s",
1281 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
1282 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal");
1283 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
1284 printf("\n\t\t Expense Metric: %d, %s",
1285 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
1286 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal");
1287 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
1288 printf("\n\t\t Error Metric: %d, %s",
1289 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
1290 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal");
1292 return(1); /* everything is ok */
1296 isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length)
1299 const struct isis_tlv_ip_reach *tlv_ip_reach;
1301 tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
1303 while (length > 0) {
1304 if ((size_t)length < sizeof(*tlv_ip_reach)) {
1305 printf("short IPv4 Reachability (%d vs %lu)",
1307 (unsigned long)sizeof(*tlv_ip_reach));
1311 if (!TTEST(*tlv_ip_reach))
1314 prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
1316 if (prefix_len == -1)
1317 printf("%sIPv4 prefix: %s mask %s",
1319 ipaddr_string((tlv_ip_reach->prefix)),
1320 ipaddr_string((tlv_ip_reach->mask)));
1322 printf("%sIPv4 prefix: %15s/%u",
1324 ipaddr_string((tlv_ip_reach->prefix)),
1327 printf(", Distribution: %s, Metric: %u, %s",
1328 ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
1329 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
1330 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal");
1332 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
1333 printf("%s Delay Metric: %u, %s",
1335 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
1336 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal");
1338 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
1339 printf("%s Expense Metric: %u, %s",
1341 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
1342 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal");
1344 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
1345 printf("%s Error Metric: %u, %s",
1347 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
1348 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal");
1350 length -= sizeof(struct isis_tlv_ip_reach);
1357 * this is the common IP-REACH subTLV decoder it is called
1358 * from various EXTD-IP REACH TLVs (135,235,236,237)
1362 isis_print_ip_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
1364 /* first lets see if we know the subTLVs name*/
1365 printf("%s%s subTLV #%u, length: %u",
1367 tok2str(isis_ext_ip_reach_subtlv_values,
1373 if (!TTEST2(*tptr,subl))
1377 case ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR: /* fall through */
1378 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32:
1380 printf(", 0x%08x (=%u)",
1381 EXTRACT_32BITS(tptr),
1382 EXTRACT_32BITS(tptr));
1387 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64:
1389 printf(", 0x%08x%08x",
1390 EXTRACT_32BITS(tptr),
1391 EXTRACT_32BITS(tptr+4));
1397 if(!print_unknown_data(tptr,"\n\t\t ",
1405 printf("%spacket exceeded snapshot",ident);
1410 * this is the common IS-REACH subTLV decoder it is called
1411 * from isis_print_ext_is_reach()
1415 isis_print_is_reach_subtlv (const u_int8_t *tptr,u_int subt,u_int subl,const char *ident) {
1417 u_int te_class,priority_level,gmpls_switch_cap;
1418 union { /* int to float conversion buffer for several subTLVs */
1423 /* first lets see if we know the subTLVs name*/
1424 printf("%s%s subTLV #%u, length: %u",
1426 tok2str(isis_ext_is_reach_subtlv_values,
1432 if (!TTEST2(*tptr,subl))
1436 case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
1437 case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
1438 case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
1440 printf(", 0x%08x", EXTRACT_32BITS(tptr));
1441 if (subl == 8) /* rfc4205 */
1442 printf(", 0x%08x", EXTRACT_32BITS(tptr+4));
1445 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
1446 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
1447 if (subl >= sizeof(struct in_addr))
1448 printf(", %s", ipaddr_string(tptr));
1450 case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
1451 case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
1453 bw.i = EXTRACT_32BITS(tptr);
1454 printf(", %.3f Mbps", bw.f*8/1000000 );
1457 case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
1459 for (te_class = 0; te_class < 8; te_class++) {
1460 bw.i = EXTRACT_32BITS(tptr);
1461 printf("%s TE-Class %u: %.3f Mbps",
1469 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */
1470 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD:
1471 printf("%sBandwidth Constraints Model ID: %s (%u)",
1473 tok2str(diffserv_te_bc_values, "unknown", *tptr),
1476 /* decode BCs until the subTLV ends */
1477 for (te_class = 0; te_class < (subl-1)/4; te_class++) {
1478 bw.i = EXTRACT_32BITS(tptr);
1479 printf("%s Bandwidth constraint CT%u: %.3f Mbps",
1486 case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC:
1488 printf(", %u", EXTRACT_24BITS(tptr));
1490 case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE:
1492 printf(", [ %s ] (0x%04x)",
1493 bittok2str(isis_subtlv_link_attribute_values,
1495 EXTRACT_16BITS(tptr)),
1496 EXTRACT_16BITS(tptr));
1499 case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
1501 printf(", %s, Priority %u",
1502 bittok2str(gmpls_link_prot_values, "none", *tptr),
1506 case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
1508 gmpls_switch_cap = *tptr;
1509 printf("%s Interface Switching Capability:%s",
1511 tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap));
1512 printf(", LSP Encoding: %s",
1513 tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
1515 printf("%s Max LSP Bandwidth:",ident);
1516 for (priority_level = 0; priority_level < 8; priority_level++) {
1517 bw.i = EXTRACT_32BITS(tptr);
1518 printf("%s priority level %d: %.3f Mbps",
1525 switch (gmpls_switch_cap) {
1530 bw.i = EXTRACT_32BITS(tptr);
1531 printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
1532 printf("%s Interface MTU: %u", ident, EXTRACT_16BITS(tptr+4));
1535 bw.i = EXTRACT_32BITS(tptr);
1536 printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
1537 printf("%s Indication %s", ident,
1538 tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", *(tptr+4)));
1541 /* there is some optional stuff left to decode but this is as of yet
1542 not specified so just lets hexdump what is left */
1544 if(!print_unknown_data(tptr,"\n\t\t ",
1552 if(!print_unknown_data(tptr,"\n\t\t ",
1560 printf("%spacket exceeded snapshot",ident);
1566 * this is the common IS-REACH decoder it is called
1567 * from various EXTD-IS REACH style TLVs (22,24,222)
1571 isis_print_ext_is_reach (const u_int8_t *tptr,const char *ident, int tlv_type) {
1573 char ident_buffer[20];
1574 int subtlv_type,subtlv_len,subtlv_sum_len;
1575 int proc_bytes = 0; /* how many bytes did we process ? */
1577 if (!TTEST2(*tptr, NODE_ID_LEN))
1580 printf("%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN));
1581 tptr+=(NODE_ID_LEN);
1583 if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */
1584 if (!TTEST2(*tptr, 3)) /* and is therefore skipped */
1586 printf(", Metric: %d",EXTRACT_24BITS(tptr));
1590 if (!TTEST2(*tptr, 1))
1592 subtlv_sum_len=*(tptr++); /* read out subTLV length */
1593 proc_bytes=NODE_ID_LEN+3+1;
1594 printf(", %ssub-TLVs present",subtlv_sum_len ? "" : "no ");
1595 if (subtlv_sum_len) {
1596 printf(" (%u)",subtlv_sum_len);
1597 while (subtlv_sum_len>0) {
1598 if (!TTEST2(*tptr,2))
1600 subtlv_type=*(tptr++);
1601 subtlv_len=*(tptr++);
1602 /* prepend the ident string */
1603 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1604 if(!isis_print_is_reach_subtlv(tptr,subtlv_type,subtlv_len,ident_buffer))
1607 subtlv_sum_len-=(subtlv_len+2);
1608 proc_bytes+=(subtlv_len+2);
1615 * this is the common Multi Topology ID decoder
1616 * it is called from various MT-TLVs (222,229,235,237)
1620 isis_print_mtid (const u_int8_t *tptr,const char *ident) {
1622 if (!TTEST2(*tptr, 2))
1627 tok2str(isis_mt_values,
1628 "Reserved for IETF Consensus",
1629 ISIS_MASK_MTID(EXTRACT_16BITS(tptr))));
1631 printf(" Topology (0x%03x), Flags: [%s]",
1632 ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
1633 bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr))));
1639 * this is the common extended IP reach decoder
1640 * it is called from TLVs (135,235,236,237)
1641 * we process the TLV and optional subTLVs and return
1642 * the amount of processed bytes
1646 isis_print_extd_ip_reach (const u_int8_t *tptr, const char *ident, u_int16_t afi) {
1648 char ident_buffer[20];
1650 u_int8_t prefix[sizeof(struct in6_addr)]; /* shared copy buffer for IPv4 and IPv6 prefixes */
1652 u_int8_t prefix[sizeof(struct in_addr)]; /* shared copy buffer for IPv4 prefixes */
1654 u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
1656 if (!TTEST2(*tptr, 4))
1658 metric = EXTRACT_32BITS(tptr);
1662 if (afi == AF_INET) {
1663 if (!TTEST2(*tptr, 1)) /* fetch status byte */
1665 status_byte=*(tptr++);
1666 bit_length = status_byte&0x3f;
1667 if (bit_length > 32) {
1668 printf("%sIPv4 prefix: bad bit length %u",
1675 } else if (afi == AF_INET6) {
1676 if (!TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
1678 status_byte=*(tptr++);
1679 bit_length=*(tptr++);
1680 if (bit_length > 128) {
1681 printf("%sIPv6 prefix: bad bit length %u",
1689 return (0); /* somebody is fooling us */
1691 byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
1693 if (!TTEST2(*tptr, byte_length))
1695 memset(prefix, 0, sizeof prefix); /* clear the copy buffer */
1696 memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
1698 processed+=byte_length;
1701 printf("%sIPv4 prefix: %15s/%u",
1703 ipaddr_string(prefix),
1706 if (afi == AF_INET6)
1707 printf("%sIPv6 prefix: %s/%u",
1709 ip6addr_string(prefix),
1713 printf(", Distribution: %s, Metric: %u",
1714 ISIS_MASK_TLV_EXTD_IP_UPDOWN(status_byte) ? "down" : "up",
1717 if (afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1718 printf(", sub-TLVs present");
1720 if (afi == AF_INET6)
1722 ISIS_MASK_TLV_EXTD_IP6_IE(status_byte) ? "External" : "Internal",
1723 ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : "");
1726 if ((afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1728 || (afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte))
1731 /* assume that one prefix can hold more
1732 than one subTLV - therefore the first byte must reflect
1733 the aggregate bytecount of the subTLVs for this prefix
1735 if (!TTEST2(*tptr, 1))
1738 processed+=sublen+1;
1739 printf(" (%u)",sublen); /* print out subTLV length */
1742 if (!TTEST2(*tptr,2))
1744 subtlvtype=*(tptr++);
1745 subtlvlen=*(tptr++);
1746 /* prepend the ident string */
1747 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1748 if(!isis_print_ip_reach_subtlv(tptr,subtlvtype,subtlvlen,ident_buffer))
1751 sublen-=(subtlvlen+2);
1759 * Decode IS-IS packets. Return 0 on error.
1762 static int isis_print (const u_int8_t *p, u_int length)
1764 const struct isis_common_header *isis_header;
1766 const struct isis_iih_lan_header *header_iih_lan;
1767 const struct isis_iih_ptp_header *header_iih_ptp;
1768 struct isis_lsp_header *header_lsp;
1769 const struct isis_csnp_header *header_csnp;
1770 const struct isis_psnp_header *header_psnp;
1772 const struct isis_tlv_lsp *tlv_lsp;
1773 const struct isis_tlv_ptp_adj *tlv_ptp_adj;
1774 const struct isis_tlv_is_reach *tlv_is_reach;
1775 const struct isis_tlv_es_reach *tlv_es_reach;
1777 u_int8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
1778 u_int8_t ext_is_len, ext_ip_len, mt_len;
1779 const u_int8_t *optr, *pptr, *tptr;
1780 u_short packet_len,pdu_len;
1785 optr = p; /* initialize the _o_riginal pointer to the packet start -
1786 need it for parsing the checksum TLV and authentication
1788 isis_header = (const struct isis_common_header *)p;
1789 TCHECK(*isis_header);
1790 pptr = p+(ISIS_COMMON_HEADER_SIZE);
1791 header_iih_lan = (const struct isis_iih_lan_header *)pptr;
1792 header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
1793 header_lsp = (struct isis_lsp_header *)pptr;
1794 header_csnp = (const struct isis_csnp_header *)pptr;
1795 header_psnp = (const struct isis_psnp_header *)pptr;
1801 * Sanity checking of the header.
1804 if (isis_header->version != ISIS_VERSION) {
1805 printf("version %d packet not supported", isis_header->version);
1809 if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) {
1810 printf("system ID length of %d is not supported",
1811 isis_header->id_length);
1815 if (isis_header->pdu_version != ISIS_VERSION) {
1816 printf("version %d packet not supported", isis_header->pdu_version);
1820 max_area = isis_header->max_area;
1823 max_area = 3; /* silly shit */
1826 printf("bad packet -- 255 areas");
1832 id_length = isis_header->id_length;
1835 id_length = 6; /* silly shit again */
1837 case 1: /* 1-8 are valid sys-ID lenghts */
1847 id_length = 0; /* entirely useless */
1853 /* toss any non 6-byte sys-ID len PDUs */
1854 if (id_length != 6 ) {
1855 printf("bad packet -- illegal sys-ID length (%u)", id_length);
1859 pdu_type=isis_header->pdu_type;
1861 /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
1865 tok2str(isis_pdu_values,"unknown PDU-Type %u",pdu_type));
1869 case ISIS_PDU_L1_LAN_IIH:
1870 case ISIS_PDU_L2_LAN_IIH:
1871 printf(", src-id %s",
1872 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN));
1873 printf(", lan-id %s, prio %u",
1874 isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN),
1875 header_iih_lan->priority);
1877 case ISIS_PDU_PTP_IIH:
1878 printf(", src-id %s", isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN));
1880 case ISIS_PDU_L1_LSP:
1881 case ISIS_PDU_L2_LSP:
1882 printf(", lsp-id %s, seq 0x%08x, lifetime %5us",
1883 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
1884 EXTRACT_32BITS(header_lsp->sequence_number),
1885 EXTRACT_16BITS(header_lsp->remaining_lifetime));
1887 case ISIS_PDU_L1_CSNP:
1888 case ISIS_PDU_L2_CSNP:
1889 printf(", src-id %s", isis_print_id(header_csnp->source_id,NODE_ID_LEN));
1891 case ISIS_PDU_L1_PSNP:
1892 case ISIS_PDU_L2_PSNP:
1893 printf(", src-id %s", isis_print_id(header_psnp->source_id,NODE_ID_LEN));
1897 printf(", length %u", length);
1902 /* ok they seem to want to know everything - lets fully decode it */
1903 printf("%slength %u", eflag ? "" : ", ",length);
1905 printf("\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
1906 tok2str(isis_pdu_values,
1909 isis_header->fixed_len,
1910 isis_header->version,
1911 isis_header->pdu_version,
1913 isis_header->id_length,
1915 isis_header->max_area);
1918 if(!print_unknown_data(optr,"\n\t",8)) /* provide the _o_riginal pointer */
1919 return(0); /* for optionally debugging the common header */
1924 case ISIS_PDU_L1_LAN_IIH:
1925 case ISIS_PDU_L2_LAN_IIH:
1926 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
1927 printf(", bogus fixed header length %u should be %lu",
1928 isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE);
1932 pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
1933 if (packet_len>pdu_len) {
1934 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1938 TCHECK(*header_iih_lan);
1939 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1940 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
1941 EXTRACT_16BITS(header_iih_lan->holding_time),
1942 tok2str(isis_iih_circuit_type_values,
1943 "unknown circuit type 0x%02x",
1944 header_iih_lan->circuit_type));
1946 printf("\n\t lan-id: %s, Priority: %u, PDU length: %u",
1947 isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
1948 (header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK,
1952 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_LAN_HEADER_SIZE))
1956 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1957 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1960 case ISIS_PDU_PTP_IIH:
1961 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
1962 printf(", bogus fixed header length %u should be %lu",
1963 isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE);
1967 pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
1968 if (packet_len>pdu_len) {
1969 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1973 TCHECK(*header_iih_ptp);
1974 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1975 isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
1976 EXTRACT_16BITS(header_iih_ptp->holding_time),
1977 tok2str(isis_iih_circuit_type_values,
1978 "unknown circuit type 0x%02x",
1979 header_iih_ptp->circuit_type));
1981 printf("\n\t circuit-id: 0x%02x, PDU length: %u",
1982 header_iih_ptp->circuit_id,
1986 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_PTP_HEADER_SIZE))
1990 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1991 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1994 case ISIS_PDU_L1_LSP:
1995 case ISIS_PDU_L2_LSP:
1996 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
1997 printf(", bogus fixed header length %u should be %lu",
1998 isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE);
2002 pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
2003 if (packet_len>pdu_len) {
2004 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2008 TCHECK(*header_lsp);
2009 printf("\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us\n\t chksum: 0x%04x",
2010 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
2011 EXTRACT_32BITS(header_lsp->sequence_number),
2012 EXTRACT_16BITS(header_lsp->remaining_lifetime),
2013 EXTRACT_16BITS(header_lsp->checksum));
2016 osi_print_cksum((u_int8_t *)header_lsp->lsp_id,
2017 EXTRACT_16BITS(header_lsp->checksum), 12, length-12);
2020 * Clear checksum and lifetime prior to signature verification.
2022 header_lsp->checksum[0] = 0;
2023 header_lsp->checksum[1] = 0;
2024 header_lsp->remaining_lifetime[0] = 0;
2025 header_lsp->remaining_lifetime[1] = 0;
2028 printf(", PDU length: %u, Flags: [ %s",
2030 ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : "");
2032 if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
2033 printf("%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : "");
2034 printf("%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : "");
2035 printf("%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : "");
2036 printf("%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : "");
2037 printf("ATT bit set, ");
2039 printf("%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : "");
2040 printf("%s ]", tok2str(isis_lsp_istype_values,"Unknown(0x%x)",ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock)));
2043 if(!print_unknown_data(pptr,"\n\t ",ISIS_LSP_HEADER_SIZE))
2047 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2048 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2051 case ISIS_PDU_L1_CSNP:
2052 case ISIS_PDU_L2_CSNP:
2053 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
2054 printf(", bogus fixed header length %u should be %lu",
2055 isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE);
2059 pdu_len=EXTRACT_16BITS(header_csnp->pdu_len);
2060 if (packet_len>pdu_len) {
2061 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2065 TCHECK(*header_csnp);
2066 printf("\n\t source-id: %s, PDU length: %u",
2067 isis_print_id(header_csnp->source_id, NODE_ID_LEN),
2069 printf("\n\t start lsp-id: %s",
2070 isis_print_id(header_csnp->start_lsp_id, LSP_ID_LEN));
2071 printf("\n\t end lsp-id: %s",
2072 isis_print_id(header_csnp->end_lsp_id, LSP_ID_LEN));
2075 if(!print_unknown_data(pptr,"\n\t ",ISIS_CSNP_HEADER_SIZE))
2079 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2080 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2083 case ISIS_PDU_L1_PSNP:
2084 case ISIS_PDU_L2_PSNP:
2085 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) {
2086 printf("- bogus fixed header length %u should be %lu",
2087 isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE);
2091 pdu_len=EXTRACT_16BITS(header_psnp->pdu_len);
2092 if (packet_len>pdu_len) {
2093 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2097 TCHECK(*header_psnp);
2098 printf("\n\t source-id: %s, PDU length: %u",
2099 isis_print_id(header_psnp->source_id, NODE_ID_LEN),
2103 if(!print_unknown_data(pptr,"\n\t ",ISIS_PSNP_HEADER_SIZE))
2107 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2108 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2112 if(!print_unknown_data(pptr,"\n\t ",length))
2118 * Now print the TLV's.
2121 while (packet_len >= 2) {
2122 if (pptr == snapend) {
2126 if (!TTEST2(*pptr, 2)) {
2127 printf("\n\t\t packet exceeded snapshot (%ld) bytes",
2128 (long)(pptr-snapend));
2133 tmp =tlv_len; /* copy temporary len & pointer to packet data */
2136 if (tlv_len > packet_len) {
2140 /* first lets see if we know the TLVs name*/
2141 printf("\n\t %s TLV #%u, length: %u",
2142 tok2str(isis_tlv_values,
2148 if (tlv_len == 0) /* something is malformed */
2151 /* now check if we have a decoder otherwise do a hexdump at the end*/
2153 case ISIS_TLV_AREA_ADDR:
2154 if (!TTEST2(*tptr, 1))
2157 while (tmp && alen < tmp) {
2158 printf("\n\t Area address (length: %u): %s",
2160 isonsap_string(tptr,alen));
2163 if (tmp==0) /* if this is the last area address do not attemt a boundary check */
2165 if (!TTEST2(*tptr, 1))
2170 case ISIS_TLV_ISNEIGH:
2171 while (tmp >= ETHER_ADDR_LEN) {
2172 if (!TTEST2(*tptr, ETHER_ADDR_LEN))
2174 printf("\n\t SNPA: %s",isis_print_id(tptr,ETHER_ADDR_LEN));
2175 tmp -= ETHER_ADDR_LEN;
2176 tptr += ETHER_ADDR_LEN;
2180 case ISIS_TLV_ISNEIGH_VARLEN:
2181 if (!TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */
2183 lan_alen = *tptr++; /* LAN address length */
2184 if (lan_alen == 0) {
2185 printf("\n\t LAN address length 0 bytes (invalid)");
2189 printf("\n\t LAN address length %u bytes ",lan_alen);
2190 while (tmp >= lan_alen) {
2191 if (!TTEST2(*tptr, lan_alen))
2193 printf("\n\t\tIS Neighbor: %s",isis_print_id(tptr,lan_alen));
2199 case ISIS_TLV_PADDING:
2202 case ISIS_TLV_MT_IS_REACH:
2203 mt_len = isis_print_mtid(tptr, "\n\t ");
2204 if (mt_len == 0) /* did something go wrong ? */
2208 while (tmp >= 2+NODE_ID_LEN+3+1) {
2209 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2210 if (ext_is_len == 0) /* did something go wrong ? */
2218 case ISIS_TLV_IS_ALIAS_ID:
2219 while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */
2220 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2221 if (ext_is_len == 0) /* did something go wrong ? */
2228 case ISIS_TLV_EXT_IS_REACH:
2229 while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */
2230 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2231 if (ext_is_len == 0) /* did something go wrong ? */
2237 case ISIS_TLV_IS_REACH:
2238 if (!TTEST2(*tptr,1)) /* check if there is one byte left to read out the virtual flag */
2241 tok2str(isis_is_reach_virtual_values,
2242 "bogus virtual flag 0x%02x",
2244 tlv_is_reach = (const struct isis_tlv_is_reach *)tptr;
2245 while (tmp >= sizeof(struct isis_tlv_is_reach)) {
2246 if (!TTEST(*tlv_is_reach))
2248 printf("\n\t IS Neighbor: %s",
2249 isis_print_id(tlv_is_reach->neighbor_nodeid, NODE_ID_LEN));
2250 isis_print_metric_block(&tlv_is_reach->isis_metric_block);
2251 tmp -= sizeof(struct isis_tlv_is_reach);
2256 case ISIS_TLV_ESNEIGH:
2257 tlv_es_reach = (const struct isis_tlv_es_reach *)tptr;
2258 while (tmp >= sizeof(struct isis_tlv_es_reach)) {
2259 if (!TTEST(*tlv_es_reach))
2261 printf("\n\t ES Neighbor: %s",
2262 isis_print_id(tlv_es_reach->neighbor_sysid,SYSTEM_ID_LEN));
2263 isis_print_metric_block(&tlv_es_reach->isis_metric_block);
2264 tmp -= sizeof(struct isis_tlv_es_reach);
2269 /* those two TLVs share the same format */
2270 case ISIS_TLV_INT_IP_REACH:
2271 case ISIS_TLV_EXT_IP_REACH:
2272 if (!isis_print_tlv_ip_reach(pptr, "\n\t ", tlv_len))
2276 case ISIS_TLV_EXTD_IP_REACH:
2278 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
2279 if (ext_ip_len == 0) /* did something go wrong ? */
2286 case ISIS_TLV_MT_IP_REACH:
2287 mt_len = isis_print_mtid(tptr, "\n\t ");
2288 if (mt_len == 0) { /* did something go wrong ? */
2295 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
2296 if (ext_ip_len == 0) /* did something go wrong ? */
2304 case ISIS_TLV_IP6_REACH:
2306 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
2307 if (ext_ip_len == 0) /* did something go wrong ? */
2314 case ISIS_TLV_MT_IP6_REACH:
2315 mt_len = isis_print_mtid(tptr, "\n\t ");
2316 if (mt_len == 0) { /* did something go wrong ? */
2323 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
2324 if (ext_ip_len == 0) /* did something go wrong ? */
2331 case ISIS_TLV_IP6ADDR:
2332 while (tmp>=sizeof(struct in6_addr)) {
2333 if (!TTEST2(*tptr, sizeof(struct in6_addr)))
2336 printf("\n\t IPv6 interface address: %s",
2337 ip6addr_string(tptr));
2339 tptr += sizeof(struct in6_addr);
2340 tmp -= sizeof(struct in6_addr);
2345 if (!TTEST2(*tptr, 1))
2349 tok2str(isis_subtlv_auth_values,
2350 "unknown Authentication type 0x%02x",
2354 case ISIS_SUBTLV_AUTH_SIMPLE:
2355 for(i=1;i<tlv_len;i++) {
2356 if (!TTEST2(*(tptr+i), 1))
2358 printf("%c",*(tptr+i));
2361 case ISIS_SUBTLV_AUTH_MD5:
2362 for(i=1;i<tlv_len;i++) {
2363 if (!TTEST2(*(tptr+i), 1))
2365 printf("%02x",*(tptr+i));
2367 if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1)
2368 printf(", (malformed subTLV) ");
2370 #ifdef HAVE_LIBCRYPTO
2371 sigcheck = signature_verify(optr, length,
2372 (unsigned char *)tptr + 1);
2374 sigcheck = CANT_CHECK_SIGNATURE;
2376 printf(" (%s)", tok2str(signature_check_values, "Unknown", sigcheck));
2379 case ISIS_SUBTLV_AUTH_PRIVATE:
2381 if(!print_unknown_data(tptr+1,"\n\t\t ",tlv_len-1))
2387 case ISIS_TLV_PTP_ADJ:
2388 tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr;
2390 if (!TTEST2(*tptr, 1))
2392 printf("\n\t Adjacency State: %s (%u)",
2393 tok2str(isis_ptp_adjancey_values, "unknown", *tptr),
2397 if(tmp>sizeof(tlv_ptp_adj->extd_local_circuit_id)) {
2398 if (!TTEST2(tlv_ptp_adj->extd_local_circuit_id,
2399 sizeof(tlv_ptp_adj->extd_local_circuit_id)))
2401 printf("\n\t Extended Local circuit-ID: 0x%08x",
2402 EXTRACT_32BITS(tlv_ptp_adj->extd_local_circuit_id));
2403 tmp-=sizeof(tlv_ptp_adj->extd_local_circuit_id);
2405 if(tmp>=SYSTEM_ID_LEN) {
2406 if (!TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN))
2408 printf("\n\t Neighbor System-ID: %s",
2409 isis_print_id(tlv_ptp_adj->neighbor_sysid,SYSTEM_ID_LEN));
2412 if(tmp>=sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)) {
2413 if (!TTEST2(tlv_ptp_adj->neighbor_extd_local_circuit_id,
2414 sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)))
2416 printf("\n\t Neighbor Extended Local circuit-ID: 0x%08x",
2417 EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id));
2421 case ISIS_TLV_PROTOCOLS:
2422 printf("\n\t NLPID(s): ");
2424 if (!TTEST2(*(tptr), 1))
2426 printf("%s (0x%02x)",
2427 tok2str(nlpid_values,
2431 if (tmp>1) /* further NPLIDs ? - put comma */
2438 case ISIS_TLV_TE_ROUTER_ID:
2439 if (!TTEST2(*pptr, sizeof(struct in_addr)))
2441 printf("\n\t Traffic Engineering Router ID: %s", ipaddr_string(pptr));
2444 case ISIS_TLV_IPADDR:
2445 while (tmp>=sizeof(struct in_addr)) {
2446 if (!TTEST2(*tptr, sizeof(struct in_addr)))
2448 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2449 tptr += sizeof(struct in_addr);
2450 tmp -= sizeof(struct in_addr);
2454 case ISIS_TLV_HOSTNAME:
2455 printf("\n\t Hostname: ");
2457 if (!TTEST2(*tptr, 1))
2459 printf("%c",*tptr++);
2464 case ISIS_TLV_SHARED_RISK_GROUP:
2465 if (tmp < NODE_ID_LEN)
2467 if (!TTEST2(*tptr, NODE_ID_LEN))
2469 printf("\n\t IS Neighbor: %s", isis_print_id(tptr, NODE_ID_LEN));
2470 tptr+=(NODE_ID_LEN);
2475 if (!TTEST2(*tptr, 1))
2477 printf(", Flags: [%s]", ISIS_MASK_TLV_SHARED_RISK_GROUP(*tptr++) ? "numbered" : "unnumbered");
2480 if (tmp < sizeof(struct in_addr))
2482 if (!TTEST2(*tptr,sizeof(struct in_addr)))
2484 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2485 tptr+=sizeof(struct in_addr);
2486 tmp-=sizeof(struct in_addr);
2488 if (tmp < sizeof(struct in_addr))
2490 if (!TTEST2(*tptr,sizeof(struct in_addr)))
2492 printf("\n\t IPv4 neighbor address: %s", ipaddr_string(tptr));
2493 tptr+=sizeof(struct in_addr);
2494 tmp-=sizeof(struct in_addr);
2497 if (!TTEST2(*tptr, 4))
2499 printf("\n\t Link-ID: 0x%08x", EXTRACT_32BITS(tptr));
2506 tlv_lsp = (const struct isis_tlv_lsp *)tptr;
2507 while(tmp>=sizeof(struct isis_tlv_lsp)) {
2508 if (!TTEST((tlv_lsp->lsp_id)[LSP_ID_LEN-1]))
2510 printf("\n\t lsp-id: %s",
2511 isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN));
2512 if (!TTEST2(tlv_lsp->sequence_number, 4))
2514 printf(", seq: 0x%08x",EXTRACT_32BITS(tlv_lsp->sequence_number));
2515 if (!TTEST2(tlv_lsp->remaining_lifetime, 2))
2517 printf(", lifetime: %5ds",EXTRACT_16BITS(tlv_lsp->remaining_lifetime));
2518 if (!TTEST2(tlv_lsp->checksum, 2))
2520 printf(", chksum: 0x%04x",EXTRACT_16BITS(tlv_lsp->checksum));
2521 tmp-=sizeof(struct isis_tlv_lsp);
2526 case ISIS_TLV_CHECKSUM:
2527 if (tmp < ISIS_TLV_CHECKSUM_MINLEN)
2529 if (!TTEST2(*tptr, ISIS_TLV_CHECKSUM_MINLEN))
2531 printf("\n\t checksum: 0x%04x ", EXTRACT_16BITS(tptr));
2532 /* do not attempt to verify the checksum if it is zero
2533 * most likely a HMAC-MD5 TLV is also present and
2534 * to avoid conflicts the checksum TLV is zeroed.
2535 * see rfc3358 for details
2537 osi_print_cksum(optr, EXTRACT_16BITS(tptr), tptr-optr, length);
2540 case ISIS_TLV_MT_SUPPORTED:
2541 if (tmp < ISIS_TLV_MT_SUPPORTED_MINLEN)
2544 /* length can only be a multiple of 2, otherwise there is
2545 something broken -> so decode down until length is 1 */
2547 mt_len = isis_print_mtid(tptr, "\n\t ");
2548 if (mt_len == 0) /* did something go wrong ? */
2553 printf("\n\t malformed MT-ID");
2559 case ISIS_TLV_RESTART_SIGNALING:
2560 /* first attempt to decode the flags */
2561 if (tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN)
2563 if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_FLAGLEN))
2565 printf("\n\t Flags [%s]",
2566 bittok2str(isis_restart_flag_values, "none", *tptr));
2567 tptr+=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2568 tmp-=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2570 /* is there anything other than the flags field? */
2574 if (tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN)
2576 if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN))
2579 printf(", Remaining holding time %us", EXTRACT_16BITS(tptr));
2580 tptr+=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2581 tmp-=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2583 /* is there an additional sysid field present ?*/
2584 if (tmp == SYSTEM_ID_LEN) {
2585 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2587 printf(", for %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2591 case ISIS_TLV_IDRP_INFO:
2592 if (tmp < ISIS_TLV_IDRP_INFO_MINLEN)
2594 if (!TTEST2(*tptr, ISIS_TLV_IDRP_INFO_MINLEN))
2596 printf("\n\t Inter-Domain Information Type: %s",
2597 tok2str(isis_subtlv_idrp_values,
2601 case ISIS_SUBTLV_IDRP_ASN:
2602 if (!TTEST2(*tptr, 2)) /* fetch AS number */
2604 printf("AS Number: %u",EXTRACT_16BITS(tptr));
2606 case ISIS_SUBTLV_IDRP_LOCAL:
2607 case ISIS_SUBTLV_IDRP_RES:
2609 if(!print_unknown_data(tptr,"\n\t ",tlv_len-1))
2615 case ISIS_TLV_LSP_BUFFERSIZE:
2616 if (tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN)
2618 if (!TTEST2(*tptr, ISIS_TLV_LSP_BUFFERSIZE_MINLEN))
2620 printf("\n\t LSP Buffersize: %u",EXTRACT_16BITS(tptr));
2623 case ISIS_TLV_PART_DIS:
2624 while (tmp >= SYSTEM_ID_LEN) {
2625 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2627 printf("\n\t %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2628 tptr+=SYSTEM_ID_LEN;
2633 case ISIS_TLV_PREFIX_NEIGH:
2634 if (tmp < sizeof(struct isis_metric_block))
2636 if (!TTEST2(*tptr, sizeof(struct isis_metric_block)))
2638 printf("\n\t Metric Block");
2639 isis_print_metric_block((const struct isis_metric_block *)tptr);
2640 tptr+=sizeof(struct isis_metric_block);
2641 tmp-=sizeof(struct isis_metric_block);
2644 if (!TTEST2(*tptr, 1))
2646 prefix_len=*tptr++; /* read out prefix length in semioctets*/
2647 if (prefix_len < 2) {
2648 printf("\n\t\tAddress: prefix length %u < 2", prefix_len);
2652 if (tmp < prefix_len/2)
2654 if (!TTEST2(*tptr, prefix_len/2))
2656 printf("\n\t\tAddress: %s/%u",
2657 isonsap_string(tptr,prefix_len/2),
2664 case ISIS_TLV_IIH_SEQNR:
2665 if (tmp < ISIS_TLV_IIH_SEQNR_MINLEN)
2667 if (!TTEST2(*tptr, ISIS_TLV_IIH_SEQNR_MINLEN)) /* check if four bytes are on the wire */
2669 printf("\n\t Sequence number: %u", EXTRACT_32BITS(tptr) );
2672 case ISIS_TLV_VENDOR_PRIVATE:
2673 if (tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN)
2675 if (!TTEST2(*tptr, ISIS_TLV_VENDOR_PRIVATE_MINLEN)) /* check if enough byte for a full oui */
2677 vendor_id = EXTRACT_24BITS(tptr);
2678 printf("\n\t Vendor: %s (%u)",
2679 tok2str(oui_values,"Unknown",vendor_id),
2683 if (tmp > 0) /* hexdump the rest */
2684 if(!print_unknown_data(tptr,"\n\t\t",tmp))
2688 * FIXME those are the defined TLVs that lack a decoder
2689 * you are welcome to contribute code ;-)
2692 case ISIS_TLV_DECNET_PHASE4:
2693 case ISIS_TLV_LUCENT_PRIVATE:
2694 case ISIS_TLV_IPAUTH:
2695 case ISIS_TLV_NORTEL_PRIVATE1:
2696 case ISIS_TLV_NORTEL_PRIVATE2:
2700 if(!print_unknown_data(pptr,"\n\t\t",tlv_len))
2705 /* do we want to see an additionally hexdump ? */
2707 if(!print_unknown_data(pptr,"\n\t ",tlv_len))
2712 packet_len -= tlv_len;
2715 if (packet_len != 0) {
2716 printf("\n\t %u straggler bytes", packet_len);
2721 fputs("[|isis]", stdout);
2725 printf("\n\t\t packet exceeded snapshot");
2730 osi_print_cksum (const u_int8_t *pptr, u_int16_t checksum,
2731 u_int checksum_offset, u_int length)
2733 u_int16_t calculated_checksum;
2735 /* do not attempt to verify the checksum if it is zero */
2737 printf("(unverified)");
2739 calculated_checksum = create_osi_cksum(pptr, checksum_offset, length);
2740 if (checksum == calculated_checksum) {
2741 printf(" (correct)");
2743 printf(" (incorrect should be 0x%04x)", calculated_checksum);
2750 * c-style: whitesmith