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.
30 static const char rcsid[] _U_ =
31 "@(#) $Header: /tcpdump/master/tcpdump/print-isoclns.c,v 1.165 2008-08-16 13:38:15 hannes Exp $ (LBL)";
38 #include <tcpdump-stdinc.h>
43 #include "interface.h"
44 #include "addrtoname.h"
45 #include "ethertype.h"
51 #include "signature.h"
54 * IS-IS is defined in ISO 10589. Look there for protocol definitions.
57 #define SYSTEM_ID_LEN ETHER_ADDR_LEN
58 #define NODE_ID_LEN SYSTEM_ID_LEN+1
59 #define LSP_ID_LEN SYSTEM_ID_LEN+2
61 #define ISIS_VERSION 1
62 #define ESIS_VERSION 1
63 #define CLNP_VERSION 1
65 #define ISIS_PDU_TYPE_MASK 0x1F
66 #define ESIS_PDU_TYPE_MASK 0x1F
67 #define CLNP_PDU_TYPE_MASK 0x1F
68 #define CLNP_FLAG_MASK 0xE0
69 #define ISIS_LAN_PRIORITY_MASK 0x7F
71 #define ISIS_PDU_L1_LAN_IIH 15
72 #define ISIS_PDU_L2_LAN_IIH 16
73 #define ISIS_PDU_PTP_IIH 17
74 #define ISIS_PDU_L1_LSP 18
75 #define ISIS_PDU_L2_LSP 20
76 #define ISIS_PDU_L1_CSNP 24
77 #define ISIS_PDU_L2_CSNP 25
78 #define ISIS_PDU_L1_PSNP 26
79 #define ISIS_PDU_L2_PSNP 27
81 static struct tok isis_pdu_values[] = {
82 { ISIS_PDU_L1_LAN_IIH, "L1 Lan IIH"},
83 { ISIS_PDU_L2_LAN_IIH, "L2 Lan IIH"},
84 { ISIS_PDU_PTP_IIH, "p2p IIH"},
85 { ISIS_PDU_L1_LSP, "L1 LSP"},
86 { ISIS_PDU_L2_LSP, "L2 LSP"},
87 { ISIS_PDU_L1_CSNP, "L1 CSNP"},
88 { ISIS_PDU_L2_CSNP, "L2 CSNP"},
89 { ISIS_PDU_L1_PSNP, "L1 PSNP"},
90 { ISIS_PDU_L2_PSNP, "L2 PSNP"},
95 * A TLV is a tuple of a type, length and a value and is normally used for
96 * encoding information in all sorts of places. This is an enumeration of
97 * the well known types.
99 * list taken from rfc3359 plus some memory from veterans ;-)
102 #define ISIS_TLV_AREA_ADDR 1 /* iso10589 */
103 #define ISIS_TLV_IS_REACH 2 /* iso10589 */
104 #define ISIS_TLV_ESNEIGH 3 /* iso10589 */
105 #define ISIS_TLV_PART_DIS 4 /* iso10589 */
106 #define ISIS_TLV_PREFIX_NEIGH 5 /* iso10589 */
107 #define ISIS_TLV_ISNEIGH 6 /* iso10589 */
108 #define ISIS_TLV_ISNEIGH_VARLEN 7 /* iso10589 */
109 #define ISIS_TLV_PADDING 8 /* iso10589 */
110 #define ISIS_TLV_LSP 9 /* iso10589 */
111 #define ISIS_TLV_AUTH 10 /* iso10589, rfc3567 */
112 #define ISIS_TLV_CHECKSUM 12 /* rfc3358 */
113 #define ISIS_TLV_CHECKSUM_MINLEN 2
114 #define ISIS_TLV_LSP_BUFFERSIZE 14 /* iso10589 rev2 */
115 #define ISIS_TLV_LSP_BUFFERSIZE_MINLEN 2
116 #define ISIS_TLV_EXT_IS_REACH 22 /* draft-ietf-isis-traffic-05 */
117 #define ISIS_TLV_IS_ALIAS_ID 24 /* draft-ietf-isis-ext-lsp-frags-02 */
118 #define ISIS_TLV_DECNET_PHASE4 42
119 #define ISIS_TLV_LUCENT_PRIVATE 66
120 #define ISIS_TLV_INT_IP_REACH 128 /* rfc1195, rfc2966 */
121 #define ISIS_TLV_PROTOCOLS 129 /* rfc1195 */
122 #define ISIS_TLV_EXT_IP_REACH 130 /* rfc1195, rfc2966 */
123 #define ISIS_TLV_IDRP_INFO 131 /* rfc1195 */
124 #define ISIS_TLV_IDRP_INFO_MINLEN 1
125 #define ISIS_TLV_IPADDR 132 /* rfc1195 */
126 #define ISIS_TLV_IPAUTH 133 /* rfc1195 */
127 #define ISIS_TLV_TE_ROUTER_ID 134 /* draft-ietf-isis-traffic-05 */
128 #define ISIS_TLV_EXTD_IP_REACH 135 /* draft-ietf-isis-traffic-05 */
129 #define ISIS_TLV_HOSTNAME 137 /* rfc2763 */
130 #define ISIS_TLV_SHARED_RISK_GROUP 138 /* draft-ietf-isis-gmpls-extensions */
131 #define ISIS_TLV_NORTEL_PRIVATE1 176
132 #define ISIS_TLV_NORTEL_PRIVATE2 177
133 #define ISIS_TLV_RESTART_SIGNALING 211 /* rfc3847 */
134 #define ISIS_TLV_RESTART_SIGNALING_FLAGLEN 1
135 #define ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN 2
136 #define ISIS_TLV_MT_IS_REACH 222 /* draft-ietf-isis-wg-multi-topology-05 */
137 #define ISIS_TLV_MT_SUPPORTED 229 /* draft-ietf-isis-wg-multi-topology-05 */
138 #define ISIS_TLV_MT_SUPPORTED_MINLEN 2
139 #define ISIS_TLV_IP6ADDR 232 /* draft-ietf-isis-ipv6-02 */
140 #define ISIS_TLV_MT_IP_REACH 235 /* draft-ietf-isis-wg-multi-topology-05 */
141 #define ISIS_TLV_IP6_REACH 236 /* draft-ietf-isis-ipv6-02 */
142 #define ISIS_TLV_MT_IP6_REACH 237 /* draft-ietf-isis-wg-multi-topology-05 */
143 #define ISIS_TLV_PTP_ADJ 240 /* rfc3373 */
144 #define ISIS_TLV_IIH_SEQNR 241 /* draft-shen-isis-iih-sequence-00 */
145 #define ISIS_TLV_IIH_SEQNR_MINLEN 4
146 #define ISIS_TLV_VENDOR_PRIVATE 250 /* draft-ietf-isis-experimental-tlv-01 */
147 #define ISIS_TLV_VENDOR_PRIVATE_MINLEN 3
149 static struct tok isis_tlv_values[] = {
150 { ISIS_TLV_AREA_ADDR, "Area address(es)"},
151 { ISIS_TLV_IS_REACH, "IS Reachability"},
152 { ISIS_TLV_ESNEIGH, "ES Neighbor(s)"},
153 { ISIS_TLV_PART_DIS, "Partition DIS"},
154 { ISIS_TLV_PREFIX_NEIGH, "Prefix Neighbors"},
155 { ISIS_TLV_ISNEIGH, "IS Neighbor(s)"},
156 { ISIS_TLV_ISNEIGH_VARLEN, "IS Neighbor(s) (variable length)"},
157 { ISIS_TLV_PADDING, "Padding"},
158 { ISIS_TLV_LSP, "LSP entries"},
159 { ISIS_TLV_AUTH, "Authentication"},
160 { ISIS_TLV_CHECKSUM, "Checksum"},
161 { ISIS_TLV_LSP_BUFFERSIZE, "LSP Buffersize"},
162 { ISIS_TLV_EXT_IS_REACH, "Extended IS Reachability"},
163 { ISIS_TLV_IS_ALIAS_ID, "IS Alias ID"},
164 { ISIS_TLV_DECNET_PHASE4, "DECnet Phase IV"},
165 { ISIS_TLV_LUCENT_PRIVATE, "Lucent Proprietary"},
166 { ISIS_TLV_INT_IP_REACH, "IPv4 Internal Reachability"},
167 { ISIS_TLV_PROTOCOLS, "Protocols supported"},
168 { ISIS_TLV_EXT_IP_REACH, "IPv4 External Reachability"},
169 { ISIS_TLV_IDRP_INFO, "Inter-Domain Information Type"},
170 { ISIS_TLV_IPADDR, "IPv4 Interface address(es)"},
171 { ISIS_TLV_IPAUTH, "IPv4 authentication (deprecated)"},
172 { ISIS_TLV_TE_ROUTER_ID, "Traffic Engineering Router ID"},
173 { ISIS_TLV_EXTD_IP_REACH, "Extended IPv4 Reachability"},
174 { ISIS_TLV_SHARED_RISK_GROUP, "Shared Risk Link Group"},
175 { ISIS_TLV_NORTEL_PRIVATE1, "Nortel Proprietary"},
176 { ISIS_TLV_NORTEL_PRIVATE2, "Nortel Proprietary"},
177 { ISIS_TLV_HOSTNAME, "Hostname"},
178 { ISIS_TLV_RESTART_SIGNALING, "Restart Signaling"},
179 { ISIS_TLV_MT_IS_REACH, "Multi Topology IS Reachability"},
180 { ISIS_TLV_MT_SUPPORTED, "Multi Topology"},
181 { ISIS_TLV_IP6ADDR, "IPv6 Interface address(es)"},
182 { ISIS_TLV_MT_IP_REACH, "Multi-Topology IPv4 Reachability"},
183 { ISIS_TLV_IP6_REACH, "IPv6 reachability"},
184 { ISIS_TLV_MT_IP6_REACH, "Multi-Topology IP6 Reachability"},
185 { ISIS_TLV_PTP_ADJ, "Point-to-point Adjacency State"},
186 { ISIS_TLV_IIH_SEQNR, "Hello PDU Sequence Number"},
187 { ISIS_TLV_VENDOR_PRIVATE, "Vendor Private"},
191 #define ESIS_OPTION_PROTOCOLS 129
192 #define ESIS_OPTION_QOS_MAINTENANCE 195 /* iso9542 */
193 #define ESIS_OPTION_SECURITY 197 /* iso9542 */
194 #define ESIS_OPTION_ES_CONF_TIME 198 /* iso9542 */
195 #define ESIS_OPTION_PRIORITY 205 /* iso9542 */
196 #define ESIS_OPTION_ADDRESS_MASK 225 /* iso9542 */
197 #define ESIS_OPTION_SNPA_MASK 226 /* iso9542 */
199 static struct tok esis_option_values[] = {
200 { ESIS_OPTION_PROTOCOLS, "Protocols supported"},
201 { ESIS_OPTION_QOS_MAINTENANCE, "QoS Maintenance" },
202 { ESIS_OPTION_SECURITY, "Security" },
203 { ESIS_OPTION_ES_CONF_TIME, "ES Configuration Time" },
204 { ESIS_OPTION_PRIORITY, "Priority" },
205 { ESIS_OPTION_ADDRESS_MASK, "Addressk Mask" },
206 { ESIS_OPTION_SNPA_MASK, "SNPA Mask" },
210 #define CLNP_OPTION_DISCARD_REASON 193
211 #define CLNP_OPTION_QOS_MAINTENANCE 195 /* iso8473 */
212 #define CLNP_OPTION_SECURITY 197 /* iso8473 */
213 #define CLNP_OPTION_SOURCE_ROUTING 200 /* iso8473 */
214 #define CLNP_OPTION_ROUTE_RECORDING 203 /* iso8473 */
215 #define CLNP_OPTION_PADDING 204 /* iso8473 */
216 #define CLNP_OPTION_PRIORITY 205 /* iso8473 */
218 static struct tok clnp_option_values[] = {
219 { CLNP_OPTION_DISCARD_REASON, "Discard Reason"},
220 { CLNP_OPTION_PRIORITY, "Priority"},
221 { CLNP_OPTION_QOS_MAINTENANCE, "QoS Maintenance"},
222 { CLNP_OPTION_SECURITY, "Security"},
223 { CLNP_OPTION_SOURCE_ROUTING, "Source Routing"},
224 { CLNP_OPTION_ROUTE_RECORDING, "Route Recording"},
225 { CLNP_OPTION_PADDING, "Padding"},
229 static struct tok clnp_option_rfd_class_values[] = {
232 { 0x9, "Source Routeing"},
234 { 0xb, "PDU Discarded"},
235 { 0xc, "Reassembly"},
239 static struct tok clnp_option_rfd_general_values[] = {
240 { 0x0, "Reason not specified"},
241 { 0x1, "Protocol procedure error"},
242 { 0x2, "Incorrect checksum"},
243 { 0x3, "PDU discarded due to congestion"},
244 { 0x4, "Header syntax error (cannot be parsed)"},
245 { 0x5, "Segmentation needed but not permitted"},
246 { 0x6, "Incomplete PDU received"},
247 { 0x7, "Duplicate option"},
251 static struct tok clnp_option_rfd_address_values[] = {
252 { 0x0, "Destination address unreachable"},
253 { 0x1, "Destination address unknown"},
257 static struct tok clnp_option_rfd_source_routeing_values[] = {
258 { 0x0, "Unspecified source routeing error"},
259 { 0x1, "Syntax error in source routeing field"},
260 { 0x2, "Unknown address in source routeing field"},
261 { 0x3, "Path not acceptable"},
265 static struct tok clnp_option_rfd_lifetime_values[] = {
266 { 0x0, "Lifetime expired while data unit in transit"},
267 { 0x1, "Lifetime expired during reassembly"},
271 static struct tok clnp_option_rfd_pdu_discard_values[] = {
272 { 0x0, "Unsupported option not specified"},
273 { 0x1, "Unsupported protocol version"},
274 { 0x2, "Unsupported security option"},
275 { 0x3, "Unsupported source routeing option"},
276 { 0x4, "Unsupported recording of route option"},
280 static struct tok clnp_option_rfd_reassembly_values[] = {
281 { 0x0, "Reassembly interference"},
285 /* array of 16 error-classes */
286 static struct tok *clnp_option_rfd_error_class[] = {
287 clnp_option_rfd_general_values,
295 clnp_option_rfd_address_values,
296 clnp_option_rfd_source_routeing_values,
297 clnp_option_rfd_lifetime_values,
298 clnp_option_rfd_pdu_discard_values,
299 clnp_option_rfd_reassembly_values,
305 #define CLNP_OPTION_OPTION_QOS_MASK 0x3f
306 #define CLNP_OPTION_SCOPE_MASK 0xc0
307 #define CLNP_OPTION_SCOPE_SA_SPEC 0x40
308 #define CLNP_OPTION_SCOPE_DA_SPEC 0x80
309 #define CLNP_OPTION_SCOPE_GLOBAL 0xc0
311 static struct tok clnp_option_scope_values[] = {
312 { CLNP_OPTION_SCOPE_SA_SPEC, "Source Address Specific"},
313 { CLNP_OPTION_SCOPE_DA_SPEC, "Destination Address Specific"},
314 { CLNP_OPTION_SCOPE_GLOBAL, "Globally unique"},
318 static struct tok clnp_option_sr_rr_values[] = {
324 static struct tok clnp_option_sr_rr_string_values[] = {
325 { CLNP_OPTION_SOURCE_ROUTING, "source routing"},
326 { CLNP_OPTION_ROUTE_RECORDING, "recording of route in progress"},
330 static struct tok clnp_option_qos_global_values[] = {
332 { 0x10, "sequencing vs. delay"},
333 { 0x08, "congested"},
334 { 0x04, "delay vs. cost"},
335 { 0x02, "error vs. delay"},
336 { 0x01, "error vs. cost"},
340 #define ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP 3 /* draft-ietf-isis-traffic-05 */
341 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID 4 /* rfc4205 */
342 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID 5 /* draft-ietf-isis-traffic-05 */
343 #define ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR 6 /* draft-ietf-isis-traffic-05 */
344 #define ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR 8 /* draft-ietf-isis-traffic-05 */
345 #define ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW 9 /* draft-ietf-isis-traffic-05 */
346 #define ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW 10 /* draft-ietf-isis-traffic-05 */
347 #define ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW 11 /* rfc4124 */
348 #define ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD 12 /* draft-ietf-tewg-diff-te-proto-06 */
349 #define ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC 18 /* draft-ietf-isis-traffic-05 */
350 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE 19 /* draft-ietf-isis-link-attr-01 */
351 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE 20 /* rfc4205 */
352 #define ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR 21 /* rfc4205 */
353 #define ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS 22 /* rfc4124 */
355 static 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 { 250, "Reserved for cisco specific extensions" },
371 { 251, "Reserved for cisco specific extensions" },
372 { 252, "Reserved for cisco specific extensions" },
373 { 253, "Reserved for cisco specific extensions" },
374 { 254, "Reserved for cisco specific extensions" },
375 { 255, "Reserved for future expansion" },
379 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32 1 /* draft-ietf-isis-admin-tags-01 */
380 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64 2 /* draft-ietf-isis-admin-tags-01 */
381 #define ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR 117 /* draft-ietf-isis-wg-multi-topology-05 */
383 static struct tok isis_ext_ip_reach_subtlv_values[] = {
384 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32, "32-Bit Administrative tag" },
385 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64, "64-Bit Administrative tag" },
386 { ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR, "Management Prefix Color" },
390 static struct tok isis_subtlv_link_attribute_values[] = {
391 { 0x01, "Local Protection Available" },
392 { 0x02, "Link excluded from local protection path" },
393 { 0x04, "Local maintenance required"},
397 #define ISIS_SUBTLV_AUTH_SIMPLE 1
398 #define ISIS_SUBTLV_AUTH_GENERIC 3 /* rfc 5310 */
399 #define ISIS_SUBTLV_AUTH_MD5 54
400 #define ISIS_SUBTLV_AUTH_MD5_LEN 16
401 #define ISIS_SUBTLV_AUTH_PRIVATE 255
403 static struct tok isis_subtlv_auth_values[] = {
404 { ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
405 { ISIS_SUBTLV_AUTH_GENERIC, "Generic Crypto key-id"},
406 { ISIS_SUBTLV_AUTH_MD5, "HMAC-MD5 password"},
407 { ISIS_SUBTLV_AUTH_PRIVATE, "Routing Domain private password"},
411 #define ISIS_SUBTLV_IDRP_RES 0
412 #define ISIS_SUBTLV_IDRP_LOCAL 1
413 #define ISIS_SUBTLV_IDRP_ASN 2
415 static struct tok isis_subtlv_idrp_values[] = {
416 { ISIS_SUBTLV_IDRP_RES, "Reserved"},
417 { ISIS_SUBTLV_IDRP_LOCAL, "Routing-Domain Specific"},
418 { ISIS_SUBTLV_IDRP_ASN, "AS Number Tag"},
422 #define CLNP_SEGMENT_PART 0x80
423 #define CLNP_MORE_SEGMENTS 0x40
424 #define CLNP_REQUEST_ER 0x20
426 static struct tok clnp_flag_values[] = {
427 { CLNP_SEGMENT_PART, "Segmentation permitted"},
428 { CLNP_MORE_SEGMENTS, "more Segments"},
429 { CLNP_REQUEST_ER, "request Error Report"},
433 #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
434 #define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3)
435 #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
436 #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
437 #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
438 #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
439 #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
440 #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
442 #define ISIS_MASK_MTID(x) ((x)&0x0fff)
443 #define ISIS_MASK_MTFLAGS(x) ((x)&0xf000)
445 static struct tok isis_mt_flag_values[] = {
446 { 0x4000, "ATT bit set"},
447 { 0x8000, "Overload bit set"},
451 #define ISIS_MASK_TLV_EXTD_IP_UPDOWN(x) ((x)&0x80)
452 #define ISIS_MASK_TLV_EXTD_IP_SUBTLV(x) ((x)&0x40)
454 #define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40)
455 #define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20)
457 #define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80)
458 #define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40)
459 #define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80)
460 #define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f)
462 #define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1)
464 static struct tok isis_mt_values[] = {
465 { 0, "IPv4 unicast"},
466 { 1, "In-Band Management"},
467 { 2, "IPv6 unicast"},
469 { 4095, "Development, Experimental or Proprietary"},
473 static struct tok isis_iih_circuit_type_values[] = {
474 { 1, "Level 1 only"},
475 { 2, "Level 2 only"},
476 { 3, "Level 1, Level 2"},
480 #define ISIS_LSP_TYPE_UNUSED0 0
481 #define ISIS_LSP_TYPE_LEVEL_1 1
482 #define ISIS_LSP_TYPE_UNUSED2 2
483 #define ISIS_LSP_TYPE_LEVEL_2 3
485 static struct tok isis_lsp_istype_values[] = {
486 { ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
487 { ISIS_LSP_TYPE_LEVEL_1, "L1 IS"},
488 { ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
489 { ISIS_LSP_TYPE_LEVEL_2, "L2 IS"},
494 * Katz's point to point adjacency TLV uses codes to tell us the state of
495 * the remote adjacency. Enumerate them.
498 #define ISIS_PTP_ADJ_UP 0
499 #define ISIS_PTP_ADJ_INIT 1
500 #define ISIS_PTP_ADJ_DOWN 2
502 static struct tok isis_ptp_adjancey_values[] = {
503 { ISIS_PTP_ADJ_UP, "Up" },
504 { ISIS_PTP_ADJ_INIT, "Initializing" },
505 { ISIS_PTP_ADJ_DOWN, "Down" },
509 struct isis_tlv_ptp_adj {
510 u_int8_t adjacency_state;
511 u_int8_t extd_local_circuit_id[4];
512 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
513 u_int8_t neighbor_extd_local_circuit_id[4];
516 static void osi_print_cksum(const u_int8_t *pptr, u_int16_t checksum,
517 u_int checksum_offset, u_int length);
518 static int clnp_print(const u_int8_t *, u_int);
519 static void esis_print(const u_int8_t *, u_int);
520 static int isis_print(const u_int8_t *, u_int);
522 struct isis_metric_block {
523 u_int8_t metric_default;
524 u_int8_t metric_delay;
525 u_int8_t metric_expense;
526 u_int8_t metric_error;
529 struct isis_tlv_is_reach {
530 struct isis_metric_block isis_metric_block;
531 u_int8_t neighbor_nodeid[NODE_ID_LEN];
534 struct isis_tlv_es_reach {
535 struct isis_metric_block isis_metric_block;
536 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
539 struct isis_tlv_ip_reach {
540 struct isis_metric_block isis_metric_block;
545 static struct tok isis_is_reach_virtual_values[] = {
546 { 0, "IsNotVirtual"},
551 static struct tok isis_restart_flag_values[] = {
552 { 0x1, "Restart Request"},
553 { 0x2, "Restart Acknowledgement"},
554 { 0x4, "Suppress adjacency advertisement"},
558 struct isis_common_header {
561 u_int8_t version; /* Protocol version */
563 u_int8_t pdu_type; /* 3 MSbits are reserved */
564 u_int8_t pdu_version; /* Packet format version */
569 struct isis_iih_lan_header {
570 u_int8_t circuit_type;
571 u_int8_t source_id[SYSTEM_ID_LEN];
572 u_int8_t holding_time[2];
575 u_int8_t lan_id[NODE_ID_LEN];
578 struct isis_iih_ptp_header {
579 u_int8_t circuit_type;
580 u_int8_t source_id[SYSTEM_ID_LEN];
581 u_int8_t holding_time[2];
586 struct isis_lsp_header {
588 u_int8_t remaining_lifetime[2];
589 u_int8_t lsp_id[LSP_ID_LEN];
590 u_int8_t sequence_number[4];
591 u_int8_t checksum[2];
595 struct isis_csnp_header {
597 u_int8_t source_id[NODE_ID_LEN];
598 u_int8_t start_lsp_id[LSP_ID_LEN];
599 u_int8_t end_lsp_id[LSP_ID_LEN];
602 struct isis_psnp_header {
604 u_int8_t source_id[NODE_ID_LEN];
607 struct isis_tlv_lsp {
608 u_int8_t remaining_lifetime[2];
609 u_int8_t lsp_id[LSP_ID_LEN];
610 u_int8_t sequence_number[4];
611 u_int8_t checksum[2];
614 #define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
615 #define ISIS_IIH_LAN_HEADER_SIZE (sizeof(struct isis_iih_lan_header))
616 #define ISIS_IIH_PTP_HEADER_SIZE (sizeof(struct isis_iih_ptp_header))
617 #define ISIS_LSP_HEADER_SIZE (sizeof(struct isis_lsp_header))
618 #define ISIS_CSNP_HEADER_SIZE (sizeof(struct isis_csnp_header))
619 #define ISIS_PSNP_HEADER_SIZE (sizeof(struct isis_psnp_header))
621 void isoclns_print(const u_int8_t *p, u_int length, u_int caplen)
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(gndo, 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;
1185 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:
1209 printf("%us", EXTRACT_16BITS(tptr));
1211 printf("(bad length)");
1214 case ESIS_OPTION_PROTOCOLS:
1217 printf("%s (0x%02x)",
1218 tok2str(nlpid_values,
1222 if (opli>1) /* further NPLIDs ? - put comma */
1230 * FIXME those are the defined Options that lack a decoder
1231 * you are welcome to contribute code ;-)
1234 case ESIS_OPTION_QOS_MAINTENANCE:
1235 case ESIS_OPTION_SECURITY:
1236 case ESIS_OPTION_PRIORITY:
1237 case ESIS_OPTION_ADDRESS_MASK:
1238 case ESIS_OPTION_SNPA_MASK:
1241 print_unknown_data(tptr,"\n\t ",opli);
1245 print_unknown_data(pptr,"\n\t ",opli);
1252 /* shared routine for printing system, node and lsp-ids */
1254 isis_print_id(const u_int8_t *cp, int id_len)
1257 static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")];
1260 for (i = 1; i <= SYSTEM_ID_LEN; i++) {
1261 snprintf(pos, sizeof(id) - (pos - id), "%02x", *cp++);
1263 if (i == 2 || i == 4)
1266 if (id_len >= NODE_ID_LEN) {
1267 snprintf(pos, sizeof(id) - (pos - id), ".%02x", *cp++);
1270 if (id_len == LSP_ID_LEN)
1271 snprintf(pos, sizeof(id) - (pos - id), "-%02x", *cp);
1275 /* print the 4-byte metric block which is common found in the old-style TLVs */
1277 isis_print_metric_block (const struct isis_metric_block *isis_metric_block)
1279 printf(", Default Metric: %d, %s",
1280 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
1281 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal");
1282 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
1283 printf("\n\t\t Delay Metric: %d, %s",
1284 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
1285 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal");
1286 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
1287 printf("\n\t\t Expense Metric: %d, %s",
1288 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
1289 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal");
1290 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
1291 printf("\n\t\t Error Metric: %d, %s",
1292 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
1293 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal");
1295 return(1); /* everything is ok */
1299 isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length)
1302 const struct isis_tlv_ip_reach *tlv_ip_reach;
1304 tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
1306 while (length > 0) {
1307 if ((size_t)length < sizeof(*tlv_ip_reach)) {
1308 printf("short IPv4 Reachability (%d vs %lu)",
1310 (unsigned long)sizeof(*tlv_ip_reach));
1314 if (!TTEST(*tlv_ip_reach))
1317 prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
1319 if (prefix_len == -1)
1320 printf("%sIPv4 prefix: %s mask %s",
1322 ipaddr_string((tlv_ip_reach->prefix)),
1323 ipaddr_string((tlv_ip_reach->mask)));
1325 printf("%sIPv4 prefix: %15s/%u",
1327 ipaddr_string((tlv_ip_reach->prefix)),
1330 printf(", Distribution: %s, Metric: %u, %s",
1331 ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
1332 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
1333 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal");
1335 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
1336 printf("%s Delay Metric: %u, %s",
1338 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
1339 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal");
1341 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
1342 printf("%s Expense Metric: %u, %s",
1344 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
1345 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal");
1347 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
1348 printf("%s Error Metric: %u, %s",
1350 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
1351 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal");
1353 length -= sizeof(struct isis_tlv_ip_reach);
1360 * this is the common IP-REACH subTLV decoder it is called
1361 * from various EXTD-IP REACH TLVs (135,235,236,237)
1365 isis_print_ip_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
1367 /* first lets see if we know the subTLVs name*/
1368 printf("%s%s subTLV #%u, length: %u",
1370 tok2str(isis_ext_ip_reach_subtlv_values,
1376 if (!TTEST2(*tptr,subl))
1380 case ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR: /* fall through */
1381 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32:
1383 printf(", 0x%08x (=%u)",
1384 EXTRACT_32BITS(tptr),
1385 EXTRACT_32BITS(tptr));
1390 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64:
1392 printf(", 0x%08x%08x",
1393 EXTRACT_32BITS(tptr),
1394 EXTRACT_32BITS(tptr+4));
1400 if(!print_unknown_data(tptr,"\n\t\t ",
1408 printf("%spacket exceeded snapshot",ident);
1413 * this is the common IS-REACH subTLV decoder it is called
1414 * from isis_print_ext_is_reach()
1418 isis_print_is_reach_subtlv (const u_int8_t *tptr,u_int subt,u_int subl,const char *ident) {
1420 u_int te_class,priority_level,gmpls_switch_cap;
1421 union { /* int to float conversion buffer for several subTLVs */
1426 /* first lets see if we know the subTLVs name*/
1427 printf("%s%s subTLV #%u, length: %u",
1429 tok2str(isis_ext_is_reach_subtlv_values,
1435 if (!TTEST2(*tptr,subl))
1439 case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
1440 case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
1441 case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
1443 printf(", 0x%08x", EXTRACT_32BITS(tptr));
1444 if (subl == 8) /* rfc4205 */
1445 printf(", 0x%08x", EXTRACT_32BITS(tptr+4));
1448 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
1449 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
1450 if (subl >= sizeof(struct in_addr))
1451 printf(", %s", ipaddr_string(tptr));
1453 case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
1454 case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
1456 bw.i = EXTRACT_32BITS(tptr);
1457 printf(", %.3f Mbps", bw.f*8/1000000 );
1460 case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
1462 for (te_class = 0; te_class < 8; te_class++) {
1463 bw.i = EXTRACT_32BITS(tptr);
1464 printf("%s TE-Class %u: %.3f Mbps",
1472 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */
1473 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD:
1474 printf("%sBandwidth Constraints Model ID: %s (%u)",
1476 tok2str(diffserv_te_bc_values, "unknown", *tptr),
1479 /* decode BCs until the subTLV ends */
1480 for (te_class = 0; te_class < (subl-1)/4; te_class++) {
1481 bw.i = EXTRACT_32BITS(tptr);
1482 printf("%s Bandwidth constraint CT%u: %.3f Mbps",
1489 case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC:
1491 printf(", %u", EXTRACT_24BITS(tptr));
1493 case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE:
1495 printf(", [ %s ] (0x%04x)",
1496 bittok2str(isis_subtlv_link_attribute_values,
1498 EXTRACT_16BITS(tptr)),
1499 EXTRACT_16BITS(tptr));
1502 case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
1504 printf(", %s, Priority %u",
1505 bittok2str(gmpls_link_prot_values, "none", *tptr),
1509 case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
1511 gmpls_switch_cap = *tptr;
1512 printf("%s Interface Switching Capability:%s",
1514 tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap));
1515 printf(", LSP Encoding: %s",
1516 tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
1518 printf("%s Max LSP Bandwidth:",ident);
1519 for (priority_level = 0; priority_level < 8; priority_level++) {
1520 bw.i = EXTRACT_32BITS(tptr);
1521 printf("%s priority level %d: %.3f Mbps",
1528 switch (gmpls_switch_cap) {
1533 bw.i = EXTRACT_32BITS(tptr);
1534 printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
1535 printf("%s Interface MTU: %u", ident, EXTRACT_16BITS(tptr+4));
1538 bw.i = EXTRACT_32BITS(tptr);
1539 printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
1540 printf("%s Indication %s", ident,
1541 tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", *(tptr+4)));
1544 /* there is some optional stuff left to decode but this is as of yet
1545 not specified so just lets hexdump what is left */
1547 if(!print_unknown_data(tptr,"\n\t\t ",
1555 if(!print_unknown_data(tptr,"\n\t\t ",
1563 printf("%spacket exceeded snapshot",ident);
1569 * this is the common IS-REACH decoder it is called
1570 * from various EXTD-IS REACH style TLVs (22,24,222)
1574 isis_print_ext_is_reach (const u_int8_t *tptr,const char *ident, int tlv_type) {
1576 char ident_buffer[20];
1577 int subtlv_type,subtlv_len,subtlv_sum_len;
1578 int proc_bytes = 0; /* how many bytes did we process ? */
1580 if (!TTEST2(*tptr, NODE_ID_LEN))
1583 printf("%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN));
1584 tptr+=(NODE_ID_LEN);
1586 if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */
1587 if (!TTEST2(*tptr, 3)) /* and is therefore skipped */
1589 printf(", Metric: %d",EXTRACT_24BITS(tptr));
1593 if (!TTEST2(*tptr, 1))
1595 subtlv_sum_len=*(tptr++); /* read out subTLV length */
1596 proc_bytes=NODE_ID_LEN+3+1;
1597 printf(", %ssub-TLVs present",subtlv_sum_len ? "" : "no ");
1598 if (subtlv_sum_len) {
1599 printf(" (%u)",subtlv_sum_len);
1600 while (subtlv_sum_len>0) {
1601 if (!TTEST2(*tptr,2))
1603 subtlv_type=*(tptr++);
1604 subtlv_len=*(tptr++);
1605 /* prepend the ident string */
1606 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1607 if(!isis_print_is_reach_subtlv(tptr,subtlv_type,subtlv_len,ident_buffer))
1610 subtlv_sum_len-=(subtlv_len+2);
1611 proc_bytes+=(subtlv_len+2);
1618 * this is the common Multi Topology ID decoder
1619 * it is called from various MT-TLVs (222,229,235,237)
1623 isis_print_mtid (const u_int8_t *tptr,const char *ident) {
1625 if (!TTEST2(*tptr, 2))
1630 tok2str(isis_mt_values,
1631 "Reserved for IETF Consensus",
1632 ISIS_MASK_MTID(EXTRACT_16BITS(tptr))));
1634 printf(" Topology (0x%03x), Flags: [%s]",
1635 ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
1636 bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr))));
1642 * this is the common extended IP reach decoder
1643 * it is called from TLVs (135,235,236,237)
1644 * we process the TLV and optional subTLVs and return
1645 * the amount of processed bytes
1649 isis_print_extd_ip_reach (const u_int8_t *tptr, const char *ident, u_int16_t afi) {
1651 char ident_buffer[20];
1653 u_int8_t prefix[sizeof(struct in6_addr)]; /* shared copy buffer for IPv4 and IPv6 prefixes */
1655 u_int8_t prefix[sizeof(struct in_addr)]; /* shared copy buffer for IPv4 prefixes */
1657 u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
1659 if (!TTEST2(*tptr, 4))
1661 metric = EXTRACT_32BITS(tptr);
1665 if (afi == AF_INET) {
1666 if (!TTEST2(*tptr, 1)) /* fetch status byte */
1668 status_byte=*(tptr++);
1669 bit_length = status_byte&0x3f;
1670 if (bit_length > 32) {
1671 printf("%sIPv4 prefix: bad bit length %u",
1678 } else if (afi == AF_INET6) {
1679 if (!TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
1681 status_byte=*(tptr++);
1682 bit_length=*(tptr++);
1683 if (bit_length > 128) {
1684 printf("%sIPv6 prefix: bad bit length %u",
1692 return (0); /* somebody is fooling us */
1694 byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
1696 if (!TTEST2(*tptr, byte_length))
1698 memset(prefix, 0, sizeof prefix); /* clear the copy buffer */
1699 memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
1701 processed+=byte_length;
1704 printf("%sIPv4 prefix: %15s/%u",
1706 ipaddr_string(prefix),
1709 if (afi == AF_INET6)
1710 printf("%sIPv6 prefix: %s/%u",
1712 ip6addr_string(prefix),
1716 printf(", Distribution: %s, Metric: %u",
1717 ISIS_MASK_TLV_EXTD_IP_UPDOWN(status_byte) ? "down" : "up",
1720 if (afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1721 printf(", sub-TLVs present");
1723 if (afi == AF_INET6)
1725 ISIS_MASK_TLV_EXTD_IP6_IE(status_byte) ? "External" : "Internal",
1726 ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : "");
1729 if ((afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1731 || (afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte))
1734 /* assume that one prefix can hold more
1735 than one subTLV - therefore the first byte must reflect
1736 the aggregate bytecount of the subTLVs for this prefix
1738 if (!TTEST2(*tptr, 1))
1741 processed+=sublen+1;
1742 printf(" (%u)",sublen); /* print out subTLV length */
1745 if (!TTEST2(*tptr,2))
1747 subtlvtype=*(tptr++);
1748 subtlvlen=*(tptr++);
1749 /* prepend the ident string */
1750 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1751 if(!isis_print_ip_reach_subtlv(tptr,subtlvtype,subtlvlen,ident_buffer))
1754 sublen-=(subtlvlen+2);
1762 * Decode IS-IS packets. Return 0 on error.
1765 static int isis_print (const u_int8_t *p, u_int length)
1767 const struct isis_common_header *isis_header;
1769 const struct isis_iih_lan_header *header_iih_lan;
1770 const struct isis_iih_ptp_header *header_iih_ptp;
1771 struct isis_lsp_header *header_lsp;
1772 const struct isis_csnp_header *header_csnp;
1773 const struct isis_psnp_header *header_psnp;
1775 const struct isis_tlv_lsp *tlv_lsp;
1776 const struct isis_tlv_ptp_adj *tlv_ptp_adj;
1777 const struct isis_tlv_is_reach *tlv_is_reach;
1778 const struct isis_tlv_es_reach *tlv_es_reach;
1780 u_int8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
1781 u_int8_t ext_is_len, ext_ip_len, mt_len;
1782 const u_int8_t *optr, *pptr, *tptr;
1783 u_short packet_len,pdu_len, key_id;
1788 optr = p; /* initialize the _o_riginal pointer to the packet start -
1789 need it for parsing the checksum TLV and authentication
1791 isis_header = (const struct isis_common_header *)p;
1792 TCHECK(*isis_header);
1793 pptr = p+(ISIS_COMMON_HEADER_SIZE);
1794 header_iih_lan = (const struct isis_iih_lan_header *)pptr;
1795 header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
1796 header_lsp = (struct isis_lsp_header *)pptr;
1797 header_csnp = (const struct isis_csnp_header *)pptr;
1798 header_psnp = (const struct isis_psnp_header *)pptr;
1804 * Sanity checking of the header.
1807 if (isis_header->version != ISIS_VERSION) {
1808 printf("version %d packet not supported", isis_header->version);
1812 if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) {
1813 printf("system ID length of %d is not supported",
1814 isis_header->id_length);
1818 if (isis_header->pdu_version != ISIS_VERSION) {
1819 printf("version %d packet not supported", isis_header->pdu_version);
1823 max_area = isis_header->max_area;
1826 max_area = 3; /* silly shit */
1829 printf("bad packet -- 255 areas");
1835 id_length = isis_header->id_length;
1838 id_length = 6; /* silly shit again */
1840 case 1: /* 1-8 are valid sys-ID lenghts */
1850 id_length = 0; /* entirely useless */
1856 /* toss any non 6-byte sys-ID len PDUs */
1857 if (id_length != 6 ) {
1858 printf("bad packet -- illegal sys-ID length (%u)", id_length);
1862 pdu_type=isis_header->pdu_type;
1864 /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
1868 tok2str(isis_pdu_values,"unknown PDU-Type %u",pdu_type));
1872 case ISIS_PDU_L1_LAN_IIH:
1873 case ISIS_PDU_L2_LAN_IIH:
1874 printf(", src-id %s",
1875 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN));
1876 printf(", lan-id %s, prio %u",
1877 isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN),
1878 header_iih_lan->priority);
1880 case ISIS_PDU_PTP_IIH:
1881 printf(", src-id %s", isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN));
1883 case ISIS_PDU_L1_LSP:
1884 case ISIS_PDU_L2_LSP:
1885 printf(", lsp-id %s, seq 0x%08x, lifetime %5us",
1886 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
1887 EXTRACT_32BITS(header_lsp->sequence_number),
1888 EXTRACT_16BITS(header_lsp->remaining_lifetime));
1890 case ISIS_PDU_L1_CSNP:
1891 case ISIS_PDU_L2_CSNP:
1892 printf(", src-id %s", isis_print_id(header_csnp->source_id,NODE_ID_LEN));
1894 case ISIS_PDU_L1_PSNP:
1895 case ISIS_PDU_L2_PSNP:
1896 printf(", src-id %s", isis_print_id(header_psnp->source_id,NODE_ID_LEN));
1900 printf(", length %u", length);
1905 /* ok they seem to want to know everything - lets fully decode it */
1906 printf("%slength %u", eflag ? "" : ", ",length);
1908 printf("\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
1909 tok2str(isis_pdu_values,
1912 isis_header->fixed_len,
1913 isis_header->version,
1914 isis_header->pdu_version,
1916 isis_header->id_length,
1918 isis_header->max_area);
1921 if(!print_unknown_data(optr,"\n\t",8)) /* provide the _o_riginal pointer */
1922 return(0); /* for optionally debugging the common header */
1927 case ISIS_PDU_L1_LAN_IIH:
1928 case ISIS_PDU_L2_LAN_IIH:
1929 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
1930 printf(", bogus fixed header length %u should be %lu",
1931 isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE);
1935 pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
1936 if (packet_len>pdu_len) {
1937 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1941 TCHECK(*header_iih_lan);
1942 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1943 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
1944 EXTRACT_16BITS(header_iih_lan->holding_time),
1945 tok2str(isis_iih_circuit_type_values,
1946 "unknown circuit type 0x%02x",
1947 header_iih_lan->circuit_type));
1949 printf("\n\t lan-id: %s, Priority: %u, PDU length: %u",
1950 isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
1951 (header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK,
1955 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_LAN_HEADER_SIZE))
1959 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1960 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1963 case ISIS_PDU_PTP_IIH:
1964 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
1965 printf(", bogus fixed header length %u should be %lu",
1966 isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE);
1970 pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
1971 if (packet_len>pdu_len) {
1972 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1976 TCHECK(*header_iih_ptp);
1977 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1978 isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
1979 EXTRACT_16BITS(header_iih_ptp->holding_time),
1980 tok2str(isis_iih_circuit_type_values,
1981 "unknown circuit type 0x%02x",
1982 header_iih_ptp->circuit_type));
1984 printf("\n\t circuit-id: 0x%02x, PDU length: %u",
1985 header_iih_ptp->circuit_id,
1989 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_PTP_HEADER_SIZE))
1993 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1994 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1997 case ISIS_PDU_L1_LSP:
1998 case ISIS_PDU_L2_LSP:
1999 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
2000 printf(", bogus fixed header length %u should be %lu",
2001 isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE);
2005 pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
2006 if (packet_len>pdu_len) {
2007 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2011 TCHECK(*header_lsp);
2012 printf("\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us\n\t chksum: 0x%04x",
2013 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
2014 EXTRACT_32BITS(header_lsp->sequence_number),
2015 EXTRACT_16BITS(header_lsp->remaining_lifetime),
2016 EXTRACT_16BITS(header_lsp->checksum));
2019 osi_print_cksum((u_int8_t *)header_lsp->lsp_id,
2020 EXTRACT_16BITS(header_lsp->checksum), 12, length-12);
2023 * Clear checksum and lifetime prior to signature verification.
2025 header_lsp->checksum[0] = 0;
2026 header_lsp->checksum[1] = 0;
2027 header_lsp->remaining_lifetime[0] = 0;
2028 header_lsp->remaining_lifetime[1] = 0;
2031 printf(", PDU length: %u, Flags: [ %s",
2033 ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : "");
2035 if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
2036 printf("%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : "");
2037 printf("%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : "");
2038 printf("%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : "");
2039 printf("%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : "");
2040 printf("ATT bit set, ");
2042 printf("%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : "");
2043 printf("%s ]", tok2str(isis_lsp_istype_values,"Unknown(0x%x)",ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock)));
2046 if(!print_unknown_data(pptr,"\n\t ",ISIS_LSP_HEADER_SIZE))
2050 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2051 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2054 case ISIS_PDU_L1_CSNP:
2055 case ISIS_PDU_L2_CSNP:
2056 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
2057 printf(", bogus fixed header length %u should be %lu",
2058 isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE);
2062 pdu_len=EXTRACT_16BITS(header_csnp->pdu_len);
2063 if (packet_len>pdu_len) {
2064 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2068 TCHECK(*header_csnp);
2069 printf("\n\t source-id: %s, PDU length: %u",
2070 isis_print_id(header_csnp->source_id, NODE_ID_LEN),
2072 printf("\n\t start lsp-id: %s",
2073 isis_print_id(header_csnp->start_lsp_id, LSP_ID_LEN));
2074 printf("\n\t end lsp-id: %s",
2075 isis_print_id(header_csnp->end_lsp_id, LSP_ID_LEN));
2078 if(!print_unknown_data(pptr,"\n\t ",ISIS_CSNP_HEADER_SIZE))
2082 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2083 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2086 case ISIS_PDU_L1_PSNP:
2087 case ISIS_PDU_L2_PSNP:
2088 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) {
2089 printf("- bogus fixed header length %u should be %lu",
2090 isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE);
2094 pdu_len=EXTRACT_16BITS(header_psnp->pdu_len);
2095 if (packet_len>pdu_len) {
2096 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2100 TCHECK(*header_psnp);
2101 printf("\n\t source-id: %s, PDU length: %u",
2102 isis_print_id(header_psnp->source_id, NODE_ID_LEN),
2106 if(!print_unknown_data(pptr,"\n\t ",ISIS_PSNP_HEADER_SIZE))
2110 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2111 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2115 if(!print_unknown_data(pptr,"\n\t ",length))
2121 * Now print the TLV's.
2124 while (packet_len >= 2) {
2125 if (pptr == snapend) {
2129 if (!TTEST2(*pptr, 2)) {
2130 printf("\n\t\t packet exceeded snapshot (%ld) bytes",
2131 (long)(pptr-snapend));
2136 tmp =tlv_len; /* copy temporary len & pointer to packet data */
2139 if (tlv_len > packet_len) {
2143 /* first lets see if we know the TLVs name*/
2144 printf("\n\t %s TLV #%u, length: %u",
2145 tok2str(isis_tlv_values,
2151 if (tlv_len == 0) /* something is malformed */
2154 /* now check if we have a decoder otherwise do a hexdump at the end*/
2156 case ISIS_TLV_AREA_ADDR:
2157 if (!TTEST2(*tptr, 1))
2160 while (tmp && alen < tmp) {
2161 printf("\n\t Area address (length: %u): %s",
2163 isonsap_string(tptr,alen));
2166 if (tmp==0) /* if this is the last area address do not attemt a boundary check */
2168 if (!TTEST2(*tptr, 1))
2173 case ISIS_TLV_ISNEIGH:
2174 while (tmp >= ETHER_ADDR_LEN) {
2175 if (!TTEST2(*tptr, ETHER_ADDR_LEN))
2177 printf("\n\t SNPA: %s",isis_print_id(tptr,ETHER_ADDR_LEN));
2178 tmp -= ETHER_ADDR_LEN;
2179 tptr += ETHER_ADDR_LEN;
2183 case ISIS_TLV_ISNEIGH_VARLEN:
2184 if (!TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */
2186 lan_alen = *tptr++; /* LAN address length */
2187 if (lan_alen == 0) {
2188 printf("\n\t LAN address length 0 bytes (invalid)");
2192 printf("\n\t LAN address length %u bytes ",lan_alen);
2193 while (tmp >= lan_alen) {
2194 if (!TTEST2(*tptr, lan_alen))
2196 printf("\n\t\tIS Neighbor: %s",isis_print_id(tptr,lan_alen));
2202 case ISIS_TLV_PADDING:
2205 case ISIS_TLV_MT_IS_REACH:
2206 mt_len = isis_print_mtid(tptr, "\n\t ");
2207 if (mt_len == 0) /* did something go wrong ? */
2211 while (tmp >= 2+NODE_ID_LEN+3+1) {
2212 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2213 if (ext_is_len == 0) /* did something go wrong ? */
2221 case ISIS_TLV_IS_ALIAS_ID:
2222 while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */
2223 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2224 if (ext_is_len == 0) /* did something go wrong ? */
2231 case ISIS_TLV_EXT_IS_REACH:
2232 while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */
2233 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2234 if (ext_is_len == 0) /* did something go wrong ? */
2240 case ISIS_TLV_IS_REACH:
2241 if (!TTEST2(*tptr,1)) /* check if there is one byte left to read out the virtual flag */
2244 tok2str(isis_is_reach_virtual_values,
2245 "bogus virtual flag 0x%02x",
2247 tlv_is_reach = (const struct isis_tlv_is_reach *)tptr;
2248 while (tmp >= sizeof(struct isis_tlv_is_reach)) {
2249 if (!TTEST(*tlv_is_reach))
2251 printf("\n\t IS Neighbor: %s",
2252 isis_print_id(tlv_is_reach->neighbor_nodeid, NODE_ID_LEN));
2253 isis_print_metric_block(&tlv_is_reach->isis_metric_block);
2254 tmp -= sizeof(struct isis_tlv_is_reach);
2259 case ISIS_TLV_ESNEIGH:
2260 tlv_es_reach = (const struct isis_tlv_es_reach *)tptr;
2261 while (tmp >= sizeof(struct isis_tlv_es_reach)) {
2262 if (!TTEST(*tlv_es_reach))
2264 printf("\n\t ES Neighbor: %s",
2265 isis_print_id(tlv_es_reach->neighbor_sysid,SYSTEM_ID_LEN));
2266 isis_print_metric_block(&tlv_es_reach->isis_metric_block);
2267 tmp -= sizeof(struct isis_tlv_es_reach);
2272 /* those two TLVs share the same format */
2273 case ISIS_TLV_INT_IP_REACH:
2274 case ISIS_TLV_EXT_IP_REACH:
2275 if (!isis_print_tlv_ip_reach(pptr, "\n\t ", tlv_len))
2279 case ISIS_TLV_EXTD_IP_REACH:
2281 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
2282 if (ext_ip_len == 0) /* did something go wrong ? */
2289 case ISIS_TLV_MT_IP_REACH:
2290 mt_len = isis_print_mtid(tptr, "\n\t ");
2291 if (mt_len == 0) { /* did something go wrong ? */
2298 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
2299 if (ext_ip_len == 0) /* did something go wrong ? */
2307 case ISIS_TLV_IP6_REACH:
2309 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
2310 if (ext_ip_len == 0) /* did something go wrong ? */
2317 case ISIS_TLV_MT_IP6_REACH:
2318 mt_len = isis_print_mtid(tptr, "\n\t ");
2319 if (mt_len == 0) { /* did something go wrong ? */
2326 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
2327 if (ext_ip_len == 0) /* did something go wrong ? */
2334 case ISIS_TLV_IP6ADDR:
2335 while (tmp>=sizeof(struct in6_addr)) {
2336 if (!TTEST2(*tptr, sizeof(struct in6_addr)))
2339 printf("\n\t IPv6 interface address: %s",
2340 ip6addr_string(tptr));
2342 tptr += sizeof(struct in6_addr);
2343 tmp -= sizeof(struct in6_addr);
2348 if (!TTEST2(*tptr, 1))
2352 tok2str(isis_subtlv_auth_values,
2353 "unknown Authentication type 0x%02x",
2357 case ISIS_SUBTLV_AUTH_SIMPLE:
2358 for(i=1;i<tlv_len;i++) {
2359 if (!TTEST2(*(tptr+i), 1))
2361 printf("%c",*(tptr+i));
2364 case ISIS_SUBTLV_AUTH_MD5:
2365 for(i=1;i<tlv_len;i++) {
2366 if (!TTEST2(*(tptr+i), 1))
2368 printf("%02x",*(tptr+i));
2370 if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1)
2371 printf(", (malformed subTLV) ");
2373 #ifdef HAVE_LIBCRYPTO
2374 sigcheck = signature_verify(optr, length,
2375 (unsigned char *)tptr + 1);
2377 sigcheck = CANT_CHECK_SIGNATURE;
2379 printf(" (%s)", tok2str(signature_check_values, "Unknown", sigcheck));
2382 case ISIS_SUBTLV_AUTH_GENERIC:
2383 key_id = EXTRACT_16BITS((tptr+1));
2384 printf("%u, password: ", key_id);
2385 for(i=1 + sizeof(u_int16_t);i<tlv_len;i++) {
2386 if (!TTEST2(*(tptr+i), 1))
2388 printf("%02x",*(tptr+i));
2391 case ISIS_SUBTLV_AUTH_PRIVATE:
2393 if(!print_unknown_data(tptr+1,"\n\t\t ",tlv_len-1))
2399 case ISIS_TLV_PTP_ADJ:
2400 tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr;
2402 if (!TTEST2(*tptr, 1))
2404 printf("\n\t Adjacency State: %s (%u)",
2405 tok2str(isis_ptp_adjancey_values, "unknown", *tptr),
2409 if(tmp>sizeof(tlv_ptp_adj->extd_local_circuit_id)) {
2410 if (!TTEST2(tlv_ptp_adj->extd_local_circuit_id,
2411 sizeof(tlv_ptp_adj->extd_local_circuit_id)))
2413 printf("\n\t Extended Local circuit-ID: 0x%08x",
2414 EXTRACT_32BITS(tlv_ptp_adj->extd_local_circuit_id));
2415 tmp-=sizeof(tlv_ptp_adj->extd_local_circuit_id);
2417 if(tmp>=SYSTEM_ID_LEN) {
2418 if (!TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN))
2420 printf("\n\t Neighbor System-ID: %s",
2421 isis_print_id(tlv_ptp_adj->neighbor_sysid,SYSTEM_ID_LEN));
2424 if(tmp>=sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)) {
2425 if (!TTEST2(tlv_ptp_adj->neighbor_extd_local_circuit_id,
2426 sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)))
2428 printf("\n\t Neighbor Extended Local circuit-ID: 0x%08x",
2429 EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id));
2433 case ISIS_TLV_PROTOCOLS:
2434 printf("\n\t NLPID(s): ");
2436 if (!TTEST2(*(tptr), 1))
2438 printf("%s (0x%02x)",
2439 tok2str(nlpid_values,
2443 if (tmp>1) /* further NPLIDs ? - put comma */
2450 case ISIS_TLV_TE_ROUTER_ID:
2451 if (!TTEST2(*pptr, sizeof(struct in_addr)))
2453 printf("\n\t Traffic Engineering Router ID: %s", ipaddr_string(pptr));
2456 case ISIS_TLV_IPADDR:
2457 while (tmp>=sizeof(struct in_addr)) {
2458 if (!TTEST2(*tptr, sizeof(struct in_addr)))
2460 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2461 tptr += sizeof(struct in_addr);
2462 tmp -= sizeof(struct in_addr);
2466 case ISIS_TLV_HOSTNAME:
2467 printf("\n\t Hostname: ");
2469 if (!TTEST2(*tptr, 1))
2471 printf("%c",*tptr++);
2476 case ISIS_TLV_SHARED_RISK_GROUP:
2477 if (tmp < NODE_ID_LEN)
2479 if (!TTEST2(*tptr, NODE_ID_LEN))
2481 printf("\n\t IS Neighbor: %s", isis_print_id(tptr, NODE_ID_LEN));
2482 tptr+=(NODE_ID_LEN);
2487 if (!TTEST2(*tptr, 1))
2489 printf(", Flags: [%s]", ISIS_MASK_TLV_SHARED_RISK_GROUP(*tptr++) ? "numbered" : "unnumbered");
2492 if (tmp < sizeof(struct in_addr))
2494 if (!TTEST2(*tptr,sizeof(struct in_addr)))
2496 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2497 tptr+=sizeof(struct in_addr);
2498 tmp-=sizeof(struct in_addr);
2500 if (tmp < sizeof(struct in_addr))
2502 if (!TTEST2(*tptr,sizeof(struct in_addr)))
2504 printf("\n\t IPv4 neighbor address: %s", ipaddr_string(tptr));
2505 tptr+=sizeof(struct in_addr);
2506 tmp-=sizeof(struct in_addr);
2509 if (!TTEST2(*tptr, 4))
2511 printf("\n\t Link-ID: 0x%08x", EXTRACT_32BITS(tptr));
2518 tlv_lsp = (const struct isis_tlv_lsp *)tptr;
2519 while(tmp>=sizeof(struct isis_tlv_lsp)) {
2520 if (!TTEST((tlv_lsp->lsp_id)[LSP_ID_LEN-1]))
2522 printf("\n\t lsp-id: %s",
2523 isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN));
2524 if (!TTEST2(tlv_lsp->sequence_number, 4))
2526 printf(", seq: 0x%08x",EXTRACT_32BITS(tlv_lsp->sequence_number));
2527 if (!TTEST2(tlv_lsp->remaining_lifetime, 2))
2529 printf(", lifetime: %5ds",EXTRACT_16BITS(tlv_lsp->remaining_lifetime));
2530 if (!TTEST2(tlv_lsp->checksum, 2))
2532 printf(", chksum: 0x%04x",EXTRACT_16BITS(tlv_lsp->checksum));
2533 tmp-=sizeof(struct isis_tlv_lsp);
2538 case ISIS_TLV_CHECKSUM:
2539 if (tmp < ISIS_TLV_CHECKSUM_MINLEN)
2541 if (!TTEST2(*tptr, ISIS_TLV_CHECKSUM_MINLEN))
2543 printf("\n\t checksum: 0x%04x ", EXTRACT_16BITS(tptr));
2544 /* do not attempt to verify the checksum if it is zero
2545 * most likely a HMAC-MD5 TLV is also present and
2546 * to avoid conflicts the checksum TLV is zeroed.
2547 * see rfc3358 for details
2549 osi_print_cksum(optr, EXTRACT_16BITS(tptr), tptr-optr, length);
2552 case ISIS_TLV_MT_SUPPORTED:
2553 if (tmp < ISIS_TLV_MT_SUPPORTED_MINLEN)
2556 /* length can only be a multiple of 2, otherwise there is
2557 something broken -> so decode down until length is 1 */
2559 mt_len = isis_print_mtid(tptr, "\n\t ");
2560 if (mt_len == 0) /* did something go wrong ? */
2565 printf("\n\t malformed MT-ID");
2571 case ISIS_TLV_RESTART_SIGNALING:
2572 /* first attempt to decode the flags */
2573 if (tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN)
2575 if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_FLAGLEN))
2577 printf("\n\t Flags [%s]",
2578 bittok2str(isis_restart_flag_values, "none", *tptr));
2579 tptr+=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2580 tmp-=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2582 /* is there anything other than the flags field? */
2586 if (tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN)
2588 if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN))
2591 printf(", Remaining holding time %us", EXTRACT_16BITS(tptr));
2592 tptr+=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2593 tmp-=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2595 /* is there an additional sysid field present ?*/
2596 if (tmp == SYSTEM_ID_LEN) {
2597 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2599 printf(", for %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2603 case ISIS_TLV_IDRP_INFO:
2604 if (tmp < ISIS_TLV_IDRP_INFO_MINLEN)
2606 if (!TTEST2(*tptr, ISIS_TLV_IDRP_INFO_MINLEN))
2608 printf("\n\t Inter-Domain Information Type: %s",
2609 tok2str(isis_subtlv_idrp_values,
2613 case ISIS_SUBTLV_IDRP_ASN:
2614 if (!TTEST2(*tptr, 2)) /* fetch AS number */
2616 printf("AS Number: %u",EXTRACT_16BITS(tptr));
2618 case ISIS_SUBTLV_IDRP_LOCAL:
2619 case ISIS_SUBTLV_IDRP_RES:
2621 if(!print_unknown_data(tptr,"\n\t ",tlv_len-1))
2627 case ISIS_TLV_LSP_BUFFERSIZE:
2628 if (tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN)
2630 if (!TTEST2(*tptr, ISIS_TLV_LSP_BUFFERSIZE_MINLEN))
2632 printf("\n\t LSP Buffersize: %u",EXTRACT_16BITS(tptr));
2635 case ISIS_TLV_PART_DIS:
2636 while (tmp >= SYSTEM_ID_LEN) {
2637 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2639 printf("\n\t %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2640 tptr+=SYSTEM_ID_LEN;
2645 case ISIS_TLV_PREFIX_NEIGH:
2646 if (tmp < sizeof(struct isis_metric_block))
2648 if (!TTEST2(*tptr, sizeof(struct isis_metric_block)))
2650 printf("\n\t Metric Block");
2651 isis_print_metric_block((const struct isis_metric_block *)tptr);
2652 tptr+=sizeof(struct isis_metric_block);
2653 tmp-=sizeof(struct isis_metric_block);
2656 if (!TTEST2(*tptr, 1))
2658 prefix_len=*tptr++; /* read out prefix length in semioctets*/
2659 if (prefix_len < 2) {
2660 printf("\n\t\tAddress: prefix length %u < 2", prefix_len);
2664 if (tmp < prefix_len/2)
2666 if (!TTEST2(*tptr, prefix_len/2))
2668 printf("\n\t\tAddress: %s/%u",
2669 isonsap_string(tptr,prefix_len/2),
2676 case ISIS_TLV_IIH_SEQNR:
2677 if (tmp < ISIS_TLV_IIH_SEQNR_MINLEN)
2679 if (!TTEST2(*tptr, ISIS_TLV_IIH_SEQNR_MINLEN)) /* check if four bytes are on the wire */
2681 printf("\n\t Sequence number: %u", EXTRACT_32BITS(tptr) );
2684 case ISIS_TLV_VENDOR_PRIVATE:
2685 if (tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN)
2687 if (!TTEST2(*tptr, ISIS_TLV_VENDOR_PRIVATE_MINLEN)) /* check if enough byte for a full oui */
2689 vendor_id = EXTRACT_24BITS(tptr);
2690 printf("\n\t Vendor: %s (%u)",
2691 tok2str(oui_values,"Unknown",vendor_id),
2695 if (tmp > 0) /* hexdump the rest */
2696 if(!print_unknown_data(tptr,"\n\t\t",tmp))
2700 * FIXME those are the defined TLVs that lack a decoder
2701 * you are welcome to contribute code ;-)
2704 case ISIS_TLV_DECNET_PHASE4:
2705 case ISIS_TLV_LUCENT_PRIVATE:
2706 case ISIS_TLV_IPAUTH:
2707 case ISIS_TLV_NORTEL_PRIVATE1:
2708 case ISIS_TLV_NORTEL_PRIVATE2:
2712 if(!print_unknown_data(pptr,"\n\t\t",tlv_len))
2717 /* do we want to see an additionally hexdump ? */
2719 if(!print_unknown_data(pptr,"\n\t ",tlv_len))
2724 packet_len -= tlv_len;
2727 if (packet_len != 0) {
2728 printf("\n\t %u straggler bytes", packet_len);
2733 fputs("[|isis]", stdout);
2737 printf("\n\t\t packet exceeded snapshot");
2742 osi_print_cksum (const u_int8_t *pptr, u_int16_t checksum,
2743 u_int checksum_offset, u_int length)
2745 u_int16_t calculated_checksum;
2747 /* do not attempt to verify the checksum if it is zero */
2749 printf("(unverified)");
2751 calculated_checksum = create_osi_cksum(pptr, checksum_offset, length);
2752 if (checksum == calculated_checksum) {
2753 printf(" (correct)");
2755 printf(" (incorrect should be 0x%04x)", calculated_checksum);
2762 * c-style: whitesmith