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_MD5 54
399 #define ISIS_SUBTLV_AUTH_MD5_LEN 16
400 #define ISIS_SUBTLV_AUTH_PRIVATE 255
402 static struct tok isis_subtlv_auth_values[] = {
403 { ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
404 { ISIS_SUBTLV_AUTH_MD5, "HMAC-MD5 password"},
405 { ISIS_SUBTLV_AUTH_PRIVATE, "Routing Domain private password"},
409 #define ISIS_SUBTLV_IDRP_RES 0
410 #define ISIS_SUBTLV_IDRP_LOCAL 1
411 #define ISIS_SUBTLV_IDRP_ASN 2
413 static struct tok isis_subtlv_idrp_values[] = {
414 { ISIS_SUBTLV_IDRP_RES, "Reserved"},
415 { ISIS_SUBTLV_IDRP_LOCAL, "Routing-Domain Specific"},
416 { ISIS_SUBTLV_IDRP_ASN, "AS Number Tag"},
420 #define CLNP_SEGMENT_PART 0x80
421 #define CLNP_MORE_SEGMENTS 0x40
422 #define CLNP_REQUEST_ER 0x20
424 static struct tok clnp_flag_values[] = {
425 { CLNP_SEGMENT_PART, "Segmentation permitted"},
426 { CLNP_MORE_SEGMENTS, "more Segments"},
427 { CLNP_REQUEST_ER, "request Error Report"},
431 #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
432 #define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3)
433 #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
434 #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
435 #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
436 #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
437 #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
438 #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
440 #define ISIS_MASK_MTID(x) ((x)&0x0fff)
441 #define ISIS_MASK_MTFLAGS(x) ((x)&0xf000)
443 static struct tok isis_mt_flag_values[] = {
444 { 0x4000, "sub-TLVs present"},
445 { 0x8000, "ATT bit set"},
449 #define ISIS_MASK_TLV_EXTD_IP_UPDOWN(x) ((x)&0x80)
450 #define ISIS_MASK_TLV_EXTD_IP_SUBTLV(x) ((x)&0x40)
452 #define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40)
453 #define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20)
455 #define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80)
456 #define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40)
457 #define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80)
458 #define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f)
460 #define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1)
462 static struct tok isis_mt_values[] = {
463 { 0, "IPv4 unicast"},
464 { 1, "In-Band Management"},
465 { 2, "IPv6 unicast"},
467 { 4095, "Development, Experimental or Proprietary"},
471 static struct tok isis_iih_circuit_type_values[] = {
472 { 1, "Level 1 only"},
473 { 2, "Level 2 only"},
474 { 3, "Level 1, Level 2"},
478 #define ISIS_LSP_TYPE_UNUSED0 0
479 #define ISIS_LSP_TYPE_LEVEL_1 1
480 #define ISIS_LSP_TYPE_UNUSED2 2
481 #define ISIS_LSP_TYPE_LEVEL_2 3
483 static struct tok isis_lsp_istype_values[] = {
484 { ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
485 { ISIS_LSP_TYPE_LEVEL_1, "L1 IS"},
486 { ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
487 { ISIS_LSP_TYPE_LEVEL_2, "L2 IS"},
492 * Katz's point to point adjacency TLV uses codes to tell us the state of
493 * the remote adjacency. Enumerate them.
496 #define ISIS_PTP_ADJ_UP 0
497 #define ISIS_PTP_ADJ_INIT 1
498 #define ISIS_PTP_ADJ_DOWN 2
500 static struct tok isis_ptp_adjancey_values[] = {
501 { ISIS_PTP_ADJ_UP, "Up" },
502 { ISIS_PTP_ADJ_INIT, "Initializing" },
503 { ISIS_PTP_ADJ_DOWN, "Down" },
507 struct isis_tlv_ptp_adj {
508 u_int8_t adjacency_state;
509 u_int8_t extd_local_circuit_id[4];
510 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
511 u_int8_t neighbor_extd_local_circuit_id[4];
514 static void osi_print_cksum(const u_int8_t *pptr, u_int16_t checksum,
515 u_int checksum_offset, u_int length);
516 static int clnp_print(const u_int8_t *, u_int);
517 static void esis_print(const u_int8_t *, u_int);
518 static int isis_print(const u_int8_t *, u_int);
520 struct isis_metric_block {
521 u_int8_t metric_default;
522 u_int8_t metric_delay;
523 u_int8_t metric_expense;
524 u_int8_t metric_error;
527 struct isis_tlv_is_reach {
528 struct isis_metric_block isis_metric_block;
529 u_int8_t neighbor_nodeid[NODE_ID_LEN];
532 struct isis_tlv_es_reach {
533 struct isis_metric_block isis_metric_block;
534 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
537 struct isis_tlv_ip_reach {
538 struct isis_metric_block isis_metric_block;
543 static struct tok isis_is_reach_virtual_values[] = {
544 { 0, "IsNotVirtual"},
549 static struct tok isis_restart_flag_values[] = {
550 { 0x1, "Restart Request"},
551 { 0x2, "Restart Acknowledgement"},
552 { 0x4, "Suppress adjacency advertisement"},
556 struct isis_common_header {
559 u_int8_t version; /* Protocol version */
561 u_int8_t pdu_type; /* 3 MSbits are reserved */
562 u_int8_t pdu_version; /* Packet format version */
567 struct isis_iih_lan_header {
568 u_int8_t circuit_type;
569 u_int8_t source_id[SYSTEM_ID_LEN];
570 u_int8_t holding_time[2];
573 u_int8_t lan_id[NODE_ID_LEN];
576 struct isis_iih_ptp_header {
577 u_int8_t circuit_type;
578 u_int8_t source_id[SYSTEM_ID_LEN];
579 u_int8_t holding_time[2];
584 struct isis_lsp_header {
586 u_int8_t remaining_lifetime[2];
587 u_int8_t lsp_id[LSP_ID_LEN];
588 u_int8_t sequence_number[4];
589 u_int8_t checksum[2];
593 struct isis_csnp_header {
595 u_int8_t source_id[NODE_ID_LEN];
596 u_int8_t start_lsp_id[LSP_ID_LEN];
597 u_int8_t end_lsp_id[LSP_ID_LEN];
600 struct isis_psnp_header {
602 u_int8_t source_id[NODE_ID_LEN];
605 struct isis_tlv_lsp {
606 u_int8_t remaining_lifetime[2];
607 u_int8_t lsp_id[LSP_ID_LEN];
608 u_int8_t sequence_number[4];
609 u_int8_t checksum[2];
612 #define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
613 #define ISIS_IIH_LAN_HEADER_SIZE (sizeof(struct isis_iih_lan_header))
614 #define ISIS_IIH_PTP_HEADER_SIZE (sizeof(struct isis_iih_ptp_header))
615 #define ISIS_LSP_HEADER_SIZE (sizeof(struct isis_lsp_header))
616 #define ISIS_CSNP_HEADER_SIZE (sizeof(struct isis_csnp_header))
617 #define ISIS_PSNP_HEADER_SIZE (sizeof(struct isis_psnp_header))
619 void isoclns_print(const u_int8_t *p, u_int length, u_int caplen)
621 const struct isis_common_header *header;
623 header = (const struct isis_common_header *)p;
625 if (caplen <= 1) { /* enough bytes on the wire ? */
631 printf("OSI NLPID %s (0x%02x): ",
632 tok2str(nlpid_values,"Unknown",*p),
638 if (!clnp_print(p, length))
639 print_unknown_data(p,"\n\t",caplen);
643 esis_print(p, length);
647 if (!isis_print(p, length))
648 print_unknown_data(p,"\n\t",caplen);
652 (void)printf("%slength: %u",
658 q933_print(p+1, length-1);
662 ip_print(gndo, p+1, length-1);
667 ip6_print(p+1, length-1);
672 ppp_print(p+1, length-1);
677 printf("OSI NLPID 0x%02x unknown",*p);
678 (void)printf("%slength: %u",
682 print_unknown_data(p,"\n\t",caplen);
687 #define CLNP_PDU_ER 1
688 #define CLNP_PDU_DT 28
689 #define CLNP_PDU_MD 29
690 #define CLNP_PDU_ERQ 30
691 #define CLNP_PDU_ERP 31
693 static struct tok clnp_pdu_values[] = {
694 { CLNP_PDU_ER, "Error Report"},
695 { CLNP_PDU_MD, "MD"},
696 { CLNP_PDU_DT, "Data"},
697 { CLNP_PDU_ERQ, "Echo Request"},
698 { CLNP_PDU_ERP, "Echo Response"},
702 struct clnp_header_t {
704 u_int8_t length_indicator;
706 u_int8_t lifetime; /* units of 500ms */
708 u_int8_t segment_length[2];
712 struct clnp_segment_header_t {
713 u_int8_t data_unit_id[2];
714 u_int8_t segment_offset[2];
715 u_int8_t total_length[2];
720 * Decode CLNP packets. Return 0 on error.
723 static int clnp_print (const u_int8_t *pptr, u_int length)
725 const u_int8_t *optr,*source_address,*dest_address;
726 u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags;
727 const struct clnp_header_t *clnp_header;
728 const struct clnp_segment_header_t *clnp_segment_header;
729 u_int8_t rfd_error_major,rfd_error_minor;
731 clnp_header = (const struct clnp_header_t *) pptr;
732 TCHECK(*clnp_header);
734 li = clnp_header->length_indicator;
741 * Sanity checking of the header.
744 if (clnp_header->version != CLNP_VERSION) {
745 printf("version %d packet not supported", clnp_header->version);
749 /* FIXME further header sanity checking */
751 clnp_pdu_type = clnp_header->type & CLNP_PDU_TYPE_MASK;
752 clnp_flags = clnp_header->type & CLNP_FLAG_MASK;
754 pptr += sizeof(struct clnp_header_t);
755 li -= sizeof(struct clnp_header_t);
756 dest_address_length = *pptr;
757 dest_address = pptr + 1;
759 pptr += (1 + dest_address_length);
760 li -= (1 + dest_address_length);
761 source_address_length = *pptr;
762 source_address = pptr +1;
764 pptr += (1 + source_address_length);
765 li -= (1 + source_address_length);
768 printf("%s%s > %s, %s, length %u",
770 isonsap_string(source_address, source_address_length),
771 isonsap_string(dest_address, dest_address_length),
772 tok2str(clnp_pdu_values,"unknown (%u)",clnp_pdu_type),
776 printf("%slength %u",eflag ? "" : ", ",length);
778 printf("\n\t%s PDU, hlen: %u, v: %u, lifetime: %u.%us, Segment PDU length: %u, checksum: 0x%04x",
779 tok2str(clnp_pdu_values, "unknown (%u)",clnp_pdu_type),
780 clnp_header->length_indicator,
781 clnp_header->version,
782 clnp_header->lifetime/2,
783 (clnp_header->lifetime%2)*5,
784 EXTRACT_16BITS(clnp_header->segment_length),
785 EXTRACT_16BITS(clnp_header->cksum));
787 osi_print_cksum(optr, EXTRACT_16BITS(clnp_header->cksum), 7,
788 clnp_header->length_indicator);
790 printf("\n\tFlags [%s]",
791 bittok2str(clnp_flag_values,"none",clnp_flags));
793 printf("\n\tsource address (length %u): %s\n\tdest address (length %u): %s",
794 source_address_length,
795 isonsap_string(source_address, source_address_length),
797 isonsap_string(dest_address,dest_address_length));
799 if (clnp_flags & CLNP_SEGMENT_PART) {
800 clnp_segment_header = (const struct clnp_segment_header_t *) pptr;
801 TCHECK(*clnp_segment_header);
802 printf("\n\tData Unit ID: 0x%04x, Segment Offset: %u, Total PDU Length: %u",
803 EXTRACT_16BITS(clnp_segment_header->data_unit_id),
804 EXTRACT_16BITS(clnp_segment_header->segment_offset),
805 EXTRACT_16BITS(clnp_segment_header->total_length));
806 pptr+=sizeof(const struct clnp_segment_header_t);
807 li-=sizeof(const struct clnp_segment_header_t);
810 /* now walk the options */
813 const u_int8_t *tptr;
817 printf(", bad opts/li");
823 TCHECK2(*pptr, opli);
825 printf(", opt (%d) too long", op);
832 printf("\n\t %s Option #%u, length %u, value: ",
833 tok2str(clnp_option_values,"Unknown",op),
840 case CLNP_OPTION_ROUTE_RECORDING: /* those two options share the format */
841 case CLNP_OPTION_SOURCE_ROUTING:
843 tok2str(clnp_option_sr_rr_values,"Unknown",*tptr),
844 tok2str(clnp_option_sr_rr_string_values,"Unknown Option %u",op));
845 nsap_offset=*(tptr+1);
846 if (nsap_offset == 0) {
847 printf(" Bad NSAP offset (0)");
850 nsap_offset-=1; /* offset to nsap list */
851 if (nsap_offset > tlen) {
852 printf(" Bad NSAP offset (past end of option)");
858 source_address_length=*tptr;
859 if (tlen < source_address_length+1) {
860 printf("\n\t NSAP address goes past end of option");
863 if (source_address_length > 0) {
864 source_address=(tptr+1);
865 TCHECK2(*source_address, source_address_length);
866 printf("\n\t NSAP address (length %u): %s",
867 source_address_length,
868 isonsap_string(source_address, source_address_length));
870 tlen-=source_address_length+1;
874 case CLNP_OPTION_PRIORITY:
875 printf("0x%1x", *tptr&0x0f);
878 case CLNP_OPTION_QOS_MAINTENANCE:
879 printf("\n\t Format Code: %s",
880 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK));
882 if ((*tptr&CLNP_OPTION_SCOPE_MASK) == CLNP_OPTION_SCOPE_GLOBAL)
883 printf("\n\t QoS Flags [%s]",
884 bittok2str(clnp_option_qos_global_values,
886 *tptr&CLNP_OPTION_OPTION_QOS_MASK));
889 case CLNP_OPTION_SECURITY:
890 printf("\n\t Format Code: %s, Security-Level %u",
891 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK),
895 case CLNP_OPTION_DISCARD_REASON:
896 rfd_error_major = (*tptr&0xf0) >> 4;
897 rfd_error_minor = *tptr&0x0f;
898 printf("\n\t Class: %s Error (0x%01x), %s (0x%01x)",
899 tok2str(clnp_option_rfd_class_values,"Unknown",rfd_error_major),
901 tok2str(clnp_option_rfd_error_class[rfd_error_major],"Unknown",rfd_error_minor),
905 case CLNP_OPTION_PADDING:
906 printf("padding data");
910 * FIXME those are the defined Options that lack a decoder
911 * you are welcome to contribute code ;-)
915 print_unknown_data(tptr,"\n\t ",opli);
919 print_unknown_data(pptr,"\n\t ",opli);
923 switch (clnp_pdu_type) {
925 case CLNP_PDU_ER: /* fall through */
928 if (*(pptr) == NLPID_CLNP) {
929 printf("\n\t-----original packet-----\n\t");
930 /* FIXME recursion protection */
931 clnp_print(pptr, length-clnp_header->length_indicator);
940 /* dump the PDU specific data */
941 if (length-(pptr-optr) > 0) {
942 printf("\n\t undecoded non-header data, length %u",length-clnp_header->length_indicator);
943 print_unknown_data(pptr,"\n\t ",length-(pptr-optr));
950 fputs("[|clnp]", stdout);
956 #define ESIS_PDU_REDIRECT 6
957 #define ESIS_PDU_ESH 2
958 #define ESIS_PDU_ISH 4
960 static struct tok esis_pdu_values[] = {
961 { ESIS_PDU_REDIRECT, "redirect"},
962 { ESIS_PDU_ESH, "ESH"},
963 { ESIS_PDU_ISH, "ISH"},
967 struct esis_header_t {
969 u_int8_t length_indicator;
973 u_int8_t holdtime[2];
978 esis_print(const u_int8_t *pptr, u_int length)
980 const u_int8_t *optr;
981 u_int li,esis_pdu_type,source_address_length, source_address_number;
982 const struct esis_header_t *esis_header;
991 printf("no header at all!");
995 esis_header = (const struct esis_header_t *) pptr;
996 TCHECK(*esis_header);
997 li = esis_header->length_indicator;
1001 * Sanity checking of the header.
1004 if (esis_header->nlpid != NLPID_ESIS) {
1005 printf(" nlpid 0x%02x packet not supported", esis_header->nlpid);
1009 if (esis_header->version != ESIS_VERSION) {
1010 printf(" version %d packet not supported", esis_header->version);
1015 printf(" length indicator(%d) > PDU size (%d)!", li, length);
1019 if (li < sizeof(struct esis_header_t) + 2) {
1020 printf(" length indicator < min PDU size %d:", li);
1021 while (--length != 0)
1022 printf("%02X", *pptr++);
1026 esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK;
1029 printf("%s%s, length %u",
1031 tok2str(esis_pdu_values,"unknown type (%u)",esis_pdu_type),
1035 printf("%slength %u\n\t%s (%u)",
1038 tok2str(esis_pdu_values,"unknown type: %u", esis_pdu_type),
1041 printf(", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" );
1042 printf(", checksum: 0x%04x", EXTRACT_16BITS(esis_header->cksum));
1044 osi_print_cksum(pptr, EXTRACT_16BITS(esis_header->cksum), 7, li);
1046 printf(", holding time: %us, length indicator: %u",EXTRACT_16BITS(esis_header->holdtime),li);
1049 print_unknown_data(optr,"\n\t",sizeof(struct esis_header_t));
1051 pptr += sizeof(struct esis_header_t);
1052 li -= sizeof(struct esis_header_t);
1054 switch (esis_pdu_type) {
1055 case ESIS_PDU_REDIRECT: {
1056 const u_int8_t *dst, *snpa, *neta;
1057 u_int dstl, snpal, netal;
1061 printf(", bad redirect/li");
1067 TCHECK2(*pptr, dstl);
1069 printf(", bad redirect/li");
1075 printf("\n\t %s", isonsap_string(dst,dstl));
1079 printf(", bad redirect/li");
1085 TCHECK2(*pptr, snpal);
1087 printf(", bad redirect/li");
1095 printf(", bad redirect/li");
1100 TCHECK2(*pptr, netal);
1102 printf(", bad redirect/li");
1110 printf("\n\t %s", etheraddr_string(snpa));
1112 printf("\n\t %s", isonsap_string(neta,netal));
1119 printf(", bad esh/li");
1122 source_address_number = *pptr;
1126 printf("\n\t Number of Source Addresses: %u", source_address_number);
1128 while (source_address_number > 0) {
1131 printf(", bad esh/li");
1134 source_address_length = *pptr;
1138 TCHECK2(*pptr, source_address_length);
1139 if (li < source_address_length) {
1140 printf(", bad esh/li");
1143 printf("\n\t NET (length: %u): %s",
1144 source_address_length,
1145 isonsap_string(pptr,source_address_length));
1146 pptr += source_address_length;
1147 li -= source_address_length;
1148 source_address_number--;
1153 case ESIS_PDU_ISH: {
1156 printf(", bad ish/li");
1159 source_address_length = *pptr;
1162 TCHECK2(*pptr, source_address_length);
1163 if (li < source_address_length) {
1164 printf(", bad ish/li");
1167 printf("\n\t NET (length: %u): %s", source_address_length, isonsap_string(pptr, source_address_length));
1168 pptr += source_address_length;
1169 li -= source_address_length;
1176 print_unknown_data(pptr,"\n\t ",snapend-pptr);
1181 /* now walk the options */
1184 const u_int8_t *tptr;
1188 printf(", bad opts/li");
1195 printf(", opt (%d) too long", op);
1201 printf("\n\t %s Option #%u, length %u, value: ",
1202 tok2str(esis_option_values,"Unknown",op),
1208 case ESIS_OPTION_ES_CONF_TIME:
1210 printf("%us", EXTRACT_16BITS(tptr));
1213 case ESIS_OPTION_PROTOCOLS:
1216 printf("%s (0x%02x)",
1217 tok2str(nlpid_values,
1221 if (opli>1) /* further NPLIDs ? - put comma */
1229 * FIXME those are the defined Options that lack a decoder
1230 * you are welcome to contribute code ;-)
1233 case ESIS_OPTION_QOS_MAINTENANCE:
1234 case ESIS_OPTION_SECURITY:
1235 case ESIS_OPTION_PRIORITY:
1236 case ESIS_OPTION_ADDRESS_MASK:
1237 case ESIS_OPTION_SNPA_MASK:
1240 print_unknown_data(tptr,"\n\t ",opli);
1244 print_unknown_data(pptr,"\n\t ",opli);
1251 /* shared routine for printing system, node and lsp-ids */
1253 isis_print_id(const u_int8_t *cp, int id_len)
1256 static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")];
1259 for (i = 1; i <= SYSTEM_ID_LEN; i++) {
1260 snprintf(pos, sizeof(id) - (pos - id), "%02x", *cp++);
1262 if (i == 2 || i == 4)
1265 if (id_len >= NODE_ID_LEN) {
1266 snprintf(pos, sizeof(id) - (pos - id), ".%02x", *cp++);
1269 if (id_len == LSP_ID_LEN)
1270 snprintf(pos, sizeof(id) - (pos - id), "-%02x", *cp);
1274 /* print the 4-byte metric block which is common found in the old-style TLVs */
1276 isis_print_metric_block (const struct isis_metric_block *isis_metric_block)
1278 printf(", Default Metric: %d, %s",
1279 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
1280 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal");
1281 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
1282 printf("\n\t\t Delay Metric: %d, %s",
1283 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
1284 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal");
1285 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
1286 printf("\n\t\t Expense Metric: %d, %s",
1287 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
1288 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal");
1289 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
1290 printf("\n\t\t Error Metric: %d, %s",
1291 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
1292 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal");
1294 return(1); /* everything is ok */
1298 isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length)
1301 const struct isis_tlv_ip_reach *tlv_ip_reach;
1303 tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
1305 while (length > 0) {
1306 if ((size_t)length < sizeof(*tlv_ip_reach)) {
1307 printf("short IPv4 Reachability (%d vs %lu)",
1309 (unsigned long)sizeof(*tlv_ip_reach));
1313 if (!TTEST(*tlv_ip_reach))
1316 prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
1318 if (prefix_len == -1)
1319 printf("%sIPv4 prefix: %s mask %s",
1321 ipaddr_string((tlv_ip_reach->prefix)),
1322 ipaddr_string((tlv_ip_reach->mask)));
1324 printf("%sIPv4 prefix: %15s/%u",
1326 ipaddr_string((tlv_ip_reach->prefix)),
1329 printf(", Distribution: %s, Metric: %u, %s",
1330 ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
1331 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
1332 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal");
1334 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
1335 printf("%s Delay Metric: %u, %s",
1337 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
1338 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal");
1340 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
1341 printf("%s Expense Metric: %u, %s",
1343 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
1344 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal");
1346 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
1347 printf("%s Error Metric: %u, %s",
1349 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
1350 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal");
1352 length -= sizeof(struct isis_tlv_ip_reach);
1359 * this is the common IP-REACH subTLV decoder it is called
1360 * from various EXTD-IP REACH TLVs (135,235,236,237)
1364 isis_print_ip_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
1366 /* first lets see if we know the subTLVs name*/
1367 printf("%s%s subTLV #%u, length: %u",
1369 tok2str(isis_ext_ip_reach_subtlv_values,
1375 if (!TTEST2(*tptr,subl))
1379 case ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR: /* fall through */
1380 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32:
1382 printf(", 0x%08x (=%u)",
1383 EXTRACT_32BITS(tptr),
1384 EXTRACT_32BITS(tptr));
1389 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64:
1391 printf(", 0x%08x%08x",
1392 EXTRACT_32BITS(tptr),
1393 EXTRACT_32BITS(tptr+4));
1399 if(!print_unknown_data(tptr,"\n\t\t ",
1407 printf("%spacket exceeded snapshot",ident);
1412 * this is the common IS-REACH subTLV decoder it is called
1413 * from isis_print_ext_is_reach()
1417 isis_print_is_reach_subtlv (const u_int8_t *tptr,u_int subt,u_int subl,const char *ident) {
1419 u_int te_class,priority_level,gmpls_switch_cap;
1420 union { /* int to float conversion buffer for several subTLVs */
1425 /* first lets see if we know the subTLVs name*/
1426 printf("%s%s subTLV #%u, length: %u",
1428 tok2str(isis_ext_is_reach_subtlv_values,
1434 if (!TTEST2(*tptr,subl))
1438 case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
1439 case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
1440 case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
1442 printf(", 0x%08x", EXTRACT_32BITS(tptr));
1443 if (subl == 8) /* rfc4205 */
1444 printf(", 0x%08x", EXTRACT_32BITS(tptr+4));
1447 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
1448 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
1449 if (subl >= sizeof(struct in_addr))
1450 printf(", %s", ipaddr_string(tptr));
1452 case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
1453 case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
1455 bw.i = EXTRACT_32BITS(tptr);
1456 printf(", %.3f Mbps", bw.f*8/1000000 );
1459 case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
1461 for (te_class = 0; te_class < 8; te_class++) {
1462 bw.i = EXTRACT_32BITS(tptr);
1463 printf("%s TE-Class %u: %.3f Mbps",
1471 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS: /* fall through */
1472 case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD:
1473 printf("%sBandwidth Constraints Model ID: %s (%u)",
1475 tok2str(diffserv_te_bc_values, "unknown", *tptr),
1478 /* decode BCs until the subTLV ends */
1479 for (te_class = 0; te_class < (subl-1)/4; te_class++) {
1480 bw.i = EXTRACT_32BITS(tptr);
1481 printf("%s Bandwidth constraint CT%u: %.3f Mbps",
1488 case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC:
1490 printf(", %u", EXTRACT_24BITS(tptr));
1492 case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE:
1494 printf(", [ %s ] (0x%04x)",
1495 bittok2str(isis_subtlv_link_attribute_values,
1497 EXTRACT_16BITS(tptr)),
1498 EXTRACT_16BITS(tptr));
1501 case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
1503 printf(", %s, Priority %u",
1504 bittok2str(gmpls_link_prot_values, "none", *tptr),
1508 case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
1510 gmpls_switch_cap = *tptr;
1511 printf("%s Interface Switching Capability:%s",
1513 tok2str(gmpls_switch_cap_values, "Unknown", gmpls_switch_cap));
1514 printf(", LSP Encoding: %s",
1515 tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
1517 printf("%s Max LSP Bandwidth:",ident);
1518 for (priority_level = 0; priority_level < 8; priority_level++) {
1519 bw.i = EXTRACT_32BITS(tptr);
1520 printf("%s priority level %d: %.3f Mbps",
1527 switch (gmpls_switch_cap) {
1532 bw.i = EXTRACT_32BITS(tptr);
1533 printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
1534 printf("%s Interface MTU: %u", ident, EXTRACT_16BITS(tptr+4));
1537 bw.i = EXTRACT_32BITS(tptr);
1538 printf("%s Min LSP Bandwidth: %.3f Mbps", ident, bw.f*8/1000000);
1539 printf("%s Indication %s", ident,
1540 tok2str(gmpls_switch_cap_tsc_indication_values, "Unknown (%u)", *(tptr+4)));
1543 /* there is some optional stuff left to decode but this is as of yet
1544 not specified so just lets hexdump what is left */
1546 if(!print_unknown_data(tptr,"\n\t\t ",
1554 if(!print_unknown_data(tptr,"\n\t\t ",
1562 printf("%spacket exceeded snapshot",ident);
1568 * this is the common IS-REACH decoder it is called
1569 * from various EXTD-IS REACH style TLVs (22,24,222)
1573 isis_print_ext_is_reach (const u_int8_t *tptr,const char *ident, int tlv_type) {
1575 char ident_buffer[20];
1576 int subtlv_type,subtlv_len,subtlv_sum_len;
1577 int proc_bytes = 0; /* how many bytes did we process ? */
1579 if (!TTEST2(*tptr, NODE_ID_LEN))
1582 printf("%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN));
1583 tptr+=(NODE_ID_LEN);
1585 if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */
1586 if (!TTEST2(*tptr, 3)) /* and is therefore skipped */
1588 printf(", Metric: %d",EXTRACT_24BITS(tptr));
1592 if (!TTEST2(*tptr, 1))
1594 subtlv_sum_len=*(tptr++); /* read out subTLV length */
1595 proc_bytes=NODE_ID_LEN+3+1;
1596 printf(", %ssub-TLVs present",subtlv_sum_len ? "" : "no ");
1597 if (subtlv_sum_len) {
1598 printf(" (%u)",subtlv_sum_len);
1599 while (subtlv_sum_len>0) {
1600 if (!TTEST2(*tptr,2))
1602 subtlv_type=*(tptr++);
1603 subtlv_len=*(tptr++);
1604 /* prepend the ident string */
1605 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1606 if(!isis_print_is_reach_subtlv(tptr,subtlv_type,subtlv_len,ident_buffer))
1609 subtlv_sum_len-=(subtlv_len+2);
1610 proc_bytes+=(subtlv_len+2);
1617 * this is the common Multi Topology ID decoder
1618 * it is called from various MT-TLVs (222,229,235,237)
1622 isis_print_mtid (const u_int8_t *tptr,const char *ident) {
1624 if (!TTEST2(*tptr, 2))
1629 tok2str(isis_mt_values,
1630 "Reserved for IETF Consensus",
1631 ISIS_MASK_MTID(EXTRACT_16BITS(tptr))));
1633 printf(" Topology (0x%03x), Flags: [%s]",
1634 ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
1635 bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr))));
1641 * this is the common extended IP reach decoder
1642 * it is called from TLVs (135,235,236,237)
1643 * we process the TLV and optional subTLVs and return
1644 * the amount of processed bytes
1648 isis_print_extd_ip_reach (const u_int8_t *tptr, const char *ident, u_int16_t afi) {
1650 char ident_buffer[20];
1652 u_int8_t prefix[sizeof(struct in6_addr)]; /* shared copy buffer for IPv4 and IPv6 prefixes */
1654 u_int8_t prefix[sizeof(struct in_addr)]; /* shared copy buffer for IPv4 prefixes */
1656 u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
1658 if (!TTEST2(*tptr, 4))
1660 metric = EXTRACT_32BITS(tptr);
1664 if (afi == AF_INET) {
1665 if (!TTEST2(*tptr, 1)) /* fetch status byte */
1667 status_byte=*(tptr++);
1668 bit_length = status_byte&0x3f;
1669 if (bit_length > 32) {
1670 printf("%sIPv4 prefix: bad bit length %u",
1677 } else if (afi == AF_INET6) {
1678 if (!TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
1680 status_byte=*(tptr++);
1681 bit_length=*(tptr++);
1682 if (bit_length > 128) {
1683 printf("%sIPv6 prefix: bad bit length %u",
1691 return (0); /* somebody is fooling us */
1693 byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
1695 if (!TTEST2(*tptr, byte_length))
1697 memset(prefix, 0, sizeof prefix); /* clear the copy buffer */
1698 memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
1700 processed+=byte_length;
1703 printf("%sIPv4 prefix: %15s/%u",
1705 ipaddr_string(prefix),
1708 if (afi == AF_INET6)
1709 printf("%sIPv6 prefix: %s/%u",
1711 ip6addr_string(prefix),
1715 printf(", Distribution: %s, Metric: %u",
1716 ISIS_MASK_TLV_EXTD_IP_UPDOWN(status_byte) ? "down" : "up",
1719 if (afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1720 printf(", sub-TLVs present");
1722 if (afi == AF_INET6)
1724 ISIS_MASK_TLV_EXTD_IP6_IE(status_byte) ? "External" : "Internal",
1725 ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : "");
1728 if ((afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1730 || (afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte))
1733 /* assume that one prefix can hold more
1734 than one subTLV - therefore the first byte must reflect
1735 the aggregate bytecount of the subTLVs for this prefix
1737 if (!TTEST2(*tptr, 1))
1740 processed+=sublen+1;
1741 printf(" (%u)",sublen); /* print out subTLV length */
1744 if (!TTEST2(*tptr,2))
1746 subtlvtype=*(tptr++);
1747 subtlvlen=*(tptr++);
1748 /* prepend the ident string */
1749 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1750 if(!isis_print_ip_reach_subtlv(tptr,subtlvtype,subtlvlen,ident_buffer))
1753 sublen-=(subtlvlen+2);
1761 * Decode IS-IS packets. Return 0 on error.
1764 static int isis_print (const u_int8_t *p, u_int length)
1766 const struct isis_common_header *isis_header;
1768 const struct isis_iih_lan_header *header_iih_lan;
1769 const struct isis_iih_ptp_header *header_iih_ptp;
1770 struct isis_lsp_header *header_lsp;
1771 const struct isis_csnp_header *header_csnp;
1772 const struct isis_psnp_header *header_psnp;
1774 const struct isis_tlv_lsp *tlv_lsp;
1775 const struct isis_tlv_ptp_adj *tlv_ptp_adj;
1776 const struct isis_tlv_is_reach *tlv_is_reach;
1777 const struct isis_tlv_es_reach *tlv_es_reach;
1779 u_int8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
1780 u_int8_t ext_is_len, ext_ip_len, mt_len;
1781 const u_int8_t *optr, *pptr, *tptr;
1782 u_short packet_len,pdu_len;
1787 optr = p; /* initialize the _o_riginal pointer to the packet start -
1788 need it for parsing the checksum TLV and authentication
1790 isis_header = (const struct isis_common_header *)p;
1791 TCHECK(*isis_header);
1792 pptr = p+(ISIS_COMMON_HEADER_SIZE);
1793 header_iih_lan = (const struct isis_iih_lan_header *)pptr;
1794 header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
1795 header_lsp = (struct isis_lsp_header *)pptr;
1796 header_csnp = (const struct isis_csnp_header *)pptr;
1797 header_psnp = (const struct isis_psnp_header *)pptr;
1803 * Sanity checking of the header.
1806 if (isis_header->version != ISIS_VERSION) {
1807 printf("version %d packet not supported", isis_header->version);
1811 if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) {
1812 printf("system ID length of %d is not supported",
1813 isis_header->id_length);
1817 if (isis_header->pdu_version != ISIS_VERSION) {
1818 printf("version %d packet not supported", isis_header->pdu_version);
1822 max_area = isis_header->max_area;
1825 max_area = 3; /* silly shit */
1828 printf("bad packet -- 255 areas");
1834 id_length = isis_header->id_length;
1837 id_length = 6; /* silly shit again */
1839 case 1: /* 1-8 are valid sys-ID lenghts */
1849 id_length = 0; /* entirely useless */
1855 /* toss any non 6-byte sys-ID len PDUs */
1856 if (id_length != 6 ) {
1857 printf("bad packet -- illegal sys-ID length (%u)", id_length);
1861 pdu_type=isis_header->pdu_type;
1863 /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
1867 tok2str(isis_pdu_values,"unknown PDU-Type %u",pdu_type));
1871 case ISIS_PDU_L1_LAN_IIH:
1872 case ISIS_PDU_L2_LAN_IIH:
1873 printf(", src-id %s",
1874 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN));
1875 printf(", lan-id %s, prio %u",
1876 isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN),
1877 header_iih_lan->priority);
1879 case ISIS_PDU_PTP_IIH:
1880 printf(", src-id %s", isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN));
1882 case ISIS_PDU_L1_LSP:
1883 case ISIS_PDU_L2_LSP:
1884 printf(", lsp-id %s, seq 0x%08x, lifetime %5us",
1885 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
1886 EXTRACT_32BITS(header_lsp->sequence_number),
1887 EXTRACT_16BITS(header_lsp->remaining_lifetime));
1889 case ISIS_PDU_L1_CSNP:
1890 case ISIS_PDU_L2_CSNP:
1891 printf(", src-id %s", isis_print_id(header_csnp->source_id,NODE_ID_LEN));
1893 case ISIS_PDU_L1_PSNP:
1894 case ISIS_PDU_L2_PSNP:
1895 printf(", src-id %s", isis_print_id(header_psnp->source_id,NODE_ID_LEN));
1899 printf(", length %u", length);
1904 /* ok they seem to want to know everything - lets fully decode it */
1905 printf("%slength %u", eflag ? "" : ", ",length);
1907 printf("\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
1908 tok2str(isis_pdu_values,
1911 isis_header->fixed_len,
1912 isis_header->version,
1913 isis_header->pdu_version,
1915 isis_header->id_length,
1917 isis_header->max_area);
1920 if(!print_unknown_data(optr,"\n\t",8)) /* provide the _o_riginal pointer */
1921 return(0); /* for optionally debugging the common header */
1926 case ISIS_PDU_L1_LAN_IIH:
1927 case ISIS_PDU_L2_LAN_IIH:
1928 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
1929 printf(", bogus fixed header length %u should be %lu",
1930 isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE);
1934 pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
1935 if (packet_len>pdu_len) {
1936 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1940 TCHECK(*header_iih_lan);
1941 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1942 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
1943 EXTRACT_16BITS(header_iih_lan->holding_time),
1944 tok2str(isis_iih_circuit_type_values,
1945 "unknown circuit type 0x%02x",
1946 header_iih_lan->circuit_type));
1948 printf("\n\t lan-id: %s, Priority: %u, PDU length: %u",
1949 isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
1950 (header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK,
1954 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_LAN_HEADER_SIZE))
1958 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1959 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1962 case ISIS_PDU_PTP_IIH:
1963 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
1964 printf(", bogus fixed header length %u should be %lu",
1965 isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE);
1969 pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
1970 if (packet_len>pdu_len) {
1971 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1975 TCHECK(*header_iih_ptp);
1976 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1977 isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
1978 EXTRACT_16BITS(header_iih_ptp->holding_time),
1979 tok2str(isis_iih_circuit_type_values,
1980 "unknown circuit type 0x%02x",
1981 header_iih_ptp->circuit_type));
1983 printf("\n\t circuit-id: 0x%02x, PDU length: %u",
1984 header_iih_ptp->circuit_id,
1988 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_PTP_HEADER_SIZE))
1992 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1993 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1996 case ISIS_PDU_L1_LSP:
1997 case ISIS_PDU_L2_LSP:
1998 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
1999 printf(", bogus fixed header length %u should be %lu",
2000 isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE);
2004 pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
2005 if (packet_len>pdu_len) {
2006 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2010 TCHECK(*header_lsp);
2011 printf("\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us\n\t chksum: 0x%04x",
2012 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
2013 EXTRACT_32BITS(header_lsp->sequence_number),
2014 EXTRACT_16BITS(header_lsp->remaining_lifetime),
2015 EXTRACT_16BITS(header_lsp->checksum));
2018 osi_print_cksum((u_int8_t *)header_lsp->lsp_id,
2019 EXTRACT_16BITS(header_lsp->checksum), 12, length-12);
2022 * Clear checksum and lifetime prior to signature verification.
2024 header_lsp->checksum[0] = 0;
2025 header_lsp->checksum[1] = 0;
2026 header_lsp->remaining_lifetime[0] = 0;
2027 header_lsp->remaining_lifetime[1] = 0;
2030 printf(", PDU length: %u, Flags: [ %s",
2032 ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : "");
2034 if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
2035 printf("%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : "");
2036 printf("%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : "");
2037 printf("%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : "");
2038 printf("%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : "");
2039 printf("ATT bit set, ");
2041 printf("%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : "");
2042 printf("%s ]", tok2str(isis_lsp_istype_values,"Unknown(0x%x)",ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock)));
2045 if(!print_unknown_data(pptr,"\n\t ",ISIS_LSP_HEADER_SIZE))
2049 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2050 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
2053 case ISIS_PDU_L1_CSNP:
2054 case ISIS_PDU_L2_CSNP:
2055 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
2056 printf(", bogus fixed header length %u should be %lu",
2057 isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE);
2061 pdu_len=EXTRACT_16BITS(header_csnp->pdu_len);
2062 if (packet_len>pdu_len) {
2063 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2067 TCHECK(*header_csnp);
2068 printf("\n\t source-id: %s, PDU length: %u",
2069 isis_print_id(header_csnp->source_id, NODE_ID_LEN),
2071 printf("\n\t start lsp-id: %s",
2072 isis_print_id(header_csnp->start_lsp_id, LSP_ID_LEN));
2073 printf("\n\t end lsp-id: %s",
2074 isis_print_id(header_csnp->end_lsp_id, LSP_ID_LEN));
2077 if(!print_unknown_data(pptr,"\n\t ",ISIS_CSNP_HEADER_SIZE))
2081 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2082 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2085 case ISIS_PDU_L1_PSNP:
2086 case ISIS_PDU_L2_PSNP:
2087 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) {
2088 printf("- bogus fixed header length %u should be %lu",
2089 isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE);
2093 pdu_len=EXTRACT_16BITS(header_psnp->pdu_len);
2094 if (packet_len>pdu_len) {
2095 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2099 TCHECK(*header_psnp);
2100 printf("\n\t source-id: %s, PDU length: %u",
2101 isis_print_id(header_psnp->source_id, NODE_ID_LEN),
2105 if(!print_unknown_data(pptr,"\n\t ",ISIS_PSNP_HEADER_SIZE))
2109 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2110 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2114 if(!print_unknown_data(pptr,"\n\t ",length))
2120 * Now print the TLV's.
2123 while (packet_len >= 2) {
2124 if (pptr == snapend) {
2128 if (!TTEST2(*pptr, 2)) {
2129 printf("\n\t\t packet exceeded snapshot (%ld) bytes",
2130 (long)(pptr-snapend));
2135 tmp =tlv_len; /* copy temporary len & pointer to packet data */
2138 if (tlv_len > packet_len) {
2142 /* first lets see if we know the TLVs name*/
2143 printf("\n\t %s TLV #%u, length: %u",
2144 tok2str(isis_tlv_values,
2150 if (tlv_len == 0) /* something is malformed */
2153 /* now check if we have a decoder otherwise do a hexdump at the end*/
2155 case ISIS_TLV_AREA_ADDR:
2156 if (!TTEST2(*tptr, 1))
2159 while (tmp && alen < tmp) {
2160 printf("\n\t Area address (length: %u): %s",
2162 isonsap_string(tptr,alen));
2165 if (tmp==0) /* if this is the last area address do not attemt a boundary check */
2167 if (!TTEST2(*tptr, 1))
2172 case ISIS_TLV_ISNEIGH:
2173 while (tmp >= ETHER_ADDR_LEN) {
2174 if (!TTEST2(*tptr, ETHER_ADDR_LEN))
2176 printf("\n\t SNPA: %s",isis_print_id(tptr,ETHER_ADDR_LEN));
2177 tmp -= ETHER_ADDR_LEN;
2178 tptr += ETHER_ADDR_LEN;
2182 case ISIS_TLV_ISNEIGH_VARLEN:
2183 if (!TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */
2185 lan_alen = *tptr++; /* LAN address length */
2186 if (lan_alen == 0) {
2187 printf("\n\t LAN address length 0 bytes (invalid)");
2191 printf("\n\t LAN address length %u bytes ",lan_alen);
2192 while (tmp >= lan_alen) {
2193 if (!TTEST2(*tptr, lan_alen))
2195 printf("\n\t\tIS Neighbor: %s",isis_print_id(tptr,lan_alen));
2201 case ISIS_TLV_PADDING:
2204 case ISIS_TLV_MT_IS_REACH:
2205 mt_len = isis_print_mtid(tptr, "\n\t ");
2206 if (mt_len == 0) /* did something go wrong ? */
2210 while (tmp >= 2+NODE_ID_LEN+3+1) {
2211 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2212 if (ext_is_len == 0) /* did something go wrong ? */
2220 case ISIS_TLV_IS_ALIAS_ID:
2221 while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */
2222 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2223 if (ext_is_len == 0) /* did something go wrong ? */
2230 case ISIS_TLV_EXT_IS_REACH:
2231 while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */
2232 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2233 if (ext_is_len == 0) /* did something go wrong ? */
2239 case ISIS_TLV_IS_REACH:
2240 if (!TTEST2(*tptr,1)) /* check if there is one byte left to read out the virtual flag */
2243 tok2str(isis_is_reach_virtual_values,
2244 "bogus virtual flag 0x%02x",
2246 tlv_is_reach = (const struct isis_tlv_is_reach *)tptr;
2247 while (tmp >= sizeof(struct isis_tlv_is_reach)) {
2248 if (!TTEST(*tlv_is_reach))
2250 printf("\n\t IS Neighbor: %s",
2251 isis_print_id(tlv_is_reach->neighbor_nodeid, NODE_ID_LEN));
2252 isis_print_metric_block(&tlv_is_reach->isis_metric_block);
2253 tmp -= sizeof(struct isis_tlv_is_reach);
2258 case ISIS_TLV_ESNEIGH:
2259 tlv_es_reach = (const struct isis_tlv_es_reach *)tptr;
2260 while (tmp >= sizeof(struct isis_tlv_es_reach)) {
2261 if (!TTEST(*tlv_es_reach))
2263 printf("\n\t ES Neighbor: %s",
2264 isis_print_id(tlv_es_reach->neighbor_sysid,SYSTEM_ID_LEN));
2265 isis_print_metric_block(&tlv_es_reach->isis_metric_block);
2266 tmp -= sizeof(struct isis_tlv_es_reach);
2271 /* those two TLVs share the same format */
2272 case ISIS_TLV_INT_IP_REACH:
2273 case ISIS_TLV_EXT_IP_REACH:
2274 if (!isis_print_tlv_ip_reach(pptr, "\n\t ", tlv_len))
2278 case ISIS_TLV_EXTD_IP_REACH:
2280 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
2281 if (ext_ip_len == 0) /* did something go wrong ? */
2288 case ISIS_TLV_MT_IP_REACH:
2289 mt_len = isis_print_mtid(tptr, "\n\t ");
2290 if (mt_len == 0) { /* did something go wrong ? */
2297 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET);
2298 if (ext_ip_len == 0) /* did something go wrong ? */
2306 case ISIS_TLV_IP6_REACH:
2308 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
2309 if (ext_ip_len == 0) /* did something go wrong ? */
2316 case ISIS_TLV_MT_IP6_REACH:
2317 mt_len = isis_print_mtid(tptr, "\n\t ");
2318 if (mt_len == 0) { /* did something go wrong ? */
2325 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", AF_INET6);
2326 if (ext_ip_len == 0) /* did something go wrong ? */
2333 case ISIS_TLV_IP6ADDR:
2334 while (tmp>=sizeof(struct in6_addr)) {
2335 if (!TTEST2(*tptr, sizeof(struct in6_addr)))
2338 printf("\n\t IPv6 interface address: %s",
2339 ip6addr_string(tptr));
2341 tptr += sizeof(struct in6_addr);
2342 tmp -= sizeof(struct in6_addr);
2347 if (!TTEST2(*tptr, 1))
2351 tok2str(isis_subtlv_auth_values,
2352 "unknown Authentication type 0x%02x",
2356 case ISIS_SUBTLV_AUTH_SIMPLE:
2357 for(i=1;i<tlv_len;i++) {
2358 if (!TTEST2(*(tptr+i), 1))
2360 printf("%c",*(tptr+i));
2363 case ISIS_SUBTLV_AUTH_MD5:
2364 for(i=1;i<tlv_len;i++) {
2365 if (!TTEST2(*(tptr+i), 1))
2367 printf("%02x",*(tptr+i));
2369 if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1)
2370 printf(", (malformed subTLV) ");
2372 #ifdef HAVE_LIBCRYPTO
2373 sigcheck = signature_verify(optr, length,
2374 (unsigned char *)tptr + 1);
2376 sigcheck = CANT_CHECK_SIGNATURE;
2378 printf(" (%s)", tok2str(signature_check_values, "Unknown", sigcheck));
2381 case ISIS_SUBTLV_AUTH_PRIVATE:
2383 if(!print_unknown_data(tptr+1,"\n\t\t ",tlv_len-1))
2389 case ISIS_TLV_PTP_ADJ:
2390 tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr;
2392 if (!TTEST2(*tptr, 1))
2394 printf("\n\t Adjacency State: %s (%u)",
2395 tok2str(isis_ptp_adjancey_values, "unknown", *tptr),
2399 if(tmp>sizeof(tlv_ptp_adj->extd_local_circuit_id)) {
2400 if (!TTEST2(tlv_ptp_adj->extd_local_circuit_id,
2401 sizeof(tlv_ptp_adj->extd_local_circuit_id)))
2403 printf("\n\t Extended Local circuit-ID: 0x%08x",
2404 EXTRACT_32BITS(tlv_ptp_adj->extd_local_circuit_id));
2405 tmp-=sizeof(tlv_ptp_adj->extd_local_circuit_id);
2407 if(tmp>=SYSTEM_ID_LEN) {
2408 if (!TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN))
2410 printf("\n\t Neighbor System-ID: %s",
2411 isis_print_id(tlv_ptp_adj->neighbor_sysid,SYSTEM_ID_LEN));
2414 if(tmp>=sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)) {
2415 if (!TTEST2(tlv_ptp_adj->neighbor_extd_local_circuit_id,
2416 sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)))
2418 printf("\n\t Neighbor Extended Local circuit-ID: 0x%08x",
2419 EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id));
2423 case ISIS_TLV_PROTOCOLS:
2424 printf("\n\t NLPID(s): ");
2426 if (!TTEST2(*(tptr), 1))
2428 printf("%s (0x%02x)",
2429 tok2str(nlpid_values,
2433 if (tmp>1) /* further NPLIDs ? - put comma */
2440 case ISIS_TLV_TE_ROUTER_ID:
2441 if (!TTEST2(*pptr, sizeof(struct in_addr)))
2443 printf("\n\t Traffic Engineering Router ID: %s", ipaddr_string(pptr));
2446 case ISIS_TLV_IPADDR:
2447 while (tmp>=sizeof(struct in_addr)) {
2448 if (!TTEST2(*tptr, sizeof(struct in_addr)))
2450 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2451 tptr += sizeof(struct in_addr);
2452 tmp -= sizeof(struct in_addr);
2456 case ISIS_TLV_HOSTNAME:
2457 printf("\n\t Hostname: ");
2459 if (!TTEST2(*tptr, 1))
2461 printf("%c",*tptr++);
2466 case ISIS_TLV_SHARED_RISK_GROUP:
2467 if (tmp < NODE_ID_LEN)
2469 if (!TTEST2(*tptr, NODE_ID_LEN))
2471 printf("\n\t IS Neighbor: %s", isis_print_id(tptr, NODE_ID_LEN));
2472 tptr+=(NODE_ID_LEN);
2477 if (!TTEST2(*tptr, 1))
2479 printf(", Flags: [%s]", ISIS_MASK_TLV_SHARED_RISK_GROUP(*tptr++) ? "numbered" : "unnumbered");
2482 if (tmp < sizeof(struct in_addr))
2484 if (!TTEST2(*tptr,sizeof(struct in_addr)))
2486 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2487 tptr+=sizeof(struct in_addr);
2488 tmp-=sizeof(struct in_addr);
2490 if (tmp < sizeof(struct in_addr))
2492 if (!TTEST2(*tptr,sizeof(struct in_addr)))
2494 printf("\n\t IPv4 neighbor address: %s", ipaddr_string(tptr));
2495 tptr+=sizeof(struct in_addr);
2496 tmp-=sizeof(struct in_addr);
2499 if (!TTEST2(*tptr, 4))
2501 printf("\n\t Link-ID: 0x%08x", EXTRACT_32BITS(tptr));
2508 tlv_lsp = (const struct isis_tlv_lsp *)tptr;
2509 while(tmp>=sizeof(struct isis_tlv_lsp)) {
2510 if (!TTEST((tlv_lsp->lsp_id)[LSP_ID_LEN-1]))
2512 printf("\n\t lsp-id: %s",
2513 isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN));
2514 if (!TTEST2(tlv_lsp->sequence_number, 4))
2516 printf(", seq: 0x%08x",EXTRACT_32BITS(tlv_lsp->sequence_number));
2517 if (!TTEST2(tlv_lsp->remaining_lifetime, 2))
2519 printf(", lifetime: %5ds",EXTRACT_16BITS(tlv_lsp->remaining_lifetime));
2520 if (!TTEST2(tlv_lsp->checksum, 2))
2522 printf(", chksum: 0x%04x",EXTRACT_16BITS(tlv_lsp->checksum));
2523 tmp-=sizeof(struct isis_tlv_lsp);
2528 case ISIS_TLV_CHECKSUM:
2529 if (tmp < ISIS_TLV_CHECKSUM_MINLEN)
2531 if (!TTEST2(*tptr, ISIS_TLV_CHECKSUM_MINLEN))
2533 printf("\n\t checksum: 0x%04x ", EXTRACT_16BITS(tptr));
2534 /* do not attempt to verify the checksum if it is zero
2535 * most likely a HMAC-MD5 TLV is also present and
2536 * to avoid conflicts the checksum TLV is zeroed.
2537 * see rfc3358 for details
2539 osi_print_cksum(optr, EXTRACT_16BITS(tptr), tptr-optr, length);
2542 case ISIS_TLV_MT_SUPPORTED:
2543 if (tmp < ISIS_TLV_MT_SUPPORTED_MINLEN)
2546 /* length can only be a multiple of 2, otherwise there is
2547 something broken -> so decode down until length is 1 */
2549 mt_len = isis_print_mtid(tptr, "\n\t ");
2550 if (mt_len == 0) /* did something go wrong ? */
2555 printf("\n\t malformed MT-ID");
2561 case ISIS_TLV_RESTART_SIGNALING:
2562 /* first attempt to decode the flags */
2563 if (tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN)
2565 if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_FLAGLEN))
2567 printf("\n\t Flags [%s]",
2568 bittok2str(isis_restart_flag_values, "none", *tptr));
2569 tptr+=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2570 tmp-=ISIS_TLV_RESTART_SIGNALING_FLAGLEN;
2572 /* is there anything other than the flags field? */
2576 if (tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN)
2578 if (!TTEST2(*tptr, ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN))
2581 printf(", Remaining holding time %us", EXTRACT_16BITS(tptr));
2582 tptr+=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2583 tmp-=ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN;
2585 /* is there an additional sysid field present ?*/
2586 if (tmp == SYSTEM_ID_LEN) {
2587 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2589 printf(", for %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2593 case ISIS_TLV_IDRP_INFO:
2594 if (tmp < ISIS_TLV_IDRP_INFO_MINLEN)
2596 if (!TTEST2(*tptr, ISIS_TLV_IDRP_INFO_MINLEN))
2598 printf("\n\t Inter-Domain Information Type: %s",
2599 tok2str(isis_subtlv_idrp_values,
2603 case ISIS_SUBTLV_IDRP_ASN:
2604 if (!TTEST2(*tptr, 2)) /* fetch AS number */
2606 printf("AS Number: %u",EXTRACT_16BITS(tptr));
2608 case ISIS_SUBTLV_IDRP_LOCAL:
2609 case ISIS_SUBTLV_IDRP_RES:
2611 if(!print_unknown_data(tptr,"\n\t ",tlv_len-1))
2617 case ISIS_TLV_LSP_BUFFERSIZE:
2618 if (tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN)
2620 if (!TTEST2(*tptr, ISIS_TLV_LSP_BUFFERSIZE_MINLEN))
2622 printf("\n\t LSP Buffersize: %u",EXTRACT_16BITS(tptr));
2625 case ISIS_TLV_PART_DIS:
2626 while (tmp >= SYSTEM_ID_LEN) {
2627 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2629 printf("\n\t %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2630 tptr+=SYSTEM_ID_LEN;
2635 case ISIS_TLV_PREFIX_NEIGH:
2636 if (tmp < sizeof(struct isis_metric_block))
2638 if (!TTEST2(*tptr, sizeof(struct isis_metric_block)))
2640 printf("\n\t Metric Block");
2641 isis_print_metric_block((const struct isis_metric_block *)tptr);
2642 tptr+=sizeof(struct isis_metric_block);
2643 tmp-=sizeof(struct isis_metric_block);
2646 if (!TTEST2(*tptr, 1))
2648 prefix_len=*tptr++; /* read out prefix length in semioctets*/
2649 if (prefix_len < 2) {
2650 printf("\n\t\tAddress: prefix length %u < 2", prefix_len);
2654 if (tmp < prefix_len/2)
2656 if (!TTEST2(*tptr, prefix_len/2))
2658 printf("\n\t\tAddress: %s/%u",
2659 isonsap_string(tptr,prefix_len/2),
2666 case ISIS_TLV_IIH_SEQNR:
2667 if (tmp < ISIS_TLV_IIH_SEQNR_MINLEN)
2669 if (!TTEST2(*tptr, ISIS_TLV_IIH_SEQNR_MINLEN)) /* check if four bytes are on the wire */
2671 printf("\n\t Sequence number: %u", EXTRACT_32BITS(tptr) );
2674 case ISIS_TLV_VENDOR_PRIVATE:
2675 if (tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN)
2677 if (!TTEST2(*tptr, ISIS_TLV_VENDOR_PRIVATE_MINLEN)) /* check if enough byte for a full oui */
2679 vendor_id = EXTRACT_24BITS(tptr);
2680 printf("\n\t Vendor: %s (%u)",
2681 tok2str(oui_values,"Unknown",vendor_id),
2685 if (tmp > 0) /* hexdump the rest */
2686 if(!print_unknown_data(tptr,"\n\t\t",tmp))
2690 * FIXME those are the defined TLVs that lack a decoder
2691 * you are welcome to contribute code ;-)
2694 case ISIS_TLV_DECNET_PHASE4:
2695 case ISIS_TLV_LUCENT_PRIVATE:
2696 case ISIS_TLV_IPAUTH:
2697 case ISIS_TLV_NORTEL_PRIVATE1:
2698 case ISIS_TLV_NORTEL_PRIVATE2:
2702 if(!print_unknown_data(pptr,"\n\t\t",tlv_len))
2707 /* do we want to see an additionally hexdump ? */
2709 if(!print_unknown_data(pptr,"\n\t ",tlv_len))
2714 packet_len -= tlv_len;
2717 if (packet_len != 0) {
2718 printf("\n\t %u straggler bytes", packet_len);
2723 fputs("[|isis]", stdout);
2727 printf("\n\t\t packet exceeded snapshot");
2732 osi_print_cksum (const u_int8_t *pptr, u_int16_t checksum,
2733 u_int checksum_offset, u_int length)
2735 u_int16_t calculated_checksum;
2737 /* do not attempt to verify the checksum if it is zero */
2739 printf("(unverified)");
2741 calculated_checksum = create_osi_cksum(pptr, checksum_offset, length);
2742 if (checksum == calculated_checksum) {
2743 printf(" (correct)");
2745 printf(" (incorrect should be 0x%04x)", calculated_checksum);
2752 * c-style: whitesmith