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 1.133.2.12 2005/06/16 01:14:52 guy Exp $ (LBL)";
38 #include <tcpdump-stdinc.h>
43 #include "interface.h"
44 #include "addrtoname.h"
45 #include "ethertype.h"
52 #define IPV4 1 /* AFI value */
53 #define IPV6 2 /* AFI value */
56 * IS-IS is defined in ISO 10589. Look there for protocol definitions.
59 #define SYSTEM_ID_LEN ETHER_ADDR_LEN
60 #define NODE_ID_LEN SYSTEM_ID_LEN+1
61 #define LSP_ID_LEN SYSTEM_ID_LEN+2
63 #define ISIS_VERSION 1
64 #define ESIS_VERSION 1
65 #define CLNP_VERSION 1
67 #define ISIS_PDU_TYPE_MASK 0x1F
68 #define ESIS_PDU_TYPE_MASK 0x1F
69 #define CLNP_PDU_TYPE_MASK 0x1F
70 #define CLNP_FLAG_MASK 0xE0
71 #define ISIS_LAN_PRIORITY_MASK 0x7F
73 #define ISIS_PDU_L1_LAN_IIH 15
74 #define ISIS_PDU_L2_LAN_IIH 16
75 #define ISIS_PDU_PTP_IIH 17
76 #define ISIS_PDU_L1_LSP 18
77 #define ISIS_PDU_L2_LSP 20
78 #define ISIS_PDU_L1_CSNP 24
79 #define ISIS_PDU_L2_CSNP 25
80 #define ISIS_PDU_L1_PSNP 26
81 #define ISIS_PDU_L2_PSNP 27
83 static struct tok isis_pdu_values[] = {
84 { ISIS_PDU_L1_LAN_IIH, "L1 Lan IIH"},
85 { ISIS_PDU_L2_LAN_IIH, "L2 Lan IIH"},
86 { ISIS_PDU_PTP_IIH, "p2p IIH"},
87 { ISIS_PDU_L1_LSP, "L1 LSP"},
88 { ISIS_PDU_L2_LSP, "L2 LSP"},
89 { ISIS_PDU_L1_CSNP, "L1 CSNP"},
90 { ISIS_PDU_L2_CSNP, "L2 CSNP"},
91 { ISIS_PDU_L1_PSNP, "L1 PSNP"},
92 { ISIS_PDU_L2_PSNP, "L2 PSNP"},
97 * A TLV is a tuple of a type, length and a value and is normally used for
98 * encoding information in all sorts of places. This is an enumeration of
99 * the well known types.
101 * list taken from rfc3359 plus some memory from veterans ;-)
104 #define ISIS_TLV_AREA_ADDR 1 /* iso10589 */
105 #define ISIS_TLV_IS_REACH 2 /* iso10589 */
106 #define ISIS_TLV_ESNEIGH 3 /* iso10589 */
107 #define ISIS_TLV_PART_DIS 4 /* iso10589 */
108 #define ISIS_TLV_PREFIX_NEIGH 5 /* iso10589 */
109 #define ISIS_TLV_ISNEIGH 6 /* iso10589 */
110 #define ISIS_TLV_ISNEIGH_VARLEN 7 /* iso10589 */
111 #define ISIS_TLV_PADDING 8 /* iso10589 */
112 #define ISIS_TLV_LSP 9 /* iso10589 */
113 #define ISIS_TLV_AUTH 10 /* iso10589, rfc3567 */
114 #define ISIS_TLV_CHECKSUM 12 /* rfc3358 */
115 #define ISIS_TLV_LSP_BUFFERSIZE 14 /* iso10589 rev2 */
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_IPADDR 132 /* rfc1195 */
125 #define ISIS_TLV_IPAUTH 133 /* rfc1195 */
126 #define ISIS_TLV_TE_ROUTER_ID 134 /* draft-ietf-isis-traffic-05 */
127 #define ISIS_TLV_EXTD_IP_REACH 135 /* draft-ietf-isis-traffic-05 */
128 #define ISIS_TLV_HOSTNAME 137 /* rfc2763 */
129 #define ISIS_TLV_SHARED_RISK_GROUP 138 /* draft-ietf-isis-gmpls-extensions */
130 #define ISIS_TLV_NORTEL_PRIVATE1 176
131 #define ISIS_TLV_NORTEL_PRIVATE2 177
132 #define ISIS_TLV_RESTART_SIGNALING 211 /* rfc3847 */
133 #define ISIS_TLV_MT_IS_REACH 222 /* draft-ietf-isis-wg-multi-topology-05 */
134 #define ISIS_TLV_MT_SUPPORTED 229 /* draft-ietf-isis-wg-multi-topology-05 */
135 #define ISIS_TLV_IP6ADDR 232 /* draft-ietf-isis-ipv6-02 */
136 #define ISIS_TLV_MT_IP_REACH 235 /* draft-ietf-isis-wg-multi-topology-05 */
137 #define ISIS_TLV_IP6_REACH 236 /* draft-ietf-isis-ipv6-02 */
138 #define ISIS_TLV_MT_IP6_REACH 237 /* draft-ietf-isis-wg-multi-topology-05 */
139 #define ISIS_TLV_PTP_ADJ 240 /* rfc3373 */
140 #define ISIS_TLV_IIH_SEQNR 241 /* draft-shen-isis-iih-sequence-00 */
141 #define ISIS_TLV_VENDOR_PRIVATE 250 /* draft-ietf-isis-experimental-tlv-01 */
143 static struct tok isis_tlv_values[] = {
144 { ISIS_TLV_AREA_ADDR, "Area address(es)"},
145 { ISIS_TLV_IS_REACH, "IS Reachability"},
146 { ISIS_TLV_ESNEIGH, "ES Neighbor(s)"},
147 { ISIS_TLV_PART_DIS, "Partition DIS"},
148 { ISIS_TLV_PREFIX_NEIGH, "Prefix Neighbors"},
149 { ISIS_TLV_ISNEIGH, "IS Neighbor(s)"},
150 { ISIS_TLV_ISNEIGH_VARLEN, "IS Neighbor(s) (variable length)"},
151 { ISIS_TLV_PADDING, "Padding"},
152 { ISIS_TLV_LSP, "LSP entries"},
153 { ISIS_TLV_AUTH, "Authentication"},
154 { ISIS_TLV_CHECKSUM, "Checksum"},
155 { ISIS_TLV_LSP_BUFFERSIZE, "LSP Buffersize"},
156 { ISIS_TLV_EXT_IS_REACH, "Extended IS Reachability"},
157 { ISIS_TLV_IS_ALIAS_ID, "IS Alias ID"},
158 { ISIS_TLV_DECNET_PHASE4, "DECnet Phase IV"},
159 { ISIS_TLV_LUCENT_PRIVATE, "Lucent Proprietary"},
160 { ISIS_TLV_INT_IP_REACH, "IPv4 Internal Reachability"},
161 { ISIS_TLV_PROTOCOLS, "Protocols supported"},
162 { ISIS_TLV_EXT_IP_REACH, "IPv4 External Reachability"},
163 { ISIS_TLV_IDRP_INFO, "Inter-Domain Information Type"},
164 { ISIS_TLV_IPADDR, "IPv4 Interface address(es)"},
165 { ISIS_TLV_IPAUTH, "IPv4 authentication (deprecated)"},
166 { ISIS_TLV_TE_ROUTER_ID, "Traffic Engineering Router ID"},
167 { ISIS_TLV_EXTD_IP_REACH, "Extended IPv4 Reachability"},
168 { ISIS_TLV_SHARED_RISK_GROUP, "Shared Risk Link Group"},
169 { ISIS_TLV_NORTEL_PRIVATE1, "Nortel Proprietary"},
170 { ISIS_TLV_NORTEL_PRIVATE2, "Nortel Proprietary"},
171 { ISIS_TLV_HOSTNAME, "Hostname"},
172 { ISIS_TLV_RESTART_SIGNALING, "Restart Signaling"},
173 { ISIS_TLV_MT_IS_REACH, "Multi Topology IS Reachability"},
174 { ISIS_TLV_MT_SUPPORTED, "Multi Topology"},
175 { ISIS_TLV_IP6ADDR, "IPv6 Interface address(es)"},
176 { ISIS_TLV_MT_IP_REACH, "Multi-Topology IPv4 Reachability"},
177 { ISIS_TLV_IP6_REACH, "IPv6 reachability"},
178 { ISIS_TLV_MT_IP6_REACH, "Multi-Topology IP6 Reachability"},
179 { ISIS_TLV_PTP_ADJ, "Point-to-point Adjacency State"},
180 { ISIS_TLV_IIH_SEQNR, "Hello PDU Sequence Number"},
181 { ISIS_TLV_VENDOR_PRIVATE, "Vendor Private"},
185 #define ESIS_OPTION_PROTOCOLS 129
186 #define ESIS_OPTION_QOS_MAINTENANCE 195 /* iso9542 */
187 #define ESIS_OPTION_SECURITY 197 /* iso9542 */
188 #define ESIS_OPTION_ES_CONF_TIME 198 /* iso9542 */
189 #define ESIS_OPTION_PRIORITY 205 /* iso9542 */
190 #define ESIS_OPTION_ADDRESS_MASK 225 /* iso9542 */
191 #define ESIS_OPTION_SNPA_MASK 226 /* iso9542 */
193 static struct tok esis_option_values[] = {
194 { ESIS_OPTION_PROTOCOLS, "Protocols supported"},
195 { ESIS_OPTION_QOS_MAINTENANCE, "QoS Maintenance" },
196 { ESIS_OPTION_SECURITY, "Security" },
197 { ESIS_OPTION_ES_CONF_TIME, "ES Configuration Time" },
198 { ESIS_OPTION_PRIORITY, "Priority" },
199 { ESIS_OPTION_ADDRESS_MASK, "Addressk Mask" },
200 { ESIS_OPTION_SNPA_MASK, "SNPA Mask" },
204 #define CLNP_OPTION_DISCARD_REASON 193
205 #define CLNP_OPTION_QOS_MAINTENANCE 195 /* iso8473 */
206 #define CLNP_OPTION_SECURITY 197 /* iso8473 */
207 #define CLNP_OPTION_SOURCE_ROUTING 200 /* iso8473 */
208 #define CLNP_OPTION_ROUTE_RECORDING 203 /* iso8473 */
209 #define CLNP_OPTION_PADDING 204 /* iso8473 */
210 #define CLNP_OPTION_PRIORITY 205 /* iso8473 */
212 static struct tok clnp_option_values[] = {
213 { CLNP_OPTION_DISCARD_REASON, "Discard Reason"},
214 { CLNP_OPTION_PRIORITY, "Priority"},
215 { CLNP_OPTION_QOS_MAINTENANCE, "QoS Maintenance"},
216 { CLNP_OPTION_SECURITY, "Security"},
217 { CLNP_OPTION_SOURCE_ROUTING, "Source Routing"},
218 { CLNP_OPTION_ROUTE_RECORDING, "Route Recording"},
219 { CLNP_OPTION_PADDING, "Padding"},
223 static struct tok clnp_option_rfd_class_values[] = {
226 { 0x9, "Source Routeing"},
228 { 0xb, "PDU Discarded"},
229 { 0xc, "Reassembly"},
233 static struct tok clnp_option_rfd_general_values[] = {
234 { 0x0, "Reason not specified"},
235 { 0x1, "Protocol procedure error"},
236 { 0x2, "Incorrect checksum"},
237 { 0x3, "PDU discarded due to congestion"},
238 { 0x4, "Header syntax error (cannot be parsed)"},
239 { 0x5, "Segmentation needed but not permitted"},
240 { 0x6, "Incomplete PDU received"},
241 { 0x7, "Duplicate option"},
245 static struct tok clnp_option_rfd_address_values[] = {
246 { 0x0, "Destination address unreachable"},
247 { 0x1, "Destination address unknown"},
251 static struct tok clnp_option_rfd_source_routeing_values[] = {
252 { 0x0, "Unspecified source routeing error"},
253 { 0x1, "Syntax error in source routeing field"},
254 { 0x2, "Unknown address in source routeing field"},
255 { 0x3, "Path not acceptable"},
259 static struct tok clnp_option_rfd_lifetime_values[] = {
260 { 0x0, "Lifetime expired while data unit in transit"},
261 { 0x1, "Lifetime expired during reassembly"},
265 static struct tok clnp_option_rfd_pdu_discard_values[] = {
266 { 0x0, "Unsupported option not specified"},
267 { 0x1, "Unsupported protocol version"},
268 { 0x2, "Unsupported security option"},
269 { 0x3, "Unsupported source routeing option"},
270 { 0x4, "Unsupported recording of route option"},
274 static struct tok clnp_option_rfd_reassembly_values[] = {
275 { 0x0, "Reassembly interference"},
279 /* array of 16 error-classes */
280 static struct tok *clnp_option_rfd_error_class[] = {
281 clnp_option_rfd_general_values,
289 clnp_option_rfd_address_values,
290 clnp_option_rfd_source_routeing_values,
291 clnp_option_rfd_lifetime_values,
292 clnp_option_rfd_pdu_discard_values,
293 clnp_option_rfd_reassembly_values,
299 #define CLNP_OPTION_OPTION_QOS_MASK 0x3f
300 #define CLNP_OPTION_SCOPE_MASK 0xc0
301 #define CLNP_OPTION_SCOPE_SA_SPEC 0x40
302 #define CLNP_OPTION_SCOPE_DA_SPEC 0x80
303 #define CLNP_OPTION_SCOPE_GLOBAL 0xc0
305 static struct tok clnp_option_scope_values[] = {
306 { CLNP_OPTION_SCOPE_SA_SPEC, "Source Address Specific"},
307 { CLNP_OPTION_SCOPE_DA_SPEC, "Destination Address Specific"},
308 { CLNP_OPTION_SCOPE_GLOBAL, "Globally unique"},
312 static struct tok clnp_option_sr_rr_values[] = {
318 static struct tok clnp_option_sr_rr_string_values[] = {
319 { CLNP_OPTION_SOURCE_ROUTING, "source routing"},
320 { CLNP_OPTION_ROUTE_RECORDING, "recording of route in progress"},
324 static struct tok clnp_option_qos_global_values[] = {
326 { 0x10, "sequencing vs. delay"},
327 { 0x08, "congested"},
328 { 0x04, "delay vs. cost"},
329 { 0x02, "error vs. delay"},
330 { 0x01, "error vs. cost"},
334 #define ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP 3 /* draft-ietf-isis-traffic-05 */
335 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID 4 /* draft-ietf-isis-gmpls-extensions */
336 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID 5 /* draft-ietf-isis-traffic-05 */
337 #define ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR 6 /* draft-ietf-isis-traffic-05 */
338 #define ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR 8 /* draft-ietf-isis-traffic-05 */
339 #define ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW 9 /* draft-ietf-isis-traffic-05 */
340 #define ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW 10 /* draft-ietf-isis-traffic-05 */
341 #define ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW 11 /* draft-ietf-isis-traffic-05 */
342 #define ISIS_SUBTLV_EXT_IS_REACH_DIFFSERV_TE 12 /* draft-ietf-tewg-diff-te-proto-06 */
343 #define ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC 18 /* draft-ietf-isis-traffic-05 */
344 #define ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE 20 /* draft-ietf-isis-gmpls-extensions */
345 #define ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR 21 /* draft-ietf-isis-gmpls-extensions */
347 static struct tok isis_ext_is_reach_subtlv_values[] = {
348 { ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP, "Administrative groups" },
349 { ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" },
350 { ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID, "Link Remote Identifier" },
351 { ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR, "IPv4 interface address" },
352 { ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR, "IPv4 neighbor address" },
353 { ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW, "Maximum link bandwidth" },
354 { ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW, "Reservable link bandwidth" },
355 { ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW, "Unreserved bandwidth" },
356 { ISIS_SUBTLV_EXT_IS_REACH_DIFFSERV_TE, "Diffserv TE" },
357 { ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC, "Traffic Engineering Metric" },
358 { ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE, "Link Protection Type" },
359 { ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR, "Interface Switching Capability" },
360 { 250, "Reserved for cisco specific extensions" },
361 { 251, "Reserved for cisco specific extensions" },
362 { 252, "Reserved for cisco specific extensions" },
363 { 253, "Reserved for cisco specific extensions" },
364 { 254, "Reserved for cisco specific extensions" },
365 { 255, "Reserved for future expansion" },
369 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32 1 /* draft-ietf-isis-admin-tags-01 */
370 #define ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64 2 /* draft-ietf-isis-admin-tags-01 */
371 #define ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR 117 /* draft-ietf-isis-wg-multi-topology-05 */
373 static struct tok isis_ext_ip_reach_subtlv_values[] = {
374 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32, "32-Bit Administrative tag" },
375 { ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64, "64-Bit Administrative tag" },
376 { ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR, "Management Prefix Color" },
380 #define ISIS_SUBTLV_AUTH_SIMPLE 1
381 #define ISIS_SUBTLV_AUTH_MD5 54
382 #define ISIS_SUBTLV_AUTH_MD5_LEN 16
383 #define ISIS_SUBTLV_AUTH_PRIVATE 255
385 static struct tok isis_subtlv_auth_values[] = {
386 { ISIS_SUBTLV_AUTH_SIMPLE, "simple text password"},
387 { ISIS_SUBTLV_AUTH_MD5, "HMAC-MD5 password"},
388 { ISIS_SUBTLV_AUTH_PRIVATE, "Routing Domain private password"},
392 #define ISIS_SUBTLV_IDRP_RES 0
393 #define ISIS_SUBTLV_IDRP_LOCAL 1
394 #define ISIS_SUBTLV_IDRP_ASN 2
396 static struct tok isis_subtlv_idrp_values[] = {
397 { ISIS_SUBTLV_IDRP_RES, "Reserved"},
398 { ISIS_SUBTLV_IDRP_LOCAL, "Routing-Domain Specific"},
399 { ISIS_SUBTLV_IDRP_ASN, "AS Number Tag"},
403 #define CLNP_SEGMENT_PART 0x80
404 #define CLNP_MORE_SEGMENTS 0x40
405 #define CLNP_REQUEST_ER 0x20
407 static struct tok clnp_flag_values[] = {
408 { CLNP_SEGMENT_PART, "Segmentation permitted"},
409 { CLNP_MORE_SEGMENTS, "more Segments"},
410 { CLNP_REQUEST_ER, "request Error Report"},
414 #define ISIS_MASK_LSP_OL_BIT(x) ((x)&0x4)
415 #define ISIS_MASK_LSP_ISTYPE_BITS(x) ((x)&0x3)
416 #define ISIS_MASK_LSP_PARTITION_BIT(x) ((x)&0x80)
417 #define ISIS_MASK_LSP_ATT_BITS(x) ((x)&0x78)
418 #define ISIS_MASK_LSP_ATT_ERROR_BIT(x) ((x)&0x40)
419 #define ISIS_MASK_LSP_ATT_EXPENSE_BIT(x) ((x)&0x20)
420 #define ISIS_MASK_LSP_ATT_DELAY_BIT(x) ((x)&0x10)
421 #define ISIS_MASK_LSP_ATT_DEFAULT_BIT(x) ((x)&0x8)
423 #define ISIS_MASK_MTID(x) ((x)&0x0fff)
424 #define ISIS_MASK_MTFLAGS(x) ((x)&0xf000)
426 static struct tok isis_mt_flag_values[] = {
427 { 0x4000, "sub-TLVs present"},
428 { 0x8000, "ATT bit set"},
432 #define ISIS_MASK_TLV_EXTD_IP_UPDOWN(x) ((x)&0x80)
433 #define ISIS_MASK_TLV_EXTD_IP_SUBTLV(x) ((x)&0x40)
435 #define ISIS_MASK_TLV_EXTD_IP6_IE(x) ((x)&0x40)
436 #define ISIS_MASK_TLV_EXTD_IP6_SUBTLV(x) ((x)&0x20)
438 #define ISIS_LSP_TLV_METRIC_SUPPORTED(x) ((x)&0x80)
439 #define ISIS_LSP_TLV_METRIC_IE(x) ((x)&0x40)
440 #define ISIS_LSP_TLV_METRIC_UPDOWN(x) ((x)&0x80)
441 #define ISIS_LSP_TLV_METRIC_VALUE(x) ((x)&0x3f)
443 #define ISIS_MASK_TLV_SHARED_RISK_GROUP(x) ((x)&0x1)
445 static struct tok isis_mt_values[] = {
446 { 0, "IPv4 unicast"},
447 { 1, "In-Band Management"},
448 { 2, "IPv6 unicast"},
450 { 4095, "Development, Experimental or Proprietary"},
454 static struct tok isis_iih_circuit_type_values[] = {
455 { 1, "Level 1 only"},
456 { 2, "Level 2 only"},
457 { 3, "Level 1, Level 2"},
461 #define ISIS_LSP_TYPE_UNUSED0 0
462 #define ISIS_LSP_TYPE_LEVEL_1 1
463 #define ISIS_LSP_TYPE_UNUSED2 2
464 #define ISIS_LSP_TYPE_LEVEL_2 3
466 static struct tok isis_lsp_istype_values[] = {
467 { ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
468 { ISIS_LSP_TYPE_LEVEL_1, "L1 IS"},
469 { ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
470 { ISIS_LSP_TYPE_LEVEL_2, "L1L2 IS"},
475 * Katz's point to point adjacency TLV uses codes to tell us the state of
476 * the remote adjacency. Enumerate them.
479 #define ISIS_PTP_ADJ_UP 0
480 #define ISIS_PTP_ADJ_INIT 1
481 #define ISIS_PTP_ADJ_DOWN 2
483 static struct tok isis_ptp_adjancey_values[] = {
484 { ISIS_PTP_ADJ_UP, "Up" },
485 { ISIS_PTP_ADJ_INIT, "Initializing" },
486 { ISIS_PTP_ADJ_DOWN, "Down" },
490 struct isis_tlv_ptp_adj {
491 u_int8_t adjacency_state;
492 u_int8_t extd_local_circuit_id[4];
493 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
494 u_int8_t neighbor_extd_local_circuit_id[4];
497 static int osi_cksum(const u_int8_t *, u_int);
498 static int clnp_print(const u_int8_t *, u_int);
499 static void esis_print(const u_int8_t *, u_int);
500 static int isis_print(const u_int8_t *, u_int);
502 struct isis_metric_block {
503 u_int8_t metric_default;
504 u_int8_t metric_delay;
505 u_int8_t metric_expense;
506 u_int8_t metric_error;
509 struct isis_tlv_is_reach {
510 struct isis_metric_block isis_metric_block;
511 u_int8_t neighbor_nodeid[NODE_ID_LEN];
514 struct isis_tlv_es_reach {
515 struct isis_metric_block isis_metric_block;
516 u_int8_t neighbor_sysid[SYSTEM_ID_LEN];
519 struct isis_tlv_ip_reach {
520 struct isis_metric_block isis_metric_block;
525 static struct tok isis_is_reach_virtual_values[] = {
526 { 0, "IsNotVirtual"},
531 static struct tok isis_restart_flag_values[] = {
532 { 0x1, "Restart Request"},
533 { 0x2, "Restart Acknowledgement"},
534 { 0x4, "Suppress adjacency advertisement"},
538 struct isis_common_header {
541 u_int8_t version; /* Protocol version */
543 u_int8_t pdu_type; /* 3 MSbits are reserved */
544 u_int8_t pdu_version; /* Packet format version */
549 struct isis_iih_lan_header {
550 u_int8_t circuit_type;
551 u_int8_t source_id[SYSTEM_ID_LEN];
552 u_int8_t holding_time[2];
555 u_int8_t lan_id[NODE_ID_LEN];
558 struct isis_iih_ptp_header {
559 u_int8_t circuit_type;
560 u_int8_t source_id[SYSTEM_ID_LEN];
561 u_int8_t holding_time[2];
566 struct isis_lsp_header {
568 u_int8_t remaining_lifetime[2];
569 u_int8_t lsp_id[LSP_ID_LEN];
570 u_int8_t sequence_number[4];
571 u_int8_t checksum[2];
575 struct isis_csnp_header {
577 u_int8_t source_id[NODE_ID_LEN];
578 u_int8_t start_lsp_id[LSP_ID_LEN];
579 u_int8_t end_lsp_id[LSP_ID_LEN];
582 struct isis_psnp_header {
584 u_int8_t source_id[NODE_ID_LEN];
587 struct isis_tlv_lsp {
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];
594 #define ISIS_COMMON_HEADER_SIZE (sizeof(struct isis_common_header))
595 #define ISIS_IIH_LAN_HEADER_SIZE (sizeof(struct isis_iih_lan_header))
596 #define ISIS_IIH_PTP_HEADER_SIZE (sizeof(struct isis_iih_ptp_header))
597 #define ISIS_LSP_HEADER_SIZE (sizeof(struct isis_lsp_header))
598 #define ISIS_CSNP_HEADER_SIZE (sizeof(struct isis_csnp_header))
599 #define ISIS_PSNP_HEADER_SIZE (sizeof(struct isis_psnp_header))
601 void isoclns_print(const u_int8_t *p, u_int length, u_int caplen)
603 const struct isis_common_header *header;
605 header = (const struct isis_common_header *)p;
607 if (caplen <= 1) { /* enough bytes on the wire ? */
613 printf("OSI NLPID %s (0x%02x): ",
614 tok2str(nlpid_values,"Unknown",*p),
620 if (!clnp_print(p, length))
621 print_unknown_data(p,"\n\t",caplen);
625 esis_print(p, length);
629 if (!isis_print(p, length))
630 print_unknown_data(p,"\n\t",caplen);
634 (void)printf("%slength: %u",
640 q933_print(p+1, length-1);
644 ip_print(gndo, p+1, length-1);
649 ip6_print(p+1, length-1);
654 ppp_print(p+1, length-1);
659 printf("OSI NLPID 0x%02x unknown",*p);
660 (void)printf("%slength: %u",
664 print_unknown_data(p,"\n\t",caplen);
669 #define CLNP_PDU_ER 1
670 #define CLNP_PDU_DT 28
671 #define CLNP_PDU_MD 29
672 #define CLNP_PDU_ERQ 30
673 #define CLNP_PDU_ERP 31
675 static struct tok clnp_pdu_values[] = {
676 { CLNP_PDU_ER, "Error Report"},
677 { CLNP_PDU_MD, "MD"},
678 { CLNP_PDU_DT, "Data"},
679 { CLNP_PDU_ERQ, "Echo Request"},
680 { CLNP_PDU_ERP, "Echo Response"},
684 struct clnp_header_t {
686 u_int8_t length_indicator;
688 u_int8_t lifetime; /* units of 500ms */
690 u_int8_t segment_length[2];
694 struct clnp_segment_header_t {
695 u_int8_t data_unit_id[2];
696 u_int8_t segment_offset[2];
697 u_int8_t total_length[2];
702 * Decode CLNP packets. Return 0 on error.
705 static int clnp_print (const u_int8_t *pptr, u_int length)
707 const u_int8_t *optr,*source_address,*dest_address;
708 u_int li,tlen,nsap_offset,source_address_length,dest_address_length, clnp_pdu_type, clnp_flags;
709 const struct clnp_header_t *clnp_header;
710 const struct clnp_segment_header_t *clnp_segment_header;
711 u_int8_t rfd_error_major,rfd_error_minor;
713 clnp_header = (const struct clnp_header_t *) pptr;
714 TCHECK(*clnp_header);
716 li = clnp_header->length_indicator;
723 * Sanity checking of the header.
726 if (clnp_header->version != CLNP_VERSION) {
727 printf("version %d packet not supported", clnp_header->version);
731 /* FIXME further header sanity checking */
733 clnp_pdu_type = clnp_header->type & CLNP_PDU_TYPE_MASK;
734 clnp_flags = clnp_header->type & CLNP_FLAG_MASK;
736 pptr += sizeof(struct clnp_header_t);
737 li -= sizeof(struct clnp_header_t);
738 dest_address_length = *pptr;
739 dest_address = pptr + 1;
741 pptr += (1 + dest_address_length);
742 li -= (1 + dest_address_length);
743 source_address_length = *pptr;
744 source_address = pptr +1;
746 pptr += (1 + source_address_length);
747 li -= (1 + source_address_length);
750 printf("%s%s > %s, %s, length %u",
752 isonsap_string(source_address, source_address_length),
753 isonsap_string(dest_address, dest_address_length),
754 tok2str(clnp_pdu_values,"unknown (%u)",clnp_pdu_type),
758 printf("%slength %u",eflag ? "" : ", ",length);
760 printf("\n\t%s PDU, hlen: %u, v: %u, lifetime: %u.%us, Segment PDU length: %u, checksum: 0x%04x ",
761 tok2str(clnp_pdu_values, "unknown (%u)",clnp_pdu_type),
762 clnp_header->length_indicator,
763 clnp_header->version,
764 clnp_header->lifetime/2,
765 (clnp_header->lifetime%2)*5,
766 EXTRACT_16BITS(clnp_header->segment_length),
767 EXTRACT_16BITS(clnp_header->cksum));
769 /* do not attempt to verify the checksum if it is zero */
770 if (EXTRACT_16BITS(clnp_header->cksum) == 0)
771 printf("(unverified)");
772 else printf("(%s)", osi_cksum(optr, clnp_header->length_indicator) ? "incorrect" : "correct");
774 printf("\n\tFlags [%s]",
775 bittok2str(clnp_flag_values,"none",clnp_flags));
777 printf("\n\tsource address (length %u): %s\n\tdest address (length %u): %s",
778 source_address_length,
779 isonsap_string(source_address, source_address_length),
781 isonsap_string(dest_address,dest_address_length));
783 if (clnp_flags & CLNP_SEGMENT_PART) {
784 clnp_segment_header = (const struct clnp_segment_header_t *) pptr;
785 printf("\n\tData Unit ID: 0x%04x, Segment Offset: %u, Total PDU Length: %u",
786 EXTRACT_16BITS(clnp_segment_header->data_unit_id),
787 EXTRACT_16BITS(clnp_segment_header->segment_offset),
788 EXTRACT_16BITS(clnp_segment_header->total_length));
789 pptr+=sizeof(const struct clnp_segment_header_t);
790 li-=sizeof(const struct clnp_segment_header_t);
793 /* now walk the options */
796 const u_int8_t *tptr;
800 printf(", bad opts/li");
806 TCHECK2(*pptr, opli);
808 printf(", opt (%d) too long", op);
815 printf("\n\t %s Option #%u, length %u, value: ",
816 tok2str(clnp_option_values,"Unknown",op),
823 case CLNP_OPTION_ROUTE_RECORDING: /* those two options share the format */
824 case CLNP_OPTION_SOURCE_ROUTING:
826 tok2str(clnp_option_sr_rr_values,"Unknown",*tptr),
827 tok2str(clnp_option_sr_rr_string_values,"Unknown Option %u",op));
828 nsap_offset=*(tptr+1);
829 if (nsap_offset == 0) {
830 printf(" Bad NSAP offset (0)");
833 nsap_offset-=1; /* offset to nsap list */
834 if (nsap_offset > tlen) {
835 printf(" Bad NSAP offset (past end of option)");
841 source_address_length=*tptr;
842 if (tlen < source_address_length+1) {
843 printf("\n\t NSAP address goes past end of option");
846 if (source_address_length > 0) {
847 source_address=(tptr+1);
848 TCHECK2(*source_address, source_address_length);
849 printf("\n\t NSAP address (length %u): %s",
850 source_address_length,
851 isonsap_string(source_address, source_address_length));
853 tlen-=source_address_length+1;
857 case CLNP_OPTION_PRIORITY:
858 printf("0x%1x", *tptr&0x0f);
861 case CLNP_OPTION_QOS_MAINTENANCE:
862 printf("\n\t Format Code: %s",
863 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK));
865 if ((*tptr&CLNP_OPTION_SCOPE_MASK) == CLNP_OPTION_SCOPE_GLOBAL)
866 printf("\n\t QoS Flags [%s]",
867 bittok2str(clnp_option_qos_global_values,
869 *tptr&CLNP_OPTION_OPTION_QOS_MASK));
872 case CLNP_OPTION_SECURITY:
873 printf("\n\t Format Code: %s, Security-Level %u",
874 tok2str(clnp_option_scope_values,"Reserved",*tptr&CLNP_OPTION_SCOPE_MASK),
878 case CLNP_OPTION_DISCARD_REASON:
879 rfd_error_major = (*tptr&0xf0) >> 4;
880 rfd_error_minor = *tptr&0x0f;
881 printf("\n\t Class: %s Error (0x%01x), %s (0x%01x)",
882 tok2str(clnp_option_rfd_class_values,"Unknown",rfd_error_major),
884 tok2str(clnp_option_rfd_error_class[rfd_error_major],"Unknown",rfd_error_minor),
888 case CLNP_OPTION_PADDING:
889 printf("padding data");
893 * FIXME those are the defined Options that lack a decoder
894 * you are welcome to contribute code ;-)
898 print_unknown_data(tptr,"\n\t ",opli);
902 print_unknown_data(pptr,"\n\t ",opli);
906 switch (clnp_pdu_type) {
908 case CLNP_PDU_ER: /* fall through */
911 if (*(pptr) == NLPID_CLNP) {
912 printf("\n\t-----original packet-----\n\t");
913 /* FIXME recursion protection */
914 clnp_print(pptr, length-clnp_header->length_indicator);
923 /* dump the PDU specific data */
924 if (length-(pptr-optr) > 0) {
925 printf("\n\t undecoded non-header data, length %u",length-clnp_header->length_indicator);
926 print_unknown_data(pptr,"\n\t ",length-(pptr-optr));
933 fputs("[|clnp]", stdout);
939 #define ESIS_PDU_REDIRECT 6
940 #define ESIS_PDU_ESH 2
941 #define ESIS_PDU_ISH 4
943 static struct tok esis_pdu_values[] = {
944 { ESIS_PDU_REDIRECT, "redirect"},
945 { ESIS_PDU_ESH, "ESH"},
946 { ESIS_PDU_ISH, "ISH"},
950 struct esis_header_t {
952 u_int8_t length_indicator;
956 u_int8_t holdtime[2];
961 esis_print(const u_int8_t *pptr, u_int length)
963 const u_int8_t *optr;
964 u_int li,esis_pdu_type,source_address_length, source_address_number;
965 const struct esis_header_t *esis_header;
974 printf("no header at all!");
978 esis_header = (const struct esis_header_t *) pptr;
979 TCHECK(*esis_header);
980 li = esis_header->length_indicator;
984 * Sanity checking of the header.
987 if (esis_header->nlpid != NLPID_ESIS) {
988 printf(" nlpid 0x%02x packet not supported", esis_header->nlpid);
992 if (esis_header->version != ESIS_VERSION) {
993 printf(" version %d packet not supported", esis_header->version);
998 printf(" length indicator(%d) > PDU size (%d)!", li, length);
1002 if (li < sizeof(struct esis_header_t) + 2) {
1003 printf(" length indicator < min PDU size %d:", li);
1004 while (--length != 0)
1005 printf("%02X", *pptr++);
1009 esis_pdu_type = esis_header->type & ESIS_PDU_TYPE_MASK;
1012 printf("%s%s, length %u",
1014 tok2str(esis_pdu_values,"unknown type (%u)",esis_pdu_type),
1018 printf("%slength %u\n\t%s (%u)",
1021 tok2str(esis_pdu_values,"unknown type: %u", esis_pdu_type),
1024 printf(", v: %u%s", esis_header->version, esis_header->version == ESIS_VERSION ? "" : "unsupported" );
1025 printf(", checksum: 0x%04x ", EXTRACT_16BITS(esis_header->cksum));
1026 /* do not attempt to verify the checksum if it is zero */
1027 if (EXTRACT_16BITS(esis_header->cksum) == 0)
1028 printf("(unverified)");
1030 printf("(%s)", osi_cksum(pptr, li) ? "incorrect" : "correct");
1032 printf(", holding time: %us, length indicator: %u",EXTRACT_16BITS(esis_header->holdtime),li);
1035 print_unknown_data(optr,"\n\t",sizeof(struct esis_header_t));
1037 pptr += sizeof(struct esis_header_t);
1038 li -= sizeof(struct esis_header_t);
1040 switch (esis_pdu_type) {
1041 case ESIS_PDU_REDIRECT: {
1042 const u_int8_t *dst, *snpa, *neta;
1043 u_int dstl, snpal, netal;
1047 printf(", bad redirect/li");
1053 TCHECK2(*pptr, dstl);
1055 printf(", bad redirect/li");
1061 printf("\n\t %s", isonsap_string(dst,dstl));
1065 printf(", bad redirect/li");
1071 TCHECK2(*pptr, snpal);
1073 printf(", bad redirect/li");
1081 printf(", bad redirect/li");
1086 TCHECK2(*pptr, netal);
1088 printf(", bad redirect/li");
1096 printf("\n\t %s", etheraddr_string(snpa));
1098 printf("\n\t %s", isonsap_string(neta,netal));
1105 printf(", bad esh/li");
1108 source_address_number = *pptr;
1112 printf("\n\t Number of Source Addresses: %u", source_address_number);
1114 while (source_address_number > 0) {
1117 printf(", bad esh/li");
1120 source_address_length = *pptr;
1124 TCHECK2(*pptr, source_address_length);
1125 if (li < source_address_length) {
1126 printf(", bad esh/li");
1129 printf("\n\t NET (length: %u): %s",
1130 source_address_length,
1131 isonsap_string(pptr,source_address_length));
1132 pptr += source_address_length;
1133 li -= source_address_length;
1134 source_address_number--;
1139 case ESIS_PDU_ISH: {
1142 printf(", bad ish/li");
1145 source_address_length = *pptr;
1148 TCHECK2(*pptr, source_address_length);
1149 if (li < source_address_length) {
1150 printf(", bad ish/li");
1153 printf("\n\t NET (length: %u): %s", source_address_length, isonsap_string(pptr, source_address_length));
1154 pptr += source_address_length;
1155 li -= source_address_length;
1162 print_unknown_data(pptr,"\n\t ",snapend-pptr);
1167 /* now walk the options */
1170 const u_int8_t *tptr;
1174 printf(", bad opts/li");
1181 printf(", opt (%d) too long", op);
1187 printf("\n\t %s Option #%u, length %u, value: ",
1188 tok2str(esis_option_values,"Unknown",op),
1194 case ESIS_OPTION_ES_CONF_TIME:
1196 printf("%us", EXTRACT_16BITS(tptr));
1199 case ESIS_OPTION_PROTOCOLS:
1202 printf("%s (0x%02x)",
1203 tok2str(nlpid_values,
1207 if (opli>1) /* further NPLIDs ? - put comma */
1215 * FIXME those are the defined Options that lack a decoder
1216 * you are welcome to contribute code ;-)
1219 case ESIS_OPTION_QOS_MAINTENANCE:
1220 case ESIS_OPTION_SECURITY:
1221 case ESIS_OPTION_PRIORITY:
1222 case ESIS_OPTION_ADDRESS_MASK:
1223 case ESIS_OPTION_SNPA_MASK:
1226 print_unknown_data(tptr,"\n\t ",opli);
1230 print_unknown_data(pptr,"\n\t ",opli);
1237 /* shared routine for printing system, node and lsp-ids */
1239 isis_print_id(const u_int8_t *cp, int id_len)
1242 static char id[sizeof("xxxx.xxxx.xxxx.yy-zz")];
1245 for (i = 1; i <= SYSTEM_ID_LEN; i++) {
1246 snprintf(pos, sizeof(id) - (pos - id), "%02x", *cp++);
1248 if (i == 2 || i == 4)
1251 if (id_len >= NODE_ID_LEN) {
1252 snprintf(pos, sizeof(id) - (pos - id), ".%02x", *cp++);
1255 if (id_len == LSP_ID_LEN)
1256 snprintf(pos, sizeof(id) - (pos - id), "-%02x", *cp);
1260 /* print the 4-byte metric block which is common found in the old-style TLVs */
1262 isis_print_metric_block (const struct isis_metric_block *isis_metric_block)
1264 printf(", Default Metric: %d, %s",
1265 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_default),
1266 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_default) ? "External" : "Internal");
1267 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_delay))
1268 printf("\n\t\t Delay Metric: %d, %s",
1269 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_delay),
1270 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_delay) ? "External" : "Internal");
1271 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_expense))
1272 printf("\n\t\t Expense Metric: %d, %s",
1273 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_expense),
1274 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_expense) ? "External" : "Internal");
1275 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(isis_metric_block->metric_error))
1276 printf("\n\t\t Error Metric: %d, %s",
1277 ISIS_LSP_TLV_METRIC_VALUE(isis_metric_block->metric_error),
1278 ISIS_LSP_TLV_METRIC_IE(isis_metric_block->metric_error) ? "External" : "Internal");
1280 return(1); /* everything is ok */
1284 isis_print_tlv_ip_reach (const u_int8_t *cp, const char *ident, int length)
1287 const struct isis_tlv_ip_reach *tlv_ip_reach;
1289 tlv_ip_reach = (const struct isis_tlv_ip_reach *)cp;
1291 while (length > 0) {
1292 if ((size_t)length < sizeof(*tlv_ip_reach)) {
1293 printf("short IPv4 Reachability (%d vs %lu)",
1295 (unsigned long)sizeof(*tlv_ip_reach));
1299 if (!TTEST(*tlv_ip_reach))
1302 prefix_len = mask2plen(EXTRACT_32BITS(tlv_ip_reach->mask));
1304 if (prefix_len == -1)
1305 printf("%sIPv4 prefix: %s mask %s",
1307 ipaddr_string((tlv_ip_reach->prefix)),
1308 ipaddr_string((tlv_ip_reach->mask)));
1310 printf("%sIPv4 prefix: %15s/%u",
1312 ipaddr_string((tlv_ip_reach->prefix)),
1315 printf(", Distribution: %s, Metric: %u, %s",
1316 ISIS_LSP_TLV_METRIC_UPDOWN(tlv_ip_reach->isis_metric_block.metric_default) ? "down" : "up",
1317 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_default),
1318 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_default) ? "External" : "Internal");
1320 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_delay))
1321 printf("%s Delay Metric: %u, %s",
1323 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_delay),
1324 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_delay) ? "External" : "Internal");
1326 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_expense))
1327 printf("%s Expense Metric: %u, %s",
1329 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_expense),
1330 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_expense) ? "External" : "Internal");
1332 if (!ISIS_LSP_TLV_METRIC_SUPPORTED(tlv_ip_reach->isis_metric_block.metric_error))
1333 printf("%s Error Metric: %u, %s",
1335 ISIS_LSP_TLV_METRIC_VALUE(tlv_ip_reach->isis_metric_block.metric_error),
1336 ISIS_LSP_TLV_METRIC_IE(tlv_ip_reach->isis_metric_block.metric_error) ? "External" : "Internal");
1338 length -= sizeof(struct isis_tlv_ip_reach);
1345 * this is the common IP-REACH subTLV decoder it is called
1346 * from various EXTD-IP REACH TLVs (135,235,236,237)
1350 isis_print_ip_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
1352 /* first lets see if we know the subTLVs name*/
1353 printf("%s%s subTLV #%u, length: %u",
1355 tok2str(isis_ext_ip_reach_subtlv_values,
1361 if (!TTEST2(*tptr,subl))
1365 case ISIS_SUBTLV_EXTD_IP_REACH_MGMT_PREFIX_COLOR: /* fall through */
1366 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG32:
1368 printf(", 0x%08x (=%u)",
1369 EXTRACT_32BITS(tptr),
1370 EXTRACT_32BITS(tptr));
1375 case ISIS_SUBTLV_EXTD_IP_REACH_ADMIN_TAG64:
1377 printf(", 0x%08x%08x",
1378 EXTRACT_32BITS(tptr),
1379 EXTRACT_32BITS(tptr+4));
1385 if(!print_unknown_data(tptr,"\n\t\t ",
1393 printf("%spacket exceeded snapshot",ident);
1398 * this is the common IS-REACH subTLV decoder it is called
1399 * from isis_print_ext_is_reach()
1403 isis_print_is_reach_subtlv (const u_int8_t *tptr,int subt,int subl,const char *ident) {
1405 int priority_level,bandwidth_constraint;
1406 union { /* int to float conversion buffer for several subTLVs */
1411 /* first lets see if we know the subTLVs name*/
1412 printf("%s%s subTLV #%u, length: %u",
1414 tok2str(isis_ext_is_reach_subtlv_values,
1420 if (!TTEST2(*tptr,subl))
1424 case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP:
1425 case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID:
1426 case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID:
1428 printf(", 0x%08x", EXTRACT_32BITS(tptr));
1429 if (subl == 8) /* draft-ietf-isis-gmpls-extensions */
1430 printf(", 0x%08x", EXTRACT_32BITS(tptr+4));
1433 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR:
1434 case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR:
1436 printf(", %s", ipaddr_string(tptr));
1438 case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW :
1439 case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW:
1441 bw.i = EXTRACT_32BITS(tptr);
1442 printf(", %.3f Mbps", bw.f*8/1000000 );
1445 case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW :
1447 for (priority_level = 0; priority_level < 8; priority_level++) {
1448 bw.i = EXTRACT_32BITS(tptr);
1449 printf("%s priority level %d: %.3f Mbps",
1457 case ISIS_SUBTLV_EXT_IS_REACH_DIFFSERV_TE:
1458 printf("%sBandwidth Constraints Model ID: %s (%u)",
1460 tok2str(diffserv_te_bc_values, "unknown", *tptr),
1463 /* decode BCs until the subTLV ends */
1464 for (bandwidth_constraint = 0; bandwidth_constraint < (subl-1)/4; bandwidth_constraint++) {
1465 bw.i = EXTRACT_32BITS(tptr);
1466 printf("%s Bandwidth constraint %d: %.3f Mbps",
1468 bandwidth_constraint,
1473 case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC:
1475 printf(", %u", EXTRACT_24BITS(tptr));
1477 case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE:
1479 printf(", %s, Priority %u",
1480 bittok2str(gmpls_link_prot_values, "none", *tptr),
1484 case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR:
1486 printf("%s Interface Switching Capability:%s",
1488 tok2str(gmpls_switch_cap_values, "Unknown", *(tptr)));
1489 printf(", LSP Encoding: %s",
1490 tok2str(gmpls_encoding_values, "Unknown", *(tptr+1)));
1492 printf("%s Max LSP Bandwidth:",ident);
1493 for (priority_level = 0; priority_level < 8; priority_level++) {
1494 bw.i = EXTRACT_32BITS(tptr);
1495 printf("%s priority level %d: %.3f Mbps",
1502 /* there is some optional stuff left to decode but this is as of yet
1503 not specified so just lets hexdump what is left */
1505 if(!print_unknown_data(tptr,"\n\t\t ",
1512 if(!print_unknown_data(tptr,"\n\t\t ",
1520 printf("%spacket exceeded snapshot",ident);
1526 * this is the common IS-REACH decoder it is called
1527 * from various EXTD-IS REACH style TLVs (22,24,222)
1531 isis_print_ext_is_reach (const u_int8_t *tptr,const char *ident, int tlv_type) {
1533 char ident_buffer[20];
1534 int subtlv_type,subtlv_len,subtlv_sum_len;
1535 int proc_bytes = 0; /* how many bytes did we process ? */
1537 if (!TTEST2(*tptr, NODE_ID_LEN))
1540 printf("%sIS Neighbor: %s", ident, isis_print_id(tptr, NODE_ID_LEN));
1541 tptr+=(NODE_ID_LEN);
1543 if (tlv_type != ISIS_TLV_IS_ALIAS_ID) { /* the Alias TLV Metric field is implicit 0 */
1544 if (!TTEST2(*tptr, 3)) /* and is therefore skipped */
1546 printf(", Metric: %d",EXTRACT_24BITS(tptr));
1550 if (!TTEST2(*tptr, 1))
1552 subtlv_sum_len=*(tptr++); /* read out subTLV length */
1553 proc_bytes=NODE_ID_LEN+3+1;
1554 printf(", %ssub-TLVs present",subtlv_sum_len ? "" : "no ");
1555 if (subtlv_sum_len) {
1556 printf(" (%u)",subtlv_sum_len);
1557 while (subtlv_sum_len>0) {
1558 if (!TTEST2(*tptr,2))
1560 subtlv_type=*(tptr++);
1561 subtlv_len=*(tptr++);
1562 /* prepend the ident string */
1563 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1564 if(!isis_print_is_reach_subtlv(tptr,subtlv_type,subtlv_len,ident_buffer))
1567 subtlv_sum_len-=(subtlv_len+2);
1568 proc_bytes+=(subtlv_len+2);
1575 * this is the common Multi Topology ID decoder
1576 * it is called from various MT-TLVs (222,229,235,237)
1580 isis_print_mtid (const u_int8_t *tptr,const char *ident) {
1582 if (!TTEST2(*tptr, 2))
1587 tok2str(isis_mt_values,
1588 "Reserved for IETF Consensus",
1589 ISIS_MASK_MTID(EXTRACT_16BITS(tptr))));
1591 printf(" Topology (0x%03x), Flags: [%s]",
1592 ISIS_MASK_MTID(EXTRACT_16BITS(tptr)),
1593 bittok2str(isis_mt_flag_values, "none",ISIS_MASK_MTFLAGS(EXTRACT_16BITS(tptr))));
1599 * this is the common extended IP reach decoder
1600 * it is called from TLVs (135,235,236,237)
1601 * we process the TLV and optional subTLVs and return
1602 * the amount of processed bytes
1606 isis_print_extd_ip_reach (const u_int8_t *tptr, const char *ident, u_int16_t afi) {
1608 char ident_buffer[20];
1609 u_int8_t prefix[16]; /* shared copy buffer for IPv4 and IPv6 prefixes */
1610 u_int metric, status_byte, bit_length, byte_length, sublen, processed, subtlvtype, subtlvlen;
1612 if (!TTEST2(*tptr, 4))
1614 metric = EXTRACT_32BITS(tptr);
1619 if (!TTEST2(*tptr, 1)) /* fetch status byte */
1621 status_byte=*(tptr++);
1622 bit_length = status_byte&0x3f;
1625 } else if (afi == IPV6) {
1626 if (!TTEST2(*tptr, 1)) /* fetch status & prefix_len byte */
1628 status_byte=*(tptr++);
1629 bit_length=*(tptr++);
1633 return (0); /* somebody is fooling us */
1635 byte_length = (bit_length + 7) / 8; /* prefix has variable length encoding */
1637 if (!TTEST2(*tptr, byte_length))
1639 memset(prefix, 0, 16); /* clear the copy buffer */
1640 memcpy(prefix,tptr,byte_length); /* copy as much as is stored in the TLV */
1642 processed+=byte_length;
1645 printf("%sIPv4 prefix: %15s/%u",
1647 ipaddr_string(prefix),
1651 printf("%sIPv6 prefix: %s/%u",
1653 ip6addr_string(prefix),
1657 printf(", Distribution: %s, Metric: %u",
1658 ISIS_MASK_TLV_EXTD_IP_UPDOWN(status_byte) ? "down" : "up",
1661 if (afi == IPV4 && ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte))
1662 printf(", sub-TLVs present");
1666 ISIS_MASK_TLV_EXTD_IP6_IE(status_byte) ? "External" : "Internal",
1667 ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) ? ", sub-TLVs present" : "");
1670 if ((ISIS_MASK_TLV_EXTD_IP_SUBTLV(status_byte) && afi == IPV4) ||
1671 (ISIS_MASK_TLV_EXTD_IP6_SUBTLV(status_byte) && afi == IPV6)) {
1672 /* assume that one prefix can hold more
1673 than one subTLV - therefore the first byte must reflect
1674 the aggregate bytecount of the subTLVs for this prefix
1676 if (!TTEST2(*tptr, 1))
1679 processed+=sublen+1;
1680 printf(" (%u)",sublen); /* print out subTLV length */
1683 if (!TTEST2(*tptr,2))
1685 subtlvtype=*(tptr++);
1686 subtlvlen=*(tptr++);
1687 /* prepend the ident string */
1688 snprintf(ident_buffer, sizeof(ident_buffer), "%s ",ident);
1689 if(!isis_print_ip_reach_subtlv(tptr,subtlvtype,subtlvlen,ident_buffer))
1692 sublen-=(subtlvlen+2);
1700 * Decode IS-IS packets. Return 0 on error.
1703 static int isis_print (const u_int8_t *p, u_int length)
1705 const struct isis_common_header *isis_header;
1707 const struct isis_iih_lan_header *header_iih_lan;
1708 const struct isis_iih_ptp_header *header_iih_ptp;
1709 const struct isis_lsp_header *header_lsp;
1710 const struct isis_csnp_header *header_csnp;
1711 const struct isis_psnp_header *header_psnp;
1713 const struct isis_tlv_lsp *tlv_lsp;
1714 const struct isis_tlv_ptp_adj *tlv_ptp_adj;
1715 const struct isis_tlv_is_reach *tlv_is_reach;
1716 const struct isis_tlv_es_reach *tlv_es_reach;
1718 u_int8_t pdu_type, max_area, id_length, tlv_type, tlv_len, tmp, alen, lan_alen, prefix_len;
1719 u_int8_t ext_is_len, ext_ip_len, mt_len;
1720 const u_int8_t *optr, *pptr, *tptr;
1721 u_short packet_len,pdu_len;
1725 optr = p; /* initialize the _o_riginal pointer to the packet start -
1726 need it for parsing the checksum TLV */
1727 isis_header = (const struct isis_common_header *)p;
1728 TCHECK(*isis_header);
1729 pptr = p+(ISIS_COMMON_HEADER_SIZE);
1730 header_iih_lan = (const struct isis_iih_lan_header *)pptr;
1731 header_iih_ptp = (const struct isis_iih_ptp_header *)pptr;
1732 header_lsp = (const struct isis_lsp_header *)pptr;
1733 header_csnp = (const struct isis_csnp_header *)pptr;
1734 header_psnp = (const struct isis_psnp_header *)pptr;
1740 * Sanity checking of the header.
1743 if (isis_header->version != ISIS_VERSION) {
1744 printf("version %d packet not supported", isis_header->version);
1748 if ((isis_header->id_length != SYSTEM_ID_LEN) && (isis_header->id_length != 0)) {
1749 printf("system ID length of %d is not supported",
1750 isis_header->id_length);
1754 if (isis_header->pdu_version != ISIS_VERSION) {
1755 printf("version %d packet not supported", isis_header->pdu_version);
1759 max_area = isis_header->max_area;
1762 max_area = 3; /* silly shit */
1765 printf("bad packet -- 255 areas");
1771 id_length = isis_header->id_length;
1774 id_length = 6; /* silly shit again */
1776 case 1: /* 1-8 are valid sys-ID lenghts */
1786 id_length = 0; /* entirely useless */
1792 /* toss any non 6-byte sys-ID len PDUs */
1793 if (id_length != 6 ) {
1794 printf("bad packet -- illegal sys-ID length (%u)", id_length);
1798 pdu_type=isis_header->pdu_type;
1800 /* in non-verbose mode print the basic PDU Type plus PDU specific brief information*/
1804 tok2str(isis_pdu_values,"unknown PDU-Type %u",pdu_type));
1808 case ISIS_PDU_L1_LAN_IIH:
1809 case ISIS_PDU_L2_LAN_IIH:
1810 printf(", src-id %s",
1811 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN));
1812 printf(", lan-id %s, prio %u",
1813 isis_print_id(header_iih_lan->lan_id,NODE_ID_LEN),
1814 header_iih_lan->priority);
1816 case ISIS_PDU_PTP_IIH:
1817 printf(", src-id %s", isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN));
1819 case ISIS_PDU_L1_LSP:
1820 case ISIS_PDU_L2_LSP:
1821 printf(", lsp-id %s, seq 0x%08x, lifetime %5us",
1822 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
1823 EXTRACT_32BITS(header_lsp->sequence_number),
1824 EXTRACT_16BITS(header_lsp->remaining_lifetime));
1826 case ISIS_PDU_L1_CSNP:
1827 case ISIS_PDU_L2_CSNP:
1828 printf(", src-id %s", isis_print_id(header_csnp->source_id,NODE_ID_LEN));
1830 case ISIS_PDU_L1_PSNP:
1831 case ISIS_PDU_L2_PSNP:
1832 printf(", src-id %s", isis_print_id(header_psnp->source_id,NODE_ID_LEN));
1836 printf(", length %u", length);
1841 /* ok they seem to want to know everything - lets fully decode it */
1842 printf("%slength %u", eflag ? "" : ", ",length);
1844 printf("\n\t%s, hlen: %u, v: %u, pdu-v: %u, sys-id-len: %u (%u), max-area: %u (%u)",
1845 tok2str(isis_pdu_values,
1848 isis_header->fixed_len,
1849 isis_header->version,
1850 isis_header->pdu_version,
1852 isis_header->id_length,
1854 isis_header->max_area);
1857 if(!print_unknown_data(optr,"\n\t",8)) /* provide the _o_riginal pointer */
1858 return(0); /* for optionally debugging the common header */
1863 case ISIS_PDU_L1_LAN_IIH:
1864 case ISIS_PDU_L2_LAN_IIH:
1865 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE)) {
1866 printf(", bogus fixed header length %u should be %lu",
1867 isis_header->fixed_len, (unsigned long)ISIS_IIH_LAN_HEADER_SIZE);
1871 pdu_len=EXTRACT_16BITS(header_iih_lan->pdu_len);
1872 if (packet_len>pdu_len) {
1873 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1877 TCHECK(*header_iih_lan);
1878 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1879 isis_print_id(header_iih_lan->source_id,SYSTEM_ID_LEN),
1880 EXTRACT_16BITS(header_iih_lan->holding_time),
1881 tok2str(isis_iih_circuit_type_values,
1882 "unknown circuit type 0x%02x",
1883 header_iih_lan->circuit_type));
1885 printf("\n\t lan-id: %s, Priority: %u, PDU length: %u",
1886 isis_print_id(header_iih_lan->lan_id, NODE_ID_LEN),
1887 (header_iih_lan->priority) & ISIS_LAN_PRIORITY_MASK,
1891 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_LAN_HEADER_SIZE))
1895 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1896 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_LAN_HEADER_SIZE);
1899 case ISIS_PDU_PTP_IIH:
1900 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE)) {
1901 printf(", bogus fixed header length %u should be %lu",
1902 isis_header->fixed_len, (unsigned long)ISIS_IIH_PTP_HEADER_SIZE);
1906 pdu_len=EXTRACT_16BITS(header_iih_ptp->pdu_len);
1907 if (packet_len>pdu_len) {
1908 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1912 TCHECK(*header_iih_ptp);
1913 printf("\n\t source-id: %s, holding time: %us, Flags: [%s]",
1914 isis_print_id(header_iih_ptp->source_id,SYSTEM_ID_LEN),
1915 EXTRACT_16BITS(header_iih_ptp->holding_time),
1916 tok2str(isis_iih_circuit_type_values,
1917 "unknown circuit type 0x%02x",
1918 header_iih_ptp->circuit_type));
1920 printf("\n\t circuit-id: 0x%02x, PDU length: %u",
1921 header_iih_ptp->circuit_id,
1925 if(!print_unknown_data(pptr,"\n\t ",ISIS_IIH_PTP_HEADER_SIZE))
1929 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1930 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_IIH_PTP_HEADER_SIZE);
1933 case ISIS_PDU_L1_LSP:
1934 case ISIS_PDU_L2_LSP:
1935 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE)) {
1936 printf(", bogus fixed header length %u should be %lu",
1937 isis_header->fixed_len, (unsigned long)ISIS_LSP_HEADER_SIZE);
1941 pdu_len=EXTRACT_16BITS(header_lsp->pdu_len);
1942 if (packet_len>pdu_len) {
1943 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
1947 TCHECK(*header_lsp);
1948 printf("\n\t lsp-id: %s, seq: 0x%08x, lifetime: %5us\n\t chksum: 0x%04x",
1949 isis_print_id(header_lsp->lsp_id, LSP_ID_LEN),
1950 EXTRACT_32BITS(header_lsp->sequence_number),
1951 EXTRACT_16BITS(header_lsp->remaining_lifetime),
1952 EXTRACT_16BITS(header_lsp->checksum));
1954 /* if this is a purge do not attempt to verify the checksum */
1955 if ( EXTRACT_16BITS(header_lsp->remaining_lifetime) == 0 &&
1956 EXTRACT_16BITS(header_lsp->checksum) == 0)
1957 printf(" (purged)");
1959 /* verify the checksum -
1960 * checking starts at the lsp-id field at byte position [12]
1961 * hence the length needs to be reduced by 12 bytes */
1962 printf(" (%s)", (osi_cksum((u_int8_t *)header_lsp->lsp_id, length-12)) ? "incorrect" : "correct");
1964 printf(", PDU length: %u, Flags: [ %s",
1966 ISIS_MASK_LSP_OL_BIT(header_lsp->typeblock) ? "Overload bit set, " : "");
1968 if (ISIS_MASK_LSP_ATT_BITS(header_lsp->typeblock)) {
1969 printf("%s", ISIS_MASK_LSP_ATT_DEFAULT_BIT(header_lsp->typeblock) ? "default " : "");
1970 printf("%s", ISIS_MASK_LSP_ATT_DELAY_BIT(header_lsp->typeblock) ? "delay " : "");
1971 printf("%s", ISIS_MASK_LSP_ATT_EXPENSE_BIT(header_lsp->typeblock) ? "expense " : "");
1972 printf("%s", ISIS_MASK_LSP_ATT_ERROR_BIT(header_lsp->typeblock) ? "error " : "");
1973 printf("ATT bit set, ");
1975 printf("%s", ISIS_MASK_LSP_PARTITION_BIT(header_lsp->typeblock) ? "P bit set, " : "");
1976 printf("%s ]", tok2str(isis_lsp_istype_values,"Unknown(0x%x)",ISIS_MASK_LSP_ISTYPE_BITS(header_lsp->typeblock)));
1979 if(!print_unknown_data(pptr,"\n\t ",ISIS_LSP_HEADER_SIZE))
1983 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
1984 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_LSP_HEADER_SIZE);
1987 case ISIS_PDU_L1_CSNP:
1988 case ISIS_PDU_L2_CSNP:
1989 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE)) {
1990 printf(", bogus fixed header length %u should be %lu",
1991 isis_header->fixed_len, (unsigned long)ISIS_CSNP_HEADER_SIZE);
1995 pdu_len=EXTRACT_16BITS(header_csnp->pdu_len);
1996 if (packet_len>pdu_len) {
1997 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2001 TCHECK(*header_csnp);
2002 printf("\n\t source-id: %s, PDU length: %u",
2003 isis_print_id(header_csnp->source_id, NODE_ID_LEN),
2005 printf("\n\t start lsp-id: %s",
2006 isis_print_id(header_csnp->start_lsp_id, LSP_ID_LEN));
2007 printf("\n\t end lsp-id: %s",
2008 isis_print_id(header_csnp->end_lsp_id, LSP_ID_LEN));
2011 if(!print_unknown_data(pptr,"\n\t ",ISIS_CSNP_HEADER_SIZE))
2015 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2016 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_CSNP_HEADER_SIZE);
2019 case ISIS_PDU_L1_PSNP:
2020 case ISIS_PDU_L2_PSNP:
2021 if (isis_header->fixed_len != (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE)) {
2022 printf("- bogus fixed header length %u should be %lu",
2023 isis_header->fixed_len, (unsigned long)ISIS_PSNP_HEADER_SIZE);
2027 pdu_len=EXTRACT_16BITS(header_psnp->pdu_len);
2028 if (packet_len>pdu_len) {
2029 packet_len=pdu_len; /* do TLV decoding as long as it makes sense */
2033 TCHECK(*header_psnp);
2034 printf("\n\t source-id: %s, PDU length: %u",
2035 isis_print_id(header_psnp->source_id, NODE_ID_LEN),
2039 if(!print_unknown_data(pptr,"\n\t ",ISIS_PSNP_HEADER_SIZE))
2043 packet_len -= (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2044 pptr = p + (ISIS_COMMON_HEADER_SIZE+ISIS_PSNP_HEADER_SIZE);
2048 if(!print_unknown_data(pptr,"\n\t ",length))
2054 * Now print the TLV's.
2057 while (packet_len >= 2) {
2058 if (pptr == snapend) {
2062 if (!TTEST2(*pptr, 2)) {
2063 printf("\n\t\t packet exceeded snapshot (%ld) bytes",
2064 (long)(pptr-snapend));
2069 tmp =tlv_len; /* copy temporary len & pointer to packet data */
2072 if (tlv_len > packet_len) {
2076 /* first lets see if we know the TLVs name*/
2077 printf("\n\t %s TLV #%u, length: %u",
2078 tok2str(isis_tlv_values,
2084 if (tlv_len == 0) /* something is malformed */
2087 /* now check if we have a decoder otherwise do a hexdump at the end*/
2089 case ISIS_TLV_AREA_ADDR:
2090 if (!TTEST2(*tptr, 1))
2093 while (tmp && alen < tmp) {
2094 printf("\n\t Area address (length: %u): %s",
2096 isonsap_string(tptr,alen));
2099 if (tmp==0) /* if this is the last area address do not attemt a boundary check */
2101 if (!TTEST2(*tptr, 1))
2106 case ISIS_TLV_ISNEIGH:
2107 while (tmp >= ETHER_ADDR_LEN) {
2108 if (!TTEST2(*tptr, ETHER_ADDR_LEN))
2110 printf("\n\t SNPA: %s",isis_print_id(tptr,ETHER_ADDR_LEN));
2111 tmp -= ETHER_ADDR_LEN;
2112 tptr += ETHER_ADDR_LEN;
2116 case ISIS_TLV_ISNEIGH_VARLEN:
2117 if (!TTEST2(*tptr, 1) || tmp < 3) /* min. TLV length */
2119 lan_alen = *tptr++; /* LAN address length */
2120 if (lan_alen == 0) {
2121 printf("\n\t LAN address length 0 bytes (invalid)");
2125 printf("\n\t LAN address length %u bytes ",lan_alen);
2126 while (tmp >= lan_alen) {
2127 if (!TTEST2(*tptr, lan_alen))
2129 printf("\n\t\tIS Neighbor: %s",isis_print_id(tptr,lan_alen));
2135 case ISIS_TLV_PADDING:
2138 case ISIS_TLV_MT_IS_REACH:
2139 while (tmp >= 2+NODE_ID_LEN+3+1) {
2140 mt_len = isis_print_mtid(tptr, "\n\t ");
2141 if (mt_len == 0) /* did something go wrong ? */
2146 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2147 if (ext_is_len == 0) /* did something go wrong ? */
2155 case ISIS_TLV_IS_ALIAS_ID:
2156 while (tmp >= NODE_ID_LEN+1) { /* is it worth attempting a decode ? */
2157 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2158 if (ext_is_len == 0) /* did something go wrong ? */
2165 case ISIS_TLV_EXT_IS_REACH:
2166 while (tmp >= NODE_ID_LEN+3+1) { /* is it worth attempting a decode ? */
2167 ext_is_len = isis_print_ext_is_reach(tptr,"\n\t ",tlv_type);
2168 if (ext_is_len == 0) /* did something go wrong ? */
2174 case ISIS_TLV_IS_REACH:
2175 if (!TTEST2(*tptr,1)) /* check if there is one byte left to read out the virtual flag */
2178 tok2str(isis_is_reach_virtual_values,
2179 "bogus virtual flag 0x%02x",
2181 tlv_is_reach = (const struct isis_tlv_is_reach *)tptr;
2182 while (tmp >= sizeof(struct isis_tlv_is_reach)) {
2183 if (!TTEST(*tlv_is_reach))
2185 printf("\n\t IS Neighbor: %s",
2186 isis_print_id(tlv_is_reach->neighbor_nodeid, NODE_ID_LEN));
2187 isis_print_metric_block(&tlv_is_reach->isis_metric_block);
2188 tmp -= sizeof(struct isis_tlv_is_reach);
2193 case ISIS_TLV_ESNEIGH:
2194 tlv_es_reach = (const struct isis_tlv_es_reach *)tptr;
2195 while (tmp >= sizeof(struct isis_tlv_es_reach)) {
2196 if (!TTEST(*tlv_es_reach))
2198 printf("\n\t ES Neighbor: %s",
2199 isis_print_id(tlv_es_reach->neighbor_sysid,SYSTEM_ID_LEN));
2200 isis_print_metric_block(&tlv_es_reach->isis_metric_block);
2201 tmp -= sizeof(struct isis_tlv_es_reach);
2206 /* those two TLVs share the same format */
2207 case ISIS_TLV_INT_IP_REACH:
2208 case ISIS_TLV_EXT_IP_REACH:
2209 if (!isis_print_tlv_ip_reach(pptr, "\n\t ", tlv_len))
2213 case ISIS_TLV_EXTD_IP_REACH:
2215 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV4);
2216 if (ext_ip_len == 0) /* did something go wrong ? */
2223 case ISIS_TLV_MT_IP_REACH:
2225 mt_len = isis_print_mtid(tptr, "\n\t ");
2226 if (mt_len == 0) /* did something go wrong ? */
2231 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV4);
2232 if (ext_ip_len == 0) /* did something go wrong ? */
2240 case ISIS_TLV_IP6_REACH:
2242 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV6);
2243 if (ext_ip_len == 0) /* did something go wrong ? */
2250 case ISIS_TLV_MT_IP6_REACH:
2252 mt_len = isis_print_mtid(tptr, "\n\t ");
2253 if (mt_len == 0) /* did something go wrong ? */
2258 ext_ip_len = isis_print_extd_ip_reach(tptr, "\n\t ", IPV6);
2259 if (ext_ip_len == 0) /* did something go wrong ? */
2266 case ISIS_TLV_IP6ADDR:
2268 if (!TTEST2(*tptr, 16))
2271 printf("\n\t IPv6 interface address: %s",
2272 ip6addr_string(tptr));
2280 if (!TTEST2(*tptr, 1))
2284 tok2str(isis_subtlv_auth_values,
2285 "unknown Authentication type 0x%02x",
2289 case ISIS_SUBTLV_AUTH_SIMPLE:
2290 for(i=1;i<tlv_len;i++) {
2291 if (!TTEST2(*(tptr+i), 1))
2293 printf("%c",*(tptr+i));
2296 case ISIS_SUBTLV_AUTH_MD5:
2297 for(i=1;i<tlv_len;i++) {
2298 if (!TTEST2(*(tptr+i), 1))
2300 printf("%02x",*(tptr+i));
2302 if (tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN+1)
2303 printf(", (malformed subTLV) ");
2305 case ISIS_SUBTLV_AUTH_PRIVATE:
2307 if(!print_unknown_data(tptr+1,"\n\t\t ",tlv_len-1))
2313 case ISIS_TLV_PTP_ADJ:
2314 tlv_ptp_adj = (const struct isis_tlv_ptp_adj *)tptr;
2316 if (!TTEST2(*tptr, 1))
2318 printf("\n\t Adjacency State: %s (%u)",
2319 tok2str(isis_ptp_adjancey_values, "unknown", *tptr),
2323 if(tmp>sizeof(tlv_ptp_adj->extd_local_circuit_id)) {
2324 if (!TTEST2(tlv_ptp_adj->extd_local_circuit_id,
2325 sizeof(tlv_ptp_adj->extd_local_circuit_id)))
2327 printf("\n\t Extended Local circuit-ID: 0x%08x",
2328 EXTRACT_32BITS(tlv_ptp_adj->extd_local_circuit_id));
2329 tmp-=sizeof(tlv_ptp_adj->extd_local_circuit_id);
2331 if(tmp>=SYSTEM_ID_LEN) {
2332 if (!TTEST2(tlv_ptp_adj->neighbor_sysid, SYSTEM_ID_LEN))
2334 printf("\n\t Neighbor System-ID: %s",
2335 isis_print_id(tlv_ptp_adj->neighbor_sysid,SYSTEM_ID_LEN));
2338 if(tmp>=sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)) {
2339 if (!TTEST2(tlv_ptp_adj->neighbor_extd_local_circuit_id,
2340 sizeof(tlv_ptp_adj->neighbor_extd_local_circuit_id)))
2342 printf("\n\t Neighbor Extended Local circuit-ID: 0x%08x",
2343 EXTRACT_32BITS(tlv_ptp_adj->neighbor_extd_local_circuit_id));
2347 case ISIS_TLV_PROTOCOLS:
2348 printf("\n\t NLPID(s): ");
2350 if (!TTEST2(*(tptr), 1))
2352 printf("%s (0x%02x)",
2353 tok2str(nlpid_values,
2357 if (tmp>1) /* further NPLIDs ? - put comma */
2364 case ISIS_TLV_TE_ROUTER_ID:
2365 if (!TTEST2(*pptr, 4))
2367 printf("\n\t Traffic Engineering Router ID: %s", ipaddr_string(pptr));
2370 case ISIS_TLV_IPADDR:
2372 if (!TTEST2(*tptr, 4))
2374 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2380 case ISIS_TLV_HOSTNAME:
2381 printf("\n\t Hostname: ");
2383 if (!TTEST2(*tptr, 1))
2385 printf("%c",*tptr++);
2390 case ISIS_TLV_SHARED_RISK_GROUP:
2391 if (tmp < NODE_ID_LEN)
2393 if (!TTEST2(*tptr, NODE_ID_LEN))
2395 printf("\n\t IS Neighbor: %s", isis_print_id(tptr, NODE_ID_LEN));
2396 tptr+=(NODE_ID_LEN);
2401 if (!TTEST2(*tptr, 1))
2403 printf(", Flags: [%s]", ISIS_MASK_TLV_SHARED_RISK_GROUP(*tptr++) ? "numbered" : "unnumbered");
2408 if (!TTEST2(*tptr,4))
2410 printf("\n\t IPv4 interface address: %s", ipaddr_string(tptr));
2416 if (!TTEST2(*tptr,4))
2418 printf("\n\t IPv4 neighbor address: %s", ipaddr_string(tptr));
2423 if (!TTEST2(*tptr, 4))
2425 printf("\n\t Link-ID: 0x%08x", EXTRACT_32BITS(tptr));
2432 tlv_lsp = (const struct isis_tlv_lsp *)tptr;
2433 while(tmp>=sizeof(struct isis_tlv_lsp)) {
2434 if (!TTEST((tlv_lsp->lsp_id)[LSP_ID_LEN-1]))
2436 printf("\n\t lsp-id: %s",
2437 isis_print_id(tlv_lsp->lsp_id, LSP_ID_LEN));
2438 if (!TTEST2(tlv_lsp->sequence_number, 4))
2440 printf(", seq: 0x%08x",EXTRACT_32BITS(tlv_lsp->sequence_number));
2441 if (!TTEST2(tlv_lsp->remaining_lifetime, 2))
2443 printf(", lifetime: %5ds",EXTRACT_16BITS(tlv_lsp->remaining_lifetime));
2444 if (!TTEST2(tlv_lsp->checksum, 2))
2446 printf(", chksum: 0x%04x",EXTRACT_16BITS(tlv_lsp->checksum));
2447 tmp-=sizeof(struct isis_tlv_lsp);
2452 case ISIS_TLV_CHECKSUM:
2455 if (!TTEST2(*tptr, 2))
2457 printf("\n\t checksum: 0x%04x ", EXTRACT_16BITS(tptr));
2458 /* do not attempt to verify the checksum if it is zero
2459 * most likely a HMAC-MD5 TLV is also present and
2460 * to avoid conflicts the checksum TLV is zeroed.
2461 * see rfc3358 for details
2463 if (EXTRACT_16BITS(tptr) == 0)
2464 printf("(unverified)");
2465 else printf("(%s)", osi_cksum(optr, length) ? "incorrect" : "correct");
2468 case ISIS_TLV_MT_SUPPORTED:
2470 /* length can only be a multiple of 2, otherwise there is
2471 something broken -> so decode down until length is 1 */
2473 mt_len = isis_print_mtid(tptr, "\n\t ");
2474 if (mt_len == 0) /* did something go wrong ? */
2479 printf("\n\t malformed MT-ID");
2485 case ISIS_TLV_RESTART_SIGNALING:
2488 if (!TTEST2(*tptr, 3))
2490 printf("\n\t Flags [%s], Remaining holding time %us",
2491 bittok2str(isis_restart_flag_values, "none", *tptr),
2492 EXTRACT_16BITS(tptr+1));
2495 if (tmp == SYSTEM_ID_LEN) {
2496 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2498 printf(", for %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2499 } else if (tmp == NODE_ID_LEN) {
2500 if (!TTEST2(*tptr, NODE_ID_LEN))
2502 printf(", for %s",isis_print_id(tptr,NODE_ID_LEN));
2506 case ISIS_TLV_IDRP_INFO:
2509 if (!TTEST2(*tptr, 1))
2511 printf("\n\t Inter-Domain Information Type: %s",
2512 tok2str(isis_subtlv_idrp_values,
2516 case ISIS_SUBTLV_IDRP_ASN:
2517 if (!TTEST2(*tptr, 2)) /* fetch AS number */
2519 printf("AS Number: %u",EXTRACT_16BITS(tptr));
2521 case ISIS_SUBTLV_IDRP_LOCAL:
2522 case ISIS_SUBTLV_IDRP_RES:
2524 if(!print_unknown_data(tptr,"\n\t ",tlv_len-1))
2530 case ISIS_TLV_LSP_BUFFERSIZE:
2533 if (!TTEST2(*tptr, 2))
2535 printf("\n\t LSP Buffersize: %u",EXTRACT_16BITS(tptr));
2538 case ISIS_TLV_PART_DIS:
2539 while (tmp >= SYSTEM_ID_LEN) {
2540 if (!TTEST2(*tptr, SYSTEM_ID_LEN))
2542 printf("\n\t %s",isis_print_id(tptr,SYSTEM_ID_LEN));
2543 tptr+=SYSTEM_ID_LEN;
2548 case ISIS_TLV_PREFIX_NEIGH:
2549 if (tmp < sizeof(struct isis_metric_block))
2551 if (!TTEST2(*tptr, sizeof(struct isis_metric_block)))
2553 printf("\n\t Metric Block");
2554 isis_print_metric_block((const struct isis_metric_block *)tptr);
2555 tptr+=sizeof(struct isis_metric_block);
2556 tmp-=sizeof(struct isis_metric_block);
2559 if (!TTEST2(*tptr, 1))
2561 prefix_len=*tptr++; /* read out prefix length in semioctets*/
2562 if (prefix_len < 2) {
2563 printf("\n\t\tAddress: prefix length %u < 2", prefix_len);
2567 if (tmp < prefix_len/2)
2569 if (!TTEST2(*tptr, prefix_len/2))
2571 printf("\n\t\tAddress: %s/%u",
2572 isonsap_string(tptr,prefix_len/2),
2579 case ISIS_TLV_IIH_SEQNR:
2582 if (!TTEST2(*tptr, 4)) /* check if four bytes are on the wire */
2584 printf("\n\t Sequence number: %u", EXTRACT_32BITS(tptr) );
2587 case ISIS_TLV_VENDOR_PRIVATE:
2590 if (!TTEST2(*tptr, 3)) /* check if enough byte for a full oui */
2592 vendor_id = EXTRACT_24BITS(tptr);
2593 printf("\n\t Vendor: %s (%u)",
2594 tok2str(oui_values,"Unknown",vendor_id),
2598 if (tmp > 0) /* hexdump the rest */
2599 if(!print_unknown_data(tptr,"\n\t\t",tmp))
2603 * FIXME those are the defined TLVs that lack a decoder
2604 * you are welcome to contribute code ;-)
2607 case ISIS_TLV_DECNET_PHASE4:
2608 case ISIS_TLV_LUCENT_PRIVATE:
2609 case ISIS_TLV_IPAUTH:
2610 case ISIS_TLV_NORTEL_PRIVATE1:
2611 case ISIS_TLV_NORTEL_PRIVATE2:
2615 if(!print_unknown_data(pptr,"\n\t\t",tlv_len))
2620 /* do we want to see an additionally hexdump ? */
2622 if(!print_unknown_data(pptr,"\n\t ",tlv_len))
2627 packet_len -= tlv_len;
2630 if (packet_len != 0) {
2631 printf("\n\t %u straggler bytes", packet_len);
2636 fputs("[|isis]", stdout);
2640 printf("\n\t\t packet exceeded snapshot");
2645 * Verify the checksum. See 8473-1, Appendix C, section C.4.
2649 osi_cksum(const u_int8_t *tptr, u_int len)
2651 int32_t c0 = 0, c1 = 0;
2653 while ((int)--len >= 0) {
2665 * c-style: whitesmith