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CMake: Fix the comment about versions. [skip ci]
[tcpdump] / print-eigrp.c
1 /*
2 * Copyright (c) 1998-2004 Hannes Gredler <hannes@gredler.at>
3 * The TCPDUMP project
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code
7 * distributions retain the above copyright notice and this paragraph
8 * in its entirety, and (2) distributions including binary code include
9 * the above copyright notice and this paragraph in its entirety in
10 * the documentation or other materials provided with the distribution.
11 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
12 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
13 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
14 * FOR A PARTICULAR PURPOSE.
15 */
16
17 /* \summary: Enhanced Interior Gateway Routing Protocol (EIGRP) printer */
18
19 /*
20 * specification:
21 *
22 * https://web.archive.org/web/20190722221712/https://www.rhyshaden.com/eigrp.htm
23 * RFC 7868
24 */
25
26 #include <config.h>
27
28 #include "netdissect-stdinc.h"
29
30 #include <string.h>
31
32 #include "netdissect.h"
33 #include "extract.h"
34 #include "addrtoname.h"
35
36
37 struct eigrp_common_header {
38 nd_uint8_t version;
39 nd_uint8_t opcode;
40 nd_uint16_t checksum;
41 nd_uint32_t flags;
42 nd_uint32_t seq;
43 nd_uint32_t ack;
44 nd_uint16_t vrid;
45 nd_uint16_t asn;
46 };
47
48 #define EIGRP_VERSION 2
49
50 #define EIGRP_OPCODE_UPDATE 1
51 #define EIGRP_OPCODE_QUERY 3
52 #define EIGRP_OPCODE_REPLY 4
53 #define EIGRP_OPCODE_HELLO 5
54 #define EIGRP_OPCODE_IPXSAP 6
55 #define EIGRP_OPCODE_PROBE 7
56
57 static const struct tok eigrp_opcode_values[] = {
58 { EIGRP_OPCODE_UPDATE, "Update" },
59 { EIGRP_OPCODE_QUERY, "Query" },
60 { EIGRP_OPCODE_REPLY, "Reply" },
61 { EIGRP_OPCODE_HELLO, "Hello" },
62 { EIGRP_OPCODE_IPXSAP, "IPX SAP" },
63 { EIGRP_OPCODE_PROBE, "Probe" },
64 { 0, NULL}
65 };
66
67 static const struct tok eigrp_common_header_flag_values[] = {
68 { 0x01, "Init" },
69 { 0x02, "Conditionally Received" },
70 { 0x04, "Restart" },
71 { 0x08, "End-of-Table" },
72 { 0, NULL}
73 };
74
75 struct eigrp_tlv_header {
76 nd_uint16_t type;
77 nd_uint16_t length;
78 };
79
80 #define EIGRP_TLV_GENERAL_PARM 0x0001
81 #define EIGRP_TLV_AUTH 0x0002
82 #define EIGRP_TLV_SEQ 0x0003
83 #define EIGRP_TLV_SW_VERSION 0x0004
84 #define EIGRP_TLV_MCAST_SEQ 0x0005
85 #define EIGRP_TLV_IP_INT 0x0102
86 #define EIGRP_TLV_IP_EXT 0x0103
87 #define EIGRP_TLV_AT_INT 0x0202
88 #define EIGRP_TLV_AT_EXT 0x0203
89 #define EIGRP_TLV_AT_CABLE_SETUP 0x0204
90 #define EIGRP_TLV_IPX_INT 0x0302
91 #define EIGRP_TLV_IPX_EXT 0x0303
92
93 static const struct tok eigrp_tlv_values[] = {
94 { EIGRP_TLV_GENERAL_PARM, "General Parameters"},
95 { EIGRP_TLV_AUTH, "Authentication"},
96 { EIGRP_TLV_SEQ, "Sequence"},
97 { EIGRP_TLV_SW_VERSION, "Software Version"},
98 { EIGRP_TLV_MCAST_SEQ, "Next Multicast Sequence"},
99 { EIGRP_TLV_IP_INT, "IP Internal routes"},
100 { EIGRP_TLV_IP_EXT, "IP External routes"},
101 { EIGRP_TLV_AT_INT, "AppleTalk Internal routes"},
102 { EIGRP_TLV_AT_EXT, "AppleTalk External routes"},
103 { EIGRP_TLV_AT_CABLE_SETUP, "AppleTalk Cable setup"},
104 { EIGRP_TLV_IPX_INT, "IPX Internal routes"},
105 { EIGRP_TLV_IPX_EXT, "IPX External routes"},
106 { 0, NULL}
107 };
108
109 struct eigrp_tlv_general_parm_t {
110 nd_uint8_t k1;
111 nd_uint8_t k2;
112 nd_uint8_t k3;
113 nd_uint8_t k4;
114 nd_uint8_t k5;
115 nd_uint8_t res;
116 nd_uint16_t holdtime;
117 };
118
119 struct eigrp_tlv_sw_version_t {
120 nd_uint8_t ios_major;
121 nd_uint8_t ios_minor;
122 nd_uint8_t eigrp_major;
123 nd_uint8_t eigrp_minor;
124 };
125
126 struct eigrp_tlv_ip_int_t {
127 nd_ipv4 nexthop;
128 nd_uint32_t delay;
129 nd_uint32_t bandwidth;
130 nd_uint24_t mtu;
131 nd_uint8_t hopcount;
132 nd_uint8_t reliability;
133 nd_uint8_t load;
134 nd_byte reserved[2];
135 nd_uint8_t plen;
136 nd_uint8_t destination; /* variable length [1-4] bytes encoding */
137 };
138
139 struct eigrp_tlv_ip_ext_t {
140 nd_ipv4 nexthop;
141 nd_ipv4 origin_router;
142 nd_uint32_t origin_as;
143 nd_uint32_t tag;
144 nd_uint32_t metric;
145 nd_byte reserved[2];
146 nd_uint8_t proto_id;
147 nd_uint8_t flags;
148 nd_uint32_t delay;
149 nd_uint32_t bandwidth;
150 nd_uint24_t mtu;
151 nd_uint8_t hopcount;
152 nd_uint8_t reliability;
153 nd_uint8_t load;
154 nd_byte reserved2[2];
155 nd_uint8_t plen;
156 nd_uint8_t destination; /* variable length [1-4] bytes encoding */
157 };
158
159 struct eigrp_tlv_at_cable_setup_t {
160 nd_uint16_t cable_start;
161 nd_uint16_t cable_end;
162 nd_uint32_t router_id;
163 };
164
165 struct eigrp_tlv_at_int_t {
166 nd_byte nexthop[4];
167 nd_uint32_t delay;
168 nd_uint32_t bandwidth;
169 nd_uint24_t mtu;
170 nd_uint8_t hopcount;
171 nd_uint8_t reliability;
172 nd_uint8_t load;
173 nd_byte reserved[2];
174 nd_uint16_t cable_start;
175 nd_uint16_t cable_end;
176 };
177
178 struct eigrp_tlv_at_ext_t {
179 nd_byte nexthop[4];
180 nd_uint32_t origin_router;
181 nd_uint32_t origin_as;
182 nd_uint32_t tag;
183 nd_uint8_t proto_id;
184 nd_uint8_t flags;
185 nd_uint16_t metric;
186 nd_uint32_t delay;
187 nd_uint32_t bandwidth;
188 nd_uint24_t mtu;
189 nd_uint8_t hopcount;
190 nd_uint8_t reliability;
191 nd_uint8_t load;
192 nd_byte reserved2[2];
193 nd_uint16_t cable_start;
194 nd_uint16_t cable_end;
195 };
196
197 static const struct tok eigrp_ext_proto_id_values[] = {
198 { 0x01, "IGRP" },
199 { 0x02, "EIGRP" },
200 { 0x03, "Static" },
201 { 0x04, "RIP" },
202 { 0x05, "Hello" },
203 { 0x06, "OSPF" },
204 { 0x07, "IS-IS" },
205 { 0x08, "EGP" },
206 { 0x09, "BGP" },
207 { 0x0a, "IDRP" },
208 { 0x0b, "Connected" },
209 { 0, NULL}
210 };
211
212 void
213 eigrp_print(netdissect_options *ndo, const u_char *pptr, u_int len)
214 {
215 const struct eigrp_common_header *eigrp_com_header;
216 const struct eigrp_tlv_header *eigrp_tlv_header;
217 const u_char *tptr,*tlv_tptr;
218 u_int tlen,eigrp_tlv_len,eigrp_tlv_type,tlv_tlen, byte_length, bit_length;
219 uint8_t prefix[4];
220
221 union {
222 const struct eigrp_tlv_general_parm_t *eigrp_tlv_general_parm;
223 const struct eigrp_tlv_sw_version_t *eigrp_tlv_sw_version;
224 const struct eigrp_tlv_ip_int_t *eigrp_tlv_ip_int;
225 const struct eigrp_tlv_ip_ext_t *eigrp_tlv_ip_ext;
226 const struct eigrp_tlv_at_cable_setup_t *eigrp_tlv_at_cable_setup;
227 const struct eigrp_tlv_at_int_t *eigrp_tlv_at_int;
228 const struct eigrp_tlv_at_ext_t *eigrp_tlv_at_ext;
229 } tlv_ptr;
230
231 ndo->ndo_protocol = "eigrp";
232 tptr=pptr;
233 eigrp_com_header = (const struct eigrp_common_header *)pptr;
234 ND_TCHECK_SIZE(eigrp_com_header);
235
236 /*
237 * Sanity checking of the header.
238 */
239 if (GET_U_1(eigrp_com_header->version) != EIGRP_VERSION) {
240 ND_PRINT("EIGRP version %u packet not supported",
241 GET_U_1(eigrp_com_header->version));
242 return;
243 }
244
245 /* in non-verbose mode just lets print the basic Message Type*/
246 if (ndo->ndo_vflag < 1) {
247 ND_PRINT("EIGRP %s, length: %u",
248 tok2str(eigrp_opcode_values, "unknown (%u)",GET_U_1(eigrp_com_header->opcode)),
249 len);
250 return;
251 }
252
253 /* ok they seem to want to know everything - lets fully decode it */
254
255 if (len < sizeof(struct eigrp_common_header)) {
256 ND_PRINT("EIGRP %s, length: %u (too short, < %zu)",
257 tok2str(eigrp_opcode_values, "unknown (%u)",GET_U_1(eigrp_com_header->opcode)),
258 len, sizeof(struct eigrp_common_header));
259 return;
260 }
261 tlen=len-sizeof(struct eigrp_common_header);
262
263 ND_PRINT("\n\tEIGRP v%u, opcode: %s (%u), chksum: 0x%04x, Flags: [%s]"
264 "\n\tseq: 0x%08x, ack: 0x%08x, VRID: %u, AS: %u, length: %u",
265 GET_U_1(eigrp_com_header->version),
266 tok2str(eigrp_opcode_values, "unknown, type: %u",GET_U_1(eigrp_com_header->opcode)),
267 GET_U_1(eigrp_com_header->opcode),
268 GET_BE_U_2(eigrp_com_header->checksum),
269 bittok2str(eigrp_common_header_flag_values,
270 "none",
271 GET_BE_U_4(eigrp_com_header->flags)),
272 GET_BE_U_4(eigrp_com_header->seq),
273 GET_BE_U_4(eigrp_com_header->ack),
274 GET_BE_U_2(eigrp_com_header->vrid),
275 GET_BE_U_2(eigrp_com_header->asn),
276 tlen);
277
278 tptr+=sizeof(struct eigrp_common_header);
279
280 while(tlen>0) {
281 /* did we capture enough for fully decoding the object header ? */
282 ND_TCHECK_LEN(tptr, sizeof(struct eigrp_tlv_header));
283
284 eigrp_tlv_header = (const struct eigrp_tlv_header *)tptr;
285 eigrp_tlv_len=GET_BE_U_2(eigrp_tlv_header->length);
286 eigrp_tlv_type=GET_BE_U_2(eigrp_tlv_header->type);
287
288
289 if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header) ||
290 eigrp_tlv_len > tlen) {
291 print_unknown_data(ndo,tptr+sizeof(struct eigrp_tlv_header),"\n\t ",tlen);
292 return;
293 }
294
295 ND_PRINT("\n\t %s TLV (0x%04x), length: %u",
296 tok2str(eigrp_tlv_values,
297 "Unknown",
298 eigrp_tlv_type),
299 eigrp_tlv_type,
300 eigrp_tlv_len);
301
302 if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header)) {
303 ND_PRINT(" (too short, < %zu)",
304 sizeof(struct eigrp_tlv_header));
305 break;
306 }
307 tlv_tptr=tptr+sizeof(struct eigrp_tlv_header);
308 tlv_tlen=eigrp_tlv_len-sizeof(struct eigrp_tlv_header);
309
310 /* did we capture enough for fully decoding the object ? */
311 ND_TCHECK_LEN(tptr, eigrp_tlv_len);
312
313 switch(eigrp_tlv_type) {
314
315 case EIGRP_TLV_GENERAL_PARM:
316 tlv_ptr.eigrp_tlv_general_parm = (const struct eigrp_tlv_general_parm_t *)tlv_tptr;
317 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_general_parm)) {
318 ND_PRINT(" (too short, < %zu)",
319 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_general_parm));
320 break;
321 }
322
323 ND_PRINT("\n\t holdtime: %us, k1 %u, k2 %u, k3 %u, k4 %u, k5 %u",
324 GET_BE_U_2(tlv_ptr.eigrp_tlv_general_parm->holdtime),
325 GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k1),
326 GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k2),
327 GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k3),
328 GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k4),
329 GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k5));
330 break;
331
332 case EIGRP_TLV_SW_VERSION:
333 tlv_ptr.eigrp_tlv_sw_version = (const struct eigrp_tlv_sw_version_t *)tlv_tptr;
334 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_sw_version)) {
335 ND_PRINT(" (too short, < %zu)",
336 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_sw_version));
337 break;
338 }
339
340 ND_PRINT("\n\t IOS version: %u.%u, EIGRP version %u.%u",
341 GET_U_1(tlv_ptr.eigrp_tlv_sw_version->ios_major),
342 GET_U_1(tlv_ptr.eigrp_tlv_sw_version->ios_minor),
343 GET_U_1(tlv_ptr.eigrp_tlv_sw_version->eigrp_major),
344 GET_U_1(tlv_ptr.eigrp_tlv_sw_version->eigrp_minor));
345 break;
346
347 case EIGRP_TLV_IP_INT:
348 tlv_ptr.eigrp_tlv_ip_int = (const struct eigrp_tlv_ip_int_t *)tlv_tptr;
349 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_ip_int)) {
350 ND_PRINT(" (too short, < %zu)",
351 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_ip_int));
352 break;
353 }
354
355 bit_length = GET_U_1(tlv_ptr.eigrp_tlv_ip_int->plen);
356 if (bit_length > 32) {
357 ND_PRINT("\n\t illegal prefix length %u",bit_length);
358 break;
359 }
360 byte_length = (bit_length + 7) / 8; /* variable length encoding */
361 memset(prefix, 0, 4);
362 GET_CPY_BYTES(prefix, tlv_ptr.eigrp_tlv_ip_int->destination, byte_length);
363
364 ND_PRINT("\n\t IPv4 prefix: %15s/%u, nexthop: ",
365 ipaddr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
366 bit_length);
367 if (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0)
368 ND_PRINT("self");
369 else
370 ND_PRINT("%s",
371 GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_int->nexthop));
372
373 ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
374 (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->delay)/100),
375 GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->bandwidth),
376 GET_BE_U_3(tlv_ptr.eigrp_tlv_ip_int->mtu),
377 GET_U_1(tlv_ptr.eigrp_tlv_ip_int->hopcount),
378 GET_U_1(tlv_ptr.eigrp_tlv_ip_int->reliability),
379 GET_U_1(tlv_ptr.eigrp_tlv_ip_int->load));
380 break;
381
382 case EIGRP_TLV_IP_EXT:
383 tlv_ptr.eigrp_tlv_ip_ext = (const struct eigrp_tlv_ip_ext_t *)tlv_tptr;
384 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_ip_ext)) {
385 ND_PRINT(" (too short, < %zu)",
386 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_ip_ext));
387 break;
388 }
389
390 bit_length = GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->plen);
391 if (bit_length > 32) {
392 ND_PRINT("\n\t illegal prefix length %u",bit_length);
393 break;
394 }
395 byte_length = (bit_length + 7) / 8; /* variable length encoding */
396 memset(prefix, 0, 4);
397 GET_CPY_BYTES(prefix, tlv_ptr.eigrp_tlv_ip_ext->destination, byte_length);
398
399 ND_PRINT("\n\t IPv4 prefix: %15s/%u, nexthop: ",
400 ipaddr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
401 bit_length);
402 if (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0)
403 ND_PRINT("self");
404 else
405 ND_PRINT("%s",
406 GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_ext->nexthop));
407
408 ND_PRINT("\n\t origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
409 GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_ext->origin_router),
410 GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->origin_as),
411 tok2str(eigrp_ext_proto_id_values,"unknown",GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->proto_id)),
412 GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->flags),
413 GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->tag),
414 GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->metric));
415
416 ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
417 (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->delay)/100),
418 GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->bandwidth),
419 GET_BE_U_3(tlv_ptr.eigrp_tlv_ip_ext->mtu),
420 GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->hopcount),
421 GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->reliability),
422 GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->load));
423 break;
424
425 case EIGRP_TLV_AT_CABLE_SETUP:
426 tlv_ptr.eigrp_tlv_at_cable_setup = (const struct eigrp_tlv_at_cable_setup_t *)tlv_tptr;
427 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_at_cable_setup)) {
428 ND_PRINT(" (too short, < %zu)",
429 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_at_cable_setup));
430 break;
431 }
432
433 ND_PRINT("\n\t Cable-range: %u-%u, Router-ID %u",
434 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_cable_setup->cable_start),
435 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_cable_setup->cable_end),
436 GET_BE_U_4(tlv_ptr.eigrp_tlv_at_cable_setup->router_id));
437 break;
438
439 case EIGRP_TLV_AT_INT:
440 tlv_ptr.eigrp_tlv_at_int = (const struct eigrp_tlv_at_int_t *)tlv_tptr;
441 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_at_int)) {
442 ND_PRINT(" (too short, < %zu)",
443 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_at_int));
444 break;
445 }
446
447 ND_PRINT("\n\t Cable-Range: %u-%u, nexthop: ",
448 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_int->cable_start),
449 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_int->cable_end));
450
451 if (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_int->nexthop) == 0)
452 ND_PRINT("self");
453 else
454 ND_PRINT("%u.%u",
455 GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_int->nexthop[0]),
456 GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_int->nexthop[2]));
457
458 ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
459 (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_int->delay)/100),
460 GET_BE_U_4(tlv_ptr.eigrp_tlv_at_int->bandwidth),
461 GET_BE_U_3(tlv_ptr.eigrp_tlv_at_int->mtu),
462 GET_U_1(tlv_ptr.eigrp_tlv_at_int->hopcount),
463 GET_U_1(tlv_ptr.eigrp_tlv_at_int->reliability),
464 GET_U_1(tlv_ptr.eigrp_tlv_at_int->load));
465 break;
466
467 case EIGRP_TLV_AT_EXT:
468 tlv_ptr.eigrp_tlv_at_ext = (const struct eigrp_tlv_at_ext_t *)tlv_tptr;
469 if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_at_ext)) {
470 ND_PRINT(" (too short, < %zu)",
471 sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_at_ext));
472 break;
473 }
474
475 ND_PRINT("\n\t Cable-Range: %u-%u, nexthop: ",
476 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->cable_start),
477 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->cable_end));
478
479 if (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0)
480 ND_PRINT("self");
481 else
482 ND_PRINT("%u.%u",
483 GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_ext->nexthop[0]),
484 GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2]));
485
486 ND_PRINT("\n\t origin-router %u, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
487 GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->origin_router),
488 GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->origin_as),
489 tok2str(eigrp_ext_proto_id_values,"unknown",GET_U_1(tlv_ptr.eigrp_tlv_at_ext->proto_id)),
490 GET_U_1(tlv_ptr.eigrp_tlv_at_ext->flags),
491 GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->tag),
492 GET_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->metric));
493
494 ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
495 (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->delay)/100),
496 GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->bandwidth),
497 GET_BE_U_3(tlv_ptr.eigrp_tlv_at_ext->mtu),
498 GET_U_1(tlv_ptr.eigrp_tlv_at_ext->hopcount),
499 GET_U_1(tlv_ptr.eigrp_tlv_at_ext->reliability),
500 GET_U_1(tlv_ptr.eigrp_tlv_at_ext->load));
501 break;
502
503 /*
504 * FIXME those are the defined TLVs that lack a decoder
505 * you are welcome to contribute code ;-)
506 */
507
508 case EIGRP_TLV_AUTH:
509 case EIGRP_TLV_SEQ:
510 case EIGRP_TLV_MCAST_SEQ:
511 case EIGRP_TLV_IPX_INT:
512 case EIGRP_TLV_IPX_EXT:
513
514 default:
515 if (ndo->ndo_vflag <= 1)
516 print_unknown_data(ndo,tlv_tptr,"\n\t ",tlv_tlen);
517 break;
518 }
519 /* do we want to see an additionally hexdump ? */
520 if (ndo->ndo_vflag > 1)
521 print_unknown_data(ndo,tptr+sizeof(struct eigrp_tlv_header),"\n\t ",
522 eigrp_tlv_len-sizeof(struct eigrp_tlv_header));
523
524 tptr+=eigrp_tlv_len;
525 tlen-=eigrp_tlv_len;
526 }
527 return;
528 trunc:
529 nd_print_trunc(ndo);
530 }
[mirror] the TCPdump network dissector