/src/wireshark/epan/dissectors/packet-eigrp.c
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1 | | /* packet-eigrp.c |
2 | | * Routines for EIGRP dissection |
3 | | * Copyright 2011, Donnie V Savage <dsavage@cisco.com> |
4 | | * |
5 | | * Complete re-write and replaces previous file of same name authored by: |
6 | | * Copyright 2009, Jochen Bartl <jochen.bartl@gmail.co |
7 | | * Copyright 2000, Paul Ionescu <paul@acorp.ro> |
8 | | * |
9 | | * Wireshark - Network traffic analyzer |
10 | | * By Gerald Combs <gerald@wireshark.org> |
11 | | * Copyright 1998 Gerald Combs |
12 | | * |
13 | | * SPDX-License-Identifier: GPL-2.0-or-later |
14 | | */ |
15 | | #include "config.h" |
16 | | |
17 | | #include <epan/packet.h> |
18 | | #include <epan/addr_resolv.h> |
19 | | #include <epan/expert.h> |
20 | | #include <epan/tfs.h> |
21 | | #include <epan/iana-info.h> |
22 | | #include <wsutil/array.h> |
23 | | |
24 | | #include "packet-eigrp.h" |
25 | | #include "packet-ipx.h" |
26 | | #include "packet-atalk.h" |
27 | | |
28 | | /* |
29 | | * Originally Cisco proprietary; now the subject of RFC 7868. |
30 | | */ |
31 | | |
32 | | /** |
33 | | * EIGRP Header size in bytes |
34 | | */ |
35 | 291 | #define EIGRP_HEADER_LENGTH 20 |
36 | | |
37 | | /** |
38 | | * EIGRP Packet Opcodes |
39 | | */ |
40 | | #define EIGRP_OPC_UPDATE 1 /*!< packet containing routing information */ |
41 | | #define EIGRP_OPC_REQUEST 2 /*!< sent to request one or more routes */ |
42 | | #define EIGRP_OPC_QUERY 3 /*!< sent when a routing is in active start */ |
43 | | #define EIGRP_OPC_REPLY 4 /*!< sent in response to a query */ |
44 | 280 | #define EIGRP_OPC_HELLO 5 /*!< sent to maintain a peering session */ |
45 | 11 | #define EIGRP_OPC_IPXSAP 6 /*!< IPX SAP information */ |
46 | | #define EIGRP_OPC_PROBE 7 /*!< for test purposes */ |
47 | 5 | #define EIGRP_OPC_ACK 8 /*!< acknowledge */ |
48 | | #define EIGRP_OPC_STUB 9 /*!< peering operating in restricted mode */ |
49 | | #define EIGRP_OPC_SIAQUERY 10 /*!< QUERY - with relaxed restrictions */ |
50 | | #define EIGRP_OPC_SIAREPLY 11 /*!< REPLY - may contain old routing information */ |
51 | | |
52 | | /** |
53 | | * EIGRP TLV Range definitions |
54 | | * PDM TLV Range |
55 | | * General 0x0000 |
56 | | * IPv4 0x0100 ** TLVs for one and all |
57 | | * ATALK 0x0200 ** legacy |
58 | | * IPX 0x0300 ** discontinued |
59 | | * IPv6 0x0400 ** legacy |
60 | | * Multiprotocol 0x0600 ** wide metrics |
61 | | * MultiTopology 0x00f0 ** deprecated |
62 | | */ |
63 | 319 | #define EIGRP_TLV_RANGEMASK 0xfff0 /*!< should be 0xff00 - opps */ |
64 | 156 | #define EIGRP_TLV_GENERAL 0x0000 |
65 | | |
66 | | /** |
67 | | * 1.2 TLV Definitions ** legacy |
68 | | * These have been deprecated and should not be used for future packets |
69 | | */ |
70 | 32 | #define EIGRP_TLV_IPv4 0x0100 /*!< Classic IPv4 TLV encoding */ |
71 | 14 | #define EIGRP_TLV_ATALK 0x0200 /*!< Classic Appletalk TLV encoding*/ |
72 | 5 | #define EIGRP_TLV_IPX 0x0300 /*!< Classic IPX TLV encoding */ |
73 | 34 | #define EIGRP_TLV_IPv6 0x0400 /*!< Classic IPv6 TLV encoding */ |
74 | | |
75 | | /** |
76 | | * 2.0 Multi-Protocol TLV Definitions |
77 | | * These have been deprecated and should not be used for future packets |
78 | | */ |
79 | 98 | #define EIGRP_TLV_MP 0x0600 /*!< Non-PDM specific encoding */ |
80 | | |
81 | | /** |
82 | | * 3.0 TLV Definitions ** deprecated |
83 | | * These have been deprecated and should not be used for future packets |
84 | | */ |
85 | 331 | #define EIGRP_TLV_MTR 0x00f0 /*!< MTR TLV encoding */ |
86 | | |
87 | | /** |
88 | | * TLV type definitions. Generic (protocol-independent) TLV types are |
89 | | * defined here. Protocol-specific ones are defined elsewhere. |
90 | | */ |
91 | 7 | #define EIGRP_TLV_PARAMETER (EIGRP_TLV_GENERAL | 0x0001) /*!< eigrp parameters */ |
92 | 3 | #define EIGRP_TLV_AUTH (EIGRP_TLV_GENERAL | 0x0002) /*!< authentication */ |
93 | 31 | #define EIGRP_TLV_SEQ (EIGRP_TLV_GENERAL | 0x0003) /*!< sequenced packet */ |
94 | 2 | #define EIGRP_TLV_SW_VERSION (EIGRP_TLV_GENERAL | 0x0004) /*!< software version */ |
95 | 3 | #define EIGRP_TLV_NEXT_MCAST_SEQ (EIGRP_TLV_GENERAL | 0x0005) /*!< */ |
96 | 3 | #define EIGRP_TLV_PEER_STUBINFO (EIGRP_TLV_GENERAL | 0x0006) /*!< stub information */ |
97 | 2 | #define EIGRP_TLV_PEER_TERMINATION (EIGRP_TLV_GENERAL | 0x0007) /*!< peer termination */ |
98 | 17 | #define EIGRP_TLV_PEER_TIDLIST (EIGRP_TLV_GENERAL | 0x0008) /*!< peer sub-topology list */ |
99 | | |
100 | | /** |
101 | | * Route Based TLVs |
102 | | */ |
103 | 181 | #define EIGRP_TLV_TYPEMASK 0x000f |
104 | | #define EIGRP_TLV_REQUEST 0x0001 |
105 | | #define EIGRP_TLV_INTERNAL 0x0002 |
106 | 181 | #define EIGRP_TLV_EXTERNAL 0x0003 |
107 | | #define EIGRP_TLV_COMMUNITY 0x0004 |
108 | | |
109 | | /* Legacy TLV formats */ |
110 | | #define EIGRP_TLV_IPv4_REQ (EIGRP_TLV_IPv4 | EIGRP_TLV_REQUEST) |
111 | | #define EIGRP_TLV_IPv4_INT (EIGRP_TLV_IPv4 | EIGRP_TLV_INTERNAL) |
112 | | #define EIGRP_TLV_IPv4_EXT (EIGRP_TLV_IPv4 | EIGRP_TLV_EXTERNAL) |
113 | | #define EIGRP_TLV_IPv4_COM (EIGRP_TLV_IPv4 | EIGRP_TLV_COMMUNITY) |
114 | | #define EIGRP_TLV_IPX_INT (EIGRP_TLV_IPX | EIGRP_TLV_INTERNAL) |
115 | | #define EIGRP_TLV_IPX_EXT (EIGRP_TLV_IPX | EIGRP_TLV_EXTERNAL) |
116 | | #define EIGRP_TLV_IPX_COM (EIGRP_TLV_IPX | EIGRP_TLV_COMMUNITY) |
117 | | #define EIGRP_TLV_IPv6_INT (EIGRP_TLV_IPv6 | EIGRP_TLV_INTERNAL) |
118 | | #define EIGRP_TLV_IPv6_EXT (EIGRP_TLV_IPv6 | EIGRP_TLV_EXTERNAL) |
119 | | #define EIGRP_TLV_IPv6_COM (EIGRP_TLV_IPv6 | EIGRP_TLV_COMMUNITY) |
120 | | |
121 | | /* Deprecated TLV formats */ |
122 | | #define EIGRP_TLV_AT_INT (EIGRP_TLV_ATALK | EIGRP_TLV_INTERNAL) |
123 | | #define EIGRP_TLV_AT_EXT (EIGRP_TLV_ATALK | EIGRP_TLV_EXTERNAL) |
124 | 7 | #define EIGRP_TLV_AT_CBL (EIGRP_TLV_ATALK | 0x04) |
125 | | #define EIGRP_TLV_MTR_REQ (EIGRP_TLV_MTR | EIGRP_TLV_REQUEST) |
126 | | #define EIGRP_TLV_MTR_INT (EIGRP_TLV_MTR | EIGRP_TLV_INTERNAL) |
127 | | #define EIGRP_TLV_MTR_EXT (EIGRP_TLV_MTR | EIGRP_TLV_EXTERNAL) |
128 | | #define EIGRP_TLV_MTR_COM (EIGRP_TLV_MTR | EIGRP_TLV_COMMUNITY) |
129 | 324 | #define EIGRP_TLV_MTR_TIDLIST (EIGRP_TLV_MTR | 0x0005) |
130 | | |
131 | | /* Current "Wide Metric" TLV formats */ |
132 | | #define EIGRP_TLV_MP_REQ (EIGRP_TLV_MP | EIGRP_TLV_REQUEST) |
133 | | #define EIGRP_TLV_MP_INT (EIGRP_TLV_MP | EIGRP_TLV_INTERNAL) |
134 | | #define EIGRP_TLV_MP_EXT (EIGRP_TLV_MP | EIGRP_TLV_EXTERNAL) |
135 | | #define EIGRP_TLV_MP_COM (EIGRP_TLV_MP | EIGRP_TLV_COMMUNITY) |
136 | | |
137 | | /** |
138 | | * External routes originate from some other protocol - these are them |
139 | | */ |
140 | | #define NULL_PROTID 0 /*!< unknown protocol */ |
141 | | #define IGRP1_PROTID 1 /*!< IGRP.. who's your daddy! */ |
142 | | #define IGRP2_PROTID 2 /*!< EIGRP - Just flat out the best */ |
143 | | #define STATIC_PROTID 3 /*!< Statically configured source */ |
144 | | #define RIP_PROTID 4 /*!< Routing Information Protocol */ |
145 | | #define HELLO_PROTID 5 /*!< Hello? RFC-891 you there? */ |
146 | | #define OSPF_PROTID 6 /*!< OSPF - Open Shortest Path First */ |
147 | | #define ISIS_PROTID 7 /*!< Intermediate System To Intermediate System */ |
148 | | #define EGP_PROTID 8 /*!< Exterior Gateway Protocol */ |
149 | | #define BGP_PROTID 9 /*!< Border Gateway Protocol */ |
150 | | #define IDRP_PROTID 10 /*!< InterDomain Routing Protocol */ |
151 | | #define CONN_PROTID 11 /*!< Connected source */ |
152 | | |
153 | | /** |
154 | | * |
155 | | * extdata flag field definitions |
156 | | */ |
157 | 15 | #define EIGRP_OPAQUE_EXT 0x01 /*!< Route is external */ |
158 | | #define EIGRP_OPAQUE_CD 0x02 /*!< Candidate default route */ |
159 | | |
160 | | /** |
161 | | * Address-Family types are taken from: |
162 | | * http://www.iana.org/assignments/address-family-numbers |
163 | | * to provide a standards based exchange of AFI information between |
164 | | * EIGRP routers. |
165 | | */ |
166 | 7 | #define EIGRP_AF_IPv4 1 /*!< IPv4 (IP version 4) */ |
167 | 9 | #define EIGRP_AF_IPv6 2 /*!< IPv6 (IP version 6) */ |
168 | 16 | #define EIGRP_AF_IPX 11 /*!< IPX */ |
169 | | #define EIGRP_AF_ATALK 12 /*!< Appletalk */ |
170 | 42 | #define EIGRP_SF_COMMON 16384 /*!< Cisco Service Family */ |
171 | 21 | #define EIGRP_SF_IPv4 16385 /*!< Cisco IPv4 Service Family */ |
172 | 21 | #define EIGRP_SF_IPv6 16386 /*!< Cisco IPv6 Service Family */ |
173 | | |
174 | | /** |
175 | | * Authentication types supported by EIGRP |
176 | | */ |
177 | 0 | #define EIGRP_AUTH_TYPE_NONE 0 |
178 | 0 | #define EIGRP_AUTH_TYPE_TEXT 1 |
179 | 1 | #define EIGRP_AUTH_TYPE_MD5 2 |
180 | 1 | #define EIGRP_AUTH_TYPE_MD5_LEN 16 |
181 | 0 | #define EIGRP_AUTH_TYPE_SHA256 3 |
182 | 0 | #define EIGRP_AUTH_TYPE_SHA256_LEN 32 |
183 | | |
184 | | /** |
185 | | * opaque flag field definitions |
186 | | */ |
187 | 15 | #define EIGRP_OPAQUE_SRCWD 0x01 /*!< Route Source Withdraw */ |
188 | 30 | #define EIGRP_OPAQUE_CD 0x02 /*!< Candidate Default */ |
189 | 15 | #define EIGRP_OPAQUE_ACTIVE 0x04 /*!< Route is currently in active state */ |
190 | 15 | #define EIGRP_OPAQUE_REPL 0x08 /*!< Route is replicated from different tableid */ |
191 | | |
192 | | /** |
193 | | * pak flag bit field definitions - 0 (none)-7 source priority |
194 | | */ |
195 | | #define EIGRP_PRIV_DEFAULT 0x00 /* 0 (none)-7 source priority */ |
196 | | #define EIGRP_PRIV_LOW 0x01 |
197 | | #define EIGRP_PRIV_MEDIUM 0x04 |
198 | | #define EIGRP_PRIV_HIGH 0x07 |
199 | | |
200 | | /** |
201 | | * stub bit definitions |
202 | | */ |
203 | 15 | #define EIGRP_PEER_ALLOWS_CONNECTED 0x0001 |
204 | 15 | #define EIGRP_PEER_ALLOWS_STATIC 0x0002 |
205 | 15 | #define EIGRP_PEER_ALLOWS_SUMMARY 0x0004 |
206 | 15 | #define EIGRP_PEER_ALLOWS_REDIST 0x0008 |
207 | 15 | #define EIGRP_PEER_ALLOWS_LEAKING 0x0010 |
208 | 15 | #define EIGRP_PEER_ALLOWS_RCVONLY 0x0020 |
209 | | |
210 | | /* |
211 | | * Init bit definition. First unicast transmitted Update has this |
212 | | * bit set in the flags field of the fixed header. It tells the neighbor |
213 | | * to down-load his topology table. |
214 | | */ |
215 | 15 | #define EIGRP_INIT_FLAG 0x00000001 |
216 | | |
217 | | /* |
218 | | * CR bit (Conditionally Received) definition in flags field on header. Any |
219 | | * packets with the CR-bit set can be accepted by an EIGRP speaker if and |
220 | | * only if a previous Hello was received with the SEQUENCE_TYPE TLV present. |
221 | | * |
222 | | * This allows multicasts to be transmitted in order and reliably at the |
223 | | * same time as unicasts are transmitted. |
224 | | */ |
225 | 15 | #define EIGRP_CR_FLAG 0x00000002 |
226 | | |
227 | | /* |
228 | | * RS bit. The Restart flag is set in the hello and the init |
229 | | * update packets during the nsf signaling period. A nsf-aware |
230 | | * router looks at the RS flag to detect if a peer is restarting |
231 | | * and maintain the adjacency. A restarting router looks at |
232 | | * this flag to determine if the peer is helping out with the restart. |
233 | | */ |
234 | 15 | #define EIGRP_RS_FLAG 0x00000004 |
235 | | |
236 | | /* |
237 | | * EOT bit. The End-of-Table flag marks the end of the start-up updates |
238 | | * sent to a new peer. A nsf restarting router looks at this flag to |
239 | | * determine if it has finished receiving the start-up updates from all |
240 | | * peers. A nsf-aware router waits for this flag before cleaning up |
241 | | * the stale routes from the restarting peer. |
242 | | */ |
243 | 15 | #define EIGRP_EOT_FLAG 0x00000008 |
244 | | |
245 | | /** |
246 | | * EIGRP Virtual Router ID |
247 | | * |
248 | | * Define values to deal with EIGRP virtual router ids. Virtual |
249 | | * router IDs are stored in the upper short of the EIGRP fixed packet |
250 | | * header. The lower short of the packet header continues to be used |
251 | | * as asystem number. |
252 | | * |
253 | | * Virtual Router IDs are PDM-independent. All PDMs will use |
254 | | * VRID_BASE to indicate the 'base' or 'legacy' EIGRP instance. |
255 | | * All PDMs need to initialize their vrid to VRID_BASE for compatibility |
256 | | * with legacy routers. |
257 | | * Once IPv6 supports 'MTR Multicast', it will use the same VRID as |
258 | | * IPv4. No current plans to support VRIDs on IPX. :) |
259 | | * Initial usage of VRID is to signal usage of Multicast topology for |
260 | | * MTR. |
261 | | * |
262 | | * VRID_MCAST is a well known constant, other VRIDs will be determined |
263 | | * programmatic... |
264 | | * |
265 | | * With the addition of SAF the VRID space has been divided into two |
266 | | * segments 0x0000-0x7fff is for EIGRP and vNets, 0x8000-0xffff is |
267 | | * for saf and its associated vNets. |
268 | | */ |
269 | 280 | #define EIGRP_VRID_MASK 0x8001 |
270 | | #define EIGRP_VRID_AF_BASE 0x0000 |
271 | | #define EIGRP_VRID_MCAST_BASE 0x0001 |
272 | | #define EIGRP_VRID_SF_BASE 0x8000 |
273 | | |
274 | | /* Extended Attributes for a destination */ |
275 | 384 | #define EIGRP_ATTR_HDRLEN (2) |
276 | | #define EIGRP_ATTR_MAXDATA (512) |
277 | | |
278 | 233 | #define EIGRP_ATTR_NOOP 0 /*!< No-Op used as offset padding */ |
279 | 31 | #define EIGRP_ATTR_SCALED 1 /*!< Scaled metric values */ |
280 | 11 | #define EIGRP_ATTR_TAG 2 /*!< Tag assigned by Admin for dest */ |
281 | 4 | #define EIGRP_ATTR_COMM 3 /*!< Community attribute for dest */ |
282 | 26 | #define EIGRP_ATTR_JITTER 4 /*!< Variation in path delay */ |
283 | 8 | #define EIGRP_ATTR_QENERGY 5 /*!< Non-Active energy usage along path */ |
284 | 19 | #define EIGRP_ATTR_ENERGY 6 /*!< Active energy usage along path */ |
285 | | |
286 | | /* |
287 | | * Begin EIGRP-BGP interoperability communities |
288 | | */ |
289 | 0 | #define EIGRP_EXTCOMM_SOO_ASFMT 0x0003 /* Site-of-Origin, BGP AS format */ |
290 | 0 | #define EIGRP_EXTCOMM_SOO_ADRFMT 0x0103 /* Site-of-Origin, BGP/EIGRP addr format */ |
291 | | |
292 | | /* |
293 | | * EIGRP Specific communities |
294 | | */ |
295 | 0 | #define EIGRP_EXTCOMM_EIGRP 0x8800 /* EIGRP route information appended*/ |
296 | 0 | #define EIGRP_EXTCOMM_DAD 0x8801 /* EIGRP AS + Delay */ |
297 | 0 | #define EIGRP_EXTCOMM_VRHB 0x8802 /* EIGRP Vector: Reliability + Hop + BW */ |
298 | 0 | #define EIGRP_EXTCOMM_SRLM 0x8803 /* EIGRP System: Reserve +Load + MTU */ |
299 | 0 | #define EIGRP_EXTCOMM_SAR 0x8804 /* EIGRP System: Remote AS + Remote ID */ |
300 | 0 | #define EIGRP_EXTCOMM_RPM 0x8805 /* EIGRP Remote: Protocol + Metric */ |
301 | 0 | #define EIGRP_EXTCOMM_VRR 0x8806 /* EIGRP Vecmet: Rsvd + (internal) Routerid */ |
302 | | |
303 | | /* SAF types */ |
304 | | #define EIGRP_SVCDATA_COMPLETE 0x01 /*!< Data is attached */ |
305 | | #define EIGRP_SVCDATA_TRIMMED 0x02 /*!< Data was trimmed from service */ |
306 | | |
307 | | /* SAF Defined Numbers */ |
308 | | #define SAF_SERVICE_ID_CAPMAN 100 /*!< Capabilities Manager */ |
309 | | #define SAF_SERVICE_ID_UC 101 /*!< Unified Communications */ |
310 | | #define SAF_SERVICE_ID_PFR 102 /*!< Performance Routing */ |
311 | | |
312 | | /* Forward declaration we need below (if using proto_reg_handoff... |
313 | | as a prefs callback) */ |
314 | | void proto_reg_handoff_eigrp(void); |
315 | | void proto_register_eigrp(void); |
316 | | |
317 | | /* Initialize the protocol and registered fields */ |
318 | | static int proto_eigrp; |
319 | | |
320 | | /* header */ |
321 | | static int hf_eigrp_version; |
322 | | static int hf_eigrp_opcode; |
323 | | static int hf_eigrp_flags; |
324 | | static int hf_eigrp_sequence; |
325 | | static int hf_eigrp_acknowledge; |
326 | | static int hf_eigrp_vrid; |
327 | | static int hf_eigrp_as; |
328 | | static int ett_eigrp; |
329 | | |
330 | | /* packet header flags */ |
331 | | static int hf_eigrp_flags_init; |
332 | | static int hf_eigrp_flags_restart; |
333 | | static int hf_eigrp_flags_eot; |
334 | | static int hf_eigrp_flags_condrecv; |
335 | | |
336 | | static int ett_eigrp_flags; |
337 | | static int * const eigrp_flag_fields[] = { |
338 | | &hf_eigrp_flags_init, |
339 | | &hf_eigrp_flags_condrecv, |
340 | | &hf_eigrp_flags_restart, |
341 | | &hf_eigrp_flags_eot, |
342 | | NULL |
343 | | }; |
344 | | |
345 | | /* tlv */ |
346 | | static int hf_eigrp_tlv_type; |
347 | | static int hf_eigrp_tlv_len; |
348 | | static int hf_eigrp_tid; |
349 | | static int hf_eigrp_afi; |
350 | | static int hf_eigrp_nullpad; |
351 | | |
352 | | static int ett_eigrp_tlv; |
353 | | static int ett_eigrp_tlv_metric; |
354 | | static int ett_eigrp_tlv_attr; |
355 | | static int ett_eigrp_tlv_extdata; |
356 | | |
357 | | /* param */ |
358 | | static int hf_eigrp_par_k1; |
359 | | static int hf_eigrp_par_k2; |
360 | | static int hf_eigrp_par_k3; |
361 | | static int hf_eigrp_par_k4; |
362 | | static int hf_eigrp_par_k5; |
363 | | static int hf_eigrp_par_k6; |
364 | | static int hf_eigrp_par_holdtime; |
365 | | |
366 | | /* auth */ |
367 | | static int hf_eigrp_auth_type; |
368 | | static int hf_eigrp_auth_len; |
369 | | static int hf_eigrp_auth_keyid; |
370 | | static int hf_eigrp_auth_keyseq; |
371 | | static int hf_eigrp_auth_digest; |
372 | | |
373 | | /* seq */ |
374 | | static int hf_eigrp_seq_addrlen; |
375 | | static int hf_eigrp_seq_ipv4addr; |
376 | | static int hf_eigrp_seq_ipv6addr; |
377 | | |
378 | | /* multicast seq */ |
379 | | static int hf_eigrp_next_mcast_seq; |
380 | | |
381 | | /* stub flags */ |
382 | | static int hf_eigrp_stub_flags; |
383 | | static int hf_eigrp_stub_flags_connected; |
384 | | static int hf_eigrp_stub_flags_static; |
385 | | static int hf_eigrp_stub_flags_summary; |
386 | | static int hf_eigrp_stub_flags_recvonly; |
387 | | static int hf_eigrp_stub_flags_redist; |
388 | | static int hf_eigrp_stub_flags_leakmap; |
389 | | |
390 | | static int ett_eigrp_stub_flags; |
391 | | static int * const eigrp_stub_flag_fields[] = { |
392 | | &hf_eigrp_stub_flags_connected, |
393 | | &hf_eigrp_stub_flags_static, |
394 | | &hf_eigrp_stub_flags_summary, |
395 | | &hf_eigrp_stub_flags_redist, |
396 | | &hf_eigrp_stub_flags_leakmap, |
397 | | &hf_eigrp_stub_flags_recvonly, |
398 | | NULL |
399 | | }; |
400 | | |
401 | | /* tid */ |
402 | | static int hf_eigrp_tidlist_tid; |
403 | | static int hf_eigrp_tidlist_flags; |
404 | | static int hf_eigrp_tidlist_len; |
405 | | static int ett_eigrp_tidlist; |
406 | | |
407 | | /* 1.2 and 3.0 metric */ |
408 | | static int hf_eigrp_legacy_metric_delay; |
409 | | static int hf_eigrp_legacy_metric_bw; |
410 | | static int hf_eigrp_legacy_metric_mtu; |
411 | | static int hf_eigrp_legacy_metric_hopcount; |
412 | | static int hf_eigrp_legacy_metric_rel; |
413 | | static int hf_eigrp_legacy_metric_load; |
414 | | static int hf_eigrp_legacy_metric_intag; |
415 | | |
416 | | /* 3.0 metric */ |
417 | | static int hf_eigrp_legacy_metric_tag; |
418 | | |
419 | | /* 2.0 metric */ |
420 | | static int hf_eigrp_metric_offset; |
421 | | static int hf_eigrp_metric_priority; |
422 | | static int hf_eigrp_metric_rel; |
423 | | static int hf_eigrp_metric_load; |
424 | | static int hf_eigrp_metric_mtu; |
425 | | static int hf_eigrp_metric_hopcount; |
426 | | static int hf_eigrp_metric_reserved; |
427 | | |
428 | | /* router id*/ |
429 | | static int hf_eigrp_routerid; |
430 | | |
431 | | /* protocol dependent module route flags */ |
432 | | static int hf_eigrp_metric_flags_srcwd; |
433 | | static int hf_eigrp_metric_flags_cd; |
434 | | static int hf_eigrp_metric_flags_active; |
435 | | static int hf_eigrp_metric_flags_repl; |
436 | | static int ett_eigrp_metric_flags; |
437 | | |
438 | | /* extended metrics */ |
439 | | static int hf_eigrp_attr_opcode; |
440 | | static int hf_eigrp_attr_offset; |
441 | | static int hf_eigrp_attr_scaled; |
442 | | static int hf_eigrp_attr_tag; |
443 | | static int hf_eigrp_attr_jitter; |
444 | | static int hf_eigrp_attr_qenergy; |
445 | | static int hf_eigrp_attr_energy; |
446 | | |
447 | | /* route external data */ |
448 | | static int hf_eigrp_extdata_origrid; |
449 | | static int hf_eigrp_extdata_as; |
450 | | static int hf_eigrp_extdata_tag; |
451 | | static int hf_eigrp_extdata_metric; |
452 | | static int hf_eigrp_extdata_reserved; |
453 | | static int hf_eigrp_extdata_proto; |
454 | | |
455 | | static int hf_eigrp_extdata_flag_ext; |
456 | | static int hf_eigrp_extdata_flag_cd; |
457 | | static int ett_eigrp_extdata_flags; |
458 | | |
459 | | /* ipv4 address */ |
460 | | static int hf_eigrp_ipv4_nexthop; |
461 | | static int hf_eigrp_ipv4_prefixlen; |
462 | | |
463 | | /* ipv6 address */ |
464 | | static int hf_eigrp_ipv6_nexthop; |
465 | | static int hf_eigrp_ipv6_prefixlen; |
466 | | |
467 | | /* ipx address */ |
468 | | static int hf_eigrp_ipx_nexthop_net; |
469 | | static int hf_eigrp_ipx_nexthop_host; |
470 | | static int hf_eigrp_ipx_extdata_routerid; |
471 | | static int hf_eigrp_ipx_extdata_delay; |
472 | | static int hf_eigrp_ipx_extdata_metric; |
473 | | static int hf_eigrp_ipx_dest; |
474 | | |
475 | | /* appletalk address */ |
476 | | static int hf_eigrp_atalk_routerid; |
477 | | |
478 | | /* SAF services */ |
479 | | static int hf_eigrp_saf_service; |
480 | | static int hf_eigrp_saf_subservice; |
481 | | static int hf_eigrp_saf_guid; |
482 | | |
483 | | static int hf_eigrp_saf_reachability_afi; |
484 | | static int hf_eigrp_saf_reachability_port; |
485 | | static int hf_eigrp_saf_reachability_protocol; |
486 | | static int hf_eigrp_saf_reachability_addr_ipv4; |
487 | | static int hf_eigrp_saf_reachability_addr_ipv6; |
488 | | static int hf_eigrp_saf_reachability_addr_hex; |
489 | | static int ett_eigrp_saf_reachability; |
490 | | |
491 | | static int hf_eigrp_saf_data_length; |
492 | | static int hf_eigrp_saf_data_sequence; |
493 | | static int hf_eigrp_saf_data_type; |
494 | | |
495 | | /* Generated from convert_proto_tree_add_text.pl */ |
496 | | static int hf_eigrp_ipx_address; |
497 | | static int hf_eigrp_release; |
498 | | static int hf_eigrp_tlv_version; |
499 | | static int hf_eigrp_ipv4_destination; |
500 | | static int hf_eigrp_ipv6_destination; |
501 | | static int hf_eigrp_appletalk_cable_range; |
502 | | static int hf_eigrp_nexthop_address; |
503 | | static int hf_eigrp_cable_range; |
504 | | static int hf_eigrp_metric_delay; |
505 | | static int hf_eigrp_metric_bandwidth; |
506 | | static int hf_eigrp_checksum; |
507 | | static int hf_eigrp_checksum_status; |
508 | | static int hf_eigrp_metric_comm_type; |
509 | | static int ett_metric_comm_type; |
510 | | static int hf_eigrp_extcomm_eigrp_flag; |
511 | | static int hf_eigrp_extcomm_eigrp_tag; |
512 | | static int hf_eigrp_extcomm_eigrp_res; |
513 | | static int hf_eigrp_extcomm_eigrp_rid; |
514 | | static int hf_eigrp_extcomm_eigrp_as; |
515 | | static int hf_eigrp_extcomm_eigrp_sdly; |
516 | | static int hf_eigrp_extcomm_eigrp_rel; |
517 | | static int hf_eigrp_extcomm_eigrp_hop; |
518 | | static int hf_eigrp_extcomm_eigrp_sbw; |
519 | | static int hf_eigrp_extcomm_eigrp_load; |
520 | | static int hf_eigrp_extcomm_eigrp_mtu; |
521 | | static int hf_eigrp_extcomm_eigrp_xas; |
522 | | static int hf_eigrp_extcomm_eigrp_xrid; |
523 | | static int hf_eigrp_extcomm_eigrp_xproto; |
524 | | static int hf_eigrp_extcomm_eigrp_xmetric; |
525 | | |
526 | | |
527 | | |
528 | | static expert_field ei_eigrp_checksum_bad; |
529 | | static expert_field ei_eigrp_unreachable; |
530 | | static expert_field ei_eigrp_seq_addrlen; |
531 | | static expert_field ei_eigrp_peer_termination; |
532 | | static expert_field ei_eigrp_tlv_type; |
533 | | static expert_field ei_eigrp_auth_type; |
534 | | static expert_field ei_eigrp_peer_termination_graceful; |
535 | | static expert_field ei_eigrp_auth_len; |
536 | | static expert_field ei_eigrp_tlv_len; |
537 | | static expert_field ei_eigrp_afi; |
538 | | static expert_field ei_eigrp_prefixlen; |
539 | | static expert_field ei_eigrp_tlv_trunc; |
540 | | |
541 | | /* some extra handle that might be needed */ |
542 | | static dissector_handle_t ipxsap_handle; |
543 | | static dissector_table_t media_type_table; |
544 | | |
545 | | static const value_string eigrp_opcode2string[] = { |
546 | | { EIGRP_OPC_UPDATE, "Update" }, |
547 | | { EIGRP_OPC_REQUEST, "Request" }, |
548 | | { EIGRP_OPC_QUERY, "Query" }, |
549 | | { EIGRP_OPC_REPLY, "Reply" }, |
550 | | { EIGRP_OPC_HELLO, "Hello" }, |
551 | | { EIGRP_OPC_IPXSAP, "IPX/SAP Update" }, |
552 | | { EIGRP_OPC_PROBE, "Route Probe" }, |
553 | | { EIGRP_OPC_ACK, "Hello (Ack)" }, |
554 | | { EIGRP_OPC_STUB, "Stub-Info" }, |
555 | | { EIGRP_OPC_SIAQUERY, "SIA-Query" }, |
556 | | { EIGRP_OPC_SIAREPLY, "SIA-Reply" }, |
557 | | { 0, NULL } |
558 | | }; |
559 | | |
560 | | static const value_string eigrp_tlv2string[] = { |
561 | | /* General TLV formats */ |
562 | | { EIGRP_TLV_PARAMETER, "Parameters"}, |
563 | | { EIGRP_TLV_AUTH, "Authentication"}, |
564 | | { EIGRP_TLV_SEQ, "Sequence"}, |
565 | | { EIGRP_TLV_SW_VERSION, "Software Version"}, |
566 | | { EIGRP_TLV_NEXT_MCAST_SEQ, "Next multicast sequence"}, |
567 | | { EIGRP_TLV_PEER_STUBINFO, "Peer Stub Information"}, |
568 | | { EIGRP_TLV_PEER_TERMINATION, "Peer Termination"}, |
569 | | { EIGRP_TLV_PEER_TIDLIST, "Peer Topology ID List"}, |
570 | | |
571 | | /* Legacy TLV formats */ |
572 | | { EIGRP_TLV_IPv4_INT, "Internal Route(IPv4)"}, |
573 | | { EIGRP_TLV_IPv4_EXT, "External Route(IPv4)"}, |
574 | | { EIGRP_TLV_IPv4_COM, "Ext-Community(IPv4)"}, |
575 | | { EIGRP_TLV_IPv6_INT, "Internal Route(IPv6)"}, |
576 | | { EIGRP_TLV_IPv6_EXT, "External Route(IPv6)"}, |
577 | | { EIGRP_TLV_IPv6_COM, "Ext-Community(IPv6)"}, |
578 | | { EIGRP_TLV_IPX_INT, "IPX Internal Route(IPX)"}, |
579 | | { EIGRP_TLV_IPX_EXT, "IPX External Route(IPX)"}, |
580 | | |
581 | | /* Deprecated TLV formats */ |
582 | | { EIGRP_TLV_AT_INT, "Internal Route(ATALK)"}, |
583 | | { EIGRP_TLV_AT_EXT, "External Route(ATALK)"}, |
584 | | { EIGRP_TLV_AT_CBL, "Cable Configuration(ATALK)"}, |
585 | | { EIGRP_TLV_MTR_REQ, "Request(MTR)"}, |
586 | | { EIGRP_TLV_MTR_INT, "Internal Route(MTR)"}, |
587 | | { EIGRP_TLV_MTR_EXT, "External Route(MTR)"}, |
588 | | { EIGRP_TLV_MTR_COM, "Ext-Community(MTR)"}, |
589 | | { EIGRP_TLV_MTR_TIDLIST, "TopologyID List"}, |
590 | | |
591 | | /* Current "Wide Metric" TLV formats */ |
592 | | { EIGRP_TLV_MP_REQ, "Request"}, |
593 | | { EIGRP_TLV_MP_INT, "Internal Route"}, |
594 | | { EIGRP_TLV_MP_EXT, "External Route"}, |
595 | | { EIGRP_TLV_MP_COM, "Ext-Community"}, |
596 | | |
597 | | { 0, NULL} |
598 | | }; |
599 | | |
600 | | const value_string eigrp_proto2string[] = { |
601 | | { IGRP1_PROTID, "IGRP"}, |
602 | | { IGRP2_PROTID, "EIGRP"}, |
603 | | { STATIC_PROTID, "Static Route"}, |
604 | | { RIP_PROTID, "RIP"}, |
605 | | { HELLO_PROTID, "Hello"}, |
606 | | { OSPF_PROTID, "OSPF"}, |
607 | | { ISIS_PROTID, "IS-IS"}, |
608 | | { EGP_PROTID, "EGP"}, |
609 | | { BGP_PROTID, "BGP"}, |
610 | | { IDRP_PROTID, "IDRP"}, |
611 | | { CONN_PROTID, "Connected Route"}, |
612 | | { 0, NULL} |
613 | | }; |
614 | | |
615 | | static const value_string eigrp_auth2string[] = { |
616 | | { EIGRP_AUTH_TYPE_TEXT, "TEXT"}, |
617 | | { EIGRP_AUTH_TYPE_MD5, "MD5"}, |
618 | | { EIGRP_AUTH_TYPE_SHA256, "SHA256"}, |
619 | | { 0, NULL}, |
620 | | }; |
621 | | |
622 | | static const value_string eigrp_vrid2string[] = { |
623 | | { EIGRP_VRID_AF_BASE, "(Address-Family)"}, |
624 | | { EIGRP_VRID_SF_BASE, "(Service-Family)"}, |
625 | | { EIGRP_VRID_MCAST_BASE, "(Multi-Cast)"}, |
626 | | { 0, NULL} |
627 | | }; |
628 | | |
629 | | static const value_string eigrp_afi2string[] = { |
630 | | { EIGRP_AF_IPv4, "IPv4"}, |
631 | | { EIGRP_AF_IPv6, "IPv6"}, |
632 | | { EIGRP_AF_IPX, "IPX"}, |
633 | | { EIGRP_AF_ATALK, "Appletalk"}, |
634 | | { EIGRP_SF_COMMON, "Service Family"}, |
635 | | { EIGRP_SF_IPv4, "IPv4 Service Family"}, |
636 | | { EIGRP_SF_IPv6, "IPv6 Service Family"}, |
637 | | { 0, NULL} |
638 | | }; |
639 | | |
640 | | static const value_string eigrp_attr_opcode2string[] = { |
641 | | { EIGRP_ATTR_NOOP, "NO-OP for padding"}, |
642 | | { EIGRP_ATTR_SCALED, "Scaled Metric"}, |
643 | | { EIGRP_ATTR_TAG, "Admin Tag"}, |
644 | | { EIGRP_ATTR_COMM, "Community"}, |
645 | | { EIGRP_ATTR_JITTER, "Jitter"}, |
646 | | { EIGRP_ATTR_QENERGY, "Non-Active energy"}, |
647 | | { EIGRP_ATTR_ENERGY, "Active energy"}, |
648 | | { 0, NULL} |
649 | | }; |
650 | | |
651 | | static const value_string eigrp_saf_type2string[] = { |
652 | | { EIGRP_SVCDATA_COMPLETE, "Attached Service Data"}, |
653 | | { EIGRP_SVCDATA_TRIMMED, "Trimmed Service Data"}, |
654 | | { 0, NULL} |
655 | | }; |
656 | | |
657 | | static const value_string eigrp_saf_srv2string[] = { |
658 | | { SAF_SERVICE_ID_CAPMAN, "Capabilities Manager"}, |
659 | | { SAF_SERVICE_ID_UC, "Unified Communications"}, |
660 | | { SAF_SERVICE_ID_PFR, "Performance Routing"}, |
661 | | { 0, NULL} |
662 | | }; |
663 | | |
664 | | static const value_string eigrp_metric_comm_type_vals[] = { |
665 | | { EIGRP_EXTCOMM_EIGRP, "EIGRP_EXTCOMM_EIGRP"}, |
666 | | { EIGRP_EXTCOMM_VRR, "EIGRP_EXTCOMM_VRR"}, |
667 | | { EIGRP_EXTCOMM_DAD, "EIGRP_EXTCOMM_DAD"}, |
668 | | { EIGRP_EXTCOMM_VRHB, "EIGRP_EXTCOMM_VRHB"}, |
669 | | { EIGRP_EXTCOMM_SRLM, "EIGRP_EXTCOMM_SRLM"}, |
670 | | { EIGRP_EXTCOMM_SAR, "EIGRP_EXTCOMM_SAR"}, |
671 | | { EIGRP_EXTCOMM_RPM, "EIGRP_EXTCOMM_RPM"}, |
672 | | { EIGRP_EXTCOMM_SOO_ASFMT, "EIGRP_EXTCOMM_SOO_ASFMT"}, |
673 | | { EIGRP_EXTCOMM_SOO_ADRFMT, "EIGRP_EXTCOMM_SOO_ADRFMT"}, |
674 | | { 0, NULL} |
675 | | }; |
676 | | |
677 | | |
678 | | /** |
679 | | *@fn void dissect_eigrp_parameter (proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, proto_item *ti) |
680 | | * |
681 | | * |
682 | | * @param[in,out] tree detail dissection result |
683 | | * @param[in] tvb packet data |
684 | | * @param[in] pinfo general data about the protocol |
685 | | * @param[in] ti protocol item |
686 | | * |
687 | | * @par |
688 | | * Dissect the Parameter TLV, which is used to convey metric weights and the |
689 | | * hold time. |
690 | | * |
691 | | * @brief |
692 | | * Note the addition of K6 for the new extended metrics, and does not apply to |
693 | | * older TLV packet formats. |
694 | | */ |
695 | | static void |
696 | | dissect_eigrp_parameter (proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, |
697 | | proto_item *ti) |
698 | 7 | { |
699 | 7 | int offset = 0; |
700 | 7 | uint8_t k1, k2, k3, k4, k5; |
701 | | |
702 | 7 | proto_tree_add_item_ret_uint8(tree, hf_eigrp_par_k1, tvb, offset, 1, ENC_BIG_ENDIAN, &k1); |
703 | 7 | offset += 1; |
704 | | |
705 | 7 | proto_tree_add_item_ret_uint8(tree, hf_eigrp_par_k2, tvb, offset, 1, ENC_BIG_ENDIAN, &k2); |
706 | 7 | offset += 1; |
707 | | |
708 | 7 | proto_tree_add_item_ret_uint8(tree, hf_eigrp_par_k3, tvb, offset, 1, ENC_BIG_ENDIAN, &k3); |
709 | 7 | offset += 1; |
710 | | |
711 | 7 | proto_tree_add_item_ret_uint8(tree, hf_eigrp_par_k4, tvb, offset, 1, ENC_BIG_ENDIAN, &k4); |
712 | 7 | offset += 1; |
713 | | |
714 | 7 | proto_tree_add_item_ret_uint8(tree, hf_eigrp_par_k5, tvb, offset, 1, ENC_BIG_ENDIAN, &k5); |
715 | 7 | offset += 1; |
716 | | |
717 | 7 | proto_tree_add_item(tree, hf_eigrp_par_k6, tvb, offset, 1, ENC_BIG_ENDIAN); |
718 | 7 | offset += 1; |
719 | | |
720 | 7 | proto_tree_add_item(tree, hf_eigrp_par_holdtime, tvb, offset, 2, ENC_BIG_ENDIAN); |
721 | | |
722 | 7 | if (k1 == 255 && k2 == 255 && k3 == 255 && k4 == 255 && k5 == 255) { |
723 | 1 | proto_item_append_text(ti, ": Peer Termination"); |
724 | 1 | expert_add_info(pinfo, ti, &ei_eigrp_peer_termination); |
725 | 1 | } |
726 | 7 | } |
727 | | |
728 | | /** |
729 | | *@fn void dissect_eigrp_auth_tlv (proto_tree *tree, tvbuff_t *tvb, |
730 | | * packet_info *pinfo, proto_item *ti) |
731 | | * |
732 | | * @param[in,out] tree detail dissection result |
733 | | * @param[in] tvb packet data |
734 | | * @param[in] pinfo general data about the protocol |
735 | | * @param[in] ti protocol item |
736 | | * |
737 | | * @par |
738 | | * Dissect the Authentication TLV and display digest. Currently MD5 and SHA256 |
739 | | * HMAC is supported. For SHA256, a "secret key" with the HMAC-SHA-256 |
740 | | * password, the source address from which the packet is sent. This combined |
741 | | * string is used as the key for hash calculation. |
742 | | */ |
743 | | static void |
744 | | dissect_eigrp_auth_tlv (proto_tree *tree, tvbuff_t *tvb, |
745 | | packet_info *pinfo, proto_item *ti) |
746 | 3 | { |
747 | 3 | proto_item *ti_auth_type, *ti_auth_len; |
748 | 3 | int offset = 0; |
749 | 3 | uint16_t auth_type, auth_len; |
750 | | |
751 | | /* print out what family we dealing with... */ |
752 | | |
753 | 3 | auth_type = tvb_get_ntohs(tvb, 0); |
754 | 3 | auth_len = tvb_get_ntohs(tvb, 2); |
755 | | |
756 | 3 | proto_item_append_text(ti, " %s", val_to_str_const(auth_type, eigrp_auth2string, "")); |
757 | | |
758 | 3 | ti_auth_type = proto_tree_add_item(tree, hf_eigrp_auth_type, tvb, offset, 2, ENC_BIG_ENDIAN); |
759 | 3 | offset += 2; |
760 | 3 | ti_auth_len = proto_tree_add_item(tree, hf_eigrp_auth_len, tvb, offset, 2, ENC_BIG_ENDIAN); |
761 | 3 | offset += 2; |
762 | 3 | proto_tree_add_item(tree, hf_eigrp_auth_keyid, tvb, offset, 4, ENC_BIG_ENDIAN); |
763 | 3 | offset += 4; |
764 | 3 | proto_tree_add_item(tree, hf_eigrp_auth_keyseq, tvb, offset, 4, ENC_BIG_ENDIAN); |
765 | 3 | offset += 4; |
766 | 3 | proto_tree_add_item(tree, hf_eigrp_nullpad, tvb, offset, 8, ENC_NA); |
767 | 3 | offset += 8; |
768 | | |
769 | 3 | switch (auth_type) { |
770 | 1 | case EIGRP_AUTH_TYPE_MD5: |
771 | 1 | if (EIGRP_AUTH_TYPE_MD5_LEN != auth_len) { |
772 | 1 | expert_add_info_format(pinfo, ti_auth_len, &ei_eigrp_auth_len, "Invalid auth len %u", auth_len); |
773 | 1 | } else { |
774 | 0 | proto_tree_add_item(tree, hf_eigrp_auth_digest, tvb, offset, |
775 | 0 | EIGRP_AUTH_TYPE_MD5_LEN, ENC_NA); |
776 | 0 | } |
777 | 1 | break; |
778 | | |
779 | 0 | case EIGRP_AUTH_TYPE_SHA256: |
780 | 0 | if (EIGRP_AUTH_TYPE_SHA256_LEN != auth_len) { |
781 | 0 | expert_add_info_format(pinfo, ti_auth_len, &ei_eigrp_auth_len, "Invalid auth len %u", auth_len); |
782 | |
|
783 | 0 | } else { |
784 | 0 | proto_tree_add_item(tree, hf_eigrp_auth_digest, tvb, offset, |
785 | 0 | EIGRP_AUTH_TYPE_SHA256_LEN, ENC_NA); |
786 | 0 | } |
787 | 0 | break; |
788 | | |
789 | 0 | case EIGRP_AUTH_TYPE_NONE: |
790 | 0 | case EIGRP_AUTH_TYPE_TEXT: |
791 | 2 | default: |
792 | 2 | expert_add_info_format(pinfo, ti_auth_type, &ei_eigrp_auth_type, "Invalid auth type %u", auth_type); |
793 | 2 | break; |
794 | 3 | } |
795 | 3 | } |
796 | | |
797 | | /** |
798 | | *@fn void dissect_eigrp_seq_tlv (proto_tree *tree, tvbuff_t *tvb, |
799 | | * packet_info *pinfo, proto_item *ti) |
800 | | * |
801 | | * @param[in,out] tree detail dissection result |
802 | | * @param[in] tvb packet data |
803 | | * @param[in] pinfo general data about the protocol |
804 | | * @param[in] ti protocol item |
805 | | * |
806 | | * @par |
807 | | * Dissect the Sequence TLV which consists of the addresses of peers that must |
808 | | * not receive the next multicast packet transmitted. |
809 | | */ |
810 | | static void |
811 | | dissect_eigrp_seq_tlv (proto_tree *tree, tvbuff_t *tvb, |
812 | | packet_info *pinfo, proto_item *ti) |
813 | 31 | { |
814 | 31 | proto_item *ti_addrlen; |
815 | 31 | int offset = 0; |
816 | 31 | uint8_t addr_len; |
817 | | |
818 | 524 | while (tvb_reported_length_remaining(tvb, offset) > 0) { |
819 | 497 | addr_len = tvb_get_uint8(tvb, offset); |
820 | 497 | ti_addrlen = proto_tree_add_item(tree, hf_eigrp_seq_addrlen, tvb, offset, 1, ENC_BIG_ENDIAN); |
821 | 497 | offset += 1; |
822 | | |
823 | 497 | if (tvb_reported_length_remaining(tvb, offset) < addr_len) { |
824 | | /* The remaining part of the TLV is shorter than the address it should contain */ |
825 | 3 | expert_add_info(pinfo, ti, &ei_eigrp_tlv_trunc); |
826 | 3 | break; |
827 | 3 | } |
828 | | |
829 | 494 | switch (addr_len) { |
830 | 23 | case 4: |
831 | | /* IPv4 */ |
832 | 23 | proto_tree_add_item(tree, hf_eigrp_seq_ipv4addr, tvb, offset, addr_len, ENC_BIG_ENDIAN); |
833 | 23 | break; |
834 | 7 | case 10: |
835 | | /* IPX */ |
836 | 7 | proto_tree_add_bytes_format_value(tree, hf_eigrp_ipx_address, tvb, offset, addr_len, NULL, |
837 | 7 | "IPX Address: %s", tvb_address_to_str(pinfo->pool, tvb, AT_IPX, 1)); |
838 | 7 | break; |
839 | 12 | case 16: |
840 | | /* IPv6 */ |
841 | 12 | proto_tree_add_item(tree, hf_eigrp_seq_ipv6addr, tvb, offset, addr_len, |
842 | 12 | ENC_NA); |
843 | 12 | break; |
844 | 451 | default: |
845 | 451 | expert_add_info(pinfo, ti_addrlen, &ei_eigrp_seq_addrlen); |
846 | 494 | } |
847 | | |
848 | 493 | offset += addr_len; |
849 | 493 | } |
850 | 31 | } |
851 | | |
852 | | /** |
853 | | *@fn void dissect_eigrp_sw_version (tvbuff_t *tvb, proto_tree *tree, |
854 | | * proto_item *ti) |
855 | | * |
856 | | * @param[in,out] tree detail dissection result |
857 | | * @param[in] tvb packet data |
858 | | * @param[in] ti protocol item |
859 | | * |
860 | | * @par |
861 | | * Dissect Software Version TLV. The older versions of EIGRP sent the IOS |
862 | | * version along with the TLV Version. When EIGRP "plugins" were created, |
863 | | * this as change to send the "Release" of EIGRP to better identify where fixes |
864 | | * are present(missing) |
865 | | */ |
866 | | static void |
867 | | dissect_eigrp_sw_version (tvbuff_t *tvb, proto_tree *tree, |
868 | | proto_item *ti) |
869 | 2 | { |
870 | 2 | int offset = 0; |
871 | 2 | uint8_t ios_rel_major, ios_rel_minor; |
872 | 2 | uint8_t eigrp_rel_major, eigrp_rel_minor; |
873 | | |
874 | 2 | ios_rel_major = tvb_get_uint8(tvb, 0); |
875 | 2 | ios_rel_minor = tvb_get_uint8(tvb, 1); |
876 | 2 | proto_tree_add_item(tree, hf_eigrp_release, tvb, offset, 2, ENC_BIG_ENDIAN); |
877 | 2 | offset += 2; |
878 | 2 | proto_item_append_text(ti, ": EIGRP=%u.%u", ios_rel_major, ios_rel_minor); |
879 | | |
880 | 2 | eigrp_rel_major = tvb_get_uint8(tvb, 2); |
881 | 2 | eigrp_rel_minor = tvb_get_uint8(tvb, 3); |
882 | 2 | proto_tree_add_item(tree, hf_eigrp_tlv_version, tvb, offset, 2, ENC_BIG_ENDIAN); |
883 | 2 | proto_item_append_text(ti, ", TLV=%u.%u", |
884 | 2 | eigrp_rel_major, eigrp_rel_minor); |
885 | 2 | } |
886 | | |
887 | | /** |
888 | | *@fn void dissect_eigrp_next_mcast_seq (tvbuff_t *tvb, proto_tree *tree, |
889 | | * proto_item *ti) |
890 | | * |
891 | | * @param[in,out] tree detail dissection result |
892 | | * @param[in] tvb packet data |
893 | | * @param[in] ti protocol item |
894 | | * |
895 | | * @par |
896 | | * Dissect Next Multicast Sequence TLV, which is part of the Hello with a |
897 | | * Sequence TLV; this gives a two-way binding between the packets and plugs a |
898 | | * hole where a multicast could be received by the wrong peers (due to a |
899 | | * string of lost packets). |
900 | | */ |
901 | | static void |
902 | | dissect_eigrp_next_mcast_seq (tvbuff_t *tvb, proto_tree *tree, |
903 | | proto_item *ti) |
904 | 3 | { |
905 | 3 | proto_tree_add_item(tree, hf_eigrp_next_mcast_seq, tvb, 0, 4, |
906 | 3 | ENC_BIG_ENDIAN); |
907 | 3 | proto_item_append_text(ti, ": %u", tvb_get_ntohl(tvb, 0)); |
908 | 3 | } |
909 | | |
910 | | /** |
911 | | *@fn void dissect_eigrp_peer_stubinfo (tvbuff_t *tvb, proto_tree *tree) |
912 | | * |
913 | | * |
914 | | * @param[in,out] tree detail dissection result |
915 | | * @param[in] tvb packet data |
916 | | * |
917 | | * @par |
918 | | * Dissect the PEER STUB TLV which contains the route types which the Peer will |
919 | | * advertise. This is used to suppress QUERYs from being sent to the Peer |
920 | | */ |
921 | | static void |
922 | | dissect_eigrp_peer_stubinfo (tvbuff_t *tvb, proto_tree *tree) |
923 | 3 | { |
924 | 3 | proto_tree_add_bitmask(tree, tvb, 0, hf_eigrp_stub_flags, ett_eigrp_stub_flags, |
925 | 3 | eigrp_stub_flag_fields, ENC_BIG_ENDIAN); |
926 | 3 | } |
927 | | |
928 | | /** |
929 | | *@fn void dissect_eigrp_peer_termination (packet_info *pinfo, proto_item *ti) |
930 | | * |
931 | | * @param[in] pinfo general data about the protocol |
932 | | * @param[in] ti protocol item |
933 | | * |
934 | | * @par |
935 | | * Dissect Peer Termination TLV. This TLV has no parameters and is used to |
936 | | * signal an adjacency should be tore down |
937 | | */ |
938 | | static void |
939 | | dissect_eigrp_peer_termination (packet_info *pinfo, proto_item *ti) |
940 | 2 | { |
941 | 2 | expert_add_info(pinfo, ti, &ei_eigrp_peer_termination_graceful); |
942 | 2 | } |
943 | | |
944 | | /** |
945 | | *@fn void dissect_eigrp_peer_tidlist (proto_tree *tree, tvbuff_t *tvb) |
946 | | * |
947 | | * @param[in,out] tree detail dissection result |
948 | | * @param[in] tvb packet data |
949 | | * |
950 | | * @par |
951 | | * Dissect the Topology Identifier List TLV. This TLV was introduced as part |
952 | | * of the "MTR (Multi-Topology Routing) Project to support sub topologies |
953 | | * within a given Autonomous System. The following represents the format of |
954 | | * the TID list |
955 | | * |
956 | | * 0 1 2 3 |
957 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
958 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
959 | | * | Flags | Length | |
960 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
961 | | * | Variable Length TID (two bytes) list | |
962 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
963 | | */ |
964 | | static void |
965 | | dissect_eigrp_peer_tidlist (proto_tree *tree, tvbuff_t *tvb) |
966 | 13 | { |
967 | 13 | proto_tree *sub_tree; |
968 | 13 | int offset = 0; |
969 | 13 | uint16_t size; |
970 | | |
971 | 13 | proto_tree_add_item(tree, hf_eigrp_tidlist_flags, tvb, offset, 2, |
972 | 13 | ENC_BIG_ENDIAN); |
973 | 13 | offset += 2; |
974 | | |
975 | 13 | size = tvb_get_ntohs(tvb, offset) / 2; |
976 | 13 | proto_tree_add_item(tree, hf_eigrp_tidlist_len, tvb, offset, 2, |
977 | 13 | ENC_BIG_ENDIAN); |
978 | 13 | offset += 2; |
979 | | |
980 | 13 | sub_tree = proto_tree_add_subtree_format(tree, tvb, offset, (size*2), ett_eigrp_tidlist, NULL, "%d TIDs", size); |
981 | 985 | for (; size ; size--) { |
982 | 972 | proto_tree_add_item(sub_tree, hf_eigrp_tidlist_tid, tvb, offset, 2, |
983 | 972 | ENC_BIG_ENDIAN); |
984 | 972 | offset += 2; |
985 | 972 | } |
986 | 13 | } |
987 | | |
988 | | /** |
989 | | *@fn int dissect_eigrp_extdata_flags (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
990 | | * |
991 | | * @param[in,out] tree detail dissection result |
992 | | * @param[in] tvb packet data |
993 | | * @param[in] offset current byte offset in packet being processed |
994 | | * |
995 | | * @return int number of bytes process |
996 | | * |
997 | | * @par |
998 | | * Dissect the Flags field in the external data section of an external |
999 | | * route.The following represents the format of the bit field |
1000 | | * |
1001 | | * 7 6 5 4 3 2 1 0 |
1002 | | * +-+-+-+-+-+-+-+-+ |
1003 | | * | Flags | |
1004 | | * +-+-+-+-+-+-+-+-+ |
1005 | | * | | |
1006 | | * | +- Route is External *not used* |
1007 | | * +--- Route is Candidate Default |
1008 | | */ |
1009 | | static int |
1010 | | dissect_eigrp_extdata_flags (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1011 | 8 | { |
1012 | 8 | proto_tree *sub_tree; |
1013 | 8 | tvbuff_t *sub_tvb; |
1014 | | |
1015 | | /* Decode the route flags field */ |
1016 | 8 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, 1, ett_eigrp_extdata_flags, NULL, "External Flags"); |
1017 | 8 | sub_tvb = tvb_new_subset_remaining(tvb, offset); |
1018 | | |
1019 | 8 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_flag_ext, sub_tvb, 0, 1, |
1020 | 8 | ENC_BIG_ENDIAN); |
1021 | 8 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_flag_cd, sub_tvb, 0, 1, |
1022 | 8 | ENC_BIG_ENDIAN); |
1023 | | |
1024 | 8 | offset += 1; |
1025 | 8 | return offset; |
1026 | 8 | } |
1027 | | |
1028 | | /** |
1029 | | *@fn int dissect_eigrp_metric_flags (proto_tree *tree, tvbuff_t *tvb, unsigned offset, int limit) |
1030 | | * |
1031 | | * @param[in,out] tree detail dissection result |
1032 | | * @param[in] tvb packet data |
1033 | | * @param[in] offset current byte offset in packet being processed |
1034 | | * @param[in] limit maximum number of bytes which can be process |
1035 | | * |
1036 | | * @return int number of bytes process |
1037 | | * |
1038 | | * @par |
1039 | | * Dissect Protocol Dependent Module (PDM) Flags field in the route metric |
1040 | | * section of an internal and external route. The following represents the |
1041 | | * format of the bit field |
1042 | | * |
1043 | | * MSB LSB |
1044 | | * 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 |
1045 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1046 | | * | Flags | MP Flags | |
1047 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1048 | | * | | | |
1049 | | * | | +- Route is Replicated |
1050 | | * | +--- Route is Active |
1051 | | * +----- Source Withdraw |
1052 | | */ |
1053 | | static int |
1054 | | dissect_eigrp_metric_flags (proto_tree *tree, tvbuff_t *tvb, unsigned offset, int limit) |
1055 | 175 | { |
1056 | 175 | proto_tree *sub_tree; |
1057 | 175 | tvbuff_t *sub_tvb; |
1058 | | |
1059 | | /* Decode the route flags field */ |
1060 | 175 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, limit, ett_eigrp_metric_flags, NULL, "Flags"); |
1061 | 175 | sub_tvb = tvb_new_subset_length(tvb, offset, limit); |
1062 | | |
1063 | | /* just care about 'flags' byte, there are no MP flags for now */ |
1064 | 175 | proto_tree_add_item(sub_tree, hf_eigrp_metric_flags_srcwd, sub_tvb, 0, 1, |
1065 | 175 | ENC_BIG_ENDIAN); |
1066 | 175 | proto_tree_add_item(sub_tree, hf_eigrp_metric_flags_cd, sub_tvb, 0, 1, |
1067 | 175 | ENC_BIG_ENDIAN); |
1068 | 175 | proto_tree_add_item(sub_tree, hf_eigrp_metric_flags_active, sub_tvb, 0, 1, |
1069 | 175 | ENC_BIG_ENDIAN); |
1070 | 175 | proto_tree_add_item(sub_tree, hf_eigrp_metric_flags_repl, sub_tvb, 0, 1, |
1071 | 175 | ENC_BIG_ENDIAN); |
1072 | | |
1073 | 175 | offset += limit; |
1074 | 175 | return offset; |
1075 | 175 | } |
1076 | | |
1077 | | /** |
1078 | | *@fn void dissect_eigrp_ipv4_addrs (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1079 | | * packet_info *pinfo, unsigned offset, int unreachable) |
1080 | | * |
1081 | | * @param[in,out] tree detail dissection result |
1082 | | * @param[in] tvb packet data |
1083 | | * @param[in] pinfo general data about the protocol |
1084 | | * @param[in] offset current byte offset in packet being processed |
1085 | | * |
1086 | | * @par |
1087 | | * Dissect all IPv4 address from offset though the end of the packet |
1088 | | */ |
1089 | | static void |
1090 | | dissect_eigrp_ipv4_addrs (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1091 | | packet_info *pinfo, unsigned offset, int unreachable) |
1092 | 33 | { |
1093 | 33 | uint8_t length; |
1094 | 33 | ws_in4_addr ip_addr; |
1095 | 33 | int addr_len; |
1096 | 33 | proto_item *ti_prefixlen, *ti_dst; |
1097 | 33 | bool first = true; |
1098 | | |
1099 | 451 | for (; tvb_reported_length_remaining(tvb, offset) > 0; offset += (1 + addr_len)) { |
1100 | 446 | length = tvb_get_uint8(tvb, offset); |
1101 | 446 | addr_len = tvb_get_ipv4_addr_with_prefix_len(tvb, offset + 1, &ip_addr, length); |
1102 | | |
1103 | 446 | if (addr_len < 0) { |
1104 | | /* Invalid prefix length, more than 32 bits */ |
1105 | 28 | ti_prefixlen = proto_tree_add_item(tree, hf_eigrp_ipv4_prefixlen, |
1106 | 28 | tvb, offset, 1, ENC_BIG_ENDIAN); |
1107 | 28 | expert_add_info_format(pinfo, ti_prefixlen, &ei_eigrp_prefixlen, "Invalid prefix length %u, must be <= 32", length); |
1108 | 28 | break; /* We don't know how long this address is */ |
1109 | 418 | } else { |
1110 | 418 | address addr; |
1111 | | |
1112 | 418 | proto_tree_add_item(tree, hf_eigrp_ipv4_prefixlen, tvb, offset, 1, |
1113 | 418 | ENC_BIG_ENDIAN); |
1114 | 418 | offset += 1; |
1115 | 418 | set_address(&addr, AT_IPv4, 4, &ip_addr); |
1116 | 418 | ti_dst = proto_tree_add_ipv4(tree, hf_eigrp_ipv4_destination, tvb, offset, addr_len, ip_addr); |
1117 | | |
1118 | | /* add it to the top level line */ |
1119 | 418 | proto_item_append_text(ti," %c %s/%u", first ? '=':',', |
1120 | 418 | address_to_str(pinfo->pool, &addr), length); |
1121 | | |
1122 | 418 | if (unreachable) { |
1123 | 0 | expert_add_info(pinfo, ti_dst, &ei_eigrp_unreachable); |
1124 | 0 | } |
1125 | 418 | } |
1126 | 418 | first = false; |
1127 | 418 | } |
1128 | 33 | } |
1129 | | |
1130 | | /** |
1131 | | *@fn void dissect_eigrp_ipv6_addrs (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1132 | | * packet_info *pinfo, unsigned offset, int unreachable) |
1133 | | * |
1134 | | * @param[in,out] tree detail dissection result |
1135 | | * @param[in] tvb packet data |
1136 | | * @param[in] pinfo general data about the protocol |
1137 | | * @param[in] offset current byte offset in packet being processed |
1138 | | * |
1139 | | * @par |
1140 | | * Dissect all IPv6 address from offset though the end of the packet |
1141 | | */ |
1142 | | static void |
1143 | | dissect_eigrp_ipv6_addrs (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1144 | | packet_info *pinfo, unsigned offset, int unreachable) |
1145 | 38 | { |
1146 | 38 | uint8_t length; |
1147 | 38 | int addr_len; |
1148 | 38 | ws_in6_addr addr; |
1149 | 38 | address addr_str; |
1150 | 38 | proto_item *ti_prefixlen, *ti_dst; |
1151 | 38 | bool first = true; |
1152 | | |
1153 | 626 | for (; tvb_reported_length_remaining(tvb, offset) > 0; offset += (1 + addr_len)) { |
1154 | 608 | length = tvb_get_uint8(tvb, offset); |
1155 | 608 | addr_len = tvb_get_ipv6_addr_with_prefix_len(tvb, offset + 1, &addr, length); |
1156 | | |
1157 | 608 | if (addr_len < 0) { |
1158 | | /* Invalid prefix length, more than 128 bits */ |
1159 | 20 | ti_prefixlen = proto_tree_add_item(tree, hf_eigrp_ipv6_prefixlen, |
1160 | 20 | tvb, offset, 1, ENC_BIG_ENDIAN); |
1161 | 20 | expert_add_info_format(pinfo, ti_prefixlen, &ei_eigrp_prefixlen, "Invalid prefix length %u, must be <= 128", length); |
1162 | 20 | break; /* We don't know how long this address is */ |
1163 | 588 | } else { |
1164 | 588 | proto_tree_add_item(tree, hf_eigrp_ipv6_prefixlen, tvb, offset, 1, |
1165 | 588 | ENC_BIG_ENDIAN); |
1166 | 588 | offset += 1; |
1167 | | |
1168 | 588 | if ((length < 128) && (length % 8 == 0)) { |
1169 | 257 | addr_len++; |
1170 | 257 | } |
1171 | | |
1172 | 588 | set_address(&addr_str, AT_IPv6, 16, addr.bytes); |
1173 | 588 | ti_dst = proto_tree_add_ipv6(tree, hf_eigrp_ipv6_destination, tvb, offset, addr_len, &addr); |
1174 | | |
1175 | | /* add it to the top level line */ |
1176 | 588 | proto_item_append_text(ti," %c %s/%u", first ? '=':',', |
1177 | 588 | address_to_str(pinfo->pool, &addr_str), length); |
1178 | | |
1179 | 588 | if (unreachable) { |
1180 | 0 | expert_add_info(pinfo, ti_dst, &ei_eigrp_unreachable); |
1181 | 0 | } |
1182 | 588 | } |
1183 | 588 | first = false; |
1184 | 588 | } |
1185 | 38 | } |
1186 | | |
1187 | | /** |
1188 | | *@fn int dissect_eigrp_ipx_addrs (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1189 | | * packet_info *pinfo, unsigned offset, int unreachable) |
1190 | | * |
1191 | | * @param[in,out] tree detail dissection result |
1192 | | * @param[in] tvb packet data |
1193 | | * @param[in] pinfo general data about the protocol |
1194 | | * @param[in] offset current byte offset in packet being processed |
1195 | | * |
1196 | | * @return int number of bytes process |
1197 | | * |
1198 | | * @par |
1199 | | * Dissect all IPX address from offset though the end of the packet |
1200 | | */ |
1201 | | static int |
1202 | | dissect_eigrp_ipx_addrs (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1203 | | packet_info *pinfo, unsigned offset, int unreachable) |
1204 | 5 | { |
1205 | 5 | proto_item *ti_dst; |
1206 | | |
1207 | 5 | ti_dst = proto_tree_add_item(tree, hf_eigrp_ipx_dest, tvb, offset, 4, |
1208 | 5 | ENC_NA); |
1209 | | |
1210 | | /* add it to the top level line */ |
1211 | 5 | proto_item_append_text(ti," = %s", ipxnet_to_str_punct(pinfo->pool, tvb_get_ntohl(tvb, offset), ' ')); |
1212 | | |
1213 | 5 | if (unreachable) { |
1214 | 0 | expert_add_info(pinfo, ti_dst, &ei_eigrp_unreachable); |
1215 | 0 | } |
1216 | | |
1217 | 5 | offset +=4; |
1218 | 5 | return offset; |
1219 | 5 | } |
1220 | | |
1221 | | /** |
1222 | | *@fn void dissect_eigrp_services (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1223 | | * packet_info *pinfo, unsigned offset) |
1224 | | * |
1225 | | * @param[in,out] tree detail dissection result |
1226 | | * @param[in] tvb packet data |
1227 | | * @param[in] pinfo general data about the protocol |
1228 | | * @param[in] ti protocol item |
1229 | | * @param[in] offset current byte offset in packet being processed |
1230 | | * |
1231 | | * @par |
1232 | | * Dissect all SAF Services from offset though the end of the packet. The |
1233 | | * following represents the format of a SAF Service: |
1234 | | * |
1235 | | * 0 1 2 3 |
1236 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
1237 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1238 | | * | Service | SubService | |
1239 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1240 | | * | GUID | |
1241 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1242 | | * | GUID(cont) | |
1243 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1244 | | * | GUID(cont) | |
1245 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1246 | | * | GUID(cont) | |
1247 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1248 | | * | Type | Length | |
1249 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1250 | | * | Reachability AFI | Reachability Port | |
1251 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1252 | | * | Reachability Protocol | Reachability Addr | |
1253 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1254 | | * | Reachability Addr(cont) | |
1255 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1256 | | * | Reachability Addr(cont) | |
1257 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1258 | | * | Reachability Addr(cont) | |
1259 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1260 | | * | Reachability Addr(cont) | Sequence | |
1261 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1262 | | * | Sequence(cont) |\/\/\/ Service Data \/\/\/| |
1263 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1264 | | * |
1265 | | */ |
1266 | | static void |
1267 | | dissect_eigrp_services (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1268 | | packet_info *pinfo, unsigned offset) |
1269 | 21 | { |
1270 | 21 | int afi, length, remaining; |
1271 | 21 | int sub_offset; |
1272 | 21 | proto_item *sub_ti; |
1273 | 21 | proto_tree *sub_tree, *reach_tree; |
1274 | 21 | tvbuff_t *sub_tvb, *reach_tvb; |
1275 | 21 | uint16_t service, sub_service; |
1276 | | |
1277 | 21 | remaining = tvb_captured_length_remaining(tvb, offset); |
1278 | 21 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, remaining, ett_eigrp_tlv_metric, &sub_ti, "SAF Service "); |
1279 | 21 | sub_tvb = tvb_new_subset_length(tvb, offset, remaining); |
1280 | 21 | sub_offset = 0; |
1281 | | |
1282 | 85 | for (; tvb_reported_length_remaining(sub_tvb, sub_offset) > 0; ) { |
1283 | 70 | service = tvb_get_ntohs(sub_tvb, sub_offset); |
1284 | 70 | proto_item_append_text(sub_ti, "%c %s", (sub_offset == 0 ? '=':','), |
1285 | 70 | val_to_str_const(service, eigrp_saf_srv2string, "")); |
1286 | | |
1287 | 70 | sub_service = tvb_get_ntohs(sub_tvb, sub_offset+2); |
1288 | 70 | proto_item_append_text(ti, "%c %u:%u", (sub_offset == 0 ? '=':','), |
1289 | 70 | service, sub_service); |
1290 | | |
1291 | 70 | proto_tree_add_item(sub_tree, hf_eigrp_saf_service, sub_tvb, |
1292 | 70 | sub_offset, 2, ENC_BIG_ENDIAN); |
1293 | 70 | sub_offset += 2; |
1294 | 70 | proto_tree_add_item(sub_tree, hf_eigrp_saf_subservice, sub_tvb, |
1295 | 70 | sub_offset, 2, ENC_BIG_ENDIAN); |
1296 | 70 | sub_offset += 2; |
1297 | 70 | proto_tree_add_item(sub_tree, hf_eigrp_saf_guid, sub_tvb, |
1298 | 70 | sub_offset, GUID_LEN, ENC_BIG_ENDIAN); |
1299 | 70 | sub_offset += GUID_LEN; |
1300 | | |
1301 | 70 | proto_tree_add_item(sub_tree, hf_eigrp_saf_data_type, sub_tvb, |
1302 | 70 | sub_offset, 2, ENC_BIG_ENDIAN); |
1303 | 70 | sub_offset += 2; |
1304 | 70 | length = tvb_get_ntohs(sub_tvb, sub_offset); |
1305 | 70 | proto_tree_add_item(sub_tree, hf_eigrp_saf_data_length, sub_tvb, |
1306 | 70 | sub_offset, 2, ENC_BIG_ENDIAN); |
1307 | 70 | sub_offset += 2; |
1308 | | |
1309 | | /* |
1310 | | * Reachability information |
1311 | | */ |
1312 | 70 | reach_tree = proto_tree_add_subtree(sub_tree, sub_tvb, sub_offset, 22, |
1313 | 70 | ett_eigrp_saf_reachability, NULL, "Reachability"); |
1314 | 70 | reach_tvb = tvb_new_subset_length(sub_tvb, sub_offset, 22); |
1315 | | |
1316 | 70 | afi = tvb_get_ntohs(reach_tvb, 0); |
1317 | 70 | proto_tree_add_item(reach_tree, hf_eigrp_saf_reachability_afi, |
1318 | 70 | reach_tvb, 0, 2, ENC_BIG_ENDIAN); |
1319 | 70 | proto_tree_add_item(reach_tree, hf_eigrp_saf_reachability_port, |
1320 | 70 | reach_tvb, 2, 2, ENC_BIG_ENDIAN); |
1321 | 70 | proto_tree_add_item(reach_tree, hf_eigrp_saf_reachability_protocol, |
1322 | 70 | reach_tvb, 4, 2, ENC_BIG_ENDIAN); |
1323 | | |
1324 | 70 | switch (afi) { |
1325 | 1 | case EIGRP_AF_IPv4: |
1326 | 1 | proto_tree_add_item(reach_tree, hf_eigrp_saf_reachability_addr_ipv4, |
1327 | 1 | reach_tvb, 6, 4, ENC_BIG_ENDIAN); |
1328 | 1 | proto_tree_add_item(reach_tree, hf_eigrp_nullpad, reach_tvb, 10, 12, |
1329 | 1 | ENC_NA); |
1330 | 1 | break; |
1331 | | |
1332 | 1 | case EIGRP_AF_IPv6: |
1333 | 1 | proto_tree_add_item(reach_tree, hf_eigrp_saf_reachability_addr_ipv6, |
1334 | 1 | reach_tvb, 6, 16, ENC_NA); |
1335 | 1 | break; |
1336 | 63 | default: |
1337 | | /* just print zeros... */ |
1338 | 63 | proto_tree_add_item(reach_tree, hf_eigrp_saf_reachability_addr_hex, |
1339 | 63 | reach_tvb, 6, 16, ENC_NA); |
1340 | 63 | break; |
1341 | 70 | } |
1342 | 64 | sub_offset += 22; |
1343 | | |
1344 | 64 | proto_tree_add_item(sub_tree, hf_eigrp_saf_data_sequence, sub_tvb, |
1345 | 64 | sub_offset, 4, ENC_BIG_ENDIAN); |
1346 | 64 | sub_offset += 4; |
1347 | | |
1348 | 64 | if (length > 0) { |
1349 | 41 | tvbuff_t *xml_tvb; |
1350 | 41 | char *test_string, *tok; |
1351 | | |
1352 | | /* |
1353 | | * Service-Data is usually (but not always) plain text, specifically |
1354 | | * XML. If it "looks like" XML (begins with optional white-space |
1355 | | * followed by a '<'), try XML. Otherwise, try plain-text. |
1356 | | */ |
1357 | 41 | xml_tvb = tvb_new_subset_length(sub_tvb, sub_offset, length); |
1358 | 41 | test_string = (char*)tvb_get_string_enc(pinfo->pool, xml_tvb, 0, (length < 32 ? |
1359 | 41 | length : 32), ENC_ASCII); |
1360 | 41 | tok = strtok(test_string, " \t\r\n"); |
1361 | | |
1362 | 41 | if (tok && tok[0] == '<') { |
1363 | | /* Looks like XML */ |
1364 | 0 | dissector_try_string_with_data(media_type_table, "application/xml", |
1365 | 0 | xml_tvb, pinfo, sub_tree, true, NULL); |
1366 | 41 | } else { |
1367 | | /* Try plain text */ |
1368 | 41 | dissector_try_string_with_data(media_type_table, "text/plain", |
1369 | 41 | xml_tvb, pinfo, sub_tree, true, NULL); |
1370 | 41 | } |
1371 | 41 | } |
1372 | 64 | sub_offset += length; |
1373 | 64 | } |
1374 | 21 | } |
1375 | | |
1376 | | /** |
1377 | | *@fn int dissect_eigrp_legacy_metric (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1378 | | * |
1379 | | * @param[in,out] tree detail dissection result |
1380 | | * @param[in] tvb packet data |
1381 | | * @param[in] offset current byte offset in packet being processed |
1382 | | * |
1383 | | * @return int number of bytes process |
1384 | | * |
1385 | | * @par |
1386 | | * Dissect the TLV Versions 1.2 (legacy) and 3.0 (deprecated) metric |
1387 | | * sections. The following represents the format |
1388 | | * |
1389 | | * 0 1 2 3 |
1390 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
1391 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1392 | | * | Scaled Delay | |
1393 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1394 | | * | Scaled Bandwidth | |
1395 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1396 | | * | MTU | Hopcount | |
1397 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1398 | | * | Reliability | Load | Internal Tag | Flag | |
1399 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1400 | | * |
1401 | | */ |
1402 | | static int |
1403 | | dissect_eigrp_legacy_metric (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1404 | 82 | { |
1405 | 82 | proto_tree *sub_tree; |
1406 | 82 | tvbuff_t *sub_tvb; |
1407 | | |
1408 | 82 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, 16, ett_eigrp_tlv_metric, NULL, "Legacy Metric"); |
1409 | 82 | sub_tvb = tvb_new_subset_length(tvb, offset, 16); |
1410 | | |
1411 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_delay, sub_tvb, |
1412 | 82 | 0, 4, ENC_BIG_ENDIAN); |
1413 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_bw, sub_tvb, |
1414 | 82 | 4, 4, ENC_BIG_ENDIAN); |
1415 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_mtu, sub_tvb, |
1416 | 82 | 8, 3, ENC_BIG_ENDIAN); |
1417 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_hopcount, sub_tvb, |
1418 | 82 | 11, 1, ENC_BIG_ENDIAN); |
1419 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_rel, sub_tvb, |
1420 | 82 | 12, 1, ENC_BIG_ENDIAN); |
1421 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_load, sub_tvb, |
1422 | 82 | 13, 1, ENC_BIG_ENDIAN); |
1423 | 82 | proto_tree_add_item(sub_tree, hf_eigrp_legacy_metric_intag, sub_tvb, |
1424 | 82 | 14, 1, ENC_BIG_ENDIAN); |
1425 | | |
1426 | | /* Decode the route flags field */ |
1427 | 82 | dissect_eigrp_metric_flags(sub_tree, sub_tvb, 15, 1); |
1428 | | |
1429 | 82 | offset += 16; |
1430 | 82 | return offset; |
1431 | 82 | } |
1432 | | |
1433 | | /** |
1434 | | *@fn int dissect_eigrp_ipx_extdata (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1435 | | * |
1436 | | * @param[in,out] tree detail dissection result |
1437 | | * @param[in] tvb packet data |
1438 | | * @param[in] offset current byte offset in packet being processed |
1439 | | * |
1440 | | * @return int number of bytes process |
1441 | | * |
1442 | | * @par |
1443 | | * Dissect the IPX External data for the TLV versions 1.2 and 3.0. |
1444 | | * The following represents the format |
1445 | | * |
1446 | | * 0 1 2 3 |
1447 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
1448 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1449 | | * | Ext RouterID | |
1450 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1451 | | * | Ext Router ID | |
1452 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1453 | | * | Ext Autonomous System Number | |
1454 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1455 | | * | Route Tag | |
1456 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1457 | | * | Ext Protocol | Ext Flags | External Metric | |
1458 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1459 | | * | External Delay | |
1460 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1461 | | */ |
1462 | | static int |
1463 | | dissect_eigrp_ipx_extdata (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1464 | 2 | { |
1465 | 2 | proto_tree *sub_tree; |
1466 | 2 | tvbuff_t *sub_tvb; |
1467 | 2 | int sub_offset = 0; |
1468 | | |
1469 | 2 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, 20, ett_eigrp_tlv_extdata, NULL, "External Data"); |
1470 | 2 | sub_tvb = tvb_new_subset_length(tvb, offset, 20); |
1471 | | |
1472 | | /* Decode the external route source info */ |
1473 | 2 | proto_tree_add_item(sub_tree, hf_eigrp_ipx_extdata_routerid, sub_tvb, |
1474 | 2 | sub_offset, 6, ENC_NA); |
1475 | 2 | sub_offset += 6; |
1476 | 2 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_as, sub_tvb, |
1477 | 2 | sub_offset, 4, ENC_BIG_ENDIAN); |
1478 | 2 | sub_offset += 4; |
1479 | 2 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_tag, sub_tvb, |
1480 | 2 | sub_offset, 4, ENC_BIG_ENDIAN); |
1481 | 2 | sub_offset += 4; |
1482 | 2 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_proto, sub_tvb, |
1483 | 2 | sub_offset, 1, ENC_BIG_ENDIAN); |
1484 | 2 | sub_offset += 1; |
1485 | | |
1486 | | /* Decode the external route flags */ |
1487 | 2 | dissect_eigrp_extdata_flags(sub_tree, sub_tvb, sub_offset); |
1488 | 2 | sub_offset += 1; |
1489 | | |
1490 | | /* and the rest of it... */ |
1491 | 2 | proto_tree_add_item(sub_tree, hf_eigrp_ipx_extdata_metric, |
1492 | 2 | sub_tvb, sub_offset, 2, ENC_BIG_ENDIAN); |
1493 | 2 | sub_offset += 2; |
1494 | 2 | proto_tree_add_item(sub_tree, hf_eigrp_ipx_extdata_delay, |
1495 | 2 | sub_tvb, sub_offset, 2, ENC_BIG_ENDIAN); |
1496 | 2 | sub_offset += 2; |
1497 | | |
1498 | 2 | offset += sub_offset; |
1499 | 2 | return offset; |
1500 | 2 | } |
1501 | | |
1502 | | /** |
1503 | | *@fn int dissect_eigrp_extdata (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1504 | | * |
1505 | | * @param[in,out] tree detail dissection result |
1506 | | * @param[in] tvb packet data |
1507 | | * @param[in] offset current byte offset in packet being processed |
1508 | | * |
1509 | | * @return int number of bytes process |
1510 | | * |
1511 | | * @par |
1512 | | * Dissect the external route data for TLV versions 1.2 and 3.0 for all |
1513 | | * protocols except IPX. The following represents the format |
1514 | | * |
1515 | | * 0 1 2 3 |
1516 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
1517 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1518 | | * | Ext Router ID | |
1519 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1520 | | * | Ext Autonomous System Number | |
1521 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1522 | | * | Route Tag | |
1523 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1524 | | * | External Metric | |
1525 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1526 | | * | Reserved | Ext Protocol | Ext Flags | |
1527 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1528 | | */ |
1529 | | static int |
1530 | | dissect_eigrp_extdata (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
1531 | 10 | { |
1532 | 10 | proto_tree *sub_tree; |
1533 | 10 | tvbuff_t *sub_tvb; |
1534 | 10 | int sub_offset = 0; |
1535 | | |
1536 | 10 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, 20, ett_eigrp_tlv_extdata, NULL, "External Data"); |
1537 | 10 | sub_tvb = tvb_new_subset_length(tvb, offset, 20); |
1538 | | |
1539 | | /* Decode the external route source info */ |
1540 | 10 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_origrid, sub_tvb, |
1541 | 10 | sub_offset, 4, ENC_BIG_ENDIAN); |
1542 | 10 | sub_offset += 4; |
1543 | 10 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_as, sub_tvb, |
1544 | 10 | sub_offset, 4, ENC_BIG_ENDIAN); |
1545 | 10 | sub_offset += 4; |
1546 | 10 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_tag, sub_tvb, |
1547 | 10 | sub_offset, 4, ENC_BIG_ENDIAN); |
1548 | 10 | sub_offset += 4; |
1549 | 10 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_metric, sub_tvb, |
1550 | 10 | sub_offset, 4, ENC_BIG_ENDIAN); |
1551 | 10 | sub_offset += 4; |
1552 | 10 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_reserved, sub_tvb, |
1553 | 10 | sub_offset, 2, ENC_BIG_ENDIAN); |
1554 | 10 | sub_offset += 2; |
1555 | 10 | proto_tree_add_item(sub_tree, hf_eigrp_extdata_proto, sub_tvb, |
1556 | 10 | sub_offset, 1, ENC_BIG_ENDIAN); |
1557 | 10 | sub_offset += 1; |
1558 | | |
1559 | | /* Decode the external route flags */ |
1560 | 10 | dissect_eigrp_extdata_flags(sub_tree, sub_tvb, sub_offset); |
1561 | 10 | sub_offset += 1; |
1562 | | |
1563 | 10 | offset += sub_offset; |
1564 | 10 | return offset; |
1565 | 10 | } |
1566 | | |
1567 | | /** |
1568 | | *@fn int dissect_eigrp_nexthop (proto_tree *tree, tvbuff_t *tvb, uint16_t afi, unsigned offset) |
1569 | | * |
1570 | | * @param[in,out] tree detail dissection result |
1571 | | * @param[in] tvb packet data |
1572 | | * @param[in] afi IANA address family indicator |
1573 | | * @param[in] offset current byte offset in packet being processed |
1574 | | * |
1575 | | * @return int number of bytes process |
1576 | | * |
1577 | | * @par |
1578 | | * Dissect the next hop field which is in the "route TLVs". This function will |
1579 | | * handle all the various protocol AFIs and return the appropriate number of |
1580 | | * bytes processed |
1581 | | */ |
1582 | | static int |
1583 | | dissect_eigrp_nexthop (proto_tree *tree, tvbuff_t *tvb, uint16_t afi, unsigned offset) |
1584 | 89 | { |
1585 | | /* dissect dest information */ |
1586 | 89 | switch (afi) { |
1587 | 0 | case EIGRP_SF_IPv4: |
1588 | 3 | case EIGRP_AF_IPv4: |
1589 | 3 | proto_tree_add_item(tree, hf_eigrp_ipv4_nexthop, tvb, offset, 4, |
1590 | 3 | ENC_BIG_ENDIAN); |
1591 | 3 | offset += 4; |
1592 | 3 | break; |
1593 | | |
1594 | 0 | case EIGRP_SF_IPv6: |
1595 | 4 | case EIGRP_AF_IPv6: |
1596 | 4 | proto_tree_add_item(tree, hf_eigrp_ipv6_nexthop, tvb, offset, 16, |
1597 | 4 | ENC_NA); |
1598 | 4 | offset += 16; |
1599 | 4 | break; |
1600 | | |
1601 | 5 | case EIGRP_AF_IPX: |
1602 | 5 | proto_tree_add_item(tree, hf_eigrp_ipx_nexthop_net, tvb, offset, 4, |
1603 | 5 | ENC_NA); |
1604 | 5 | offset += 4; |
1605 | 5 | proto_tree_add_item(tree, hf_eigrp_ipx_nexthop_host, tvb, offset, 6, |
1606 | 5 | ENC_NA); |
1607 | 5 | offset += 6; |
1608 | 5 | break; |
1609 | | |
1610 | 21 | case EIGRP_SF_COMMON: |
1611 | 21 | break; |
1612 | | |
1613 | 56 | default: |
1614 | 56 | break; |
1615 | 89 | } |
1616 | | |
1617 | 89 | return offset; |
1618 | 89 | } |
1619 | | |
1620 | | /** |
1621 | | *@fn void dissect_eigrp_general_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1622 | | * packet_info *pinfo, uint16_t tlv) |
1623 | | * |
1624 | | * @param[in,out] tree detail dissection result |
1625 | | * @param[in] tvb packet data |
1626 | | * @param[in] pinfo general data about the protocol |
1627 | | * @param[in] ti protocol item |
1628 | | * @param[in] tlv Specific TLV in to be dissected |
1629 | | * |
1630 | | * @par |
1631 | | * General EIGRP parameters carry EIGRP management information and are not |
1632 | | * specific to any one routed protocol. |
1633 | | * |
1634 | | */ |
1635 | | static void |
1636 | | dissect_eigrp_general_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1637 | | packet_info *pinfo, uint16_t tlv) |
1638 | 88 | { |
1639 | 88 | switch (tlv) { |
1640 | 7 | case EIGRP_TLV_PARAMETER: |
1641 | 7 | dissect_eigrp_parameter(tree, tvb, pinfo, ti); |
1642 | 7 | break; |
1643 | 3 | case EIGRP_TLV_AUTH: |
1644 | 3 | dissect_eigrp_auth_tlv(tree, tvb, pinfo, ti); |
1645 | 3 | break; |
1646 | 31 | case EIGRP_TLV_SEQ: |
1647 | 31 | dissect_eigrp_seq_tlv(tree, tvb, pinfo, ti); |
1648 | 31 | break; |
1649 | 2 | case EIGRP_TLV_SW_VERSION: |
1650 | 2 | dissect_eigrp_sw_version(tvb, tree, ti); |
1651 | 2 | break; |
1652 | 3 | case EIGRP_TLV_NEXT_MCAST_SEQ: |
1653 | 3 | dissect_eigrp_next_mcast_seq(tvb, tree, ti); |
1654 | 3 | break; |
1655 | 3 | case EIGRP_TLV_PEER_STUBINFO: |
1656 | 3 | dissect_eigrp_peer_stubinfo(tvb, tree); |
1657 | 3 | break; |
1658 | 2 | case EIGRP_TLV_PEER_TERMINATION: |
1659 | 2 | dissect_eigrp_peer_termination(pinfo, ti); |
1660 | 2 | break; |
1661 | 13 | case EIGRP_TLV_PEER_TIDLIST: |
1662 | 13 | dissect_eigrp_peer_tidlist(tree, tvb); |
1663 | 13 | break; |
1664 | 24 | default: |
1665 | 24 | expert_add_info_format(pinfo, ti, &ei_eigrp_tlv_type, "Unknown Generic TLV (0x%04x)", tlv); |
1666 | 24 | break; |
1667 | 88 | } |
1668 | 88 | } |
1669 | | |
1670 | | /** |
1671 | | *@fn void dissect_eigrp_ipv4_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1672 | | * packet_info *pinfo, uint16_t tlv) |
1673 | | * |
1674 | | * @param[in,out] tree detail dissection result |
1675 | | * @param[in] tvb packet data |
1676 | | * @param[in] pinfo general data about the protocol |
1677 | | * @param[in] tlv Specific TLV in to be dissected |
1678 | | * |
1679 | | * @par |
1680 | | * Dissect the Legacy IPv4 route TLV; handles both the internal and external |
1681 | | * TLV types; This packet format is being deprecated and replaced with the |
1682 | | * Multi-Protocol packet formats as of EIGRP Release-8. This TLV format is used |
1683 | | * to maintain backward compatibility between older version so EIGRP, "MTR" |
1684 | | * EIGRP, and current shipping code. |
1685 | | * |
1686 | | * 0 1 2 3 |
1687 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
1688 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1689 | | * | IPv4 Nexthop | |
1690 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1691 | | * | Scaled Delay | |
1692 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1693 | | * | Scaled Bandwidth | |
1694 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1695 | | * | MTU | Hopcount | |
1696 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1697 | | * | Reliability | Load | Internal Tag | Flag | |
1698 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1699 | | */ |
1700 | | static void |
1701 | | dissect_eigrp_ipv4_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1702 | | packet_info *pinfo, uint16_t tlv) |
1703 | 32 | { |
1704 | 32 | unsigned offset = 0; |
1705 | 32 | bool unreachable = false; |
1706 | | |
1707 | 32 | proto_tree_add_item(tree, hf_eigrp_ipv4_nexthop, tvb, offset, 4, |
1708 | 32 | ENC_BIG_ENDIAN); |
1709 | 32 | offset += 4; |
1710 | | |
1711 | | /* dissect external data if needed */ |
1712 | 32 | if ((tlv & EIGRP_TLV_TYPEMASK) == EIGRP_TLV_EXTERNAL) { |
1713 | 1 | offset = dissect_eigrp_extdata(tree, tvb, offset); |
1714 | 1 | } |
1715 | | |
1716 | | /* dissect the metric */ |
1717 | 32 | offset = dissect_eigrp_legacy_metric(tree, tvb, offset); |
1718 | | |
1719 | | /* dissect addresses */ |
1720 | 32 | dissect_eigrp_ipv4_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
1721 | 32 | } |
1722 | | |
1723 | | /** |
1724 | | *@fn void dissect_eigrp_atalk_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1725 | | * proto_item *ti, uint16_t tlv) |
1726 | | * |
1727 | | * @param[in,out] tree detail dissection result |
1728 | | * @param[in] tvb packet data |
1729 | | * @param[in] tlv Specific TLV in to be dissected |
1730 | | * |
1731 | | * @par |
1732 | | * Dissect the legacy AppleTalk route TLV; handles both the internal and external |
1733 | | * TLV type. The following represents the format |
1734 | | */ |
1735 | | static void |
1736 | | dissect_eigrp_atalk_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1737 | | uint16_t tlv) |
1738 | 7 | { |
1739 | 7 | unsigned offset = 0; |
1740 | | |
1741 | | /* cable tlv? */ |
1742 | 7 | if (EIGRP_TLV_AT_CBL == tlv) { |
1743 | 2 | proto_tree_add_item(tree, hf_eigrp_appletalk_cable_range, tvb, 0, 4, ENC_BIG_ENDIAN); |
1744 | 2 | proto_tree_add_item(tree, hf_eigrp_atalk_routerid, tvb, 4, 4, |
1745 | 2 | ENC_BIG_ENDIAN); |
1746 | 2 | proto_item_append_text(ti, ": Cable range= %u-%u, Router ID= %u", |
1747 | 2 | tvb_get_ntohs(tvb, 0), tvb_get_ntohs(tvb, 2), |
1748 | 2 | tvb_get_ntohl(tvb, 4)); |
1749 | | |
1750 | 5 | } else { |
1751 | 5 | proto_tree_add_item(tree, hf_eigrp_nexthop_address, tvb, offset, 4, ENC_BIG_ENDIAN); |
1752 | 5 | offset += 4; |
1753 | | |
1754 | | /* dissect external data if needed */ |
1755 | 5 | if ((tlv & EIGRP_TLV_TYPEMASK) == EIGRP_TLV_EXTERNAL) { |
1756 | 1 | offset = dissect_eigrp_extdata(tree, tvb,offset); |
1757 | 1 | } |
1758 | | |
1759 | | /* dissect the metric */ |
1760 | 5 | offset = dissect_eigrp_legacy_metric(tree, tvb, offset); |
1761 | | |
1762 | | /* dissect cable range */ |
1763 | 5 | proto_tree_add_item(tree, hf_eigrp_cable_range, tvb, offset, 4, ENC_BIG_ENDIAN); |
1764 | 5 | proto_item_append_text(ti, ": %u-%u", |
1765 | 5 | tvb_get_ntohs(tvb, 36), tvb_get_ntohs(tvb, 38)); |
1766 | 5 | } |
1767 | 7 | } |
1768 | | |
1769 | | /** |
1770 | | *@fn void dissect_eigrp_ipv6_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1771 | | * packet_info *pinfo, uint16_t tlv) |
1772 | | * |
1773 | | * @param[in,out] tree detail dissection result |
1774 | | * @param[in] tvb packet data |
1775 | | * @param[in] pinfo general data about the protocol |
1776 | | * @param[in] tlv Specific TLV in to be dissected |
1777 | | * |
1778 | | * @par |
1779 | | * Dissect the Legacy IPv6 route TLV; handles both the internal and external |
1780 | | * TLV types; This packet format is being deprecated and replaced with the |
1781 | | * Multi-Protocol packet formats as of EIGRP Release-8. This TLV format is used |
1782 | | * to maintain backward compatibility between older version so EIGRP, "MTR" |
1783 | | * EIGRP, and current shipping code. |
1784 | | */ |
1785 | | static void |
1786 | | dissect_eigrp_ipv6_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1787 | | packet_info *pinfo, uint16_t tlv) |
1788 | 34 | { |
1789 | 34 | unsigned offset = 0; |
1790 | 34 | bool unreachable = false; |
1791 | | |
1792 | 34 | proto_tree_add_item(tree, hf_eigrp_ipv6_nexthop, tvb, offset, 16, |
1793 | 34 | ENC_NA); |
1794 | 34 | offset += 16; |
1795 | | |
1796 | | /* dissect external data if needed */ |
1797 | 34 | if ((tlv & EIGRP_TLV_TYPEMASK) == EIGRP_TLV_EXTERNAL) { |
1798 | 2 | offset = dissect_eigrp_extdata(tree, tvb, offset); |
1799 | 2 | } |
1800 | | |
1801 | | /* dissect the metric */ |
1802 | 34 | offset = dissect_eigrp_legacy_metric(tree, tvb, offset); |
1803 | | |
1804 | | /* dissect addresses */ |
1805 | 34 | dissect_eigrp_ipv6_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
1806 | 34 | } |
1807 | | |
1808 | | /** |
1809 | | *@fn void dissect_eigrp_ipx_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1810 | | * packet_info *pinfo, uint16_t tlv) |
1811 | | * |
1812 | | * @param[in,out] tree detail dissection result |
1813 | | * @param[in] tvb packet data |
1814 | | * @param[in] pinfo general data about the protocol |
1815 | | * @param[in] tlv Specific TLV in to be dissected |
1816 | | * |
1817 | | * @par |
1818 | | * Dissect the legacy IPX route TLV; handles both the internal and external |
1819 | | * TLV type. The following represents the format |
1820 | | * |
1821 | | * 0 1 2 3 |
1822 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
1823 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1824 | | * | Nexthop Net | |
1825 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1826 | | * | Nexthop Host | |
1827 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1828 | | * | Nexthop Host(cont) | |
1829 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1830 | | * |
1831 | | * Optional External Data: |
1832 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1833 | | * | Ext RouterID | |
1834 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1835 | | * | Ext Router ID | |
1836 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1837 | | * | Ext Autonomous System Number | |
1838 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1839 | | * | Route Tag | |
1840 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1841 | | * | Ext Protocol | Ext Flags | External Metric | |
1842 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1843 | | * | External Delay | |
1844 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1845 | | * |
1846 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1847 | | * | Scaled Delay | |
1848 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1849 | | * | Scaled Delay | Scaled Bandwidth | |
1850 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1851 | | * | Scaled Bandwidth | MTU | |
1852 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1853 | | * | MTU(cont) | Hopcount | Reliability | Load | |
1854 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1855 | | * | Internal Tag | Flag | |
1856 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1857 | | * |
1858 | | * |
1859 | | */ |
1860 | | static void |
1861 | | dissect_eigrp_ipx_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1862 | | packet_info *pinfo, uint16_t tlv) |
1863 | 5 | { |
1864 | 5 | unsigned offset = 0; |
1865 | 5 | bool unreachable = false; |
1866 | | |
1867 | | /* nexthop for route... */ |
1868 | 5 | offset = dissect_eigrp_nexthop(tree, tvb, EIGRP_AF_IPX, offset); |
1869 | | |
1870 | | /* dissect external data if needed */ |
1871 | 5 | if ((tlv & EIGRP_TLV_TYPEMASK) == EIGRP_TLV_EXTERNAL) { |
1872 | 2 | offset = dissect_eigrp_ipx_extdata(tree, tvb, offset); |
1873 | 2 | } |
1874 | | |
1875 | | /* dissect the metric */ |
1876 | 5 | offset = dissect_eigrp_legacy_metric(tree, tvb, offset); |
1877 | | |
1878 | | /* dissect addresses */ |
1879 | 5 | dissect_eigrp_ipx_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
1880 | 5 | } |
1881 | | |
1882 | | /** |
1883 | | *@fn void dissect_eigrp_multi_topology_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1884 | | * packet_info *pinfo, proto_item *ti, uint16_t tlv) |
1885 | | * |
1886 | | * @param[in,out] tree detail dissection result |
1887 | | * @param[in] tvb packet data |
1888 | | * @param[in] pinfo general data about the protocol |
1889 | | * @param[in] ti protocol item |
1890 | | * @param[in] tlv Specific TLV in to be dissected |
1891 | | * |
1892 | | * @par |
1893 | | * Dissect the Multi-Topology route TLV; This packet format has been deprecated |
1894 | | * and replaced with the Multi-Protocol packet formats as of EIGRP Release-8. Of |
1895 | | * course this means it will be around for a long long while. The following |
1896 | | * represents the format |
1897 | | * |
1898 | | * 1 2 3 0 1 1 |
1899 | | * 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 |
1900 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1901 | | * | Reserved | |
1902 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1903 | | * | Topology Identifier | Family Identifier | |
1904 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1905 | | * | Router ID | |
1906 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1907 | | * | Route Tag | |
1908 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1909 | | * | Scaled Delay | |
1910 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1911 | | * | Scaled Bandwidth | |
1912 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1913 | | * | MTU | Hopcount | |
1914 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1915 | | * | Reliability | Load | Internal Tag | Flag | |
1916 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1917 | | * |\/\/\/ NextHop (Family Specific Length) \/\/\/| |
1918 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1919 | | * |\/\/\/ External Route Data (Optional) \/\/\/| |
1920 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1921 | | * |\/\/\/ Destination (Family Specific Length) \/\/\/| |
1922 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
1923 | | * |
1924 | | */ |
1925 | | static void |
1926 | | dissect_eigrp_multi_topology_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
1927 | | packet_info *pinfo, uint16_t tlv) |
1928 | 7 | { |
1929 | 7 | uint16_t afi; |
1930 | 7 | unsigned offset = 2; |
1931 | 7 | bool unreachable = false; |
1932 | | |
1933 | | /* tid for you */ |
1934 | 7 | proto_tree_add_item(tree, hf_eigrp_tid, tvb, offset, 2, ENC_BIG_ENDIAN); |
1935 | 7 | offset += 2; |
1936 | | |
1937 | | /* now it's all about the family */ |
1938 | 7 | proto_tree_add_item_ret_uint16(tree, hf_eigrp_afi, tvb, offset, 2, ENC_BIG_ENDIAN, &afi); |
1939 | 7 | offset += 2; |
1940 | | |
1941 | | /* gota have an id... */ |
1942 | 7 | proto_tree_add_item(tree, hf_eigrp_routerid, tvb, offset, 4, ENC_BIG_ENDIAN); |
1943 | 7 | offset += 4; |
1944 | | |
1945 | | /* tag.. your it! */ |
1946 | 7 | proto_tree_add_item(tree, hf_eigrp_legacy_metric_tag, tvb, offset, 4, ENC_BIG_ENDIAN); |
1947 | 7 | offset += 4; |
1948 | | |
1949 | | /* dissect the metric */ |
1950 | 7 | offset = dissect_eigrp_legacy_metric(tree, tvb, offset); |
1951 | | |
1952 | | /* dissect nexthop */ |
1953 | 7 | offset = dissect_eigrp_nexthop(tree, tvb, afi, offset); |
1954 | | |
1955 | | /* dissect external data if needed */ |
1956 | 7 | if ((tlv & EIGRP_TLV_TYPEMASK) == EIGRP_TLV_EXTERNAL) { |
1957 | 1 | if (afi == EIGRP_AF_IPX) { |
1958 | 0 | offset = dissect_eigrp_ipx_extdata(tree, tvb, offset); |
1959 | 1 | } else { |
1960 | 1 | offset = dissect_eigrp_extdata(tree, tvb, offset); |
1961 | 1 | } |
1962 | 1 | } |
1963 | | |
1964 | | /* dissect dest information */ |
1965 | 7 | switch (afi) { |
1966 | 1 | case EIGRP_AF_IPv4: |
1967 | 1 | dissect_eigrp_ipv4_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
1968 | 1 | break; |
1969 | 1 | case EIGRP_AF_IPv6: |
1970 | 1 | dissect_eigrp_ipv6_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
1971 | 1 | break; |
1972 | 0 | case EIGRP_AF_IPX: |
1973 | 0 | dissect_eigrp_ipx_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
1974 | 0 | break; |
1975 | | |
1976 | 1 | case EIGRP_SF_COMMON: |
1977 | 1 | case EIGRP_SF_IPv4: |
1978 | 1 | case EIGRP_SF_IPv6: |
1979 | 1 | dissect_eigrp_services(ti, tree, tvb, pinfo, offset); |
1980 | 1 | break; |
1981 | | |
1982 | 4 | default: |
1983 | 4 | proto_tree_add_expert_remaining(tree, pinfo, &ei_eigrp_afi, tvb, offset); |
1984 | 7 | } |
1985 | 7 | } |
1986 | | |
1987 | | /** |
1988 | | *@fn int dissect_eigrp_metric_comm (proto_tree *tree, tvbuff_t *tvb, unsigned offset, int limit) |
1989 | | * |
1990 | | * @param[in,out] tree detail dissection result |
1991 | | * @param[in] tvb packet data |
1992 | | * @param[in] offset current byte offset in packet being processed |
1993 | | * @param[in] limit maximum number of bytes which can be process |
1994 | | * |
1995 | | * @return int number of bytes process |
1996 | | * |
1997 | | * @par |
1998 | | * Dissect extended community attached to metric TLVs to support VPNv4 |
1999 | | * deployments, The following represents the format |
2000 | | * |
2001 | | * 0 1 2 3 |
2002 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
2003 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2004 | | * | Type high | Type low(*) | | |
2005 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Value | |
2006 | | * | | |
2007 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2008 | | */ |
2009 | | static int |
2010 | | dissect_eigrp_metric_comm (proto_tree *tree, tvbuff_t *tvb, unsigned offset, int limit) |
2011 | 4 | { |
2012 | 4 | int comm_type; |
2013 | 4 | proto_item* ti; |
2014 | 4 | proto_tree* type_tree; |
2015 | | |
2016 | 6 | while (limit > 0) { |
2017 | 5 | comm_type = tvb_get_ntohs(tvb, offset); |
2018 | 5 | ti = proto_tree_add_uint(tree, hf_eigrp_metric_comm_type, tvb, offset, 2, comm_type); |
2019 | 5 | type_tree = proto_item_add_subtree(ti, ett_metric_comm_type); |
2020 | | |
2021 | 5 | offset += 2; |
2022 | | |
2023 | 5 | switch (comm_type) { |
2024 | | /* |
2025 | | * Tag for this route. It is present for all EIGRP VPNv4 |
2026 | | * routes, internal and external |
2027 | | */ |
2028 | 0 | case EIGRP_EXTCOMM_EIGRP: |
2029 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_flag, tvb, offset, 2, ENC_BIG_ENDIAN); |
2030 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_tag, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2031 | 0 | break; |
2032 | | |
2033 | 0 | case EIGRP_EXTCOMM_VRR: |
2034 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_res, tvb, offset, 2, ENC_BIG_ENDIAN); |
2035 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_rid, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2036 | 0 | break; |
2037 | | |
2038 | | /* |
2039 | | * Vecmetric information for given EIGRP VPNv4 route, |
2040 | | * applies to both internal and external |
2041 | | */ |
2042 | 0 | case EIGRP_EXTCOMM_DAD: |
2043 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_as, tvb, offset, 2, ENC_BIG_ENDIAN); |
2044 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_sdly, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2045 | 0 | break; |
2046 | | |
2047 | 0 | case EIGRP_EXTCOMM_VRHB: |
2048 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_rel, tvb, offset, 1, ENC_BIG_ENDIAN); |
2049 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_hop, tvb, offset+1, 1, ENC_BIG_ENDIAN); |
2050 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_sbw, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2051 | 0 | break; |
2052 | | |
2053 | 0 | case EIGRP_EXTCOMM_SRLM: |
2054 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_res, tvb, offset, 1, ENC_BIG_ENDIAN); |
2055 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_load, tvb, offset+1, 1, ENC_BIG_ENDIAN); |
2056 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_mtu, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2057 | 0 | break; |
2058 | | |
2059 | | /* |
2060 | | * External information for given EIGRP VPNv4 route, |
2061 | | * applies to only to external routes |
2062 | | */ |
2063 | 0 | case EIGRP_EXTCOMM_SAR: |
2064 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_xas, tvb, offset, 2, ENC_BIG_ENDIAN); |
2065 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_xrid, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2066 | 0 | break; |
2067 | | |
2068 | 0 | case EIGRP_EXTCOMM_RPM: |
2069 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_xproto, tvb, offset, 2, ENC_BIG_ENDIAN); |
2070 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_xmetric, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2071 | 0 | break; |
2072 | | |
2073 | 0 | case EIGRP_EXTCOMM_SOO_ASFMT: |
2074 | 0 | case EIGRP_EXTCOMM_SOO_ADRFMT: |
2075 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_as, tvb, offset, 2, ENC_BIG_ENDIAN); |
2076 | 0 | proto_tree_add_item(type_tree, hf_eigrp_extcomm_eigrp_tag, tvb, offset+2, 4, ENC_BIG_ENDIAN); |
2077 | 0 | break; |
2078 | 5 | } |
2079 | | |
2080 | 4 | proto_item_set_len(ti, 8); |
2081 | | |
2082 | | /*on to the next */ |
2083 | 4 | offset += 6; |
2084 | 4 | limit -= 8; |
2085 | | |
2086 | 4 | if (0 != limit%8) { |
2087 | 2 | break; |
2088 | 2 | } |
2089 | | |
2090 | 4 | } |
2091 | | |
2092 | 3 | return offset; |
2093 | 4 | } |
2094 | | |
2095 | | /** |
2096 | | *@fn int dissect_eigrp_wide_metric_attr (proto_tree *tree, tvbuff_t *tvb, |
2097 | | * unsigned offset, int limit) |
2098 | | * |
2099 | | * @param[in,out] tree detail dissection result |
2100 | | * @param[in] tvb packet data |
2101 | | * @param[in] offset current byte offset in packet being processed |
2102 | | * @param[in] limit maximum number of words which should be process |
2103 | | * |
2104 | | * @return int number of bytes process |
2105 | | * |
2106 | | * @par |
2107 | | * Dissect the Metric Attributes which (optionally) are part of the wide-metric |
2108 | | * route TLV. Some of the attributes which effect the metric are controlled by |
2109 | | * K6 which is now part of the Parameter TLV. Also, eh extended community TLV is |
2110 | | * no longer used, as it's now appended to the route |
2111 | | */ |
2112 | | static int |
2113 | | dissect_eigrp_wide_metric_attr (proto_tree *tree, tvbuff_t *tvb, |
2114 | | unsigned offset, int limit) |
2115 | 62 | { |
2116 | 62 | proto_tree *sub_tree; |
2117 | 62 | tvbuff_t *sub_tvb; |
2118 | 62 | int sub_offset; |
2119 | | |
2120 | 62 | uint16_t attr_offset = 0; |
2121 | 62 | uint8_t attr_opcode = 0; |
2122 | | |
2123 | 62 | limit *= 2; /* words to bytes */ |
2124 | | |
2125 | 62 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, limit, ett_eigrp_tlv_attr, NULL, "Attributes"); |
2126 | 62 | sub_tvb = tvb_new_subset_length(tvb, offset, limit); |
2127 | 62 | sub_offset = 0; |
2128 | | |
2129 | 446 | while (limit > 0) { |
2130 | 400 | attr_opcode = tvb_get_uint8(sub_tvb, sub_offset); |
2131 | 400 | proto_tree_add_item(sub_tree, hf_eigrp_attr_opcode, sub_tvb, |
2132 | 400 | sub_offset, 1, ENC_BIG_ENDIAN); |
2133 | 400 | sub_offset += 1; |
2134 | | |
2135 | 400 | attr_offset = tvb_get_uint8(sub_tvb, sub_offset) * 2; |
2136 | 400 | proto_tree_add_item(sub_tree, hf_eigrp_attr_offset, sub_tvb, |
2137 | 400 | sub_offset, 1, ENC_BIG_ENDIAN); |
2138 | 400 | sub_offset += 1; |
2139 | | |
2140 | 400 | switch (attr_opcode) { |
2141 | 233 | case EIGRP_ATTR_NOOP: |
2142 | 233 | break; |
2143 | | |
2144 | 31 | case EIGRP_ATTR_SCALED: |
2145 | | /* TODO: if this corresponds to RFC 7868, 6.9.3.2, should be scaled bandwidth |
2146 | | followed by scaled delay (both 32 bits) ? */ |
2147 | 31 | proto_tree_add_item(sub_tree, hf_eigrp_attr_scaled, sub_tvb, |
2148 | 31 | sub_offset, 4, ENC_BIG_ENDIAN); |
2149 | 31 | break; |
2150 | | |
2151 | 11 | case EIGRP_ATTR_TAG: |
2152 | 11 | proto_tree_add_item(sub_tree, hf_eigrp_attr_tag, sub_tvb, |
2153 | 11 | sub_offset, 4, ENC_BIG_ENDIAN); |
2154 | 11 | break; |
2155 | | |
2156 | 4 | case EIGRP_ATTR_COMM: |
2157 | 4 | dissect_eigrp_metric_comm(sub_tree, |
2158 | 4 | tvb_new_subset_length(sub_tvb, sub_offset, 8), |
2159 | 4 | sub_offset, limit); |
2160 | 4 | break; |
2161 | | |
2162 | 26 | case EIGRP_ATTR_JITTER: |
2163 | | /* TODO: RFC 7868 6.9.3.5 suggests this value should be 6 bytes */ |
2164 | 26 | proto_tree_add_item(sub_tree, hf_eigrp_attr_jitter, sub_tvb, |
2165 | 26 | sub_offset, 4, ENC_BIG_ENDIAN); |
2166 | 26 | break; |
2167 | | |
2168 | 8 | case EIGRP_ATTR_QENERGY: |
2169 | | /* TODO: RFC 7868 6.9.3.6 splits this into separate high and low 16-bit values */ |
2170 | 8 | proto_tree_add_item(sub_tree, hf_eigrp_attr_qenergy, sub_tvb, |
2171 | 8 | sub_offset, 4, ENC_BIG_ENDIAN); |
2172 | 8 | break; |
2173 | | |
2174 | 19 | case EIGRP_ATTR_ENERGY: |
2175 | | /* TODO: RFC 7868 6.9.3.7 splits this into separate high and low 16-bit values */ |
2176 | 19 | proto_tree_add_item(sub_tree, hf_eigrp_attr_energy, sub_tvb, |
2177 | 19 | sub_offset, 4, ENC_BIG_ENDIAN); |
2178 | 19 | break; |
2179 | | |
2180 | 62 | default: |
2181 | 62 | break; |
2182 | 400 | } |
2183 | 384 | sub_offset += attr_offset; |
2184 | 384 | limit -= (EIGRP_ATTR_HDRLEN + attr_offset); |
2185 | 384 | } |
2186 | | |
2187 | 46 | offset += sub_offset; |
2188 | 46 | return offset; |
2189 | 62 | } |
2190 | | |
2191 | | /** |
2192 | | *@fn int dissect_eigrp_wide_metric (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
2193 | | * |
2194 | | * @param[in,out] tree detail dissection result |
2195 | | * @param[in] tvb packet data |
2196 | | * @param[in] offset current byte offset in packet being processed |
2197 | | * |
2198 | | * @return int number of bytes process |
2199 | | * |
2200 | | * @par |
2201 | | * Dissect the latest-n-greatest "Wide"Metric" definition for EIGRP. This |
2202 | | * definition was created to address the higher speed links and should handle |
2203 | | * things until we break the speed of light *wink* |
2204 | | * |
2205 | | * 0 1 2 3 |
2206 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
2207 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2208 | | * | Offset | Priority | Reliability | Load | |
2209 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2210 | | * | MTU | Hopcount | |
2211 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2212 | | * | Delay | |
2213 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2214 | | * | Delay | Bandwidth | |
2215 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2216 | | * | Bandwidth | |
2217 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2218 | | * | Reserved | Flags | |
2219 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2220 | | * |\/\/\/ Extended Metrics (Variable Length) \/\/\/| |
2221 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2222 | | * |
2223 | | */ |
2224 | | static int |
2225 | | dissect_eigrp_wide_metric (proto_tree *tree, tvbuff_t *tvb, unsigned offset) |
2226 | 98 | { |
2227 | 98 | proto_tree *sub_tree; |
2228 | 98 | tvbuff_t *sub_tvb; |
2229 | 98 | int8_t attr_size = 0; |
2230 | 98 | uint64_t big_num; |
2231 | | |
2232 | 98 | sub_tree = proto_tree_add_subtree(tree, tvb, offset, 24, ett_eigrp_tlv_metric, NULL, "Wide Metric"); |
2233 | 98 | sub_tvb = tvb_new_subset_length(tvb, offset, 24); |
2234 | | |
2235 | 98 | attr_size = tvb_get_uint8(sub_tvb, 0); |
2236 | | |
2237 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_offset, |
2238 | 98 | sub_tvb, 0, 1, ENC_BIG_ENDIAN); |
2239 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_priority, |
2240 | 98 | sub_tvb, 1, 1, ENC_BIG_ENDIAN); |
2241 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_rel, |
2242 | 98 | sub_tvb, 2, 1, ENC_BIG_ENDIAN); |
2243 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_load, |
2244 | 98 | sub_tvb, 3, 1, ENC_BIG_ENDIAN); |
2245 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_mtu, |
2246 | 98 | sub_tvb, 4, 3, ENC_BIG_ENDIAN); |
2247 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_hopcount, |
2248 | 98 | sub_tvb, 7, 1, ENC_BIG_ENDIAN); |
2249 | | |
2250 | | /* The one-way latency along an unloaded path to the destination |
2251 | | * expressed in units of nanoseconds per kilobyte. This number is not |
2252 | | * scaled, as is the case with scaled delay. A delay of 0xFFFFFFFFFFFF |
2253 | | * indicates an unreachable route. */ |
2254 | 98 | big_num = tvb_get_ntoh64(sub_tvb, 8); |
2255 | 98 | big_num >>= 16; |
2256 | 98 | if (big_num == UINT64_C(0x0000ffffffffffff)) { |
2257 | 4 | proto_tree_add_uint64_format_value(sub_tree, hf_eigrp_metric_delay, sub_tvb, 8, 6, big_num, "Infinity"); |
2258 | 94 | } else { |
2259 | 94 | proto_tree_add_uint64(sub_tree, hf_eigrp_metric_delay, sub_tvb, 8, 6, big_num); |
2260 | 94 | } |
2261 | | |
2262 | | /* The path bandwidth measured in kilobyte per second as presented by |
2263 | | * the interface. This number is not scaled, as is the case with scaled |
2264 | | * bandwidth. A bandwidth of 0xFFFFFFFFFFFF indicates an unreachable |
2265 | | * route. |
2266 | | */ |
2267 | 98 | big_num = tvb_get_ntoh64(sub_tvb, 14); |
2268 | 98 | big_num >>= 16; |
2269 | 98 | if (big_num == UINT64_C(0x0000ffffffffffff)) { |
2270 | 4 | proto_tree_add_uint64_format_value(sub_tree, hf_eigrp_metric_bandwidth, sub_tvb, 14, 6, big_num, "Infinity"); |
2271 | 94 | } else { |
2272 | 94 | proto_tree_add_uint64(sub_tree, hf_eigrp_metric_bandwidth, sub_tvb, 14, 6, big_num); |
2273 | 94 | } |
2274 | 98 | proto_tree_add_item(sub_tree, hf_eigrp_metric_reserved, sub_tvb, 20, 2, |
2275 | 98 | ENC_BIG_ENDIAN); |
2276 | | |
2277 | | /* Decode the route flags field */ |
2278 | 98 | dissect_eigrp_metric_flags(sub_tree, sub_tvb, 22, 2); |
2279 | 98 | offset += 24; |
2280 | | |
2281 | | /* any extended metric attributes? */ |
2282 | 98 | if (attr_size > 0) { |
2283 | 62 | offset = dissect_eigrp_wide_metric_attr(tree, tvb, offset, attr_size); |
2284 | 62 | } |
2285 | | |
2286 | 98 | return offset; |
2287 | 98 | } |
2288 | | |
2289 | | /** |
2290 | | *@fn void dissect_eigrp_multi_protocol_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
2291 | | * packet_info *pinfo, uint16_t tlv) |
2292 | | |
2293 | | * |
2294 | | * @param[in,out] tree detail dissection result |
2295 | | * @param[in] tvb packet data |
2296 | | * @param[in] ti protocol item |
2297 | | * @param[in] pinfo general data about the protocol |
2298 | | * |
2299 | | * @par |
2300 | | * Dissect the Multi-Protocol (TLV Version 2.0) TLV format definition. The following |
2301 | | * represents the format |
2302 | | * |
2303 | | * 0 1 2 3 |
2304 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
2305 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2306 | | * | Topology Identifier | Family Identifier | |
2307 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2308 | | * | Router ID | |
2309 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2310 | | * | Wide Metric | |
2311 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2312 | | * |\/\/\/ Extended Metrics (Variable Length) \/\/\/| |
2313 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2314 | | * |\/\/\/ NextHop (Family Specific Length) \/\/\/| |
2315 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2316 | | * |\/\/\/ External Route Data (Optional) \/\/\/| |
2317 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2318 | | * |\/\/\/ Destination (Family Specific Length) \/\/\/| |
2319 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2320 | | */ |
2321 | | static void |
2322 | | dissect_eigrp_multi_protocol_tlv (proto_item *ti, proto_tree *tree, tvbuff_t *tvb, |
2323 | | packet_info *pinfo, uint16_t tlv) |
2324 | 98 | { |
2325 | 98 | int offset = 0; |
2326 | 98 | uint16_t afi; |
2327 | 98 | bool unreachable = false; |
2328 | | |
2329 | | /* tid for you */ |
2330 | 98 | proto_tree_add_item(tree, hf_eigrp_tid, tvb, offset, 2, ENC_BIG_ENDIAN); |
2331 | 98 | offset += 2; |
2332 | | |
2333 | | /* now it's all about the family */ |
2334 | 98 | proto_tree_add_item_ret_uint16(tree, hf_eigrp_afi, tvb, offset, 2, ENC_BIG_ENDIAN, &afi); |
2335 | 98 | offset += 2; |
2336 | | |
2337 | | /* gota have an id... */ |
2338 | 98 | proto_tree_add_item(tree, hf_eigrp_routerid, tvb, offset, 4, ENC_BIG_ENDIAN); |
2339 | 98 | offset += 4; |
2340 | | |
2341 | | /* decode the wide metric */ |
2342 | 98 | offset = dissect_eigrp_wide_metric(tree, tvb, offset); |
2343 | | |
2344 | | /* dissect nexthop */ |
2345 | 98 | offset = dissect_eigrp_nexthop(tree, tvb, afi, offset); |
2346 | | |
2347 | | /* dissect external data if needed */ |
2348 | 98 | if ((tlv & EIGRP_TLV_TYPEMASK) == EIGRP_TLV_EXTERNAL) { |
2349 | 5 | if (afi == EIGRP_AF_IPX) { |
2350 | 0 | offset = dissect_eigrp_ipx_extdata(tree, tvb, offset); |
2351 | 5 | } else { |
2352 | 5 | offset = dissect_eigrp_extdata(tree, tvb, offset); |
2353 | 5 | } |
2354 | 5 | } |
2355 | | |
2356 | | /* dissect dest information */ |
2357 | 98 | switch (afi) { |
2358 | 2 | case EIGRP_AF_IPv4: |
2359 | 2 | dissect_eigrp_ipv4_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
2360 | 2 | break; |
2361 | | |
2362 | 3 | case EIGRP_AF_IPv6: |
2363 | 3 | dissect_eigrp_ipv6_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
2364 | 3 | break; |
2365 | | |
2366 | 0 | case EIGRP_AF_IPX: |
2367 | 0 | dissect_eigrp_ipx_addrs(ti, tree, tvb, pinfo, offset, unreachable); |
2368 | 0 | break; |
2369 | | |
2370 | 20 | case EIGRP_SF_COMMON: |
2371 | 20 | case EIGRP_SF_IPv4: |
2372 | 20 | case EIGRP_SF_IPv6: |
2373 | 20 | dissect_eigrp_services(ti, tree, tvb, pinfo, offset); |
2374 | 20 | break; |
2375 | | |
2376 | 49 | default: |
2377 | 49 | proto_tree_add_expert_remaining(tree, pinfo, &ei_eigrp_afi, tvb, offset); |
2378 | 98 | } |
2379 | 98 | } |
2380 | | |
2381 | | /** |
2382 | | *@fn int dissect_eigrp (proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, void *data) |
2383 | | * |
2384 | | * @param[in] tvb packet data |
2385 | | * @param[in] pinfo general data about the protocol |
2386 | | * @param[in,out] tree detail dissection result |
2387 | | * |
2388 | | * @return int 0 if packet is not for this decoder |
2389 | | * |
2390 | | * @par |
2391 | | * This function is called to dissect the packets presented to it. The packet |
2392 | | * data is held in a special buffer referenced here as tvb. The packet info |
2393 | | * structure contains general data about the protocol, and can update |
2394 | | * information here. The tree parameter is where the detail dissection takes |
2395 | | * place. |
2396 | | */ |
2397 | | #include <epan/in_cksum.h> |
2398 | | |
2399 | | static int |
2400 | | dissect_eigrp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) |
2401 | 280 | { |
2402 | 280 | proto_item *ti; |
2403 | 280 | proto_tree *eigrp_tree, *tlv_tree; |
2404 | 280 | unsigned opcode, vrid; |
2405 | 280 | uint16_t tlv; |
2406 | 280 | uint32_t ack, size, offset = EIGRP_HEADER_LENGTH; |
2407 | | |
2408 | | /* Make entries in Protocol column and Info column on summary display */ |
2409 | 280 | col_set_str(pinfo->cinfo, COL_PROTOCOL, "EIGRP"); |
2410 | | |
2411 | | /* This field shows up as the "Info" column in the display; you should use |
2412 | | * it, if possible, to summarize what's in the packet, so that a user |
2413 | | * looking at the list of packets can tell what type of packet it is. See |
2414 | | * section 1.5 for more information. |
2415 | | */ |
2416 | 280 | col_clear(pinfo->cinfo, COL_INFO); |
2417 | | |
2418 | 280 | opcode = tvb_get_uint8(tvb, 1); |
2419 | 280 | ack = tvb_get_ntohl(tvb, 12); |
2420 | 280 | if ((opcode == EIGRP_OPC_HELLO) && (0 != ack)) { |
2421 | 5 | opcode = EIGRP_OPC_ACK; |
2422 | 5 | } |
2423 | | |
2424 | 280 | col_add_str(pinfo->cinfo, COL_INFO, |
2425 | 280 | val_to_str(pinfo->pool, opcode, eigrp_opcode2string, "Unknown OpCode (0x%04x)")); |
2426 | | |
2427 | | /* A protocol dissector may be called in 2 different ways - with, or |
2428 | | * without a non-null "tree" argument. |
2429 | | * Note also that there is no guarantee, the first time the dissector is |
2430 | | * called, whether "tree" will be null or not; your dissector must work |
2431 | | * correctly, building or updating whatever state information is necessary, |
2432 | | * in either case. |
2433 | | */ |
2434 | | /* NOTE: The offset and length values in the call to |
2435 | | * "proto_tree_add_item()" define what data bytes to highlight in the |
2436 | | * hex display window when the line in the protocol tree display |
2437 | | * corresponding to that item is selected. |
2438 | | */ |
2439 | | |
2440 | | /* create display subtree for the protocol */ |
2441 | 280 | ti = proto_tree_add_protocol_format(tree, proto_eigrp, tvb, 0, -1, |
2442 | 280 | "Cisco EIGRP"); |
2443 | 280 | eigrp_tree = proto_item_add_subtree(ti, ett_eigrp); |
2444 | 280 | proto_tree_add_item(eigrp_tree, hf_eigrp_version, tvb, 0, 1, |
2445 | 280 | ENC_BIG_ENDIAN); |
2446 | 280 | proto_tree_add_item(eigrp_tree, hf_eigrp_opcode, tvb, 1, 1, |
2447 | 280 | ENC_BIG_ENDIAN); |
2448 | | |
2449 | 280 | size = tvb_captured_length(tvb); |
2450 | 280 | proto_tree_add_checksum(eigrp_tree, tvb, 2, hf_eigrp_checksum, hf_eigrp_checksum_status, &ei_eigrp_checksum_bad, |
2451 | 280 | pinfo, ip_checksum_tvb(tvb, 0, size), ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY|PROTO_CHECKSUM_IN_CKSUM); |
2452 | | |
2453 | | /* Decode the EIGRP Flags Field */ |
2454 | 280 | proto_tree_add_bitmask(eigrp_tree, tvb, 4, hf_eigrp_flags, ett_eigrp_flags, |
2455 | 280 | eigrp_flag_fields, ENC_BIG_ENDIAN); |
2456 | | |
2457 | 280 | proto_tree_add_item(eigrp_tree, hf_eigrp_sequence, tvb, 8, 4, |
2458 | 280 | ENC_BIG_ENDIAN); |
2459 | 280 | proto_tree_add_item(eigrp_tree, hf_eigrp_acknowledge, tvb, 12, 4, |
2460 | 280 | ENC_BIG_ENDIAN); |
2461 | | |
2462 | | /* print out what family we dealing with... */ |
2463 | 280 | ti = proto_tree_add_item(eigrp_tree, hf_eigrp_vrid, tvb, 16, 2, |
2464 | 280 | ENC_BIG_ENDIAN); |
2465 | 280 | vrid = (tvb_get_ntohs(tvb, 16) & EIGRP_VRID_MASK); |
2466 | 280 | proto_item_append_text(ti, " %s", val_to_str_const(vrid, eigrp_vrid2string, "")); |
2467 | | |
2468 | | /* print autonomous-system */ |
2469 | 280 | proto_tree_add_item(eigrp_tree, hf_eigrp_as, tvb, 18, 2, |
2470 | 280 | ENC_BIG_ENDIAN); |
2471 | | |
2472 | 280 | switch (opcode) { |
2473 | 11 | case EIGRP_OPC_IPXSAP: |
2474 | 11 | call_dissector(ipxsap_handle, |
2475 | 11 | tvb_new_subset_remaining(tvb, EIGRP_HEADER_LENGTH), pinfo, |
2476 | 11 | eigrp_tree); |
2477 | 11 | break; |
2478 | | |
2479 | 266 | default: |
2480 | 502 | while (tvb_reported_length_remaining(tvb, offset) > 0) { |
2481 | 324 | tlv = tvb_get_ntohs(tvb, offset); |
2482 | | |
2483 | | /* it's a rose by the wrong name... */ |
2484 | 324 | if (tlv == EIGRP_TLV_MTR_TIDLIST) { |
2485 | 4 | tlv = EIGRP_TLV_PEER_TIDLIST; |
2486 | 4 | } |
2487 | | |
2488 | 324 | size = tvb_get_ntohs(tvb, offset + 2); |
2489 | 324 | if (size < 4) { |
2490 | | /* |
2491 | | * As the draft says, in section 6.6.2 "Length Field Encoding", |
2492 | | * "The value does includes[sic] the Type and Length fields". |
2493 | | * |
2494 | | * Therefore, it must be at least 4. |
2495 | | */ |
2496 | 5 | proto_tree_add_expert_remaining(eigrp_tree, pinfo, &ei_eigrp_tlv_len, tvb, offset); |
2497 | 5 | return tvb_captured_length(tvb); |
2498 | 5 | } |
2499 | | |
2500 | 319 | tlv_tree = proto_tree_add_subtree(eigrp_tree, tvb, offset, size, ett_eigrp_tlv, &ti, |
2501 | 319 | val_to_str(pinfo->pool, tlv, eigrp_tlv2string, "Unknown TLV (0x%04x)")); |
2502 | | |
2503 | 319 | proto_tree_add_item(tlv_tree, hf_eigrp_tlv_type, tvb, |
2504 | 319 | offset, 2, ENC_BIG_ENDIAN); |
2505 | 319 | proto_tree_add_item(tlv_tree, hf_eigrp_tlv_len, tvb, |
2506 | 319 | (offset + 2), 2, ENC_BIG_ENDIAN); |
2507 | | |
2508 | 319 | switch (tlv & EIGRP_TLV_RANGEMASK) { |
2509 | 88 | case EIGRP_TLV_GENERAL: |
2510 | 88 | dissect_eigrp_general_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), pinfo, tlv); |
2511 | 88 | break; |
2512 | | |
2513 | 32 | case EIGRP_TLV_IPv4: |
2514 | 32 | dissect_eigrp_ipv4_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), pinfo, tlv); |
2515 | 32 | break; |
2516 | | |
2517 | 7 | case EIGRP_TLV_ATALK: |
2518 | 7 | dissect_eigrp_atalk_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), tlv); |
2519 | 7 | break; |
2520 | | |
2521 | 5 | case EIGRP_TLV_IPX: |
2522 | 5 | dissect_eigrp_ipx_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), pinfo, tlv); |
2523 | 5 | break; |
2524 | | |
2525 | 34 | case EIGRP_TLV_IPv6: |
2526 | 34 | dissect_eigrp_ipv6_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), pinfo, tlv); |
2527 | 34 | break; |
2528 | | |
2529 | 98 | case EIGRP_TLV_MP: |
2530 | 98 | dissect_eigrp_multi_protocol_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), |
2531 | 98 | pinfo, tlv); |
2532 | 98 | break; |
2533 | | |
2534 | 7 | case EIGRP_TLV_MTR: |
2535 | 7 | dissect_eigrp_multi_topology_tlv(ti, tlv_tree, tvb_new_subset_length(tvb, (offset + 4), (size - 4)), |
2536 | 7 | pinfo, tlv); |
2537 | 7 | break; |
2538 | | |
2539 | 47 | default: |
2540 | 47 | expert_add_info_format(pinfo, ti, &ei_eigrp_tlv_type, "Unknown TLV Group (0x%04x)", tlv); |
2541 | 319 | } |
2542 | | |
2543 | 236 | offset += size; |
2544 | 236 | } |
2545 | 178 | break; |
2546 | 280 | } |
2547 | | |
2548 | | /* Return the amount of data this dissector was able to dissect */ |
2549 | 183 | return tvb_captured_length(tvb); |
2550 | 280 | } |
2551 | | |
2552 | | static void |
2553 | | eigrp_fmt_cable_range(char *result, uint32_t revision ) |
2554 | 0 | { |
2555 | 0 | snprintf( result, ITEM_LABEL_LENGTH, "%u-%u", (uint16_t)(( revision & 0xFFFF0000 ) >> 16), (uint16_t)(revision & 0xFFFF) ); |
2556 | 0 | } |
2557 | | |
2558 | | static void |
2559 | | eigrp_fmt_nexthop_address(char *result, uint32_t revision ) |
2560 | 0 | { |
2561 | 0 | snprintf( result, ITEM_LABEL_LENGTH, "%u.%u", (uint16_t)(( revision & 0xFFFF0000 ) >> 16), (uint16_t)(revision & 0xFFFF) ); |
2562 | 0 | } |
2563 | | |
2564 | | static void |
2565 | | eigrp_fmt_version(char *result, uint32_t revision ) |
2566 | 0 | { |
2567 | 0 | snprintf( result, ITEM_LABEL_LENGTH, "%d.%02d", (uint8_t)(( revision & 0xFF00 ) >> 8), (uint8_t)(revision & 0xFF) ); |
2568 | 0 | } |
2569 | | |
2570 | | /** |
2571 | | *@fn void proto_register_eigrp (void) |
2572 | | * |
2573 | | * @usage |
2574 | | * you can not have the function name inside a comment or else Wireshark |
2575 | | * will fail with "duplicate protocol" error. Don't you hate it when tools |
2576 | | * try to be to smart :( |
2577 | | * |
2578 | | * @par |
2579 | | * Register the protocol with Wireshark |
2580 | | * this format is require because a script is used to build the C function |
2581 | | * that calls all the protocol registration. |
2582 | | */ |
2583 | | void |
2584 | | proto_register_eigrp(void) |
2585 | 15 | { |
2586 | | /* Setup list of header fields See Section 1.6.1 for details |
2587 | | */ |
2588 | 15 | static hf_register_info hf[] = { |
2589 | | /* |
2590 | | * |
2591 | | * EIGRP Packet Header definitions |
2592 | | * |
2593 | | * 0 1 2 3 |
2594 | | * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
2595 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2596 | | * |Ver | Opcode | Checksum | |
2597 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2598 | | * | Flags | |
2599 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2600 | | * | Sequence number | |
2601 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2602 | | * | Acknowledgement number | |
2603 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2604 | | * | Virtual Router ID | Autonomous system number | |
2605 | | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
2606 | | */ |
2607 | 15 | { &hf_eigrp_version, |
2608 | 15 | { "Version", "eigrp.version", |
2609 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
2610 | 15 | "Version - Version of EIGRP packet format", HFILL } |
2611 | 15 | }, |
2612 | 15 | { &hf_eigrp_opcode, |
2613 | 15 | { "Opcode", "eigrp.opcode", |
2614 | 15 | FT_UINT8, BASE_DEC, VALS(eigrp_opcode2string), 0x0, |
2615 | 15 | "Opcode - Operation code indicating the message type", HFILL } |
2616 | 15 | }, |
2617 | 15 | { &hf_eigrp_flags, |
2618 | 15 | { "Flags", "eigrp.flags", |
2619 | 15 | FT_UINT32, BASE_HEX, NULL, 0x0, |
2620 | 15 | "Flag - Initialization bit and is used in establishing " |
2621 | 15 | "a new neighbor relationship", HFILL } |
2622 | 15 | }, |
2623 | 15 | { &hf_eigrp_sequence, |
2624 | 15 | { "Sequence", "eigrp.seq", |
2625 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2626 | 15 | "Sequence number -- used to send messages reliably", HFILL } |
2627 | 15 | }, |
2628 | 15 | { &hf_eigrp_acknowledge, |
2629 | 15 | { "Acknowledge", "eigrp.ack", |
2630 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2631 | 15 | "Acknowledge number -- used to send messages reliably", HFILL } |
2632 | 15 | }, |
2633 | 15 | { &hf_eigrp_vrid, |
2634 | 15 | { "Virtual Router ID", "eigrp.vrid", |
2635 | 15 | FT_UINT16, BASE_DEC, NULL, 0, |
2636 | 15 | "Virtual Router ID - For each Virtual Router, there is a separate topology " |
2637 | 15 | "table and routing/service table; even for matching AS. " |
2638 | 15 | "This field allows the gateway to select which set router to use.", HFILL } |
2639 | 15 | }, |
2640 | 15 | { &hf_eigrp_as, |
2641 | 15 | { "Autonomous System", "eigrp.as", |
2642 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
2643 | 15 | "Autonomous system number - Each AS has a separate topology table " |
2644 | 15 | "which for a give routing/service table. A gateway can participate " |
2645 | 15 | "in more than one AS. This field allows the gateway to" |
2646 | 15 | "select which set of topology tables to use.", HFILL } |
2647 | 15 | }, |
2648 | | |
2649 | | /* |
2650 | | * Define eigrp_flags bits here |
2651 | | * |
2652 | | * Init bit definition. First unicast transmitted Update has this |
2653 | | * bit set in the flags field of the fixed header. It tells the neighbor |
2654 | | * to send its full topology table. |
2655 | | */ |
2656 | 15 | { &hf_eigrp_flags_init, |
2657 | 15 | { "Init", "eigrp.flags.init", |
2658 | 15 | FT_BOOLEAN, 32, TFS(&tfs_set_notset), EIGRP_INIT_FLAG, |
2659 | 15 | "Init - tells the neighbor to send its full topology table", HFILL } |
2660 | 15 | }, |
2661 | | |
2662 | | /* |
2663 | | * Conditionally Received - Any packet with the CR-bit set can |
2664 | | * be accepted by an EIGRP speaker if and only if a previous Hello was |
2665 | | * received with the SEQUENCE_TYPE TLV present. |
2666 | | * This allows multicasts to be transmitted in order and reliably at the |
2667 | | * same time as unicasts are transmitted. |
2668 | | */ |
2669 | 15 | { &hf_eigrp_flags_condrecv, |
2670 | 15 | { "Conditional Receive", "eigrp.flags.condrecv", |
2671 | 15 | FT_BOOLEAN, 32, TFS(&tfs_set_notset), EIGRP_CR_FLAG, |
2672 | 15 | "Conditionally Received the next packet if address was in listed " |
2673 | 15 | "in the previous HELLO", HFILL } |
2674 | 15 | }, |
2675 | | |
2676 | | /* |
2677 | | * Restart flag is set in the hello and the init update |
2678 | | * packets during the nsf signaling period. A nsf-aware |
2679 | | * router looks at the RS flag to detect if a peer is restarting |
2680 | | * and maintain the adjacency. A restarting router looks at |
2681 | | * this flag to determine if the peer is helping out with the restart. |
2682 | | */ |
2683 | 15 | { &hf_eigrp_flags_restart, |
2684 | 15 | { "Restart", "eigrp.flags.restart", |
2685 | 15 | FT_BOOLEAN, 32, TFS(&tfs_set_notset), EIGRP_RS_FLAG, |
2686 | 15 | "Restart flag - Set in the HELLO and the initial " |
2687 | 15 | "UPDATE packets during the nsf signaling period.", HFILL }, |
2688 | 15 | }, |
2689 | | |
2690 | | /* |
2691 | | * EOT bit. The End-of-Table flag marks the end of the start-up updates |
2692 | | * sent to a new peer. A nsf restarting router looks at this flag to |
2693 | | * determine if it has finished receiving the start-up updates from all |
2694 | | * peers. A nsf-aware router waits for this flag before cleaning up |
2695 | | * the stale routes from the restarting peer. |
2696 | | */ |
2697 | 15 | { &hf_eigrp_flags_eot, |
2698 | 15 | { "End Of Table", "eigrp.flags.eot", |
2699 | 15 | FT_BOOLEAN, 32, TFS(&tfs_set_notset), EIGRP_EOT_FLAG, |
2700 | 15 | "End-of-Table - Marks the end of the start-up UPDATES indicating the " |
2701 | 15 | "complete topology database has been sent to a new peer", HFILL } |
2702 | 15 | }, |
2703 | | |
2704 | | /** |
2705 | | * TLV type definitions. Generic (protocol-independent) TLV types are |
2706 | | * defined here. Protocol-specific ones are defined later |
2707 | | * |
2708 | | * +-----+------------------+ |
2709 | | * | | | | |
2710 | | * | Type| Len | Vector | |
2711 | | * | | | | |
2712 | | * +-----+------------------+ |
2713 | | * |
2714 | | * TLV type definitions. Generic (protocol-independent) TLV types are |
2715 | | * defined here. Protocol-specific ones are defined elsewhere. |
2716 | | * |
2717 | | * EIGRP_PARAMETER 0x0001 parameter |
2718 | | * EIGRP_AUTH 0x0002 authentication |
2719 | | * EIGRP_SEQUENCE 0x0003 sequenced packet |
2720 | | * EIGRP_SW_VERSION 0x0004 software version |
2721 | | * EIGRP_NEXT_MCAST_SEQ 0x0005 multicast sequence |
2722 | | * EIGRP_PEER_STUBINFO 0x0006 stub information |
2723 | | * EIGRP_PEER_TERMINATION 0x0007 peer termination |
2724 | | */ |
2725 | 15 | { &hf_eigrp_tlv_type, |
2726 | 15 | { "Type", "eigrp.tlv_type", |
2727 | 15 | FT_UINT16, BASE_HEX, VALS(eigrp_tlv2string), 0x0, |
2728 | 15 | "TLV Type", HFILL } |
2729 | 15 | }, |
2730 | 15 | { &hf_eigrp_tlv_len, |
2731 | 15 | { "Length", "eigrp.tlv.len", |
2732 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
2733 | 15 | "TLV Length", HFILL } |
2734 | 15 | }, |
2735 | | |
2736 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2737 | | * Parameters TLV |
2738 | | */ |
2739 | 15 | { &hf_eigrp_par_k1, { "K1", "eigrp.par.k1", FT_UINT8, BASE_DEC, NULL, 0x0, |
2740 | 15 | "Bandwidth/Throughput Coefficient", HFILL }}, |
2741 | 15 | { &hf_eigrp_par_k2, { "K2", "eigrp.par.k2", FT_UINT8, BASE_DEC, NULL, 0x0, |
2742 | 15 | "Load Coefficient", HFILL }}, |
2743 | 15 | { &hf_eigrp_par_k3, { "K3", "eigrp.par.k3", FT_UINT8, BASE_DEC, NULL, 0x0, |
2744 | 15 | "Delay/Latency Coefficient", HFILL }}, |
2745 | 15 | { &hf_eigrp_par_k4, { "K4", "eigrp.par.k4", FT_UINT8, BASE_DEC, NULL, 0x0, |
2746 | 15 | "Reliability Coefficient", HFILL }}, |
2747 | 15 | { &hf_eigrp_par_k5, { "K5", "eigrp.par.k5", FT_UINT8, BASE_DEC, NULL, 0x0, |
2748 | 15 | "Reliability Coefficient", HFILL }}, |
2749 | 15 | { &hf_eigrp_par_k6, { "K6", "eigrp.par.k6", FT_UINT8, BASE_DEC, NULL, 0x0, |
2750 | 15 | "Extended Metric Coefficient", HFILL }}, |
2751 | 15 | { &hf_eigrp_par_holdtime, |
2752 | 15 | { "Hold Time", "eigrp.par.holdtime", FT_UINT16, BASE_DEC, NULL, 0x0, |
2753 | 15 | "How long to ignore lost HELLO's", HFILL } |
2754 | 15 | }, |
2755 | | |
2756 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2757 | | * Authentication TLV |
2758 | | */ |
2759 | 15 | { &hf_eigrp_auth_type, |
2760 | 15 | { "Type", "eigrp.auth.type", |
2761 | 15 | FT_UINT16, BASE_DEC, VALS(eigrp_auth2string), 0x0, |
2762 | 15 | NULL, HFILL } |
2763 | 15 | }, |
2764 | 15 | { &hf_eigrp_auth_len, |
2765 | 15 | { "Length", "eigrp.auth.length", |
2766 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
2767 | 15 | NULL, HFILL } |
2768 | 15 | }, |
2769 | 15 | { &hf_eigrp_auth_keyid, |
2770 | 15 | { "Key ID", "eigrp.auth.keyid", |
2771 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2772 | 15 | NULL, HFILL } |
2773 | 15 | }, |
2774 | 15 | { &hf_eigrp_auth_keyseq, |
2775 | 15 | { "Key Sequence", "eigrp.auth.keyseq", |
2776 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2777 | 15 | NULL, HFILL } |
2778 | 15 | }, |
2779 | 15 | { &hf_eigrp_auth_digest, |
2780 | 15 | { "Digest", "eigrp.auth.digest", |
2781 | 15 | FT_BYTES, BASE_NONE, NULL, 0x0, |
2782 | 15 | NULL, HFILL } |
2783 | 15 | }, |
2784 | | |
2785 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2786 | | * Sequence TLV |
2787 | | */ |
2788 | 15 | { &hf_eigrp_seq_addrlen, |
2789 | 15 | { "Address length", "eigrp.seq.addrlen", |
2790 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
2791 | 15 | NULL, HFILL } |
2792 | 15 | }, |
2793 | 15 | { &hf_eigrp_seq_ipv4addr, |
2794 | 15 | { "IP Address", "eigrp.seq.ipv4addr", |
2795 | 15 | FT_IPv4, BASE_NONE, NULL, 0x0, |
2796 | 15 | NULL, HFILL } |
2797 | 15 | }, |
2798 | 15 | { &hf_eigrp_seq_ipv6addr, |
2799 | 15 | { "IPv6 Address", "eigrp.seq.ipv6addr", |
2800 | 15 | FT_IPv6, BASE_NONE, NULL, 0x0, |
2801 | 15 | NULL, HFILL } |
2802 | 15 | }, |
2803 | | |
2804 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2805 | | * Next Multicast Sequence |
2806 | | */ |
2807 | | /* |
2808 | | * This was added to the hello containing the sequence TLV so that the |
2809 | | * hello packet could be more tightly bound to the multicast packet bearing |
2810 | | * the CR bit that follows it. The sequence number of the impending multicast |
2811 | | * is carried herein. |
2812 | | */ |
2813 | 15 | { &hf_eigrp_next_mcast_seq, |
2814 | 15 | { "Multicast Sequence", "eigrp.next_mcast_seq", |
2815 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2816 | 15 | NULL, HFILL } |
2817 | 15 | }, |
2818 | | |
2819 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2820 | | * Peer Stub Information TLV |
2821 | | */ |
2822 | 15 | { &hf_eigrp_stub_flags, |
2823 | 15 | { "Stub Options", "eigrp.stub_options", |
2824 | 15 | FT_UINT16, BASE_HEX, NULL, 0x0, |
2825 | 15 | NULL, HFILL } |
2826 | 15 | }, |
2827 | | |
2828 | | /* |
2829 | | * Define eigrp_stub_flags bits here |
2830 | | */ |
2831 | 15 | { &hf_eigrp_stub_flags_connected, |
2832 | 15 | { "Connected", "eigrp.stub_options.connected", |
2833 | 15 | FT_BOOLEAN, 16, TFS(&tfs_set_notset), EIGRP_PEER_ALLOWS_CONNECTED, |
2834 | 15 | NULL, HFILL } |
2835 | 15 | }, |
2836 | 15 | { &hf_eigrp_stub_flags_static, |
2837 | 15 | { "Static", "eigrp.stub_options.static", |
2838 | 15 | FT_BOOLEAN, 16, TFS(&tfs_set_notset), EIGRP_PEER_ALLOWS_STATIC, |
2839 | 15 | NULL, HFILL } |
2840 | 15 | }, |
2841 | 15 | { &hf_eigrp_stub_flags_summary, |
2842 | 15 | { "Summary", "eigrp.stub_options.summary", |
2843 | 15 | FT_BOOLEAN, 16, TFS(&tfs_set_notset), EIGRP_PEER_ALLOWS_SUMMARY, |
2844 | 15 | NULL, HFILL } |
2845 | 15 | }, |
2846 | 15 | { &hf_eigrp_stub_flags_redist, |
2847 | 15 | { "Redistributed", "eigrp.stub_options.redist", |
2848 | 15 | FT_BOOLEAN, 16, TFS(&tfs_set_notset), EIGRP_PEER_ALLOWS_REDIST, |
2849 | 15 | NULL, HFILL } |
2850 | 15 | }, |
2851 | 15 | { &hf_eigrp_stub_flags_leakmap, |
2852 | 15 | { "Leak-Map", "eigrp.stub_options.leakmap", |
2853 | 15 | FT_BOOLEAN, 16, TFS(&tfs_set_notset), EIGRP_PEER_ALLOWS_LEAKING, |
2854 | 15 | NULL, HFILL } |
2855 | 15 | }, |
2856 | 15 | { &hf_eigrp_stub_flags_recvonly, |
2857 | 15 | { "Receive-Only", "eigrp.stub_options.recvonly", |
2858 | 15 | FT_BOOLEAN, 16, TFS(&tfs_set_notset), EIGRP_PEER_ALLOWS_RCVONLY, |
2859 | 15 | NULL, HFILL } |
2860 | 15 | }, |
2861 | | |
2862 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2863 | | * Peer Termination TLV |
2864 | | */ |
2865 | | /* Place holder - this TLV has no options */ |
2866 | | |
2867 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2868 | | * EIGRP 3.0 Vector Header (deprecated) |
2869 | | */ |
2870 | | /* |
2871 | | * common header for all version 3 tlvs |
2872 | | */ |
2873 | 15 | { &hf_eigrp_tid, |
2874 | 15 | { "Topology", "eigrp.tid", |
2875 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
2876 | 15 | NULL, HFILL } |
2877 | 15 | }, |
2878 | 15 | { &hf_eigrp_afi, |
2879 | 15 | { "AFI", "eigrp.afi", |
2880 | 15 | FT_UINT16, BASE_DEC, VALS(eigrp_afi2string), 0x0, |
2881 | 15 | NULL, HFILL } |
2882 | 15 | }, |
2883 | | |
2884 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2885 | | * EIGRP TLV 1.2 (legacy) and TLV 3.0 Metric (deprecated) definition |
2886 | | */ |
2887 | 15 | { &hf_eigrp_legacy_metric_delay, |
2888 | 15 | { "Scaled Delay", "eigrp.old_metric.delay", |
2889 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2890 | 15 | "delay, in 39.1 nanosec interments", HFILL } |
2891 | 15 | }, |
2892 | 15 | { &hf_eigrp_legacy_metric_bw, |
2893 | 15 | { "Scaled BW", "eigrp.old_metric.bw", |
2894 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2895 | 15 | "bandwidth, in units of 1 Kbit/sec", HFILL } |
2896 | 15 | }, |
2897 | 15 | { &hf_eigrp_legacy_metric_mtu, |
2898 | 15 | { "MTU", "eigrp.old_metric.mtu", |
2899 | 15 | FT_UINT24, BASE_DEC, NULL, 0x0, |
2900 | 15 | "MTU, in octets", HFILL } |
2901 | 15 | }, |
2902 | 15 | { &hf_eigrp_legacy_metric_hopcount, |
2903 | 15 | { "Hop Count", "eigrp.old_metric.hopcount", |
2904 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
2905 | 15 | "Number of hops to destination", HFILL } |
2906 | 15 | }, |
2907 | 15 | { &hf_eigrp_legacy_metric_rel, |
2908 | 15 | { "Reliability", "eigrp.old_metric.rel", |
2909 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
2910 | 15 | "percent packets successfully tx/rx", HFILL } |
2911 | 15 | }, |
2912 | 15 | { &hf_eigrp_legacy_metric_load, |
2913 | 15 | { "Load", "eigrp.old_metric.load", |
2914 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
2915 | 15 | "percent of channel occupied", HFILL } |
2916 | 15 | }, |
2917 | 15 | { &hf_eigrp_legacy_metric_intag, |
2918 | 15 | { "Route Tag", "eigrp.old_metric.intag", |
2919 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
2920 | 15 | "Internal Route Tag", HFILL } |
2921 | 15 | }, |
2922 | | |
2923 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2924 | | * EIGRP 3.0 TIDLIST TLV (only survivor in MTR) |
2925 | | */ |
2926 | 15 | { &hf_eigrp_tidlist_tid, |
2927 | 15 | { "TID List", "eigrp.tidlist", |
2928 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
2929 | 15 | NULL, HFILL } |
2930 | 15 | }, |
2931 | 15 | { &hf_eigrp_tidlist_flags, |
2932 | 15 | { "TID List Flags", "eigrp.tidlist.flags", |
2933 | 15 | FT_UINT16, BASE_HEX, NULL, 0x0, |
2934 | 15 | NULL, HFILL } |
2935 | 15 | }, |
2936 | 15 | { &hf_eigrp_tidlist_len, |
2937 | 15 | { "TID List Size", "eigrp.tidlist.len", |
2938 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
2939 | 15 | NULL, HFILL } |
2940 | 15 | }, |
2941 | 15 | { &hf_eigrp_routerid, |
2942 | 15 | { "RouterID", "eigrp.routerid", |
2943 | 15 | FT_IPv4, BASE_NONE, NULL, 0x0, |
2944 | 15 | "Router ID of injecting router", HFILL } |
2945 | 15 | }, |
2946 | 15 | { &hf_eigrp_legacy_metric_tag, |
2947 | 15 | { "Tag", "eigrp.old_metric.tag", |
2948 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2949 | 15 | "route tag", HFILL } |
2950 | 15 | }, |
2951 | | |
2952 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2953 | | * |
2954 | | * PDM opaque flag field definitions |
2955 | | */ |
2956 | 15 | { &hf_eigrp_metric_flags_srcwd, |
2957 | 15 | { "Source Withdraw", "eigrp.metric.flags.srcwd", |
2958 | 15 | FT_BOOLEAN, 8, NULL, EIGRP_OPAQUE_SRCWD, |
2959 | 15 | "Route Source Withdraw", HFILL } |
2960 | 15 | }, |
2961 | 15 | { &hf_eigrp_metric_flags_cd, |
2962 | 15 | { "Candidate Default", "eigrp.metric.flags.cd", |
2963 | 15 | FT_BOOLEAN, 8, NULL, EIGRP_OPAQUE_CD, |
2964 | 15 | NULL, HFILL } |
2965 | 15 | }, |
2966 | 15 | { &hf_eigrp_metric_flags_active, |
2967 | 15 | { "Route is Active", "eigrp.metric.flags.active", |
2968 | 15 | FT_BOOLEAN, 8, NULL, EIGRP_OPAQUE_ACTIVE, |
2969 | 15 | "Route is currently in active state", HFILL } |
2970 | 15 | }, |
2971 | 15 | { &hf_eigrp_metric_flags_repl, |
2972 | 15 | { "Route is Replicated", "eigrp.metric.flags.repl", |
2973 | 15 | FT_BOOLEAN, 8, NULL, EIGRP_OPAQUE_REPL, |
2974 | 15 | "Route is replicated from different tableid", HFILL } |
2975 | 15 | }, |
2976 | | |
2977 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2978 | | * EIGRP TLV 1.2/3.0 ExtData Definitions |
2979 | | */ |
2980 | 15 | { &hf_eigrp_extdata_origrid, |
2981 | 15 | { "Originating RouterID", "eigrp.extdata.origrid", |
2982 | 15 | FT_IPv4, BASE_NONE, NULL, 0x0, |
2983 | 15 | "Router ID of redistributing router", HFILL } |
2984 | 15 | }, |
2985 | | |
2986 | 15 | { &hf_eigrp_extdata_as, |
2987 | 15 | { "Originating A.S.", "eigrp.extdata.as", |
2988 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2989 | 15 | "Autonomous System of redistributing protocol", HFILL } |
2990 | 15 | }, |
2991 | | |
2992 | 15 | { &hf_eigrp_extdata_tag, |
2993 | 15 | { "Administrative Tag", "eigrp.extdata.tag", |
2994 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
2995 | 15 | "Administrative Route Tag", HFILL } |
2996 | 15 | }, |
2997 | 15 | { &hf_eigrp_extdata_metric, |
2998 | 15 | { "External Metric", "eigrp.extdata.metric", |
2999 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3000 | 15 | "Metric reported by redistributing protocol", HFILL } |
3001 | 15 | }, |
3002 | 15 | { &hf_eigrp_extdata_reserved, |
3003 | 15 | { "Reserved", "eigrp.extdata.reserved", |
3004 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3005 | 15 | NULL, HFILL } |
3006 | 15 | }, |
3007 | | |
3008 | | /* IPX ExtData Definitions */ |
3009 | 15 | { &hf_eigrp_ipx_extdata_delay, |
3010 | 15 | { "External Delay", "eigrp.extdata.ipx_delay", |
3011 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3012 | 15 | "Delay reported by redistributing protocol", HFILL } |
3013 | 15 | }, |
3014 | 15 | { &hf_eigrp_ipx_extdata_metric, |
3015 | 15 | { "External Metric", "eigrp.extdata.ipx_metric", |
3016 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3017 | 15 | "Delay reported by redistributing protocol", HFILL } |
3018 | 15 | }, |
3019 | | |
3020 | 15 | { &hf_eigrp_extdata_proto, |
3021 | 15 | { "External Protocol ID", "eigrp.extdata.proto", |
3022 | 15 | FT_UINT8, BASE_DEC, VALS(eigrp_proto2string), 0x0, |
3023 | 15 | NULL, HFILL } |
3024 | 15 | }, |
3025 | | |
3026 | 15 | { &hf_eigrp_extdata_flag_ext, |
3027 | 15 | { "Route is External", "eigrp.opaque.flag.ext", |
3028 | 15 | FT_BOOLEAN, 8, NULL, EIGRP_OPAQUE_EXT, |
3029 | 15 | NULL, HFILL } |
3030 | 15 | }, |
3031 | 15 | { &hf_eigrp_extdata_flag_cd, |
3032 | 15 | { "Route is Candidate Default", "eigrp.opaque.flag.cd", |
3033 | 15 | FT_BOOLEAN, 8, NULL, EIGRP_OPAQUE_CD, |
3034 | 15 | NULL, HFILL } |
3035 | 15 | }, |
3036 | | |
3037 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3038 | | * EIGRP TLV 2.0 "Wide" Metric format definition |
3039 | | */ |
3040 | | /* Number of 16bit words in the metric section, used to determine the |
3041 | | * start of the destination/attribute information. |
3042 | | */ |
3043 | 15 | { &hf_eigrp_metric_offset, |
3044 | 15 | { "Offset", "eigrp.metric.offset", |
3045 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3046 | 15 | "Number of 16bit words to reach the start of the" |
3047 | 15 | "destination/attribute information", HFILL } |
3048 | 15 | }, |
3049 | | |
3050 | | /* Priority of the prefix when transmitting a group of destination |
3051 | | * addresses to neighboring routers. A priority of zero indicates no |
3052 | | * priority is set. |
3053 | | */ |
3054 | 15 | { &hf_eigrp_metric_priority, |
3055 | 15 | { "Priority", "eigrp.metric.priority", |
3056 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3057 | 15 | "Priority of the prefix for ordering transmission", HFILL } |
3058 | 15 | }, |
3059 | | |
3060 | | /** The current error rate for the path. Measured as an error |
3061 | | * percentage. A value of 255 indicates 100% reliability |
3062 | | */ |
3063 | 15 | { &hf_eigrp_metric_rel, |
3064 | 15 | { "Reliability", "eigrp.metric.reliability", |
3065 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3066 | 15 | "percent packets successfully tx/rx", HFILL } |
3067 | 15 | }, |
3068 | | |
3069 | | /** The load utilization of the path to the destination. Measured as a |
3070 | | * percentage of load. A value of 255 indicates 100% load. |
3071 | | */ |
3072 | 15 | { &hf_eigrp_metric_load, |
3073 | 15 | { "Load", "eigrp.metric.load", |
3074 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3075 | 15 | "percent of channel occupied", HFILL } |
3076 | 15 | }, |
3077 | | |
3078 | | /** The minimum maximum transmission unit size for the path to the |
3079 | | * destination. Not used in metric calculation, but available to |
3080 | | * underlying protocols |
3081 | | */ |
3082 | 15 | { &hf_eigrp_metric_mtu, |
3083 | 15 | { "MTU", "eigrp.metric.mtu", |
3084 | 15 | FT_UINT24, BASE_DEC, NULL, 0x0, |
3085 | 15 | "MTU, in octets", HFILL } |
3086 | 15 | }, |
3087 | | |
3088 | | /** number of router traversals to the destination */ |
3089 | 15 | { &hf_eigrp_metric_hopcount, |
3090 | 15 | { "Hop Count", "eigrp.metric.hopcount", |
3091 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3092 | 15 | "Number of hops to destination", HFILL } |
3093 | 15 | }, |
3094 | | |
3095 | | /* Reserved - Transmitted as 0x0000 */ |
3096 | 15 | { &hf_eigrp_metric_reserved, |
3097 | 15 | { "Reserved", "eigrp.metric.reserved", |
3098 | 15 | FT_UINT16, BASE_HEX, NULL, 0x0, |
3099 | 15 | NULL, HFILL } |
3100 | 15 | }, |
3101 | | |
3102 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3103 | | * EIGRP TLV 2.0 Extended Metric Attributes |
3104 | | */ |
3105 | 15 | { &hf_eigrp_attr_opcode, |
3106 | 15 | { "Opcode", "eigrp.attr.opcode", |
3107 | 15 | FT_UINT8, BASE_DEC, VALS(eigrp_attr_opcode2string), 0x0, |
3108 | 15 | "Opcode - Operation code indicating the attribute type", HFILL } |
3109 | 15 | }, |
3110 | 15 | { &hf_eigrp_attr_offset, |
3111 | 15 | { "Offset", "eigrp.attr.offset", |
3112 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3113 | 15 | "Number of 2 byte words of data", HFILL } |
3114 | 15 | }, |
3115 | 15 | { &hf_eigrp_attr_scaled, |
3116 | 15 | { "Legacy Metric", "eigrp.attr.scaled", |
3117 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3118 | 15 | "Metric calculated from legacy TLVs", HFILL } |
3119 | 15 | }, |
3120 | 15 | { &hf_eigrp_attr_tag, |
3121 | 15 | { "Tag", "eigrp.attr.tag", |
3122 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3123 | 15 | "Tag assigned by admin for dest", HFILL } |
3124 | 15 | }, |
3125 | 15 | { &hf_eigrp_attr_jitter, |
3126 | 15 | { "Jitter", "eigrp.attr.jitter", |
3127 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3128 | 15 | "Variation in path delay", HFILL } |
3129 | 15 | }, |
3130 | 15 | { &hf_eigrp_attr_qenergy, |
3131 | 15 | { "Q-Energy", "eigrp.attr.qenergy", |
3132 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3133 | 15 | "Non-Active energy usage along path", HFILL } |
3134 | 15 | }, |
3135 | 15 | { &hf_eigrp_attr_energy, |
3136 | 15 | { "Energy", "eigrp.attr.energy", |
3137 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3138 | 15 | "Active energy usage along path", HFILL } |
3139 | 15 | }, |
3140 | | |
3141 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3142 | | * |
3143 | | * IPv4 specific address definitions |
3144 | | */ |
3145 | 15 | { &hf_eigrp_ipv4_nexthop, |
3146 | 15 | { "NextHop", "eigrp.ipv4.nexthop", |
3147 | 15 | FT_IPv4, BASE_NONE, NULL, 0x0, |
3148 | 15 | NULL, HFILL } |
3149 | 15 | }, |
3150 | 15 | { &hf_eigrp_ipv4_prefixlen, |
3151 | 15 | { "Prefix Length", "eigrp.ipv4.prefixlen", |
3152 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3153 | 15 | NULL, HFILL } |
3154 | 15 | }, |
3155 | | |
3156 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3157 | | * |
3158 | | * IPv6 specific address definitions |
3159 | | */ |
3160 | 15 | { &hf_eigrp_ipv6_nexthop, |
3161 | 15 | { "NextHop", "eigrp.ipv6.nexthop", |
3162 | 15 | FT_IPv6, BASE_NONE, NULL, 0x0, |
3163 | 15 | NULL, HFILL } |
3164 | 15 | }, |
3165 | | |
3166 | 15 | { &hf_eigrp_ipv6_prefixlen, |
3167 | 15 | { "Prefix Length", "eigrp.ipv6.prefixlen", |
3168 | 15 | FT_UINT8, BASE_DEC, NULL, 0x0, |
3169 | 15 | NULL, HFILL } |
3170 | 15 | }, |
3171 | | |
3172 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3173 | | * |
3174 | | * IPX specific address definitions |
3175 | | */ |
3176 | 15 | { &hf_eigrp_ipx_nexthop_net, |
3177 | 15 | { "NextHop Net", "eigrp.ipx.nexthop_net", |
3178 | 15 | FT_IPXNET, BASE_NONE, NULL, 0x0, |
3179 | 15 | NULL, HFILL } |
3180 | 15 | }, |
3181 | 15 | { &hf_eigrp_ipx_nexthop_host, |
3182 | 15 | { "NextHop Host", "eigrp.ipx.nexthop_host", |
3183 | 15 | FT_ETHER, BASE_NONE, NULL, 0x0, |
3184 | 15 | NULL, HFILL } |
3185 | 15 | }, |
3186 | 15 | { &hf_eigrp_ipx_extdata_routerid, |
3187 | 15 | { "External RouterID", "eigrp.ipx.routerid", |
3188 | 15 | FT_ETHER, BASE_NONE, NULL, 0x0, |
3189 | 15 | "Router ID of redistributing router", HFILL } |
3190 | 15 | }, |
3191 | 15 | { &hf_eigrp_ipx_dest, |
3192 | 15 | { "Destination", "eigrp.ipx.dest", |
3193 | 15 | FT_IPXNET, BASE_NONE, NULL, 0x0, |
3194 | 15 | NULL, HFILL } |
3195 | 15 | }, |
3196 | | |
3197 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3198 | | * |
3199 | | * AppleTalk specific address definitions |
3200 | | */ |
3201 | 15 | { &hf_eigrp_atalk_routerid, |
3202 | 15 | { "AppleTalk Router ID", "eigrp.atalk.routerid", |
3203 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3204 | 15 | NULL, HFILL } |
3205 | 15 | }, |
3206 | | |
3207 | | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
3208 | | * Service Advertisement Framework definitions |
3209 | | */ |
3210 | 15 | { &hf_eigrp_saf_service, |
3211 | 15 | { "Service", "eigrp.saf.service", |
3212 | 15 | FT_UINT16, BASE_DEC, VALS(eigrp_saf_srv2string), 0x0, |
3213 | 15 | NULL, HFILL } |
3214 | 15 | }, |
3215 | 15 | { &hf_eigrp_saf_subservice, |
3216 | 15 | { "Sub-Service", "eigrp.saf.subservice", |
3217 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3218 | 15 | NULL, HFILL } |
3219 | 15 | }, |
3220 | 15 | { &hf_eigrp_saf_guid, |
3221 | 15 | { "GUID", "eigrp.saf.guid", |
3222 | 15 | FT_GUID, BASE_NONE, NULL, 0x0, |
3223 | 15 | NULL, HFILL } |
3224 | 15 | }, |
3225 | 15 | { &hf_eigrp_saf_data_type, |
3226 | 15 | { "Type", "eigrp.saf.data.type", |
3227 | 15 | FT_UINT16, BASE_HEX, VALS(eigrp_saf_type2string), 0x0, |
3228 | 15 | "SAF Message Data Type", HFILL } |
3229 | 15 | }, |
3230 | 15 | { &hf_eigrp_saf_data_length, |
3231 | 15 | { "Length", "eigrp.saf.data.length", |
3232 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3233 | 15 | NULL, HFILL } |
3234 | 15 | }, |
3235 | 15 | { &hf_eigrp_saf_data_sequence, |
3236 | 15 | { "Sequence", "eigrp.saf.data.sequence", |
3237 | 15 | FT_UINT32, BASE_DEC, NULL, 0x0, |
3238 | 15 | NULL, HFILL } |
3239 | 15 | }, |
3240 | 15 | { &hf_eigrp_saf_reachability_afi, |
3241 | 15 | { "AFI", "eigrp.saf.data.reachability.afi", |
3242 | 15 | FT_UINT16, BASE_DEC, VALS(eigrp_afi2string), 0x0, |
3243 | 15 | NULL, HFILL } |
3244 | 15 | }, |
3245 | 15 | { &hf_eigrp_saf_reachability_port, |
3246 | 15 | { "Port", "eigrp.saf.data.reachability.port", |
3247 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3248 | 15 | NULL, HFILL } |
3249 | 15 | }, |
3250 | 15 | { &hf_eigrp_saf_reachability_protocol, |
3251 | 15 | { "Protocol", "eigrp.saf.data.reachability.protocol", |
3252 | 15 | FT_UINT16, BASE_DEC, NULL, 0x0, |
3253 | 15 | NULL, HFILL } |
3254 | 15 | }, |
3255 | 15 | { &hf_eigrp_saf_reachability_addr_ipv4, |
3256 | 15 | { "IPv4 Addr", "eigrp.saf.data.reachability.addr_ipv4", |
3257 | 15 | FT_IPv4, BASE_NONE, NULL, 0x0, |
3258 | 15 | NULL, HFILL } |
3259 | 15 | }, |
3260 | 15 | { &hf_eigrp_saf_reachability_addr_ipv6, |
3261 | 15 | { "IPv6 Addr", "eigrp.saf.data.reachability.addr_ipv6", |
3262 | 15 | FT_IPv6, BASE_NONE, NULL, 0x0, |
3263 | 15 | NULL, HFILL } |
3264 | 15 | }, |
3265 | 15 | { &hf_eigrp_saf_reachability_addr_hex, |
3266 | 15 | { "Addr", "eigrp.saf.data.reachability.addr_hex", |
3267 | 15 | FT_BYTES, BASE_NONE, NULL, 0x0, |
3268 | 15 | NULL, HFILL } |
3269 | 15 | }, |
3270 | | |
3271 | | /* misc field used in a couple places */ |
3272 | 15 | { &hf_eigrp_nullpad, |
3273 | 15 | { "Nullpad", "eigrp.nullpad", |
3274 | 15 | FT_BYTES, BASE_NONE, NULL, 0x0, |
3275 | 15 | NULL, HFILL } |
3276 | 15 | }, |
3277 | | |
3278 | | /* Generated from convert_proto_tree_add_text.pl */ |
3279 | 15 | { &hf_eigrp_ipx_address, { "IPX Address", "eigrp.ipx_address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, |
3280 | 15 | { &hf_eigrp_release, { "EIGRP Release", "eigrp.release_version", FT_UINT16, BASE_CUSTOM, CF_FUNC(eigrp_fmt_version), 0x0, NULL, HFILL }}, |
3281 | 15 | { &hf_eigrp_tlv_version, { "EIGRP TLV version", "eigrp.tlv_version", FT_UINT16, BASE_CUSTOM, CF_FUNC(eigrp_fmt_version), 0x0, NULL, HFILL }}, |
3282 | 15 | { &hf_eigrp_ipv4_destination, { "Destination", "eigrp.ipv4.destination", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }}, |
3283 | 15 | { &hf_eigrp_ipv6_destination, { "Destination", "eigrp.ipv6.destination", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }}, |
3284 | 15 | { &hf_eigrp_appletalk_cable_range, { "AppleTalk Cable Range", "eigrp.appletalk_cable_range", FT_UINT32, BASE_CUSTOM, CF_FUNC(eigrp_fmt_cable_range), 0x0, NULL, HFILL }}, |
3285 | 15 | { &hf_eigrp_nexthop_address, { "NextHop Address", "eigrp.nexthop_address", FT_UINT32, BASE_CUSTOM, CF_FUNC(eigrp_fmt_nexthop_address), 0x0, NULL, HFILL }}, |
3286 | 15 | { &hf_eigrp_cable_range, { "Cable range", "eigrp.cable_range", FT_UINT32, BASE_CUSTOM, CF_FUNC(eigrp_fmt_cable_range), 0x0, NULL, HFILL }}, |
3287 | 15 | { &hf_eigrp_metric_delay, { "Delay", "eigrp.metric.delay", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3288 | 15 | { &hf_eigrp_metric_bandwidth, { "Bandwidth", "eigrp.metric.bandwidth", FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3289 | 15 | { &hf_eigrp_checksum, { "Checksum", "eigrp.checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, |
3290 | 15 | { &hf_eigrp_checksum_status, { "Checksum Status", "eigrp.checksum.status", FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0, NULL, HFILL }}, |
3291 | 15 | { &hf_eigrp_metric_comm_type, { "Type", "eigrp.metric.comm_type", FT_UINT16, BASE_DEC, VALS(eigrp_metric_comm_type_vals), 0x0, NULL, HFILL }}, |
3292 | 15 | { &hf_eigrp_extcomm_eigrp_flag, { "FLAG", "eigrp.extcomm.flag", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, |
3293 | 15 | { &hf_eigrp_extcomm_eigrp_tag, { "TAG", "eigrp.extcomm.tag", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3294 | 15 | { &hf_eigrp_extcomm_eigrp_res, { "RES", "eigrp.extcomm.res", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, |
3295 | 15 | { &hf_eigrp_extcomm_eigrp_rid, { "RID", "eigrp.extcomm.rid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3296 | 15 | { &hf_eigrp_extcomm_eigrp_as, { "AS", "eigrp.extcomm.as", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3297 | 15 | { &hf_eigrp_extcomm_eigrp_sdly, { "SDLY", "eigrp.extcomm.sdly", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3298 | 15 | { &hf_eigrp_extcomm_eigrp_rel, { "RID", "eigrp.extcomm.rel", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3299 | 15 | { &hf_eigrp_extcomm_eigrp_hop, { "AS", "eigrp.extcomm.hop", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3300 | 15 | { &hf_eigrp_extcomm_eigrp_sbw, { "SDLY", "eigrp.extcomm.sbw", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3301 | 15 | { &hf_eigrp_extcomm_eigrp_load, { "LOAD", "eigrp.extcomm.load", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3302 | 15 | { &hf_eigrp_extcomm_eigrp_mtu, { "MTU", "eigrp.extcomm.mtu", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3303 | 15 | { &hf_eigrp_extcomm_eigrp_xas, { "xAS", "eigrp.extcomm.xas", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, |
3304 | 15 | { &hf_eigrp_extcomm_eigrp_xrid, { "xRID", "eigrp.extcomm.xrid", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3305 | 15 | { &hf_eigrp_extcomm_eigrp_xproto, { "xProto", "eigrp.extcomm.xproto", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, |
3306 | 15 | { &hf_eigrp_extcomm_eigrp_xmetric, { "xMETRIC", "eigrp.extcomm.xmetric", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }}, |
3307 | 15 | }; |
3308 | | |
3309 | | /* Setup protocol subtree array */ |
3310 | 15 | static int *ett[] = { |
3311 | | /* header flag */ |
3312 | 15 | &ett_eigrp, |
3313 | 15 | &ett_eigrp_flags, |
3314 | | |
3315 | | /* tlv specific */ |
3316 | 15 | &ett_eigrp_tlv, |
3317 | 15 | &ett_eigrp_tlv_metric, |
3318 | 15 | &ett_eigrp_tlv_attr, |
3319 | 15 | &ett_eigrp_tlv_extdata, |
3320 | | |
3321 | 15 | &ett_eigrp_tidlist, |
3322 | 15 | &ett_eigrp_stub_flags, |
3323 | 15 | &ett_eigrp_saf_reachability, |
3324 | | |
3325 | | /* metric tlv specific */ |
3326 | 15 | &ett_eigrp_metric_flags, |
3327 | 15 | &ett_eigrp_extdata_flags, |
3328 | | |
3329 | 15 | &ett_metric_comm_type |
3330 | 15 | }; |
3331 | | |
3332 | 15 | static ei_register_info ei[] = { |
3333 | 15 | { &ei_eigrp_peer_termination, { "eigrp.peer_termination", PI_RESPONSE_CODE, PI_NOTE, "Peer Termination", EXPFILL }}, |
3334 | 15 | { &ei_eigrp_auth_len, { "eigrp.auth.length.invalid", PI_MALFORMED, PI_WARN, "Invalid auth len", EXPFILL }}, |
3335 | 15 | { &ei_eigrp_auth_type, { "eigrp.auth.type.invalid", PI_PROTOCOL, PI_WARN, "Invalid auth type", EXPFILL }}, |
3336 | 15 | { &ei_eigrp_seq_addrlen, { "eigrp.seq.addrlen.invalid", PI_MALFORMED, PI_ERROR, "Invalid address length", EXPFILL }}, |
3337 | 15 | { &ei_eigrp_peer_termination_graceful, { "eigrp.peer_termination_graceful", PI_RESPONSE_CODE, PI_NOTE, "Peer Termination (Graceful Shutdown)", EXPFILL }}, |
3338 | 15 | { &ei_eigrp_prefixlen, { "eigrp.prefixlen.invalid", PI_MALFORMED, PI_WARN, "Invalid prefix length", EXPFILL }}, |
3339 | 15 | { &ei_eigrp_unreachable, { "eigrp.unreachable", PI_RESPONSE_CODE, PI_NOTE, "Unreachable", EXPFILL }}, |
3340 | 15 | { &ei_eigrp_tlv_type, { "eigrp.tlv_type.unknown", PI_PROTOCOL, PI_WARN, "Unknown TLV", EXPFILL }}, |
3341 | 15 | { &ei_eigrp_afi, { "eigrp.afi.unknown", PI_PROTOCOL, PI_WARN, "Unknown AFI", EXPFILL }}, |
3342 | 15 | { &ei_eigrp_checksum_bad, { "eigrp.checksum.bad", PI_CHECKSUM, PI_WARN, "Bad Checksum", EXPFILL }}, |
3343 | 15 | { &ei_eigrp_tlv_len, { "eigrp.tlv.len.invalid", PI_MALFORMED, PI_ERROR, "Corrupt TLV (Length field less than 4)", EXPFILL }}, |
3344 | 15 | { &ei_eigrp_tlv_trunc, { "eigrp.tlv.truncated", PI_MALFORMED, PI_ERROR, "Corrupt TLV (Truncated prematurely)", EXPFILL }}, |
3345 | 15 | }; |
3346 | | |
3347 | 15 | expert_module_t* expert_eigrp; |
3348 | | |
3349 | | /* Register the protocol name and description */ |
3350 | 15 | proto_eigrp = proto_register_protocol("Enhanced Interior Gateway Routing Protocol", "EIGRP", "eigrp"); |
3351 | 15 | register_dissector("eigrp", dissect_eigrp, proto_eigrp); |
3352 | | |
3353 | | /* Required function calls to register the header fields and subtrees used */ |
3354 | 15 | proto_register_field_array(proto_eigrp, hf, array_length(hf)); |
3355 | 15 | proto_register_subtree_array(ett, array_length(ett)); |
3356 | 15 | expert_eigrp = expert_register_protocol(proto_eigrp); |
3357 | 15 | expert_register_field_array(expert_eigrp, ei, array_length(ei)); |
3358 | 15 | } |
3359 | | |
3360 | | /** |
3361 | | *@fn void proto_reg_handoff_eigrp(void) |
3362 | | * |
3363 | | * @usage |
3364 | | * This exact format is required because a script is used to find these |
3365 | | * routines and create the code that calls these routines. |
3366 | | * |
3367 | | * @par |
3368 | | * If this dissector uses sub-dissector registration add a registration routine. |
3369 | | * |
3370 | | * This form of the reg_handoff function is used if you perform registration |
3371 | | * functions which are dependent upon prefs. If this function is registered as |
3372 | | * a prefs callback (see prefs_register_protocol above) this function is also |
3373 | | * called by preferences whenever "Apply" is pressed; |
3374 | | * |
3375 | | * In that case, it should accommodate being called more than once. |
3376 | | */ |
3377 | | void |
3378 | | proto_reg_handoff_eigrp(void) |
3379 | 15 | { |
3380 | 15 | dissector_handle_t eigrp_handle = find_dissector("eigrp"); |
3381 | | |
3382 | 15 | ipxsap_handle = find_dissector_add_dependency("ipxsap", proto_eigrp); |
3383 | 15 | media_type_table = find_dissector_table("media_type"); |
3384 | | |
3385 | 15 | dissector_add_uint("ip.proto", IP_PROTO_EIGRP, eigrp_handle); |
3386 | 15 | dissector_add_uint("ddp.type", DDP_EIGRP, eigrp_handle); |
3387 | 15 | dissector_add_uint("ipx.socket", IPX_SOCKET_EIGRP, eigrp_handle); |
3388 | 15 | } |
3389 | | |
3390 | | /* |
3391 | | * Editor modelines - https://www.wireshark.org/tools/modelines.html |
3392 | | * |
3393 | | * Local variables: |
3394 | | * c-basic-offset: 4 |
3395 | | * tab-width: 8 |
3396 | | * indent-tabs-mode: nil |
3397 | | * End: |
3398 | | * |
3399 | | * vi: set shiftwidth=4 tabstop=8 expandtab: |
3400 | | * :indentSize=4:tabSize=8:noTabs=true: |
3401 | | */ |