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NDOize some generic code
[tcpdump] / print-lspping.c
1 /*
2 * Redistribution and use in source and binary forms, with or without
3 * modification, are permitted provided that: (1) source code
4 * distributions retain the above copyright notice and this paragraph
5 * in its entirety, and (2) distributions including binary code include
6 * the above copyright notice and this paragraph in its entirety in
7 * the documentation or other materials provided with the distribution.
8 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
9 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
10 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
11 * FOR A PARTICULAR PURPOSE.
12 *
13 * Original code by Hannes Gredler (hannes@juniper.net)
14 */
15
16 #define NETDISSECT_REWORKED
17 #ifdef HAVE_CONFIG_H
18 #include "config.h"
19 #endif
20
21 #include <tcpdump-stdinc.h>
22
23 #include "interface.h"
24 #include "extract.h"
25 #include "addrtoname.h"
26
27 #include "l2vpn.h"
28 #include "oui.h"
29
30 /*
31 * LSPPING common header
32 *
33 * 0 1 2 3
34 * 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
35 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
36 * | Version Number | Must Be Zero |
37 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
38 * | Message Type | Reply mode | Return Code | Return Subcode|
39 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
40 * | Sender's Handle |
41 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
42 * | Sequence Number |
43 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
44 * | TimeStamp Sent (seconds) |
45 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
46 * | TimeStamp Sent (microseconds) |
47 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
48 * | TimeStamp Received (seconds) |
49 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
50 * | TimeStamp Received (microseconds) |
51 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
52 * | TLVs ... |
53 * . .
54 * . .
55 * . .
56 */
57
58 struct lspping_common_header {
59 u_int8_t version[2];
60 u_int8_t reserved[2];
61 u_int8_t msg_type;
62 u_int8_t reply_mode;
63 u_int8_t return_code;
64 u_int8_t return_subcode;
65 u_int8_t sender_handle[4];
66 u_int8_t seq_number[4];
67 u_int8_t ts_sent_sec[4];
68 u_int8_t ts_sent_usec[4];
69 u_int8_t ts_rcvd_sec[4];
70 u_int8_t ts_rcvd_usec[4];
71 };
72
73 #define LSPPING_VERSION 1
74
75 static const struct tok lspping_msg_type_values[] = {
76 { 1, "MPLS Echo Request"},
77 { 2, "MPLS Echo Reply"},
78 { 0, NULL}
79 };
80
81 static const struct tok lspping_reply_mode_values[] = {
82 { 1, "Do not reply"},
83 { 2, "Reply via an IPv4/IPv6 UDP packet"},
84 { 3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"},
85 { 4, "Reply via application level control channel"},
86 { 0, NULL}
87 };
88
89 static const struct tok lspping_return_code_values[] = {
90 { 0, "No return code or return code contained in the Error Code TLV"},
91 { 1, "Malformed echo request received"},
92 { 2, "One or more of the TLVs was not understood"},
93 { 3, "Replying router is an egress for the FEC at stack depth"},
94 { 4, "Replying router has no mapping for the FEC at stack depth"},
95 { 5, "Reserved"},
96 { 6, "Reserved"},
97 { 7, "Reserved"},
98 { 8, "Label switched at stack-depth"},
99 { 9, "Label switched but no MPLS forwarding at stack-depth"},
100 { 10, "Mapping for this FEC is not the given label at stack depth"},
101 { 11, "No label entry at stack-depth"},
102 { 12, "Protocol not associated with interface at FEC stack depth"},
103 };
104
105
106 /*
107 * LSPPING TLV header
108 * 0 1 2 3
109 * 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
110 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
111 * | Type | Length |
112 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
113 * | Value |
114 * . .
115 * . .
116 * . .
117 * | |
118 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
119 */
120
121 struct lspping_tlv_header {
122 u_int8_t type[2];
123 u_int8_t length[2];
124 };
125
126 #define LSPPING_TLV_TARGET_FEC_STACK 1
127 #define LSPPING_TLV_DOWNSTREAM_MAPPING 2
128 #define LSPPING_TLV_PAD 3
129 #define LSPPING_TLV_VENDOR_ENTERPRISE 5
130 #define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4
131 #define LSPPING_TLV_INTERFACE_LABEL_STACK 7
132 #define LSPPING_TLV_ERROR_CODE 9
133 #define LSPPING_TLV_REPLY_TOS_BYTE 10
134 #define LSPPING_TLV_BFD_DISCRIMINATOR 15 /* draft-ietf-bfd-mpls-02 */
135 #define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4
136 #define LSPPING_TLV_VENDOR_PRIVATE 0xfc00
137
138 static const struct tok lspping_tlv_values[] = {
139 { LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" },
140 { LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" },
141 { LSPPING_TLV_PAD, "Pad" },
142 { LSPPING_TLV_ERROR_CODE, "Error Code" },
143 { LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" },
144 { LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" },
145 { LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" },
146 { LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" },
147 { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" },
148 { 0, NULL}
149 };
150
151 #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1
152 #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2
153 #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3
154 #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4
155 #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6
156 #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7
157 #define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8
158 #define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID_OLD 9
159 #define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID 10
160 #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 11
161 #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 12
162
163 static const struct tok lspping_tlvtargetfec_subtlv_values[] = {
164 { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"},
165 { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6, "LDP IPv6 prefix"},
166 { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4, "RSVP IPv4 Session Query"},
167 { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6, "RSVP IPv6 Session Query"},
168 { 5, "Reserved"},
169 { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"},
170 { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"},
171 { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"},
172 { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID_OLD, "L2 circuit ID (old)"},
173 { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID, "L2 circuit ID"},
174 { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"},
175 { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"},
176 { 0, NULL}
177 };
178
179 /*
180 * 0 1 2 3
181 * 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
182 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
183 * | IPv4 prefix |
184 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
185 * | Prefix Length | Must Be Zero |
186 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
187 */
188 struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t {
189 u_int8_t prefix [4];
190 u_int8_t prefix_len;
191 };
192
193 /*
194 * 0 1 2 3
195 * 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
196 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
197 * | IPv6 prefix |
198 * | (16 octets) |
199 * | |
200 * | |
201 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
202 * | Prefix Length | Must Be Zero |
203 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
204 */
205 struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t {
206 u_int8_t prefix [16];
207 u_int8_t prefix_len;
208 };
209
210 /*
211 * 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
212 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
213 * | Sender identifier |
214 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
215 * | IPv4 prefix |
216 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
217 * | Prefix Length | Must Be Zero |
218 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
219 */
220 struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t {
221 u_int8_t sender_id [4];
222 u_int8_t prefix [4];
223 u_int8_t prefix_len;
224 };
225
226 /*
227 * 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
228 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
229 * | Sender identifier |
230 * | (16 octets) |
231 * | |
232 * | |
233 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
234 * | IPv6 prefix |
235 * | (16 octets) |
236 * | |
237 * | |
238 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
239 * | Prefix Length | Must Be Zero |
240 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
241 */
242 struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t {
243 u_int8_t sender_id [16];
244 u_int8_t prefix [16];
245 u_int8_t prefix_len;
246 };
247
248 /*
249 * 0 1 2 3
250 * 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
251 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
252 * | IPv4 tunnel end point address |
253 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
254 * | Must Be Zero | Tunnel ID |
255 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
256 * | Extended Tunnel ID |
257 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
258 * | IPv4 tunnel sender address |
259 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
260 * | Must Be Zero | LSP ID |
261 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
262 */
263 struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t {
264 u_int8_t tunnel_endpoint [4];
265 u_int8_t res[2];
266 u_int8_t tunnel_id[2];
267 u_int8_t extended_tunnel_id[4];
268 u_int8_t tunnel_sender [4];
269 u_int8_t res2[2];
270 u_int8_t lsp_id [2];
271 };
272
273 /*
274 * 0 1 2 3
275 * 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
276 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
277 * | IPv6 tunnel end point address |
278 * | |
279 * | |
280 * | |
281 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
282 * | Must Be Zero | Tunnel ID |
283 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
284 * | Extended Tunnel ID |
285 * | |
286 * | |
287 * | |
288 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
289 * | IPv6 tunnel sender address |
290 * | |
291 * | |
292 * | |
293 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
294 * | Must Be Zero | LSP ID |
295 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
296 */
297 struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t {
298 u_int8_t tunnel_endpoint [16];
299 u_int8_t res[2];
300 u_int8_t tunnel_id[2];
301 u_int8_t extended_tunnel_id[16];
302 u_int8_t tunnel_sender [16];
303 u_int8_t res2[2];
304 u_int8_t lsp_id [2];
305 };
306
307 /*
308 * 0 1 2 3
309 * 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
310 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
311 * | Route Distinguisher |
312 * | (8 octets) |
313 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
314 * | IPv4 prefix |
315 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
316 * | Prefix Length | Must Be Zero |
317 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
318 */
319 struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t {
320 u_int8_t rd [8];
321 u_int8_t prefix [4];
322 u_int8_t prefix_len;
323 };
324
325 /*
326 * 0 1 2 3
327 * 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
328 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
329 * | Route Distinguisher |
330 * | (8 octets) |
331 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
332 * | IPv6 prefix |
333 * | (16 octets) |
334 * | |
335 * | |
336 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
337 * | Prefix Length | Must Be Zero |
338 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
339 */
340 struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t {
341 u_int8_t rd [8];
342 u_int8_t prefix [16];
343 u_int8_t prefix_len;
344 };
345
346 /*
347 * 0 1 2 3
348 * 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
349 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
350 * | Route Distinguisher |
351 * | (8 octets) |
352 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
353 * | Sender's CE ID | Receiver's CE ID |
354 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
355 * | Encapsulation Type | Must Be Zero |
356 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
357 * 0 1 2 3
358 */
359 struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t {
360 u_int8_t rd [8];
361 u_int8_t sender_ce_id [2];
362 u_int8_t receiver_ce_id [2];
363 u_int8_t encapsulation[2];
364 };
365
366 /*
367 * 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
368 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
369 * | Remote PE Address |
370 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
371 * | VC ID |
372 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
373 * | Encapsulation Type | Must Be Zero |
374 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
375 */
376 struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_old_t {
377 u_int8_t remote_pe_address [4];
378 u_int8_t vc_id [4];
379 u_int8_t encapsulation[2];
380 };
381
382 /*
383 * 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
384 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
385 * | Sender's PE Address |
386 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
387 * | Remote PE Address |
388 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
389 * | VC ID |
390 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
391 * | Encapsulation Type | Must Be Zero |
392 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
393 */
394 struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_t {
395 u_int8_t sender_pe_address [4];
396 u_int8_t remote_pe_address [4];
397 u_int8_t vc_id [4];
398 u_int8_t encapsulation[2];
399 };
400
401 /*
402 * 0 1 2 3
403 * 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
404 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
405 * | MTU | Address Type | Resvd (SBZ) |
406 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
407 * | Downstream IP Address (4 or 16 octets) |
408 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
409 * | Downstream Interface Address (4 or 16 octets) |
410 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
411 * | Hash Key Type | Depth Limit | Multipath Length |
412 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
413 * . .
414 * . (Multipath Information) .
415 * . .
416 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
417 * | Downstream Label | Protocol |
418 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
419 * . .
420 * . .
421 * . .
422 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
423 * | Downstream Label | Protocol |
424 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
425 */
426 struct lspping_tlv_downstream_map_ipv4_t {
427 u_int8_t mtu [2];
428 u_int8_t address_type;
429 u_int8_t res;
430 u_int8_t downstream_ip[4];
431 u_int8_t downstream_interface[4];
432 };
433
434 struct lspping_tlv_downstream_map_ipv6_t {
435 u_int8_t mtu [2];
436 u_int8_t address_type;
437 u_int8_t res;
438 u_int8_t downstream_ip[16];
439 u_int8_t downstream_interface[16];
440 };
441
442 struct lspping_tlv_downstream_map_info_t {
443 u_int8_t hash_key_type;
444 u_int8_t depth_limit;
445 u_int8_t multipath_length [2];
446 };
447
448 #define LSPPING_AFI_IPV4 1
449 #define LSPPING_AFI_UNMB 2
450 #define LSPPING_AFI_IPV6 3
451
452 static const struct tok lspping_tlv_downstream_addr_values[] = {
453 { LSPPING_AFI_IPV4, "IPv4"},
454 { LSPPING_AFI_IPV6, "IPv6"},
455 { LSPPING_AFI_UNMB, "Unnumbered"},
456 { 0, NULL}
457 };
458
459 void
460 lspping_print(netdissect_options *ndo,
461 register const u_char *pptr, register u_int len) {
462
463 const struct lspping_common_header *lspping_com_header;
464 const struct lspping_tlv_header *lspping_tlv_header;
465 const struct lspping_tlv_header *lspping_subtlv_header;
466 const u_char *tptr,*tlv_tptr,*subtlv_tptr;
467 int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen;
468 int tlv_hexdump,subtlv_hexdump;
469 int lspping_subtlv_len,lspping_subtlv_type;
470 struct timeval timestamp;
471
472 union {
473 const struct lspping_tlv_downstream_map_ipv4_t *lspping_tlv_downstream_map_ipv4;
474 const struct lspping_tlv_downstream_map_ipv6_t *lspping_tlv_downstream_map_ipv6;
475 const struct lspping_tlv_downstream_map_info_t *lspping_tlv_downstream_map_info;
476 } tlv_ptr;
477
478 union {
479 const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *lspping_tlv_targetfec_subtlv_ldp_ipv4;
480 const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *lspping_tlv_targetfec_subtlv_ldp_ipv6;
481 const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *lspping_tlv_targetfec_subtlv_rsvp_ipv4;
482 const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *lspping_tlv_targetfec_subtlv_rsvp_ipv6;
483 const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv4;
484 const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv6;
485 const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *lspping_tlv_targetfec_subtlv_l2vpn_endpt;
486 const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_old_t *lspping_tlv_targetfec_subtlv_l2vpn_vcid_old;
487 const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_t *lspping_tlv_targetfec_subtlv_l2vpn_vcid;
488 const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *lspping_tlv_targetfec_subtlv_bgp_ipv4;
489 const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *lspping_tlv_targetfec_subtlv_bgp_ipv6;
490 } subtlv_ptr;
491
492 tptr=pptr;
493 lspping_com_header = (const struct lspping_common_header *)pptr;
494 ND_TCHECK(*lspping_com_header);
495
496 /*
497 * Sanity checking of the header.
498 */
499 if (EXTRACT_16BITS(&lspping_com_header->version[0]) != LSPPING_VERSION) {
500 ND_PRINT((ndo, "LSP-PING version %u packet not supported",
501 EXTRACT_16BITS(&lspping_com_header->version[0])));
502 return;
503 }
504
505 /* in non-verbose mode just lets print the basic Message Type*/
506 if (ndo->ndo_vflag < 1) {
507 ND_PRINT((ndo, "LSP-PINGv%u, %s, seq %u, length: %u",
508 EXTRACT_16BITS(&lspping_com_header->version[0]),
509 tok2str(lspping_msg_type_values, "unknown (%u)",lspping_com_header->msg_type),
510 EXTRACT_32BITS(lspping_com_header->seq_number),
511 len));
512 return;
513 }
514
515 /* ok they seem to want to know everything - lets fully decode it */
516
517 tlen=len;
518
519 ND_PRINT((ndo, "\n\tLSP-PINGv%u, msg-type: %s (%u), length: %u\n\t reply-mode: %s (%u)",
520 EXTRACT_16BITS(&lspping_com_header->version[0]),
521 tok2str(lspping_msg_type_values, "unknown",lspping_com_header->msg_type),
522 lspping_com_header->msg_type,
523 len,
524 tok2str(lspping_reply_mode_values, "unknown",lspping_com_header->reply_mode),
525 lspping_com_header->reply_mode));
526
527 /*
528 * the following return codes require that the subcode is attached
529 * at the end of the translated token output
530 */
531 if (lspping_com_header->return_code == 3 ||
532 lspping_com_header->return_code == 4 ||
533 lspping_com_header->return_code == 8 ||
534 lspping_com_header->return_code == 10 ||
535 lspping_com_header->return_code == 11 ||
536 lspping_com_header->return_code == 12 )
537 ND_PRINT((ndo, "\n\t Return Code: %s %u (%u)\n\t Return Subcode: (%u)",
538 tok2str(lspping_return_code_values, "unknown",lspping_com_header->return_code),
539 lspping_com_header->return_subcode,
540 lspping_com_header->return_code,
541 lspping_com_header->return_subcode));
542 else
543 ND_PRINT((ndo, "\n\t Return Code: %s (%u)\n\t Return Subcode: (%u)",
544 tok2str(lspping_return_code_values, "unknown",lspping_com_header->return_code),
545 lspping_com_header->return_code,
546 lspping_com_header->return_subcode));
547
548 ND_PRINT((ndo, "\n\t Sender Handle: 0x%08x, Sequence: %u",
549 EXTRACT_32BITS(lspping_com_header->sender_handle),
550 EXTRACT_32BITS(lspping_com_header->seq_number)));
551
552 timestamp.tv_sec=EXTRACT_32BITS(lspping_com_header->ts_sent_sec);
553 timestamp.tv_usec=EXTRACT_32BITS(lspping_com_header->ts_sent_usec);
554 ND_PRINT((ndo, "\n\t Sender Timestamp: "));
555 ts_print(ndo, &timestamp);
556
557 timestamp.tv_sec=EXTRACT_32BITS(lspping_com_header->ts_rcvd_sec);
558 timestamp.tv_usec=EXTRACT_32BITS(lspping_com_header->ts_rcvd_usec);
559 ND_PRINT((ndo, "Receiver Timestamp: "));
560 if ((timestamp.tv_sec != 0) && (timestamp.tv_usec != 0))
561 ts_print(ndo, &timestamp);
562 else
563 ND_PRINT((ndo, "no timestamp"));
564
565 tptr+=sizeof(const struct lspping_common_header);
566 tlen-=sizeof(const struct lspping_common_header);
567
568 while(tlen>(int)sizeof(struct lspping_tlv_header)) {
569
570 /* did we capture enough for fully decoding the tlv header ? */
571 if (!ND_TTEST2(*tptr, sizeof(struct lspping_tlv_header)))
572 goto trunc;
573
574 lspping_tlv_header = (const struct lspping_tlv_header *)tptr;
575 lspping_tlv_type=EXTRACT_16BITS(lspping_tlv_header->type);
576 lspping_tlv_len=EXTRACT_16BITS(lspping_tlv_header->length);
577
578 /* some little sanity checking */
579 if (lspping_tlv_type == 0 || lspping_tlv_len == 0)
580 return;
581
582 if(lspping_tlv_len < 4) {
583 ND_PRINT((ndo, "\n\t ERROR: TLV %u bogus size %u",lspping_tlv_type,lspping_tlv_len));
584 return;
585 }
586
587 ND_PRINT((ndo, "\n\t %s TLV (%u), length: %u",
588 tok2str(lspping_tlv_values,
589 "Unknown",
590 lspping_tlv_type),
591 lspping_tlv_type,
592 lspping_tlv_len));
593
594 tlv_tptr=tptr+sizeof(struct lspping_tlv_header);
595 tlv_tlen=lspping_tlv_len; /* header not included -> no adjustment */
596
597 /* did we capture enough for fully decoding the tlv ? */
598 if (!ND_TTEST2(*tptr, lspping_tlv_len))
599 goto trunc;
600 tlv_hexdump=FALSE;
601
602 switch(lspping_tlv_type) {
603 case LSPPING_TLV_TARGET_FEC_STACK:
604 while(tlv_tlen>(int)sizeof(struct lspping_tlv_header)) {
605
606 /* did we capture enough for fully decoding the subtlv header ? */
607 if (!ND_TTEST2(*tptr, sizeof(struct lspping_tlv_header)))
608 goto trunc;
609 subtlv_hexdump=FALSE;
610
611 lspping_subtlv_header = (const struct lspping_tlv_header *)tlv_tptr;
612 lspping_subtlv_type=EXTRACT_16BITS(lspping_subtlv_header->type);
613 lspping_subtlv_len=EXTRACT_16BITS(lspping_subtlv_header->length);
614 subtlv_tptr=tlv_tptr+sizeof(struct lspping_tlv_header);
615
616 if (lspping_subtlv_len == 0)
617 break;
618
619 ND_PRINT((ndo, "\n\t %s subTLV (%u), length: %u",
620 tok2str(lspping_tlvtargetfec_subtlv_values,
621 "Unknown",
622 lspping_subtlv_type),
623 lspping_subtlv_type,
624 lspping_subtlv_len));
625
626 switch(lspping_subtlv_type) {
627
628 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4:
629 subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 = \
630 (const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr;
631 ND_PRINT((ndo, "\n\t %s/%u",
632 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix),
633 subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len));
634 break;
635
636 #ifdef INET6
637 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6:
638 subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 = \
639 (const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr;
640 ND_PRINT((ndo, "\n\t %s/%u",
641 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix),
642 subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len));
643 break;
644 #endif
645
646 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4:
647 subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 = \
648 (const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr;
649 ND_PRINT((ndo, "\n\t %s/%u, sender-id %s",
650 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix),
651 subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len,
652 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->sender_id)));
653 break;
654
655 #ifdef INET6
656 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6:
657 subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 = \
658 (const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr;
659 ND_PRINT((ndo, "\n\t %s/%u, sender-id %s",
660 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix),
661 subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len,
662 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->sender_id)));
663 break;
664 #endif
665
666 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4:
667 subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 = \
668 (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr;
669 ND_PRINT((ndo, "\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" \
670 "\n\t tunnel-id 0x%04x, extended tunnel-id %s",
671 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint),
672 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender),
673 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id),
674 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id),
675 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id)));
676 break;
677
678 #ifdef INET6
679 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6:
680 subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 = \
681 (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr;
682 ND_PRINT((ndo, "\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" \
683 "\n\t tunnel-id 0x%04x, extended tunnel-id %s",
684 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint),
685 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender),
686 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id),
687 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id),
688 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id)));
689 break;
690 #endif
691
692 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4:
693 subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 = \
694 (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr;
695 ND_PRINT((ndo, "\n\t RD: %s, %s/%u",
696 bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd),
697 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix),
698 subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len));
699 break;
700
701 #ifdef INET6
702 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6:
703 subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 = \
704 (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr;
705 ND_PRINT((ndo, "\n\t RD: %s, %s/%u",
706 bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd),
707 ip6addr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix),
708 subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len));
709 break;
710 #endif
711
712 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT:
713 subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt = \
714 (const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *)subtlv_tptr;
715 ND_PRINT((ndo, "\n\t RD: %s, Sender CE-ID: %u, Receiver CE-ID: %u" \
716 "\n\t Encapsulation Type: %s (%u)",
717 bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->rd),
718 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->sender_ce_id),
719 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->receiver_ce_id),
720 tok2str(l2vpn_encaps_values,
721 "unknown",
722 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)),
723 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)));
724
725 break;
726
727 /* the old L2VPN VCID subTLV does not have support for the sender field */
728 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID_OLD:
729 subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old = \
730 (const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_old_t *)subtlv_tptr;
731 ND_PRINT((ndo, "\n\t Remote PE: %s" \
732 "\n\t VC-ID: 0x%08x, Encapsulation Type: %s (%u)",
733 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->remote_pe_address),
734 EXTRACT_32BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->vc_id),
735 tok2str(l2vpn_encaps_values,
736 "unknown",
737 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->encapsulation)),
738 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->encapsulation)));
739
740 break;
741
742 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID:
743 subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid = \
744 (const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_t *)subtlv_tptr;
745 ND_PRINT((ndo, "\n\t Sender PE: %s, Remote PE: %s" \
746 "\n\t VC-ID: 0x%08x, Encapsulation Type: %s (%u)",
747 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->sender_pe_address),
748 ipaddr_string(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->remote_pe_address),
749 EXTRACT_32BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->vc_id),
750 tok2str(l2vpn_encaps_values,
751 "unknown",
752 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->encapsulation)),
753 EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->encapsulation)));
754
755 break;
756
757 default:
758 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
759 break;
760 }
761 /* do we want to see an additionally subtlv hexdump ? */
762 if (ndo->ndo_vflag > 1 || subtlv_hexdump==TRUE)
763 print_unknown_data(ndo, tlv_tptr+sizeof(struct lspping_tlv_header), \
764 "\n\t ",
765 lspping_subtlv_len);
766
767 tlv_tptr+=lspping_subtlv_len;
768 tlv_tlen-=lspping_subtlv_len+sizeof(struct lspping_tlv_header);
769 }
770 break;
771
772 case LSPPING_TLV_DOWNSTREAM_MAPPING:
773 /* that strange thing with the downstream map TLV is that until now
774 * we do not know if its IPv4 or IPv6 , after we found the adress-type
775 * lets recast the tlv_tptr and move on */
776
777 tlv_ptr.lspping_tlv_downstream_map_ipv4= \
778 (const struct lspping_tlv_downstream_map_ipv4_t *)tlv_tptr;
779 tlv_ptr.lspping_tlv_downstream_map_ipv6= \
780 (const struct lspping_tlv_downstream_map_ipv6_t *)tlv_tptr;
781 ND_PRINT((ndo, "\n\t MTU: %u, Address-Type: %s (%u)",
782 EXTRACT_16BITS(tlv_ptr.lspping_tlv_downstream_map_ipv4->mtu),
783 tok2str(lspping_tlv_downstream_addr_values,
784 "unknown",
785 tlv_ptr.lspping_tlv_downstream_map_ipv4->address_type),
786 tlv_ptr.lspping_tlv_downstream_map_ipv4->address_type));
787
788 switch(tlv_ptr.lspping_tlv_downstream_map_ipv4->address_type) {
789
790 case LSPPING_AFI_IPV4:
791 ND_PRINT((ndo, "\n\t Downstream IP: %s" \
792 "\n\t Downstream Interface IP: %s",
793 ipaddr_string(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip),
794 ipaddr_string(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface)));
795 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
796 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
797 break;
798 #ifdef INET6
799 case LSPPING_AFI_IPV6:
800 ND_PRINT((ndo, "\n\t Downstream IP: %s" \
801 "\n\t Downstream Interface IP: %s",
802 ip6addr_string(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_ip),
803 ip6addr_string(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_interface)));
804 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
805 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
806 break;
807 #endif
808 case LSPPING_AFI_UNMB:
809 ND_PRINT((ndo, "\n\t Downstream IP: %s" \
810 "\n\t Downstream Interface Index: 0x%08x",
811 ipaddr_string(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip),
812 EXTRACT_32BITS(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface)));
813 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
814 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
815 break;
816
817 default:
818 /* should not happen ! - no error message - tok2str() has barked already */
819 break;
820 }
821
822 tlv_ptr.lspping_tlv_downstream_map_info= \
823 (const struct lspping_tlv_downstream_map_info_t *)tlv_tptr;
824
825 /* FIXME add hash-key type, depth limit, multipath processing */
826
827
828 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_info_t);
829 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_info_t);
830
831 /* FIXME print downstream labels */
832
833
834 tlv_hexdump=TRUE; /* dump the TLV until code complete */
835
836 break;
837
838 case LSPPING_TLV_BFD_DISCRIMINATOR:
839 tptr += sizeof(struct lspping_tlv_header);
840 if (!ND_TTEST2(*tptr, LSPPING_TLV_BFD_DISCRIMINATOR_LEN))
841 goto trunc;
842 ND_PRINT((ndo, "\n\t BFD Discriminator 0x%08x", EXTRACT_32BITS(tptr)));
843 break;
844
845 case LSPPING_TLV_VENDOR_ENTERPRISE:
846 {
847 u_int32_t vendor_id;
848
849 if (!ND_TTEST2(*tptr, LSPPING_TLV_VENDOR_ENTERPRISE_LEN))
850 goto trunc;
851 vendor_id = EXTRACT_32BITS(tlv_tptr);
852 ND_PRINT((ndo, "\n\t Vendor: %s (0x%04x)",
853 tok2str(smi_values, "Unknown", vendor_id),
854 vendor_id));
855 }
856 break;
857
858 /*
859 * FIXME those are the defined TLVs that lack a decoder
860 * you are welcome to contribute code ;-)
861 */
862 case LSPPING_TLV_PAD:
863 case LSPPING_TLV_ERROR_CODE:
864 case LSPPING_TLV_VENDOR_PRIVATE:
865
866 default:
867 if (ndo->ndo_vflag <= 1)
868 print_unknown_data(ndo, tlv_tptr, "\n\t ", tlv_tlen);
869 break;
870 }
871 /* do we want to see an additionally tlv hexdump ? */
872 if (ndo->ndo_vflag > 1 || tlv_hexdump==TRUE)
873 print_unknown_data(ndo, tptr+sizeof(struct lspping_tlv_header), "\n\t ",
874 lspping_tlv_len);
875
876
877 /* All TLVs are aligned to four octet boundary */
878 if (lspping_tlv_len % 4) {
879 lspping_tlv_len += (4 - lspping_tlv_len % 4);
880 }
881
882 tptr+=lspping_tlv_len+sizeof(struct lspping_tlv_header);
883 tlen-=lspping_tlv_len+sizeof(struct lspping_tlv_header);
884 }
885 return;
886 trunc:
887 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
888 }
889 /*
890 * Local Variables:
891 * c-style: whitesmith
892 * c-basic-offset: 8
893 * End:
894 */
[mirror] the TCPdump network dissector