tcpdump  4.99.1
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print-lspping.c
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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@gredler.at)
14  */
15 
16 /* \summary: MPLS LSP PING printer */
17 
18 /* specification: RFC 4379 */
19 
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23 
24 #include "netdissect-stdinc.h"
25 
26 #define ND_LONGJMP_FROM_TCHECK
27 #include "netdissect.h"
28 #include "extract.h"
29 #include "addrtoname.h"
30 #include "ntp.h"
31 
32 #include "l2vpn.h"
33 #include "oui.h"
34 
35 
36 /*
37  * LSPPING common header
38  *
39  * 0 1 2 3
40  * 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
41  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
42  * | Version Number | Must Be Zero |
43  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
44  * | Message Type | Reply mode | Return Code | Return Subcode|
45  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
46  * | Sender's Handle |
47  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
48  * | Sequence Number |
49  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
50  * | TimeStamp Sent (seconds) |
51  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
52  * | TimeStamp Sent (microseconds) |
53  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
54  * | TimeStamp Received (seconds) |
55  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
56  * | TimeStamp Received (microseconds) |
57  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
58  * | TLVs ... |
59  * . .
60  * . .
61  * . .
62  */
63 
73  struct l_fixedpt ts_sent;
74  struct l_fixedpt ts_rcvd;
75 };
76 
77 #define LSPPING_VERSION 1
78 
79 static const struct tok lspping_msg_type_values[] = {
80  { 1, "MPLS Echo Request"},
81  { 2, "MPLS Echo Reply"},
82  { 0, NULL}
83 };
84 
85 static const struct tok lspping_reply_mode_values[] = {
86  { 1, "Do not reply"},
87  { 2, "Reply via an IPv4/IPv6 UDP packet"},
88  { 3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"},
89  { 4, "Reply via application level control channel"},
90  { 0, NULL}
91 };
92 
93 static const struct tok lspping_return_code_values[] = {
94  { 0, "No return code or return code contained in the Error Code TLV"},
95  { 1, "Malformed echo request received"},
96  { 2, "One or more of the TLVs was not understood"},
97  { 3, "Replying router is an egress for the FEC at stack depth"},
98  { 4, "Replying router has no mapping for the FEC at stack depth"},
99  { 5, "Reserved"},
100  { 6, "Reserved"},
101  { 7, "Reserved"},
102  { 8, "Label switched at stack-depth"},
103  { 9, "Label switched but no MPLS forwarding at stack-depth"},
104  { 10, "Mapping for this FEC is not the given label at stack depth"},
105  { 11, "No label entry at stack-depth"},
106  { 12, "Protocol not associated with interface at FEC stack depth"},
107  { 13, "Premature termination of ping due to label stack shrinking to a single label"},
108  { 0, NULL},
109 };
110 
111 
112 /*
113  * LSPPING TLV header
114  * 0 1 2 3
115  * 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
116  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
117  * | Type | Length |
118  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
119  * | Value |
120  * . .
121  * . .
122  * . .
123  * | |
124  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
125  */
126 
130 };
131 
132 #define LSPPING_TLV_TARGET_FEC_STACK 1
133 #define LSPPING_TLV_DOWNSTREAM_MAPPING 2
134 #define LSPPING_TLV_PAD 3
135 /* not assigned 4 */
136 #define LSPPING_TLV_VENDOR_ENTERPRISE 5
137 #define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4
138 /* not assigned 6 */
139 #define LSPPING_TLV_INTERFACE_LABEL_STACK 7
140 /* not assigned 8 */
141 #define LSPPING_TLV_ERROR_CODE 9
142 #define LSPPING_TLV_REPLY_TOS_BYTE 10
143 #define LSPPING_TLV_BFD_DISCRIMINATOR 15 /* draft-ietf-bfd-mpls-02 */
144 #define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4
145 #define LSPPING_TLV_VENDOR_PRIVATE 0xfc00
146 
147 static const struct tok lspping_tlv_values[] = {
148  { LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" },
149  { LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" },
150  { LSPPING_TLV_PAD, "Pad" },
151  { LSPPING_TLV_ERROR_CODE, "Error Code" },
152  { LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" },
153  { LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" },
154  { LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" },
155  { LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" },
156  { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" },
157  { 0, NULL}
158 };
159 
160 #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1
161 #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2
162 #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3
163 #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4
164 /* not assigned 5 */
165 #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6
166 #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7
167 #define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8
168 #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD 9
169 #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW 10
170 #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_129_PW 11
171 #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 12
172 #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 13
173 #define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV4 14
174 #define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV6 15
175 #define LSPPING_TLV_TARGETFEC_SUBTLV_NIL_FEC 16
176 
177 static const struct tok lspping_tlvtargetfec_subtlv_values[] = {
178  { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"},
179  { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6, "LDP IPv6 prefix"},
180  { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4, "RSVP IPv4 Session Query"},
181  { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6, "RSVP IPv6 Session Query"},
182  { 5, "Reserved"},
183  { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"},
184  { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"},
185  { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"},
186  { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD, "FEC 128 pseudowire (old)"},
187  { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW, "FEC 128 pseudowire"},
188  { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"},
189  { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"},
190  { 0, NULL}
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  * | IPv4 prefix |
198  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
199  * | Prefix Length | Must Be Zero |
200  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
201  */
205 };
206 
207 /*
208  * 0 1 2 3
209  * 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
210  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
211  * | IPv6 prefix |
212  * | (16 octets) |
213  * | |
214  * | |
215  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
216  * | Prefix Length | Must Be Zero |
217  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
218  */
222 };
223 
224 /*
225  * 0 1 2 3
226  * 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
227  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
228  * | IPv4 tunnel end point address |
229  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
230  * | Must Be Zero | Tunnel ID |
231  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
232  * | Extended Tunnel ID |
233  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
234  * | IPv4 tunnel sender address |
235  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
236  * | Must Be Zero | LSP ID |
237  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
238  */
247 };
248 
249 /*
250  * 0 1 2 3
251  * 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
252  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
253  * | IPv6 tunnel end point address |
254  * | |
255  * | |
256  * | |
257  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
258  * | Must Be Zero | Tunnel ID |
259  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
260  * | Extended Tunnel ID |
261  * | |
262  * | |
263  * | |
264  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
265  * | IPv6 tunnel sender address |
266  * | |
267  * | |
268  * | |
269  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
270  * | Must Be Zero | LSP ID |
271  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
272  */
281 };
282 
283 /*
284  * 0 1 2 3
285  * 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
286  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
287  * | Route Distinguisher |
288  * | (8 octets) |
289  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
290  * | IPv4 prefix |
291  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
292  * | Prefix Length | Must Be Zero |
293  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
294  */
299 };
300 
301 /*
302  * 0 1 2 3
303  * 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
304  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
305  * | Route Distinguisher |
306  * | (8 octets) |
307  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
308  * | IPv6 prefix |
309  * | (16 octets) |
310  * | |
311  * | |
312  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
313  * | Prefix Length | Must Be Zero |
314  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
315  */
320 };
321 
322 /*
323  * 0 1 2 3
324  * 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
325  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
326  * | Route Distinguisher |
327  * | (8 octets) |
328  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
329  * | Sender's VE ID | Receiver's VE ID |
330  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
331  * | Encapsulation Type | Must Be Zero |
332  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
333  * 0 1 2 3
334  */
340 };
341 
342 /*
343  * 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
344  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
345  * | Remote PE Address |
346  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
347  * | PW ID |
348  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
349  * | PW Type | Must Be Zero |
350  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
351  */
356 };
357 
358 /*
359  * 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
360  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
361  * | Sender's PE Address |
362  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
363  * | Remote PE Address |
364  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
365  * | PW ID |
366  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
367  * | PW Type | Must Be Zero |
368  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
369  */
375 };
376 
377 /*
378  * 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
379  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
380  * | IPv4 prefix |
381  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
382  * | Prefix Length | Must Be Zero |
383  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
384  */
388 };
389 
390 /*
391  * 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
392  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
393  * | IPv6 prefix |
394  * | (16 octets) |
395  * | |
396  * | |
397  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
398  * | Prefix Length | Must Be Zero |
399  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
400  */
404 };
405 
406 /*
407  * 0 1 2 3
408  * 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
409  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
410  * | MTU | Address Type | Resvd (SBZ) |
411  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
412  * | Downstream IP Address (4 or 16 octets) |
413  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
414  * | Downstream Interface Address (4 or 16 octets) |
415  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
416  * | Multipath Type| Depth Limit | Multipath Length |
417  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
418  * . .
419  * . (Multipath Information) .
420  * . .
421  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
422  * | Downstream Label | Protocol |
423  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
424  * . .
425  * . .
426  * . .
427  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
428  * | Downstream Label | Protocol |
429  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
430  */
431 /* Enough to get the address type */
436 };
437 
444 };
445 
452 };
453 
460 };
461 
468 };
469 
474 };
475 
476 #define LSPPING_AFI_IPV4 1
477 #define LSPPING_AFI_IPV4_UNMB 2
478 #define LSPPING_AFI_IPV6 3
479 #define LSPPING_AFI_IPV6_UNMB 4
480 
481 static const struct tok lspping_tlv_downstream_addr_values[] = {
482  { LSPPING_AFI_IPV4, "IPv4"},
483  { LSPPING_AFI_IPV4_UNMB, "Unnumbered IPv4"},
484  { LSPPING_AFI_IPV6, "IPv6"},
485  { LSPPING_AFI_IPV6_UNMB, "IPv6"},
486  { 0, NULL}
487 };
488 
489 void
491  const u_char *pptr, u_int len)
492 {
493  const struct lspping_common_header *lspping_com_header;
495  const struct lspping_tlv_header *lspping_subtlv_header;
496  const u_char *tptr,*tlv_tptr,*subtlv_tptr;
497  u_int return_code, return_subcode;
498  u_int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen;
499  int tlv_hexdump,subtlv_hexdump;
500  u_int lspping_subtlv_len,lspping_subtlv_type;
501  uint32_t int_part, fraction;
502  u_int address_type;
503 
504  union {
505  const struct lspping_tlv_downstream_map_t *lspping_tlv_downstream_map;
506  const struct lspping_tlv_downstream_map_ipv4_t *lspping_tlv_downstream_map_ipv4;
507  const struct lspping_tlv_downstream_map_ipv4_unmb_t *lspping_tlv_downstream_map_ipv4_unmb;
508  const struct lspping_tlv_downstream_map_ipv6_t *lspping_tlv_downstream_map_ipv6;
509  const struct lspping_tlv_downstream_map_ipv6_unmb_t *lspping_tlv_downstream_map_ipv6_unmb;
510  const struct lspping_tlv_downstream_map_info_t *lspping_tlv_downstream_map_info;
511  } tlv_ptr;
512 
513  union {
514  const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *lspping_tlv_targetfec_subtlv_ldp_ipv4;
515  const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *lspping_tlv_targetfec_subtlv_ldp_ipv6;
516  const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *lspping_tlv_targetfec_subtlv_rsvp_ipv4;
517  const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *lspping_tlv_targetfec_subtlv_rsvp_ipv6;
518  const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv4;
519  const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv6;
520  const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *lspping_tlv_targetfec_subtlv_l2vpn_endpt;
521  const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *lspping_tlv_targetfec_subtlv_l2vpn_vcid_old;
522  const struct lspping_tlv_targetfec_subtlv_fec_128_pw *lspping_tlv_targetfec_subtlv_l2vpn_vcid;
523  const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *lspping_tlv_targetfec_subtlv_bgp_ipv4;
524  const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *lspping_tlv_targetfec_subtlv_bgp_ipv6;
525  } subtlv_ptr;
526 
527  ndo->ndo_protocol = "lspping";
528  tptr=pptr;
529  lspping_com_header = (const struct lspping_common_header *)pptr;
530  if (len < sizeof(struct lspping_common_header))
531  goto tooshort;
532  ND_TCHECK_SIZE(lspping_com_header);
533 
534  /*
535  * Sanity checking of the header.
536  */
537  if (GET_BE_U_2(lspping_com_header->version) != LSPPING_VERSION) {
538  ND_PRINT("LSP-PING version %u packet not supported",
539  GET_BE_U_2(lspping_com_header->version));
540  return;
541  }
542 
543  /* in non-verbose mode just lets print the basic Message Type*/
544  if (ndo->ndo_vflag < 1) {
545  ND_PRINT("LSP-PINGv%u, %s, seq %u, length: %u",
546  GET_BE_U_2(lspping_com_header->version),
547  tok2str(lspping_msg_type_values, "unknown (%u)",GET_U_1(lspping_com_header->msg_type)),
548  GET_BE_U_4(lspping_com_header->seq_number),
549  len);
550  return;
551  }
552 
553  /* ok they seem to want to know everything - lets fully decode it */
554 
555  tlen=len;
556 
557  ND_PRINT("\n\tLSP-PINGv%u, msg-type: %s (%u), length: %u\n\t reply-mode: %s (%u)",
558  GET_BE_U_2(lspping_com_header->version),
559  tok2str(lspping_msg_type_values, "unknown",GET_U_1(lspping_com_header->msg_type)),
560  GET_U_1(lspping_com_header->msg_type),
561  len,
562  tok2str(lspping_reply_mode_values, "unknown",GET_U_1(lspping_com_header->reply_mode)),
563  GET_U_1(lspping_com_header->reply_mode));
564 
565  /*
566  * the following return codes require that the subcode is attached
567  * at the end of the translated token output
568  */
569  return_code = GET_U_1(lspping_com_header->return_code);
570  return_subcode = GET_U_1(lspping_com_header->return_subcode);
571  if (return_code == 3 ||
572  return_code == 4 ||
573  return_code == 8 ||
574  return_code == 10 ||
575  return_code == 11 ||
576  return_code == 12 )
577  ND_PRINT("\n\t Return Code: %s %u (%u)\n\t Return Subcode: (%u)",
580  return_code,
582  else
583  ND_PRINT("\n\t Return Code: %s (%u)\n\t Return Subcode: (%u)",
585  return_code,
587 
588  ND_PRINT("\n\t Sender Handle: 0x%08x, Sequence: %u",
589  GET_BE_U_4(lspping_com_header->sender_handle),
590  GET_BE_U_4(lspping_com_header->seq_number));
591 
592  ND_PRINT("\n\t Sender Timestamp: ");
593  p_ntp_time(ndo, &lspping_com_header->ts_sent);
594  ND_PRINT(" ");
595 
596  int_part=GET_BE_U_4(lspping_com_header->ts_rcvd.int_part);
597  fraction=GET_BE_U_4(lspping_com_header->ts_rcvd.fraction);
598  ND_PRINT("Receiver Timestamp: ");
599  if (! (int_part == 0 && fraction == 0))
600  p_ntp_time(ndo, &lspping_com_header->ts_rcvd);
601  else
602  ND_PRINT("no timestamp");
603 
604  tptr+=sizeof(struct lspping_common_header);
605  tlen-=sizeof(struct lspping_common_header);
606 
607  while (tlen != 0) {
608  /* Does the TLV go past the end of the packet? */
609  if (tlen < sizeof(struct lspping_tlv_header))
610  goto tooshort;
611 
612  lspping_tlv_header = (const struct lspping_tlv_header *)tptr;
613  lspping_tlv_type=GET_BE_U_2(lspping_tlv_header->type);
614  lspping_tlv_len=GET_BE_U_2(lspping_tlv_header->length);
615 
616  ND_PRINT("\n\t %s TLV (%u), length: %u",
618  "Unknown",
619  lspping_tlv_type),
620  lspping_tlv_type,
621  lspping_tlv_len);
622 
623  /* some little sanity checking */
624  if (lspping_tlv_len == 0) {
625  tptr+=sizeof(struct lspping_tlv_header);
626  tlen-=sizeof(struct lspping_tlv_header);
627  continue; /* no value to dissect */
628  }
629 
630  tlv_tptr=tptr+sizeof(struct lspping_tlv_header);
631  tlv_tlen=lspping_tlv_len; /* header not included -> no adjustment */
632 
633  /* Does the TLV go past the end of the packet? */
634  if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header))
635  goto tooshort;
636  /* did we capture enough for fully decoding the tlv ? */
637  ND_TCHECK_LEN(tlv_tptr, lspping_tlv_len);
638  tlv_hexdump=FALSE;
639 
640  switch(lspping_tlv_type) {
642  while (tlv_tlen != 0) {
643  /* Does the subTLV header go past the end of the TLV? */
644  if (tlv_tlen < sizeof(struct lspping_tlv_header)) {
645  ND_PRINT("\n\t TLV is too short");
646  tlv_hexdump = TRUE;
647  goto tlv_tooshort;
648  }
649  subtlv_hexdump=FALSE;
650 
651  lspping_subtlv_header = (const struct lspping_tlv_header *)tlv_tptr;
652  lspping_subtlv_type=GET_BE_U_2(lspping_subtlv_header->type);
653  lspping_subtlv_len=GET_BE_U_2(lspping_subtlv_header->length);
654  subtlv_tptr=tlv_tptr+sizeof(struct lspping_tlv_header);
655 
656  /* Does the subTLV go past the end of the TLV? */
657  if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) {
658  ND_PRINT("\n\t TLV is too short");
659  tlv_hexdump = TRUE;
660  goto tlv_tooshort;
661  }
662 
663  /* Did we capture enough for fully decoding the subTLV? */
664  ND_TCHECK_LEN(subtlv_tptr, lspping_subtlv_len);
665 
666  ND_PRINT("\n\t %s subTLV (%u), length: %u",
668  "Unknown",
669  lspping_subtlv_type),
670  lspping_subtlv_type,
671  lspping_subtlv_len);
672 
673  switch(lspping_subtlv_type) {
674 
676  /* Is the subTLV length correct? */
677  if (lspping_subtlv_len != 5) {
678  ND_PRINT("\n\t invalid subTLV length, should be 5");
679  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
680  } else {
681  subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 =
682  (const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr;
683  ND_PRINT("\n\t %s/%u",
684  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix),
685  GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len));
686  }
687  break;
688 
690  /* Is the subTLV length correct? */
691  if (lspping_subtlv_len != 17) {
692  ND_PRINT("\n\t invalid subTLV length, should be 17");
693  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
694  } else {
695  subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 =
696  (const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr;
697  ND_PRINT("\n\t %s/%u",
698  GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix),
699  GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len));
700  }
701  break;
702 
704  /* Is the subTLV length correct? */
705  if (lspping_subtlv_len != 5) {
706  ND_PRINT("\n\t invalid subTLV length, should be 5");
707  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
708  } else {
709  subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 =
710  (const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr;
711  ND_PRINT("\n\t %s/%u",
712  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix),
713  GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len));
714  }
715  break;
716 
718  /* Is the subTLV length correct? */
719  if (lspping_subtlv_len != 17) {
720  ND_PRINT("\n\t invalid subTLV length, should be 17");
721  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
722  } else {
723  subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 =
724  (const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr;
725  ND_PRINT("\n\t %s/%u",
726  GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix),
727  GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len));
728  }
729  break;
730 
732  /* Is the subTLV length correct? */
733  if (lspping_subtlv_len != 20) {
734  ND_PRINT("\n\t invalid subTLV length, should be 20");
735  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
736  } else {
737  subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 =
738  (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr;
739  ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x"
740  "\n\t tunnel-id 0x%04x, extended tunnel-id %s",
741  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint),
742  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender),
743  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id),
744  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id),
745  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id));
746  }
747  break;
748 
750  /* Is the subTLV length correct? */
751  if (lspping_subtlv_len != 56) {
752  ND_PRINT("\n\t invalid subTLV length, should be 56");
753  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
754  } else {
755  subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 =
756  (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr;
757  ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x"
758  "\n\t tunnel-id 0x%04x, extended tunnel-id %s",
759  GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint),
760  GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender),
761  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id),
762  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id),
763  GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id));
764  }
765  break;
766 
768  /* Is the subTLV length correct? */
769  if (lspping_subtlv_len != 13) {
770  ND_PRINT("\n\t invalid subTLV length, should be 13");
771  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
772  } else {
773  subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 =
774  (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr;
775  ND_PRINT("\n\t RD: %s, %s/%u",
776  bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd),
777  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix),
778  GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len));
779  }
780  break;
781 
783  /* Is the subTLV length correct? */
784  if (lspping_subtlv_len != 25) {
785  ND_PRINT("\n\t invalid subTLV length, should be 25");
786  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
787  } else {
788  subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 =
789  (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr;
790  ND_PRINT("\n\t RD: %s, %s/%u",
791  bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd),
792  GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix),
793  GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len));
794  }
795  break;
796 
798  /* Is the subTLV length correct? */
799  if (lspping_subtlv_len != 14) {
800  ND_PRINT("\n\t invalid subTLV length, should be 14");
801  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
802  } else {
803  subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt =
804  (const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *)subtlv_tptr;
805  ND_PRINT("\n\t RD: %s, Sender VE ID: %u, Receiver VE ID: %u"
806  "\n\t Encapsulation Type: %s (%u)",
807  bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->rd),
808  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->sender_ve_id),
809  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->receiver_ve_id),
811  "unknown",
812  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)),
813  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation));
814  }
815  break;
816 
817  /* the old L2VPN VCID subTLV does not have support for the sender field */
819  /* Is the subTLV length correct? */
820  if (lspping_subtlv_len != 10) {
821  ND_PRINT("\n\t invalid subTLV length, should be 10");
822  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
823  } else {
824  subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old =
825  (const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *)subtlv_tptr;
826  ND_PRINT("\n\t Remote PE: %s"
827  "\n\t PW ID: 0x%08x, PW Type: %s (%u)",
828  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->remote_pe_address),
829  GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_id),
831  "unknown",
832  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type)),
833  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type));
834  }
835  break;
836 
838  /* Is the subTLV length correct? */
839  if (lspping_subtlv_len != 14) {
840  ND_PRINT("\n\t invalid subTLV length, should be 14");
841  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
842  } else {
843  subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid =
844  (const struct lspping_tlv_targetfec_subtlv_fec_128_pw *)subtlv_tptr;
845  ND_PRINT("\n\t Sender PE: %s, Remote PE: %s"
846  "\n\t PW ID: 0x%08x, PW Type: %s (%u)",
847  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->sender_pe_address),
848  GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->remote_pe_address),
849  GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_id),
851  "unknown",
852  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type)),
853  GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type));
854  }
855  break;
856 
857  default:
858  subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
859  break;
860  }
861  /* do we want to see an additionally subtlv hexdump ? */
862  if (ndo->ndo_vflag > 1 || subtlv_hexdump==TRUE)
863  print_unknown_data(ndo, tlv_tptr+sizeof(struct lspping_tlv_header),
864  "\n\t ",
865  lspping_subtlv_len);
866 
867  /* All subTLVs are aligned to four octet boundary */
868  if (lspping_subtlv_len % 4) {
869  lspping_subtlv_len += 4 - (lspping_subtlv_len % 4);
870  /* Does the subTLV, including padding, go past the end of the TLV? */
871  if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) {
872  ND_PRINT("\n\t\t TLV is too short");
873  return;
874  }
875  }
876  tlv_tptr+=lspping_subtlv_len;
877  tlv_tlen-=lspping_subtlv_len+sizeof(struct lspping_tlv_header);
878  }
879  break;
880 
882  /* Does the header go past the end of the TLV? */
883  if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_t)) {
884  ND_PRINT("\n\t TLV is too short");
885  tlv_hexdump = TRUE;
886  goto tlv_tooshort;
887  }
888  /* Did we capture enough to get the address family? */
889  ND_TCHECK_LEN(tlv_tptr,
890  sizeof(struct lspping_tlv_downstream_map_t));
891 
892  tlv_ptr.lspping_tlv_downstream_map=
893  (const struct lspping_tlv_downstream_map_t *)tlv_tptr;
894 
895  /* that strange thing with the downstream map TLV is that until now
896  * we do not know if its IPv4 or IPv6 or is unnumbered; after
897  * we find the address-type, we recast the tlv_tptr and move on. */
898 
899  address_type = GET_U_1(tlv_ptr.lspping_tlv_downstream_map->address_type);
900  ND_PRINT("\n\t MTU: %u, Address-Type: %s (%u)",
901  GET_BE_U_2(tlv_ptr.lspping_tlv_downstream_map->mtu),
903  "unknown",
904  address_type),
905  address_type);
906 
907  switch(address_type) {
908 
909  case LSPPING_AFI_IPV4:
910  /* Does the data go past the end of the TLV? */
911  if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_t)) {
912  ND_PRINT("\n\t TLV is too short");
913  tlv_hexdump = TRUE;
914  goto tlv_tooshort;
915  }
916  /* Did we capture enough for this part of the TLV? */
917  ND_TCHECK_LEN(tlv_tptr,
918  sizeof(struct lspping_tlv_downstream_map_ipv4_t));
919 
920  tlv_ptr.lspping_tlv_downstream_map_ipv4=
921  (const struct lspping_tlv_downstream_map_ipv4_t *)tlv_tptr;
922  ND_PRINT("\n\t Downstream IP: %s"
923  "\n\t Downstream Interface IP: %s",
924  GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip),
925  GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface));
926  tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
927  tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
928  break;
930  /* Does the data go past the end of the TLV? */
931  if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t)) {
932  ND_PRINT("\n\t TLV is too short");
933  tlv_hexdump = TRUE;
934  goto tlv_tooshort;
935  }
936  /* Did we capture enough for this part of the TLV? */
937  ND_TCHECK_LEN(tlv_tptr,
939 
940  tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb=
941  (const struct lspping_tlv_downstream_map_ipv4_unmb_t *)tlv_tptr;
942  ND_PRINT("\n\t Downstream IP: %s"
943  "\n\t Downstream Interface Index: 0x%08x",
944  GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_ip),
945  GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_interface));
946  tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t);
947  tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t);
948  break;
949  case LSPPING_AFI_IPV6:
950  /* Does the data go past the end of the TLV? */
951  if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_t)) {
952  ND_PRINT("\n\t TLV is too short");
953  tlv_hexdump = TRUE;
954  goto tlv_tooshort;
955  }
956  /* Did we capture enough for this part of the TLV? */
957  ND_TCHECK_LEN(tlv_tptr,
958  sizeof(struct lspping_tlv_downstream_map_ipv6_t));
959 
960  tlv_ptr.lspping_tlv_downstream_map_ipv6=
961  (const struct lspping_tlv_downstream_map_ipv6_t *)tlv_tptr;
962  ND_PRINT("\n\t Downstream IP: %s"
963  "\n\t Downstream Interface IP: %s",
964  GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_ip),
965  GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_interface));
966  tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
967  tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
968  break;
970  /* Does the data go past the end of the TLV? */
971  if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t)) {
972  ND_PRINT("\n\t TLV is too short");
973  tlv_hexdump = TRUE;
974  goto tlv_tooshort;
975  }
976  /* Did we capture enough for this part of the TLV? */
977  ND_TCHECK_LEN(tlv_tptr,
979 
980  tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb=
981  (const struct lspping_tlv_downstream_map_ipv6_unmb_t *)tlv_tptr;
982  ND_PRINT("\n\t Downstream IP: %s"
983  "\n\t Downstream Interface Index: 0x%08x",
984  GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_ip),
985  GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_interface));
986  tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t);
987  tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t);
988  break;
989 
990  default:
991  /* should not happen ! - no error message - tok2str() has barked already */
992  break;
993  }
994 
995  /* Does the data go past the end of the TLV? */
996  if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_info_t)) {
997  ND_PRINT("\n\t TLV is too short");
998  tlv_hexdump = TRUE;
999  goto tlv_tooshort;
1000  }
1001  /* Did we capture enough for this part of the TLV? */
1002  ND_TCHECK_LEN(tlv_tptr,
1003  sizeof(struct lspping_tlv_downstream_map_info_t));
1004 
1005  tlv_ptr.lspping_tlv_downstream_map_info=
1006  (const struct lspping_tlv_downstream_map_info_t *)tlv_tptr;
1007 
1008  /* FIXME add hash-key type, depth limit, multipath processing */
1009 
1010  tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_info_t);
1011  tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_info_t);
1012 
1013  /* FIXME print downstream labels */
1014 
1015  tlv_hexdump=TRUE; /* dump the TLV until code complete */
1016 
1017  break;
1018 
1020  if (tlv_tlen < LSPPING_TLV_BFD_DISCRIMINATOR_LEN) {
1021  ND_PRINT("\n\t TLV is too short");
1022  tlv_hexdump = TRUE;
1023  goto tlv_tooshort;
1024  } else {
1025  ND_PRINT("\n\t BFD Discriminator 0x%08x", GET_BE_U_4(tlv_tptr));
1026  }
1027  break;
1028 
1030  {
1031  uint32_t vendor_id;
1032 
1033  if (tlv_tlen < LSPPING_TLV_VENDOR_ENTERPRISE_LEN) {
1034  ND_PRINT("\n\t TLV is too short");
1035  tlv_hexdump = TRUE;
1036  goto tlv_tooshort;
1037  } else {
1038  vendor_id = GET_BE_U_4(tlv_tptr);
1039  ND_PRINT("\n\t Vendor: %s (0x%04x)",
1040  tok2str(smi_values, "Unknown", vendor_id),
1041  vendor_id);
1042  }
1043  }
1044  break;
1045 
1046  /*
1047  * FIXME those are the defined TLVs that lack a decoder
1048  * you are welcome to contribute code ;-)
1049  */
1050  case LSPPING_TLV_PAD:
1053 
1054  default:
1055  if (ndo->ndo_vflag <= 1)
1056  print_unknown_data(ndo, tlv_tptr, "\n\t ", tlv_tlen);
1057  break;
1058  }
1059  /* do we want to see an additionally tlv hexdump ? */
1060  tlv_tooshort:
1061  if (ndo->ndo_vflag > 1 || tlv_hexdump==TRUE)
1062  print_unknown_data(ndo, tptr+sizeof(struct lspping_tlv_header), "\n\t ",
1063  lspping_tlv_len);
1064 
1065 
1066  /* All TLVs are aligned to four octet boundary */
1067  if (lspping_tlv_len % 4) {
1068  lspping_tlv_len += (4 - lspping_tlv_len % 4);
1069  /* Does the TLV, including padding, go past the end of the packet? */
1070  if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header))
1071  goto tooshort;
1072  }
1073 
1074  tptr+=lspping_tlv_len+sizeof(struct lspping_tlv_header);
1075  tlen-=lspping_tlv_len+sizeof(struct lspping_tlv_header);
1076  }
1077  return;
1078 tooshort:
1079  ND_PRINT("\n\t\t packet is too short");
1080 }
#define GET_IPADDR_STRING(p)
Definition: addrtoname.h:120
#define GET_IP6ADDR_STRING(p)
Definition: addrtoname.h:121
#define GET_BE_U_4(p)
Definition: extract.h:877
#define GET_BE_U_2(p)
Definition: extract.h:875
#define GET_U_1(p)
Definition: extract.h:872
const struct tok mpls_pw_types_values[]
Definition: l2vpn.c:66
#define TRUE
#define FALSE
unsigned char nd_uint16_t[2]
Definition: netdissect.h:47
int print_unknown_data(netdissect_options *, const u_char *, const char *, u_int)
Definition: util-print.c:441
#define ND_TCHECK_LEN(p, l)
Definition: netdissect.h:368
const char * bgp_vpn_rd_print(netdissect_options *, const u_char *)
Definition: print-bgp.c:757
const char * tok2str(const struct tok *, const char *, u_int)
Definition: util-print.c:485
#define ND_TCHECK_SIZE(p)
Definition: netdissect.h:372
unsigned char nd_byte
Definition: netdissect.h:108
unsigned char nd_ipv4[4]
Definition: netdissect.h:92
#define ND_PRINT(...)
Definition: netdissect.h:385
unsigned char nd_uint32_t[4]
Definition: netdissect.h:49
unsigned char nd_uint8_t[1]
Definition: netdissect.h:46
unsigned char nd_ipv6[16]
Definition: netdissect.h:97
void p_ntp_time(netdissect_options *ndo, const struct l_fixedpt *lfp)
Definition: ntp.c:34
const struct tok smi_values[]
Definition: oui.c:67
#define LSPPING_AFI_IPV4_UNMB
#define LSPPING_TLV_VENDOR_ENTERPRISE_LEN
#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW
#define LSPPING_TLV_DOWNSTREAM_MAPPING
#define LSPPING_TLV_TARGET_FEC_STACK
void lspping_print(netdissect_options *ndo, const u_char *pptr, u_int len)
#define LSPPING_TLV_VENDOR_ENTERPRISE
#define LSPPING_TLV_ERROR_CODE
#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4
static const struct tok lspping_tlvtargetfec_subtlv_values[]
#define LSPPING_VERSION
Definition: print-lspping.c:77
#define LSPPING_AFI_IPV6_UNMB
#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4
#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4
#define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6
#define LSPPING_AFI_IPV6
#define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6
#define LSPPING_TLV_BFD_DISCRIMINATOR_LEN
static const struct tok lspping_tlv_downstream_addr_values[]
#define LSPPING_TLV_PAD
#define LSPPING_TLV_REPLY_TOS_BYTE
#define LSPPING_TLV_VENDOR_PRIVATE
#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6
#define LSPPING_TLV_BFD_DISCRIMINATOR
#define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6
#define LSPPING_TLV_INTERFACE_LABEL_STACK
static const struct tok lspping_msg_type_values[]
Definition: print-lspping.c:79
#define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD
#define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4
#define LSPPING_AFI_IPV4
static const struct tok lspping_reply_mode_values[]
Definition: print-lspping.c:85
static const struct tok lspping_tlv_values[]
#define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT
static const struct tok lspping_return_code_values[]
Definition: print-lspping.c:93
Definition: ntp.h:44
nd_uint32_t int_part
Definition: ntp.h:45
nd_uint32_t fraction
Definition: ntp.h:46
struct l_fixedpt ts_sent
Definition: print-lspping.c:73
nd_uint8_t return_subcode
Definition: print-lspping.c:70
nd_uint16_t global_flags
Definition: print-lspping.c:66
nd_uint32_t sender_handle
Definition: print-lspping.c:71
nd_uint32_t seq_number
Definition: print-lspping.c:72
struct l_fixedpt ts_rcvd
Definition: print-lspping.c:74
nd_uint16_t length
const char * ndo_protocol
Definition: netdissect.h:218