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Fix a bunch of de-constifications.
[tcpdump] / print-sflow.c
1 /*
2 * Copyright (c) 1998-2007 The TCPDUMP project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that: (1) source code
6 * distributions retain the above copyright notice and this paragraph
7 * in its entirety, and (2) distributions including binary code include
8 * the above copyright notice and this paragraph in its entirety in
9 * the documentation or other materials provided with the distribution.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
13 * FOR A PARTICULAR PURPOSE.
14 *
15 * The SFLOW protocol as per http://www.sflow.org/developers/specifications.php
16 *
17 * Original code by Carles Kishimoto <carles.kishimoto@gmail.com>
18 *
19 * Expansion and refactoring by Rick Jones <rick.jones2@hp.com>
20 */
21
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25
26 #include <tcpdump-stdinc.h>
27
28 #include "interface.h"
29 #include "extract.h"
30 #include "addrtoname.h"
31
32 /*
33 * sFlow datagram
34 *
35 * 0 1 2 3
36 * 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
37 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
38 * | Sflow version (2,4,5) |
39 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
40 * | IP version (1 for IPv4 | 2 for IPv6) |
41 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
42 * | IP Address AGENT (4 or 16 bytes) |
43 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
44 * | Sub agent ID |
45 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
46 * | Datagram sequence number |
47 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
48 * | Switch uptime in ms |
49 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
50 * | num samples in datagram |
51 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
52 *
53 */
54
55 struct sflow_datagram_t {
56 uint8_t version[4];
57 uint8_t ip_version[4];
58 uint8_t agent[4];
59 uint8_t agent_id[4];
60 uint8_t seqnum[4];
61 uint8_t uptime[4];
62 uint8_t samples[4];
63 };
64
65 struct sflow_sample_header {
66 uint8_t format[4];
67 uint8_t len[4];
68 };
69
70 #define SFLOW_FLOW_SAMPLE 1
71 #define SFLOW_COUNTER_SAMPLE 2
72 #define SFLOW_EXPANDED_FLOW_SAMPLE 3
73 #define SFLOW_EXPANDED_COUNTER_SAMPLE 4
74
75 static const struct tok sflow_format_values[] = {
76 { SFLOW_FLOW_SAMPLE, "flow sample" },
77 { SFLOW_COUNTER_SAMPLE, "counter sample" },
78 { SFLOW_EXPANDED_FLOW_SAMPLE, "expanded flow sample" },
79 { SFLOW_EXPANDED_COUNTER_SAMPLE, "expanded counter sample" },
80 { 0, NULL}
81 };
82
83 struct sflow_flow_sample_t {
84 uint8_t seqnum[4];
85 uint8_t typesource[4];
86 uint8_t rate[4];
87 uint8_t pool[4];
88 uint8_t drops[4];
89 uint8_t in_interface[4];
90 uint8_t out_interface[4];
91 uint8_t records[4];
92
93 };
94
95 struct sflow_expanded_flow_sample_t {
96 uint8_t seqnum[4];
97 uint8_t type[4];
98 uint8_t index[4];
99 uint8_t rate[4];
100 uint8_t pool[4];
101 uint8_t drops[4];
102 uint8_t in_interface_format[4];
103 uint8_t in_interface_value[4];
104 uint8_t out_interface_format[4];
105 uint8_t out_interface_value[4];
106 uint8_t records[4];
107 };
108
109 #define SFLOW_FLOW_RAW_PACKET 1
110 #define SFLOW_FLOW_ETHERNET_FRAME 2
111 #define SFLOW_FLOW_IPV4_DATA 3
112 #define SFLOW_FLOW_IPV6_DATA 4
113 #define SFLOW_FLOW_EXTENDED_SWITCH_DATA 1001
114 #define SFLOW_FLOW_EXTENDED_ROUTER_DATA 1002
115 #define SFLOW_FLOW_EXTENDED_GATEWAY_DATA 1003
116 #define SFLOW_FLOW_EXTENDED_USER_DATA 1004
117 #define SFLOW_FLOW_EXTENDED_URL_DATA 1005
118 #define SFLOW_FLOW_EXTENDED_MPLS_DATA 1006
119 #define SFLOW_FLOW_EXTENDED_NAT_DATA 1007
120 #define SFLOW_FLOW_EXTENDED_MPLS_TUNNEL 1008
121 #define SFLOW_FLOW_EXTENDED_MPLS_VC 1009
122 #define SFLOW_FLOW_EXTENDED_MPLS_FEC 1010
123 #define SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC 1011
124 #define SFLOW_FLOW_EXTENDED_VLAN_TUNNEL 1012
125
126 static const struct tok sflow_flow_type_values[] = {
127 { SFLOW_FLOW_RAW_PACKET, "Raw packet"},
128 { SFLOW_FLOW_ETHERNET_FRAME, "Ethernet frame"},
129 { SFLOW_FLOW_IPV4_DATA, "IPv4 Data"},
130 { SFLOW_FLOW_IPV6_DATA, "IPv6 Data"},
131 { SFLOW_FLOW_EXTENDED_SWITCH_DATA, "Extended Switch data"},
132 { SFLOW_FLOW_EXTENDED_ROUTER_DATA, "Extended Router data"},
133 { SFLOW_FLOW_EXTENDED_GATEWAY_DATA, "Extended Gateway data"},
134 { SFLOW_FLOW_EXTENDED_USER_DATA, "Extended User data"},
135 { SFLOW_FLOW_EXTENDED_URL_DATA, "Extended URL data"},
136 { SFLOW_FLOW_EXTENDED_MPLS_DATA, "Extended MPLS data"},
137 { SFLOW_FLOW_EXTENDED_NAT_DATA, "Extended NAT data"},
138 { SFLOW_FLOW_EXTENDED_MPLS_TUNNEL, "Extended MPLS tunnel"},
139 { SFLOW_FLOW_EXTENDED_MPLS_VC, "Extended MPLS VC"},
140 { SFLOW_FLOW_EXTENDED_MPLS_FEC, "Extended MPLS FEC"},
141 { SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC, "Extended MPLS LVP FEC"},
142 { SFLOW_FLOW_EXTENDED_VLAN_TUNNEL, "Extended VLAN Tunnel"},
143 { 0, NULL}
144 };
145
146 #define SFLOW_HEADER_PROTOCOL_ETHERNET 1
147 #define SFLOW_HEADER_PROTOCOL_IPV4 11
148 #define SFLOW_HEADER_PROTOCOL_IPV6 12
149
150 static const struct tok sflow_flow_raw_protocol_values[] = {
151 { SFLOW_HEADER_PROTOCOL_ETHERNET, "Ethernet"},
152 { SFLOW_HEADER_PROTOCOL_IPV4, "IPv4"},
153 { SFLOW_HEADER_PROTOCOL_IPV6, "IPv6"},
154 { 0, NULL}
155 };
156
157 struct sflow_expanded_flow_raw_t {
158 uint8_t protocol[4];
159 uint8_t length[4];
160 uint8_t stripped_bytes[4];
161 uint8_t header_size[4];
162 };
163
164 struct sflow_ethernet_frame_t {
165 uint8_t length[4];
166 uint8_t src_mac[8];
167 uint8_t dst_mac[8];
168 uint8_t type[4];
169 };
170
171 struct sflow_extended_switch_data_t {
172 uint8_t src_vlan[4];
173 uint8_t src_pri[4];
174 uint8_t dst_vlan[4];
175 uint8_t dst_pri[4];
176 };
177
178 struct sflow_counter_record_t {
179 uint8_t format[4];
180 uint8_t length[4];
181 };
182
183 struct sflow_flow_record_t {
184 uint8_t format[4];
185 uint8_t length[4];
186 };
187
188 struct sflow_counter_sample_t {
189 uint8_t seqnum[4];
190 uint8_t typesource[4];
191 uint8_t records[4];
192 };
193
194 struct sflow_expanded_counter_sample_t {
195 uint8_t seqnum[4];
196 uint8_t type[4];
197 uint8_t index[4];
198 uint8_t records[4];
199 };
200
201 #define SFLOW_COUNTER_GENERIC 1
202 #define SFLOW_COUNTER_ETHERNET 2
203 #define SFLOW_COUNTER_TOKEN_RING 3
204 #define SFLOW_COUNTER_BASEVG 4
205 #define SFLOW_COUNTER_VLAN 5
206 #define SFLOW_COUNTER_PROCESSOR 1001
207
208 static const struct tok sflow_counter_type_values[] = {
209 { SFLOW_COUNTER_GENERIC, "Generic counter"},
210 { SFLOW_COUNTER_ETHERNET, "Ethernet counter"},
211 { SFLOW_COUNTER_TOKEN_RING, "Token ring counter"},
212 { SFLOW_COUNTER_BASEVG, "100 BaseVG counter"},
213 { SFLOW_COUNTER_VLAN, "Vlan counter"},
214 { SFLOW_COUNTER_PROCESSOR, "Processor counter"},
215 { 0, NULL}
216 };
217
218 #define SFLOW_IFACE_DIRECTION_UNKNOWN 0
219 #define SFLOW_IFACE_DIRECTION_FULLDUPLEX 1
220 #define SFLOW_IFACE_DIRECTION_HALFDUPLEX 2
221 #define SFLOW_IFACE_DIRECTION_IN 3
222 #define SFLOW_IFACE_DIRECTION_OUT 4
223
224 static const struct tok sflow_iface_direction_values[] = {
225 { SFLOW_IFACE_DIRECTION_UNKNOWN, "unknown"},
226 { SFLOW_IFACE_DIRECTION_FULLDUPLEX, "full-duplex"},
227 { SFLOW_IFACE_DIRECTION_HALFDUPLEX, "half-duplex"},
228 { SFLOW_IFACE_DIRECTION_IN, "in"},
229 { SFLOW_IFACE_DIRECTION_OUT, "out"},
230 { 0, NULL}
231 };
232
233 struct sflow_generic_counter_t {
234 uint8_t ifindex[4];
235 uint8_t iftype[4];
236 uint8_t ifspeed[8];
237 uint8_t ifdirection[4];
238 uint8_t ifstatus[4];
239 uint8_t ifinoctets[8];
240 uint8_t ifinunicastpkts[4];
241 uint8_t ifinmulticastpkts[4];
242 uint8_t ifinbroadcastpkts[4];
243 uint8_t ifindiscards[4];
244 uint8_t ifinerrors[4];
245 uint8_t ifinunkownprotos[4];
246 uint8_t ifoutoctets[8];
247 uint8_t ifoutunicastpkts[4];
248 uint8_t ifoutmulticastpkts[4];
249 uint8_t ifoutbroadcastpkts[4];
250 uint8_t ifoutdiscards[4];
251 uint8_t ifouterrors[4];
252 uint8_t ifpromiscmode[4];
253 };
254
255 struct sflow_ethernet_counter_t {
256 uint8_t alignerrors[4];
257 uint8_t fcserrors[4];
258 uint8_t single_collision_frames[4];
259 uint8_t multiple_collision_frames[4];
260 uint8_t test_errors[4];
261 uint8_t deferred_transmissions[4];
262 uint8_t late_collisions[4];
263 uint8_t excessive_collisions[4];
264 uint8_t mac_transmit_errors[4];
265 uint8_t carrier_sense_errors[4];
266 uint8_t frame_too_longs[4];
267 uint8_t mac_receive_errors[4];
268 uint8_t symbol_errors[4];
269 };
270
271 struct sflow_100basevg_counter_t {
272 uint8_t in_highpriority_frames[4];
273 uint8_t in_highpriority_octets[8];
274 uint8_t in_normpriority_frames[4];
275 uint8_t in_normpriority_octets[8];
276 uint8_t in_ipmerrors[4];
277 uint8_t in_oversized[4];
278 uint8_t in_data_errors[4];
279 uint8_t in_null_addressed_frames[4];
280 uint8_t out_highpriority_frames[4];
281 uint8_t out_highpriority_octets[8];
282 uint8_t transitioninto_frames[4];
283 uint8_t hc_in_highpriority_octets[8];
284 uint8_t hc_in_normpriority_octets[8];
285 uint8_t hc_out_highpriority_octets[8];
286 };
287
288 struct sflow_vlan_counter_t {
289 uint8_t vlan_id[4];
290 uint8_t octets[8];
291 uint8_t unicast_pkt[4];
292 uint8_t multicast_pkt[4];
293 uint8_t broadcast_pkt[4];
294 uint8_t discards[4];
295 };
296
297 static int
298 print_sflow_counter_generic(netdissect_options *ndo,
299 const u_char *pointer, u_int len)
300 {
301 const struct sflow_generic_counter_t *sflow_gen_counter;
302
303 if (len < sizeof(struct sflow_generic_counter_t))
304 return 1;
305
306
307 sflow_gen_counter = (const struct sflow_generic_counter_t *)pointer;
308 ND_PRINT((ndo, "\n\t ifindex %u, iftype %u, ifspeed %" PRIu64 ", ifdirection %u (%s)",
309 EXTRACT_32BITS(sflow_gen_counter->ifindex),
310 EXTRACT_32BITS(sflow_gen_counter->iftype),
311 EXTRACT_64BITS(sflow_gen_counter->ifspeed),
312 EXTRACT_32BITS(sflow_gen_counter->ifdirection),
313 tok2str(sflow_iface_direction_values, "Unknown",
314 EXTRACT_32BITS(sflow_gen_counter->ifdirection))));
315 ND_PRINT((ndo, "\n\t ifstatus %u, adminstatus: %s, operstatus: %s",
316 EXTRACT_32BITS(sflow_gen_counter->ifstatus),
317 EXTRACT_32BITS(sflow_gen_counter->ifstatus)&1 ? "up" : "down",
318 (EXTRACT_32BITS(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down"));
319 ND_PRINT((ndo, "\n\t In octets %" PRIu64
320 ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
321 EXTRACT_64BITS(sflow_gen_counter->ifinoctets),
322 EXTRACT_32BITS(sflow_gen_counter->ifinunicastpkts),
323 EXTRACT_32BITS(sflow_gen_counter->ifinmulticastpkts),
324 EXTRACT_32BITS(sflow_gen_counter->ifinbroadcastpkts),
325 EXTRACT_32BITS(sflow_gen_counter->ifindiscards)));
326 ND_PRINT((ndo, "\n\t In errors %u, unknown protos %u",
327 EXTRACT_32BITS(sflow_gen_counter->ifinerrors),
328 EXTRACT_32BITS(sflow_gen_counter->ifinunkownprotos)));
329 ND_PRINT((ndo, "\n\t Out octets %" PRIu64
330 ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
331 EXTRACT_64BITS(sflow_gen_counter->ifoutoctets),
332 EXTRACT_32BITS(sflow_gen_counter->ifoutunicastpkts),
333 EXTRACT_32BITS(sflow_gen_counter->ifoutmulticastpkts),
334 EXTRACT_32BITS(sflow_gen_counter->ifoutbroadcastpkts),
335 EXTRACT_32BITS(sflow_gen_counter->ifoutdiscards)));
336 ND_PRINT((ndo, "\n\t Out errors %u, promisc mode %u",
337 EXTRACT_32BITS(sflow_gen_counter->ifouterrors),
338 EXTRACT_32BITS(sflow_gen_counter->ifpromiscmode)));
339
340 return 0;
341 }
342
343 static int
344 print_sflow_counter_ethernet(netdissect_options *ndo,
345 const u_char *pointer, u_int len)
346 {
347 const struct sflow_ethernet_counter_t *sflow_eth_counter;
348
349 if (len < sizeof(struct sflow_ethernet_counter_t))
350 return 1;
351
352 sflow_eth_counter = (const struct sflow_ethernet_counter_t *)pointer;
353 ND_PRINT((ndo, "\n\t align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u",
354 EXTRACT_32BITS(sflow_eth_counter->alignerrors),
355 EXTRACT_32BITS(sflow_eth_counter->fcserrors),
356 EXTRACT_32BITS(sflow_eth_counter->single_collision_frames),
357 EXTRACT_32BITS(sflow_eth_counter->multiple_collision_frames),
358 EXTRACT_32BITS(sflow_eth_counter->test_errors)));
359 ND_PRINT((ndo, "\n\t deferred %u, late collision %u, excessive collision %u, mac trans error %u",
360 EXTRACT_32BITS(sflow_eth_counter->deferred_transmissions),
361 EXTRACT_32BITS(sflow_eth_counter->late_collisions),
362 EXTRACT_32BITS(sflow_eth_counter->excessive_collisions),
363 EXTRACT_32BITS(sflow_eth_counter->mac_transmit_errors)));
364 ND_PRINT((ndo, "\n\t carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u",
365 EXTRACT_32BITS(sflow_eth_counter->carrier_sense_errors),
366 EXTRACT_32BITS(sflow_eth_counter->frame_too_longs),
367 EXTRACT_32BITS(sflow_eth_counter->mac_receive_errors),
368 EXTRACT_32BITS(sflow_eth_counter->symbol_errors)));
369
370 return 0;
371 }
372
373 static int
374 print_sflow_counter_token_ring(netdissect_options *ndo _U_,
375 const u_char *pointer _U_, u_int len _U_)
376 {
377 return 0;
378 }
379
380 static int
381 print_sflow_counter_basevg(netdissect_options *ndo,
382 const u_char *pointer, u_int len)
383 {
384 const struct sflow_100basevg_counter_t *sflow_100basevg_counter;
385
386 if (len < sizeof(struct sflow_100basevg_counter_t))
387 return 1;
388
389 sflow_100basevg_counter = (const struct sflow_100basevg_counter_t *)pointer;
390 ND_PRINT((ndo, "\n\t in high prio frames %u, in high prio octets %" PRIu64,
391 EXTRACT_32BITS(sflow_100basevg_counter->in_highpriority_frames),
392 EXTRACT_64BITS(sflow_100basevg_counter->in_highpriority_octets)));
393 ND_PRINT((ndo, "\n\t in norm prio frames %u, in norm prio octets %" PRIu64,
394 EXTRACT_32BITS(sflow_100basevg_counter->in_normpriority_frames),
395 EXTRACT_64BITS(sflow_100basevg_counter->in_normpriority_octets)));
396 ND_PRINT((ndo, "\n\t in ipm errors %u, oversized %u, in data errors %u, null addressed frames %u",
397 EXTRACT_32BITS(sflow_100basevg_counter->in_ipmerrors),
398 EXTRACT_32BITS(sflow_100basevg_counter->in_oversized),
399 EXTRACT_32BITS(sflow_100basevg_counter->in_data_errors),
400 EXTRACT_32BITS(sflow_100basevg_counter->in_null_addressed_frames)));
401 ND_PRINT((ndo, "\n\t out high prio frames %u, out high prio octets %" PRIu64
402 ", trans into frames %u",
403 EXTRACT_32BITS(sflow_100basevg_counter->out_highpriority_frames),
404 EXTRACT_64BITS(sflow_100basevg_counter->out_highpriority_octets),
405 EXTRACT_32BITS(sflow_100basevg_counter->transitioninto_frames)));
406 ND_PRINT((ndo, "\n\t in hc high prio octets %" PRIu64
407 ", in hc norm prio octets %" PRIu64
408 ", out hc high prio octets %" PRIu64,
409 EXTRACT_64BITS(sflow_100basevg_counter->hc_in_highpriority_octets),
410 EXTRACT_64BITS(sflow_100basevg_counter->hc_in_normpriority_octets),
411 EXTRACT_64BITS(sflow_100basevg_counter->hc_out_highpriority_octets)));
412
413 return 0;
414 }
415
416 static int
417 print_sflow_counter_vlan(netdissect_options *ndo,
418 const u_char *pointer, u_int len)
419 {
420 const struct sflow_vlan_counter_t *sflow_vlan_counter;
421
422 if (len < sizeof(struct sflow_vlan_counter_t))
423 return 1;
424
425 sflow_vlan_counter = (const struct sflow_vlan_counter_t *)pointer;
426 ND_PRINT((ndo, "\n\t vlan_id %u, octets %" PRIu64
427 ", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u",
428 EXTRACT_32BITS(sflow_vlan_counter->vlan_id),
429 EXTRACT_64BITS(sflow_vlan_counter->octets),
430 EXTRACT_32BITS(sflow_vlan_counter->unicast_pkt),
431 EXTRACT_32BITS(sflow_vlan_counter->multicast_pkt),
432 EXTRACT_32BITS(sflow_vlan_counter->broadcast_pkt),
433 EXTRACT_32BITS(sflow_vlan_counter->discards)));
434
435 return 0;
436 }
437
438 struct sflow_processor_counter_t {
439 uint8_t five_sec_util[4];
440 uint8_t one_min_util[4];
441 uint8_t five_min_util[4];
442 uint8_t total_memory[8];
443 uint8_t free_memory[8];
444 };
445
446 static int
447 print_sflow_counter_processor(netdissect_options *ndo,
448 const u_char *pointer, u_int len)
449 {
450 const struct sflow_processor_counter_t *sflow_processor_counter;
451
452 if (len < sizeof(struct sflow_processor_counter_t))
453 return 1;
454
455 sflow_processor_counter = (const struct sflow_processor_counter_t *)pointer;
456 ND_PRINT((ndo, "\n\t 5sec %u, 1min %u, 5min %u, total_mem %" PRIu64
457 ", total_mem %" PRIu64,
458 EXTRACT_32BITS(sflow_processor_counter->five_sec_util),
459 EXTRACT_32BITS(sflow_processor_counter->one_min_util),
460 EXTRACT_32BITS(sflow_processor_counter->five_min_util),
461 EXTRACT_64BITS(sflow_processor_counter->total_memory),
462 EXTRACT_64BITS(sflow_processor_counter->free_memory)));
463
464 return 0;
465 }
466
467 static int
468 sflow_print_counter_records(netdissect_options *ndo,
469 const u_char *pointer, u_int len, u_int records)
470 {
471 u_int nrecords;
472 const u_char *tptr;
473 u_int tlen;
474 u_int counter_type;
475 u_int counter_len;
476 u_int enterprise;
477 const struct sflow_counter_record_t *sflow_counter_record;
478
479 nrecords = records;
480 tptr = pointer;
481 tlen = len;
482
483 while (nrecords > 0) {
484 /* do we have the "header?" */
485 if (tlen < sizeof(struct sflow_counter_record_t))
486 return 1;
487 sflow_counter_record = (const struct sflow_counter_record_t *)tptr;
488
489 enterprise = EXTRACT_32BITS(sflow_counter_record->format);
490 counter_type = enterprise & 0x0FFF;
491 enterprise = enterprise >> 20;
492 counter_len = EXTRACT_32BITS(sflow_counter_record->length);
493 ND_PRINT((ndo, "\n\t enterprise %u, %s (%u) length %u",
494 enterprise,
495 (enterprise == 0) ? tok2str(sflow_counter_type_values,"Unknown",counter_type) : "Unknown",
496 counter_type,
497 counter_len));
498
499 tptr += sizeof(struct sflow_counter_record_t);
500 tlen -= sizeof(struct sflow_counter_record_t);
501
502 if (tlen < counter_len)
503 return 1;
504 if (enterprise == 0) {
505 switch (counter_type) {
506 case SFLOW_COUNTER_GENERIC:
507 if (print_sflow_counter_generic(ndo, tptr, tlen))
508 return 1;
509 break;
510 case SFLOW_COUNTER_ETHERNET:
511 if (print_sflow_counter_ethernet(ndo, tptr, tlen))
512 return 1;
513 break;
514 case SFLOW_COUNTER_TOKEN_RING:
515 if (print_sflow_counter_token_ring(ndo, tptr,tlen))
516 return 1;
517 break;
518 case SFLOW_COUNTER_BASEVG:
519 if (print_sflow_counter_basevg(ndo, tptr, tlen))
520 return 1;
521 break;
522 case SFLOW_COUNTER_VLAN:
523 if (print_sflow_counter_vlan(ndo, tptr, tlen))
524 return 1;
525 break;
526 case SFLOW_COUNTER_PROCESSOR:
527 if (print_sflow_counter_processor(ndo, tptr, tlen))
528 return 1;
529 break;
530 default:
531 if (ndo->ndo_vflag <= 1)
532 print_unknown_data(ndo, tptr, "\n\t\t", counter_len);
533 break;
534 }
535 }
536 tptr += counter_len;
537 tlen -= counter_len;
538 nrecords--;
539
540 }
541
542 return 0;
543 }
544
545 static int
546 sflow_print_counter_sample(netdissect_options *ndo,
547 const u_char *pointer, u_int len)
548 {
549 const struct sflow_counter_sample_t *sflow_counter_sample;
550 u_int nrecords;
551 u_int typesource;
552 u_int type;
553 u_int index;
554
555
556 if (len < sizeof(struct sflow_counter_sample_t))
557 return 1;
558
559 sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer;
560
561 typesource = EXTRACT_32BITS(sflow_counter_sample->typesource);
562 nrecords = EXTRACT_32BITS(sflow_counter_sample->records);
563 type = typesource >> 24;
564 index = typesource & 0x0FFF;
565
566 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
567 EXTRACT_32BITS(sflow_counter_sample->seqnum),
568 type,
569 index,
570 nrecords));
571
572 return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_counter_sample_t),
573 len - sizeof(struct sflow_counter_sample_t),
574 nrecords);
575
576 }
577
578 static int
579 sflow_print_expanded_counter_sample(netdissect_options *ndo,
580 const u_char *pointer, u_int len)
581 {
582 const struct sflow_expanded_counter_sample_t *sflow_expanded_counter_sample;
583 u_int nrecords;
584
585
586 if (len < sizeof(struct sflow_expanded_counter_sample_t))
587 return 1;
588
589 sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer;
590
591 nrecords = EXTRACT_32BITS(sflow_expanded_counter_sample->records);
592
593 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
594 EXTRACT_32BITS(sflow_expanded_counter_sample->seqnum),
595 EXTRACT_32BITS(sflow_expanded_counter_sample->type),
596 EXTRACT_32BITS(sflow_expanded_counter_sample->index),
597 nrecords));
598
599 return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_expanded_counter_sample_t),
600 len - sizeof(struct sflow_expanded_counter_sample_t),
601 nrecords);
602
603 }
604
605 static int
606 print_sflow_raw_packet(netdissect_options *ndo,
607 const u_char *pointer, u_int len)
608 {
609 const struct sflow_expanded_flow_raw_t *sflow_flow_raw;
610
611 if (len < sizeof(struct sflow_expanded_flow_raw_t))
612 return 1;
613
614 sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer;
615 ND_PRINT((ndo, "\n\t protocol %s (%u), length %u, stripped bytes %u, header_size %u",
616 tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_32BITS(sflow_flow_raw->protocol)),
617 EXTRACT_32BITS(sflow_flow_raw->protocol),
618 EXTRACT_32BITS(sflow_flow_raw->length),
619 EXTRACT_32BITS(sflow_flow_raw->stripped_bytes),
620 EXTRACT_32BITS(sflow_flow_raw->header_size)));
621
622 /* QUESTION - should we attempt to print the raw header itself?
623 assuming of course there is wnough data present to do so... */
624
625 return 0;
626 }
627
628 static int
629 print_sflow_ethernet_frame(netdissect_options *ndo,
630 const u_char *pointer, u_int len)
631 {
632 const struct sflow_ethernet_frame_t *sflow_ethernet_frame;
633
634 if (len < sizeof(struct sflow_ethernet_frame_t))
635 return 1;
636
637 sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer;
638
639 ND_PRINT((ndo, "\n\t frame len %u, type %u",
640 EXTRACT_32BITS(sflow_ethernet_frame->length),
641 EXTRACT_32BITS(sflow_ethernet_frame->type)));
642
643 return 0;
644 }
645
646 static int
647 print_sflow_extended_switch_data(netdissect_options *ndo,
648 const u_char *pointer, u_int len)
649 {
650 const struct sflow_extended_switch_data_t *sflow_extended_sw_data;
651
652 if (len < sizeof(struct sflow_extended_switch_data_t))
653 return 1;
654
655 sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer;
656 ND_PRINT((ndo, "\n\t src vlan %u, src pri %u, dst vlan %u, dst pri %u",
657 EXTRACT_32BITS(sflow_extended_sw_data->src_vlan),
658 EXTRACT_32BITS(sflow_extended_sw_data->src_pri),
659 EXTRACT_32BITS(sflow_extended_sw_data->dst_vlan),
660 EXTRACT_32BITS(sflow_extended_sw_data->dst_pri)));
661
662 return 0;
663 }
664
665 static int
666 sflow_print_flow_records(netdissect_options *ndo,
667 const u_char *pointer, u_int len, u_int records)
668 {
669 u_int nrecords;
670 const u_char *tptr;
671 u_int tlen;
672 u_int flow_type;
673 u_int enterprise;
674 u_int flow_len;
675 const struct sflow_flow_record_t *sflow_flow_record;
676
677 nrecords = records;
678 tptr = pointer;
679 tlen = len;
680
681 while (nrecords > 0) {
682 /* do we have the "header?" */
683 if (tlen < sizeof(struct sflow_flow_record_t))
684 return 1;
685
686 sflow_flow_record = (const struct sflow_flow_record_t *)tptr;
687
688 /* so, the funky encoding means we cannot blythly mask-off
689 bits, we must also check the enterprise. */
690
691 enterprise = EXTRACT_32BITS(sflow_flow_record->format);
692 flow_type = enterprise & 0x0FFF;
693 enterprise = enterprise >> 12;
694 flow_len = EXTRACT_32BITS(sflow_flow_record->length);
695 ND_PRINT((ndo, "\n\t enterprise %u %s (%u) length %u",
696 enterprise,
697 (enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown",
698 flow_type,
699 flow_len));
700
701 tptr += sizeof(struct sflow_flow_record_t);
702 tlen -= sizeof(struct sflow_flow_record_t);
703
704 if (tlen < flow_len)
705 return 1;
706
707 if (enterprise == 0) {
708 switch (flow_type) {
709 case SFLOW_FLOW_RAW_PACKET:
710 if (print_sflow_raw_packet(ndo, tptr, tlen))
711 return 1;
712 break;
713 case SFLOW_FLOW_EXTENDED_SWITCH_DATA:
714 if (print_sflow_extended_switch_data(ndo, tptr, tlen))
715 return 1;
716 break;
717 case SFLOW_FLOW_ETHERNET_FRAME:
718 if (print_sflow_ethernet_frame(ndo, tptr, tlen))
719 return 1;
720 break;
721 /* FIXME these need a decoder */
722 case SFLOW_FLOW_IPV4_DATA:
723 case SFLOW_FLOW_IPV6_DATA:
724 case SFLOW_FLOW_EXTENDED_ROUTER_DATA:
725 case SFLOW_FLOW_EXTENDED_GATEWAY_DATA:
726 case SFLOW_FLOW_EXTENDED_USER_DATA:
727 case SFLOW_FLOW_EXTENDED_URL_DATA:
728 case SFLOW_FLOW_EXTENDED_MPLS_DATA:
729 case SFLOW_FLOW_EXTENDED_NAT_DATA:
730 case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL:
731 case SFLOW_FLOW_EXTENDED_MPLS_VC:
732 case SFLOW_FLOW_EXTENDED_MPLS_FEC:
733 case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC:
734 case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL:
735 break;
736 default:
737 if (ndo->ndo_vflag <= 1)
738 print_unknown_data(ndo, tptr, "\n\t\t", flow_len);
739 break;
740 }
741 }
742 tptr += flow_len;
743 tlen -= flow_len;
744 nrecords--;
745
746 }
747
748 return 0;
749 }
750
751 static int
752 sflow_print_flow_sample(netdissect_options *ndo,
753 const u_char *pointer, u_int len)
754 {
755 const struct sflow_flow_sample_t *sflow_flow_sample;
756 u_int nrecords;
757 u_int typesource;
758 u_int type;
759 u_int index;
760
761 if (len < sizeof(struct sflow_flow_sample_t))
762 return 1;
763
764 sflow_flow_sample = (const struct sflow_flow_sample_t *)pointer;
765
766 typesource = EXTRACT_32BITS(sflow_flow_sample->typesource);
767 nrecords = EXTRACT_32BITS(sflow_flow_sample->records);
768 type = typesource >> 24;
769 index = typesource & 0x0FFF;
770
771 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u",
772 EXTRACT_32BITS(sflow_flow_sample->seqnum),
773 type,
774 index,
775 EXTRACT_32BITS(sflow_flow_sample->rate),
776 EXTRACT_32BITS(sflow_flow_sample->pool),
777 EXTRACT_32BITS(sflow_flow_sample->drops),
778 EXTRACT_32BITS(sflow_flow_sample->in_interface),
779 EXTRACT_32BITS(sflow_flow_sample->out_interface),
780 nrecords));
781
782 return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_flow_sample_t),
783 len - sizeof(struct sflow_flow_sample_t),
784 nrecords);
785
786 }
787
788 static int
789 sflow_print_expanded_flow_sample(netdissect_options *ndo,
790 const u_char *pointer, u_int len)
791 {
792 const struct sflow_expanded_flow_sample_t *sflow_expanded_flow_sample;
793 u_int nrecords;
794
795 if (len < sizeof(struct sflow_expanded_flow_sample_t))
796 return 1;
797
798 sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer;
799
800 nrecords = EXTRACT_32BITS(sflow_expanded_flow_sample->records);
801
802 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u",
803 EXTRACT_32BITS(sflow_expanded_flow_sample->seqnum),
804 EXTRACT_32BITS(sflow_expanded_flow_sample->type),
805 EXTRACT_32BITS(sflow_expanded_flow_sample->index),
806 EXTRACT_32BITS(sflow_expanded_flow_sample->rate),
807 EXTRACT_32BITS(sflow_expanded_flow_sample->pool),
808 EXTRACT_32BITS(sflow_expanded_flow_sample->drops),
809 EXTRACT_32BITS(sflow_expanded_flow_sample->records)));
810
811 return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_expanded_flow_sample_t),
812 len - sizeof(struct sflow_expanded_flow_sample_t),
813 nrecords);
814
815 }
816
817 void
818 sflow_print(netdissect_options *ndo,
819 const u_char *pptr, u_int len)
820 {
821 const struct sflow_datagram_t *sflow_datagram;
822 const struct sflow_sample_header *sflow_sample;
823
824 const u_char *tptr;
825 u_int tlen;
826 uint32_t sflow_sample_type, sflow_sample_len;
827 uint32_t nsamples;
828
829
830 tptr = pptr;
831 tlen = len;
832 sflow_datagram = (const struct sflow_datagram_t *)pptr;
833 ND_TCHECK(*sflow_datagram);
834
835 /*
836 * Sanity checking of the header.
837 */
838 if (EXTRACT_32BITS(sflow_datagram->version) != 5) {
839 ND_PRINT((ndo, "sFlow version %u packet not supported",
840 EXTRACT_32BITS(sflow_datagram->version)));
841 return;
842 }
843
844 if (ndo->ndo_vflag < 1) {
845 ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, length %u",
846 EXTRACT_32BITS(sflow_datagram->version),
847 EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
848 ipaddr_string(ndo, sflow_datagram->agent),
849 EXTRACT_32BITS(sflow_datagram->agent_id),
850 len));
851 return;
852 }
853
854 /* ok they seem to want to know everything - lets fully decode it */
855 nsamples=EXTRACT_32BITS(sflow_datagram->samples);
856 ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u",
857 EXTRACT_32BITS(sflow_datagram->version),
858 EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
859 ipaddr_string(ndo, sflow_datagram->agent),
860 EXTRACT_32BITS(sflow_datagram->agent_id),
861 EXTRACT_32BITS(sflow_datagram->seqnum),
862 EXTRACT_32BITS(sflow_datagram->uptime),
863 nsamples,
864 len));
865
866 /* skip Common header */
867 tptr += sizeof(const struct sflow_datagram_t);
868 tlen -= sizeof(const struct sflow_datagram_t);
869
870 while (nsamples > 0 && tlen > 0) {
871 sflow_sample = (const struct sflow_sample_header *)tptr;
872 ND_TCHECK(*sflow_sample);
873
874 sflow_sample_type = (EXTRACT_32BITS(sflow_sample->format)&0x0FFF);
875 sflow_sample_len = EXTRACT_32BITS(sflow_sample->len);
876
877 if (tlen < sizeof(struct sflow_sample_header))
878 goto trunc;
879
880 tptr += sizeof(struct sflow_sample_header);
881 tlen -= sizeof(struct sflow_sample_header);
882
883 ND_PRINT((ndo, "\n\t%s (%u), length %u,",
884 tok2str(sflow_format_values, "Unknown", sflow_sample_type),
885 sflow_sample_type,
886 sflow_sample_len));
887
888 /* basic sanity check */
889 if (sflow_sample_type == 0 || sflow_sample_len ==0) {
890 return;
891 }
892
893 if (tlen < sflow_sample_len)
894 goto trunc;
895
896 /* did we capture enough for fully decoding the sample ? */
897 ND_TCHECK2(*tptr, sflow_sample_len);
898
899 switch(sflow_sample_type) {
900 case SFLOW_FLOW_SAMPLE:
901 if (sflow_print_flow_sample(ndo, tptr, tlen))
902 goto trunc;
903 break;
904
905 case SFLOW_COUNTER_SAMPLE:
906 if (sflow_print_counter_sample(ndo, tptr,tlen))
907 goto trunc;
908 break;
909
910 case SFLOW_EXPANDED_FLOW_SAMPLE:
911 if (sflow_print_expanded_flow_sample(ndo, tptr, tlen))
912 goto trunc;
913 break;
914
915 case SFLOW_EXPANDED_COUNTER_SAMPLE:
916 if (sflow_print_expanded_counter_sample(ndo, tptr,tlen))
917 goto trunc;
918 break;
919
920 default:
921 if (ndo->ndo_vflag <= 1)
922 print_unknown_data(ndo, tptr, "\n\t ", sflow_sample_len);
923 break;
924 }
925 tptr += sflow_sample_len;
926 tlen -= sflow_sample_len;
927 nsamples--;
928 }
929 return;
930
931 trunc:
932 ND_PRINT((ndo, "[|SFLOW]"));
933 }
934
935 /*
936 * Local Variables:
937 * c-style: whitesmith
938 * c-basic-offset: 4
939 * End:
940 */
[mirror] the TCPdump network dissector