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u_intN_t is dead, long live uintN_t.
[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 #define NETDISSECT_REWORKED
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include <tcpdump-stdinc.h>
28
29 #include "interface.h"
30 #include "extract.h"
31 #include "addrtoname.h"
32
33 /*
34 * sFlow datagram
35 *
36 * 0 1 2 3
37 * 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
38 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
39 * | Sflow version (2,4,5) |
40 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
41 * | IP version (1 for IPv4 | 2 for IPv6) |
42 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
43 * | IP Address AGENT (4 or 16 bytes) |
44 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
45 * | Sub agent ID |
46 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
47 * | Datagram sequence number |
48 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
49 * | Switch uptime in ms |
50 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
51 * | num samples in datagram |
52 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
53 *
54 */
55
56 struct sflow_datagram_t {
57 uint8_t version[4];
58 uint8_t ip_version[4];
59 uint8_t agent[4];
60 uint8_t agent_id[4];
61 uint8_t seqnum[4];
62 uint8_t uptime[4];
63 uint8_t samples[4];
64 };
65
66 struct sflow_sample_header {
67 uint8_t format[4];
68 uint8_t len[4];
69 };
70
71 #define SFLOW_FLOW_SAMPLE 1
72 #define SFLOW_COUNTER_SAMPLE 2
73 #define SFLOW_EXPANDED_FLOW_SAMPLE 3
74 #define SFLOW_EXPANDED_COUNTER_SAMPLE 4
75
76 static const struct tok sflow_format_values[] = {
77 { SFLOW_FLOW_SAMPLE, "flow sample" },
78 { SFLOW_COUNTER_SAMPLE, "counter sample" },
79 { SFLOW_EXPANDED_FLOW_SAMPLE, "expanded flow sample" },
80 { SFLOW_EXPANDED_COUNTER_SAMPLE, "expanded counter sample" },
81 { 0, NULL}
82 };
83
84 struct sflow_flow_sample_t {
85 uint8_t seqnum[4];
86 uint8_t typesource[4];
87 uint8_t rate[4];
88 uint8_t pool[4];
89 uint8_t drops[4];
90 uint8_t in_interface[4];
91 uint8_t out_interface[4];
92 uint8_t records[4];
93
94 };
95
96 struct sflow_expanded_flow_sample_t {
97 uint8_t seqnum[4];
98 uint8_t type[4];
99 uint8_t index[4];
100 uint8_t rate[4];
101 uint8_t pool[4];
102 uint8_t drops[4];
103 uint8_t in_interface_format[4];
104 uint8_t in_interface_value[4];
105 uint8_t out_interface_format[4];
106 uint8_t out_interface_value[4];
107 uint8_t records[4];
108 };
109
110 #define SFLOW_FLOW_RAW_PACKET 1
111 #define SFLOW_FLOW_ETHERNET_FRAME 2
112 #define SFLOW_FLOW_IPV4_DATA 3
113 #define SFLOW_FLOW_IPV6_DATA 4
114 #define SFLOW_FLOW_EXTENDED_SWITCH_DATA 1001
115 #define SFLOW_FLOW_EXTENDED_ROUTER_DATA 1002
116 #define SFLOW_FLOW_EXTENDED_GATEWAY_DATA 1003
117 #define SFLOW_FLOW_EXTENDED_USER_DATA 1004
118 #define SFLOW_FLOW_EXTENDED_URL_DATA 1005
119 #define SFLOW_FLOW_EXTENDED_MPLS_DATA 1006
120 #define SFLOW_FLOW_EXTENDED_NAT_DATA 1007
121 #define SFLOW_FLOW_EXTENDED_MPLS_TUNNEL 1008
122 #define SFLOW_FLOW_EXTENDED_MPLS_VC 1009
123 #define SFLOW_FLOW_EXTENDED_MPLS_FEC 1010
124 #define SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC 1011
125 #define SFLOW_FLOW_EXTENDED_VLAN_TUNNEL 1012
126
127 static const struct tok sflow_flow_type_values[] = {
128 { SFLOW_FLOW_RAW_PACKET, "Raw packet"},
129 { SFLOW_FLOW_ETHERNET_FRAME, "Ethernet frame"},
130 { SFLOW_FLOW_IPV4_DATA, "IPv4 Data"},
131 { SFLOW_FLOW_IPV6_DATA, "IPv6 Data"},
132 { SFLOW_FLOW_EXTENDED_SWITCH_DATA, "Extended Switch data"},
133 { SFLOW_FLOW_EXTENDED_ROUTER_DATA, "Extended Router data"},
134 { SFLOW_FLOW_EXTENDED_GATEWAY_DATA, "Extended Gateway data"},
135 { SFLOW_FLOW_EXTENDED_USER_DATA, "Extended User data"},
136 { SFLOW_FLOW_EXTENDED_URL_DATA, "Extended URL data"},
137 { SFLOW_FLOW_EXTENDED_MPLS_DATA, "Extended MPLS data"},
138 { SFLOW_FLOW_EXTENDED_NAT_DATA, "Extended NAT data"},
139 { SFLOW_FLOW_EXTENDED_MPLS_TUNNEL, "Extended MPLS tunnel"},
140 { SFLOW_FLOW_EXTENDED_MPLS_VC, "Extended MPLS VC"},
141 { SFLOW_FLOW_EXTENDED_MPLS_FEC, "Extended MPLS FEC"},
142 { SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC, "Extended MPLS LVP FEC"},
143 { SFLOW_FLOW_EXTENDED_VLAN_TUNNEL, "Extended VLAN Tunnel"},
144 { 0, NULL}
145 };
146
147 #define SFLOW_HEADER_PROTOCOL_ETHERNET 1
148 #define SFLOW_HEADER_PROTOCOL_IPV4 11
149 #define SFLOW_HEADER_PROTOCOL_IPV6 12
150
151 static const struct tok sflow_flow_raw_protocol_values[] = {
152 { SFLOW_HEADER_PROTOCOL_ETHERNET, "Ethernet"},
153 { SFLOW_HEADER_PROTOCOL_IPV4, "IPv4"},
154 { SFLOW_HEADER_PROTOCOL_IPV6, "IPv6"},
155 { 0, NULL}
156 };
157
158 struct sflow_expanded_flow_raw_t {
159 uint8_t protocol[4];
160 uint8_t length[4];
161 uint8_t stripped_bytes[4];
162 uint8_t header_size[4];
163 };
164
165 struct sflow_ethernet_frame_t {
166 uint8_t length[4];
167 uint8_t src_mac[8];
168 uint8_t dst_mac[8];
169 uint8_t type[4];
170 };
171
172 struct sflow_extended_switch_data_t {
173 uint8_t src_vlan[4];
174 uint8_t src_pri[4];
175 uint8_t dst_vlan[4];
176 uint8_t dst_pri[4];
177 };
178
179 struct sflow_counter_record_t {
180 uint8_t format[4];
181 uint8_t length[4];
182 };
183
184 struct sflow_flow_record_t {
185 uint8_t format[4];
186 uint8_t length[4];
187 };
188
189 struct sflow_counter_sample_t {
190 uint8_t seqnum[4];
191 uint8_t typesource[4];
192 uint8_t records[4];
193 };
194
195 struct sflow_expanded_counter_sample_t {
196 uint8_t seqnum[4];
197 uint8_t type[4];
198 uint8_t index[4];
199 uint8_t records[4];
200 };
201
202 #define SFLOW_COUNTER_GENERIC 1
203 #define SFLOW_COUNTER_ETHERNET 2
204 #define SFLOW_COUNTER_TOKEN_RING 3
205 #define SFLOW_COUNTER_BASEVG 4
206 #define SFLOW_COUNTER_VLAN 5
207 #define SFLOW_COUNTER_PROCESSOR 1001
208
209 static const struct tok sflow_counter_type_values[] = {
210 { SFLOW_COUNTER_GENERIC, "Generic counter"},
211 { SFLOW_COUNTER_ETHERNET, "Ethernet counter"},
212 { SFLOW_COUNTER_TOKEN_RING, "Token ring counter"},
213 { SFLOW_COUNTER_BASEVG, "100 BaseVG counter"},
214 { SFLOW_COUNTER_VLAN, "Vlan counter"},
215 { SFLOW_COUNTER_PROCESSOR, "Processor counter"},
216 { 0, NULL}
217 };
218
219 #define SFLOW_IFACE_DIRECTION_UNKNOWN 0
220 #define SFLOW_IFACE_DIRECTION_FULLDUPLEX 1
221 #define SFLOW_IFACE_DIRECTION_HALFDUPLEX 2
222 #define SFLOW_IFACE_DIRECTION_IN 3
223 #define SFLOW_IFACE_DIRECTION_OUT 4
224
225 static const struct tok sflow_iface_direction_values[] = {
226 { SFLOW_IFACE_DIRECTION_UNKNOWN, "unknown"},
227 { SFLOW_IFACE_DIRECTION_FULLDUPLEX, "full-duplex"},
228 { SFLOW_IFACE_DIRECTION_HALFDUPLEX, "half-duplex"},
229 { SFLOW_IFACE_DIRECTION_IN, "in"},
230 { SFLOW_IFACE_DIRECTION_OUT, "out"},
231 { 0, NULL}
232 };
233
234 struct sflow_generic_counter_t {
235 uint8_t ifindex[4];
236 uint8_t iftype[4];
237 uint8_t ifspeed[8];
238 uint8_t ifdirection[4];
239 uint8_t ifstatus[4];
240 uint8_t ifinoctets[8];
241 uint8_t ifinunicastpkts[4];
242 uint8_t ifinmulticastpkts[4];
243 uint8_t ifinbroadcastpkts[4];
244 uint8_t ifindiscards[4];
245 uint8_t ifinerrors[4];
246 uint8_t ifinunkownprotos[4];
247 uint8_t ifoutoctets[8];
248 uint8_t ifoutunicastpkts[4];
249 uint8_t ifoutmulticastpkts[4];
250 uint8_t ifoutbroadcastpkts[4];
251 uint8_t ifoutdiscards[4];
252 uint8_t ifouterrors[4];
253 uint8_t ifpromiscmode[4];
254 };
255
256 struct sflow_ethernet_counter_t {
257 uint8_t alignerrors[4];
258 uint8_t fcserrors[4];
259 uint8_t single_collision_frames[4];
260 uint8_t multiple_collision_frames[4];
261 uint8_t test_errors[4];
262 uint8_t deferred_transmissions[4];
263 uint8_t late_collisions[4];
264 uint8_t excessive_collisions[4];
265 uint8_t mac_transmit_errors[4];
266 uint8_t carrier_sense_errors[4];
267 uint8_t frame_too_longs[4];
268 uint8_t mac_receive_errors[4];
269 uint8_t symbol_errors[4];
270 };
271
272 struct sflow_100basevg_counter_t {
273 uint8_t in_highpriority_frames[4];
274 uint8_t in_highpriority_octets[8];
275 uint8_t in_normpriority_frames[4];
276 uint8_t in_normpriority_octets[8];
277 uint8_t in_ipmerrors[4];
278 uint8_t in_oversized[4];
279 uint8_t in_data_errors[4];
280 uint8_t in_null_addressed_frames[4];
281 uint8_t out_highpriority_frames[4];
282 uint8_t out_highpriority_octets[8];
283 uint8_t transitioninto_frames[4];
284 uint8_t hc_in_highpriority_octets[8];
285 uint8_t hc_in_normpriority_octets[8];
286 uint8_t hc_out_highpriority_octets[8];
287 };
288
289 struct sflow_vlan_counter_t {
290 uint8_t vlan_id[4];
291 uint8_t octets[8];
292 uint8_t unicast_pkt[4];
293 uint8_t multicast_pkt[4];
294 uint8_t broadcast_pkt[4];
295 uint8_t discards[4];
296 };
297
298 static int
299 print_sflow_counter_generic(netdissect_options *ndo,
300 const u_char *pointer, u_int len) {
301
302 const struct sflow_generic_counter_t *sflow_gen_counter;
303
304 if (len < sizeof(struct sflow_generic_counter_t))
305 return 1;
306
307
308 sflow_gen_counter = (const struct sflow_generic_counter_t *)pointer;
309 ND_PRINT((ndo, "\n\t ifindex %u, iftype %u, ifspeed %" PRIu64 ", ifdirection %u (%s)",
310 EXTRACT_32BITS(sflow_gen_counter->ifindex),
311 EXTRACT_32BITS(sflow_gen_counter->iftype),
312 EXTRACT_64BITS(sflow_gen_counter->ifspeed),
313 EXTRACT_32BITS(sflow_gen_counter->ifdirection),
314 tok2str(sflow_iface_direction_values, "Unknown",
315 EXTRACT_32BITS(sflow_gen_counter->ifdirection))));
316 ND_PRINT((ndo, "\n\t ifstatus %u, adminstatus: %s, operstatus: %s",
317 EXTRACT_32BITS(sflow_gen_counter->ifstatus),
318 EXTRACT_32BITS(sflow_gen_counter->ifstatus)&1 ? "up" : "down",
319 (EXTRACT_32BITS(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down"));
320 ND_PRINT((ndo, "\n\t In octets %" PRIu64
321 ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
322 EXTRACT_64BITS(sflow_gen_counter->ifinoctets),
323 EXTRACT_32BITS(sflow_gen_counter->ifinunicastpkts),
324 EXTRACT_32BITS(sflow_gen_counter->ifinmulticastpkts),
325 EXTRACT_32BITS(sflow_gen_counter->ifinbroadcastpkts),
326 EXTRACT_32BITS(sflow_gen_counter->ifindiscards)));
327 ND_PRINT((ndo, "\n\t In errors %u, unknown protos %u",
328 EXTRACT_32BITS(sflow_gen_counter->ifinerrors),
329 EXTRACT_32BITS(sflow_gen_counter->ifinunkownprotos)));
330 ND_PRINT((ndo, "\n\t Out octets %" PRIu64
331 ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
332 EXTRACT_64BITS(sflow_gen_counter->ifoutoctets),
333 EXTRACT_32BITS(sflow_gen_counter->ifoutunicastpkts),
334 EXTRACT_32BITS(sflow_gen_counter->ifoutmulticastpkts),
335 EXTRACT_32BITS(sflow_gen_counter->ifoutbroadcastpkts),
336 EXTRACT_32BITS(sflow_gen_counter->ifoutdiscards)));
337 ND_PRINT((ndo, "\n\t Out errors %u, promisc mode %u",
338 EXTRACT_32BITS(sflow_gen_counter->ifouterrors),
339 EXTRACT_32BITS(sflow_gen_counter->ifpromiscmode)));
340
341 return 0;
342 }
343
344 static int
345 print_sflow_counter_ethernet(netdissect_options *ndo,
346 const u_char *pointer, u_int len){
347
348 const struct sflow_ethernet_counter_t *sflow_eth_counter;
349
350 if (len < sizeof(struct sflow_ethernet_counter_t))
351 return 1;
352
353 sflow_eth_counter = (const struct sflow_ethernet_counter_t *)pointer;
354 ND_PRINT((ndo, "\n\t align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u",
355 EXTRACT_32BITS(sflow_eth_counter->alignerrors),
356 EXTRACT_32BITS(sflow_eth_counter->fcserrors),
357 EXTRACT_32BITS(sflow_eth_counter->single_collision_frames),
358 EXTRACT_32BITS(sflow_eth_counter->multiple_collision_frames),
359 EXTRACT_32BITS(sflow_eth_counter->test_errors)));
360 ND_PRINT((ndo, "\n\t deferred %u, late collision %u, excessive collision %u, mac trans error %u",
361 EXTRACT_32BITS(sflow_eth_counter->deferred_transmissions),
362 EXTRACT_32BITS(sflow_eth_counter->late_collisions),
363 EXTRACT_32BITS(sflow_eth_counter->excessive_collisions),
364 EXTRACT_32BITS(sflow_eth_counter->mac_transmit_errors)));
365 ND_PRINT((ndo, "\n\t carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u",
366 EXTRACT_32BITS(sflow_eth_counter->carrier_sense_errors),
367 EXTRACT_32BITS(sflow_eth_counter->frame_too_longs),
368 EXTRACT_32BITS(sflow_eth_counter->mac_receive_errors),
369 EXTRACT_32BITS(sflow_eth_counter->symbol_errors)));
370
371 return 0;
372 }
373
374 static int
375 print_sflow_counter_token_ring(netdissect_options *ndo _U_,
376 const u_char *pointer _U_, u_int len _U_) {
377
378 return 0;
379 }
380
381 static int
382 print_sflow_counter_basevg(netdissect_options *ndo,
383 const u_char *pointer, u_int len) {
384
385 const struct sflow_100basevg_counter_t *sflow_100basevg_counter;
386
387 if (len < sizeof(struct sflow_100basevg_counter_t))
388 return 1;
389
390 sflow_100basevg_counter = (const struct sflow_100basevg_counter_t *)pointer;
391 ND_PRINT((ndo, "\n\t in high prio frames %u, in high prio octets %" PRIu64,
392 EXTRACT_32BITS(sflow_100basevg_counter->in_highpriority_frames),
393 EXTRACT_64BITS(sflow_100basevg_counter->in_highpriority_octets)));
394 ND_PRINT((ndo, "\n\t in norm prio frames %u, in norm prio octets %" PRIu64,
395 EXTRACT_32BITS(sflow_100basevg_counter->in_normpriority_frames),
396 EXTRACT_64BITS(sflow_100basevg_counter->in_normpriority_octets)));
397 ND_PRINT((ndo, "\n\t in ipm errors %u, oversized %u, in data errors %u, null addressed frames %u",
398 EXTRACT_32BITS(sflow_100basevg_counter->in_ipmerrors),
399 EXTRACT_32BITS(sflow_100basevg_counter->in_oversized),
400 EXTRACT_32BITS(sflow_100basevg_counter->in_data_errors),
401 EXTRACT_32BITS(sflow_100basevg_counter->in_null_addressed_frames)));
402 ND_PRINT((ndo, "\n\t out high prio frames %u, out high prio octets %" PRIu64
403 ", trans into frames %u",
404 EXTRACT_32BITS(sflow_100basevg_counter->out_highpriority_frames),
405 EXTRACT_64BITS(sflow_100basevg_counter->out_highpriority_octets),
406 EXTRACT_32BITS(sflow_100basevg_counter->transitioninto_frames)));
407 ND_PRINT((ndo, "\n\t in hc high prio octets %" PRIu64
408 ", in hc norm prio octets %" PRIu64
409 ", out hc high prio octets %" PRIu64,
410 EXTRACT_64BITS(sflow_100basevg_counter->hc_in_highpriority_octets),
411 EXTRACT_64BITS(sflow_100basevg_counter->hc_in_normpriority_octets),
412 EXTRACT_64BITS(sflow_100basevg_counter->hc_out_highpriority_octets)));
413
414 return 0;
415 }
416
417 static int
418 print_sflow_counter_vlan(netdissect_options *ndo,
419 const u_char *pointer, u_int len) {
420
421 const struct sflow_vlan_counter_t *sflow_vlan_counter;
422
423 if (len < sizeof(struct sflow_vlan_counter_t))
424 return 1;
425
426 sflow_vlan_counter = (const struct sflow_vlan_counter_t *)pointer;
427 ND_PRINT((ndo, "\n\t vlan_id %u, octets %" PRIu64
428 ", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u",
429 EXTRACT_32BITS(sflow_vlan_counter->vlan_id),
430 EXTRACT_64BITS(sflow_vlan_counter->octets),
431 EXTRACT_32BITS(sflow_vlan_counter->unicast_pkt),
432 EXTRACT_32BITS(sflow_vlan_counter->multicast_pkt),
433 EXTRACT_32BITS(sflow_vlan_counter->broadcast_pkt),
434 EXTRACT_32BITS(sflow_vlan_counter->discards)));
435
436 return 0;
437 }
438
439 struct sflow_processor_counter_t {
440 uint8_t five_sec_util[4];
441 uint8_t one_min_util[4];
442 uint8_t five_min_util[4];
443 uint8_t total_memory[8];
444 uint8_t free_memory[8];
445 };
446
447 static int
448 print_sflow_counter_processor(netdissect_options *ndo,
449 const u_char *pointer, u_int len) {
450
451 const struct sflow_processor_counter_t *sflow_processor_counter;
452
453 if (len < sizeof(struct sflow_processor_counter_t))
454 return 1;
455
456 sflow_processor_counter = (const struct sflow_processor_counter_t *)pointer;
457 ND_PRINT((ndo, "\n\t 5sec %u, 1min %u, 5min %u, total_mem %" PRIu64
458 ", total_mem %" PRIu64,
459 EXTRACT_32BITS(sflow_processor_counter->five_sec_util),
460 EXTRACT_32BITS(sflow_processor_counter->one_min_util),
461 EXTRACT_32BITS(sflow_processor_counter->five_min_util),
462 EXTRACT_64BITS(sflow_processor_counter->total_memory),
463 EXTRACT_64BITS(sflow_processor_counter->free_memory)));
464
465 return 0;
466 }
467
468 static int
469 sflow_print_counter_records(netdissect_options *ndo,
470 const u_char *pointer, u_int len, u_int records) {
471
472 u_int nrecords;
473 const u_char *tptr;
474 u_int tlen;
475 u_int counter_type;
476 u_int counter_len;
477 u_int enterprise;
478 const struct sflow_counter_record_t *sflow_counter_record;
479
480 nrecords = records;
481 tptr = pointer;
482 tlen = len;
483
484 while (nrecords > 0) {
485 /* do we have the "header?" */
486 if (tlen < sizeof(struct sflow_counter_record_t))
487 return 1;
488 sflow_counter_record = (const struct sflow_counter_record_t *)tptr;
489
490 enterprise = EXTRACT_32BITS(sflow_counter_record->format);
491 counter_type = enterprise & 0x0FFF;
492 enterprise = enterprise >> 20;
493 counter_len = EXTRACT_32BITS(sflow_counter_record->length);
494 ND_PRINT((ndo, "\n\t enterprise %u, %s (%u) length %u",
495 enterprise,
496 (enterprise == 0) ? tok2str(sflow_counter_type_values,"Unknown",counter_type) : "Unknown",
497 counter_type,
498 counter_len));
499
500 tptr += sizeof(struct sflow_counter_record_t);
501 tlen -= sizeof(struct sflow_counter_record_t);
502
503 if (tlen < counter_len)
504 return 1;
505 if (enterprise == 0) {
506 switch (counter_type) {
507 case SFLOW_COUNTER_GENERIC:
508 if (print_sflow_counter_generic(ndo, tptr, tlen))
509 return 1;
510 break;
511 case SFLOW_COUNTER_ETHERNET:
512 if (print_sflow_counter_ethernet(ndo, tptr, tlen))
513 return 1;
514 break;
515 case SFLOW_COUNTER_TOKEN_RING:
516 if (print_sflow_counter_token_ring(ndo, tptr,tlen))
517 return 1;
518 break;
519 case SFLOW_COUNTER_BASEVG:
520 if (print_sflow_counter_basevg(ndo, tptr, tlen))
521 return 1;
522 break;
523 case SFLOW_COUNTER_VLAN:
524 if (print_sflow_counter_vlan(ndo, tptr, tlen))
525 return 1;
526 break;
527 case SFLOW_COUNTER_PROCESSOR:
528 if (print_sflow_counter_processor(ndo, tptr, tlen))
529 return 1;
530 break;
531 default:
532 if (ndo->ndo_vflag <= 1)
533 print_unknown_data(ndo, tptr, "\n\t\t", counter_len);
534 break;
535 }
536 }
537 tptr += counter_len;
538 tlen -= counter_len;
539 nrecords--;
540
541 }
542
543 return 0;
544 }
545
546
547 static int
548 sflow_print_counter_sample(netdissect_options *ndo,
549 const u_char *pointer, u_int len) {
550
551 const struct sflow_counter_sample_t *sflow_counter_sample;
552 u_int nrecords;
553 u_int typesource;
554 u_int type;
555 u_int index;
556
557
558 if (len < sizeof(struct sflow_counter_sample_t))
559 return 1;
560
561 sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer;
562
563 typesource = EXTRACT_32BITS(sflow_counter_sample->typesource);
564 nrecords = EXTRACT_32BITS(sflow_counter_sample->records);
565 type = typesource >> 24;
566 index = typesource & 0x0FFF;
567
568 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
569 EXTRACT_32BITS(sflow_counter_sample->seqnum),
570 type,
571 index,
572 nrecords));
573
574 return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_counter_sample_t),
575 len - sizeof(struct sflow_counter_sample_t),
576 nrecords);
577
578 }
579
580 static int
581 sflow_print_expanded_counter_sample(netdissect_options *ndo,
582 const u_char *pointer, u_int len) {
583
584 const struct sflow_expanded_counter_sample_t *sflow_expanded_counter_sample;
585 u_int nrecords;
586
587
588 if (len < sizeof(struct sflow_expanded_counter_sample_t))
589 return 1;
590
591 sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer;
592
593 nrecords = EXTRACT_32BITS(sflow_expanded_counter_sample->records);
594
595 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
596 EXTRACT_32BITS(sflow_expanded_counter_sample->seqnum),
597 EXTRACT_32BITS(sflow_expanded_counter_sample->type),
598 EXTRACT_32BITS(sflow_expanded_counter_sample->index),
599 nrecords));
600
601 return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_expanded_counter_sample_t),
602 len - sizeof(struct sflow_expanded_counter_sample_t),
603 nrecords);
604
605 }
606
607 static int
608 print_sflow_raw_packet(netdissect_options *ndo,
609 const u_char *pointer, u_int len) {
610
611 const struct sflow_expanded_flow_raw_t *sflow_flow_raw;
612
613 if (len < sizeof(struct sflow_expanded_flow_raw_t))
614 return 1;
615
616 sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer;
617 ND_PRINT((ndo, "\n\t protocol %s (%u), length %u, stripped bytes %u, header_size %u",
618 tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_32BITS(sflow_flow_raw->protocol)),
619 EXTRACT_32BITS(sflow_flow_raw->protocol),
620 EXTRACT_32BITS(sflow_flow_raw->length),
621 EXTRACT_32BITS(sflow_flow_raw->stripped_bytes),
622 EXTRACT_32BITS(sflow_flow_raw->header_size)));
623
624 /* QUESTION - should we attempt to print the raw header itself?
625 assuming of course there is wnough data present to do so... */
626
627 return 0;
628 }
629
630 static int
631 print_sflow_ethernet_frame(netdissect_options *ndo,
632 const u_char *pointer, u_int len) {
633
634 const struct sflow_ethernet_frame_t *sflow_ethernet_frame;
635
636 if (len < sizeof(struct sflow_ethernet_frame_t))
637 return 1;
638
639 sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer;
640
641 ND_PRINT((ndo, "\n\t frame len %u, type %u",
642 EXTRACT_32BITS(sflow_ethernet_frame->length),
643 EXTRACT_32BITS(sflow_ethernet_frame->type)));
644
645 return 0;
646 }
647
648 static int
649 print_sflow_extended_switch_data(netdissect_options *ndo,
650 const u_char *pointer, u_int len) {
651
652 const struct sflow_extended_switch_data_t *sflow_extended_sw_data;
653
654 if (len < sizeof(struct sflow_extended_switch_data_t))
655 return 1;
656
657 sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer;
658 ND_PRINT((ndo, "\n\t src vlan %u, src pri %u, dst vlan %u, dst pri %u",
659 EXTRACT_32BITS(sflow_extended_sw_data->src_vlan),
660 EXTRACT_32BITS(sflow_extended_sw_data->src_pri),
661 EXTRACT_32BITS(sflow_extended_sw_data->dst_vlan),
662 EXTRACT_32BITS(sflow_extended_sw_data->dst_pri)));
663
664 return 0;
665 }
666
667 static int
668 sflow_print_flow_records(netdissect_options *ndo,
669 const u_char *pointer, u_int len, u_int records) {
670
671 u_int nrecords;
672 const u_char *tptr;
673 u_int tlen;
674 u_int flow_type;
675 u_int enterprise;
676 u_int flow_len;
677 const struct sflow_flow_record_t *sflow_flow_record;
678
679 nrecords = records;
680 tptr = pointer;
681 tlen = len;
682
683 while (nrecords > 0) {
684 /* do we have the "header?" */
685 if (tlen < sizeof(struct sflow_flow_record_t))
686 return 1;
687
688 sflow_flow_record = (const struct sflow_flow_record_t *)tptr;
689
690 /* so, the funky encoding means we cannot blythly mask-off
691 bits, we must also check the enterprise. */
692
693 enterprise = EXTRACT_32BITS(sflow_flow_record->format);
694 flow_type = enterprise & 0x0FFF;
695 enterprise = enterprise >> 12;
696 flow_len = EXTRACT_32BITS(sflow_flow_record->length);
697 ND_PRINT((ndo, "\n\t enterprise %u %s (%u) length %u",
698 enterprise,
699 (enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown",
700 flow_type,
701 flow_len));
702
703 tptr += sizeof(struct sflow_flow_record_t);
704 tlen -= sizeof(struct sflow_flow_record_t);
705
706 if (tlen < flow_len)
707 return 1;
708
709 if (enterprise == 0) {
710 switch (flow_type) {
711 case SFLOW_FLOW_RAW_PACKET:
712 if (print_sflow_raw_packet(ndo, tptr, tlen))
713 return 1;
714 break;
715 case SFLOW_FLOW_EXTENDED_SWITCH_DATA:
716 if (print_sflow_extended_switch_data(ndo, tptr, tlen))
717 return 1;
718 break;
719 case SFLOW_FLOW_ETHERNET_FRAME:
720 if (print_sflow_ethernet_frame(ndo, tptr, tlen))
721 return 1;
722 break;
723 /* FIXME these need a decoder */
724 case SFLOW_FLOW_IPV4_DATA:
725 case SFLOW_FLOW_IPV6_DATA:
726 case SFLOW_FLOW_EXTENDED_ROUTER_DATA:
727 case SFLOW_FLOW_EXTENDED_GATEWAY_DATA:
728 case SFLOW_FLOW_EXTENDED_USER_DATA:
729 case SFLOW_FLOW_EXTENDED_URL_DATA:
730 case SFLOW_FLOW_EXTENDED_MPLS_DATA:
731 case SFLOW_FLOW_EXTENDED_NAT_DATA:
732 case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL:
733 case SFLOW_FLOW_EXTENDED_MPLS_VC:
734 case SFLOW_FLOW_EXTENDED_MPLS_FEC:
735 case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC:
736 case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL:
737 break;
738 default:
739 if (ndo->ndo_vflag <= 1)
740 print_unknown_data(ndo, tptr, "\n\t\t", flow_len);
741 break;
742 }
743 }
744 tptr += flow_len;
745 tlen -= flow_len;
746 nrecords--;
747
748 }
749
750 return 0;
751 }
752
753 static int
754 sflow_print_flow_sample(netdissect_options *ndo,
755 const u_char *pointer, u_int len) {
756
757 const struct sflow_flow_sample_t *sflow_flow_sample;
758 u_int nrecords;
759 u_int typesource;
760 u_int type;
761 u_int index;
762
763 if (len < sizeof(struct sflow_flow_sample_t))
764 return 1;
765
766 sflow_flow_sample = (struct sflow_flow_sample_t *)pointer;
767
768 typesource = EXTRACT_32BITS(sflow_flow_sample->typesource);
769 nrecords = EXTRACT_32BITS(sflow_flow_sample->records);
770 type = typesource >> 24;
771 index = typesource & 0x0FFF;
772
773 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u",
774 EXTRACT_32BITS(sflow_flow_sample->seqnum),
775 type,
776 index,
777 EXTRACT_32BITS(sflow_flow_sample->rate),
778 EXTRACT_32BITS(sflow_flow_sample->pool),
779 EXTRACT_32BITS(sflow_flow_sample->drops),
780 EXTRACT_32BITS(sflow_flow_sample->in_interface),
781 EXTRACT_32BITS(sflow_flow_sample->out_interface),
782 nrecords));
783
784 return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_flow_sample_t),
785 len - sizeof(struct sflow_flow_sample_t),
786 nrecords);
787
788 }
789
790 static int
791 sflow_print_expanded_flow_sample(netdissect_options *ndo,
792 const u_char *pointer, u_int len) {
793
794 const struct sflow_expanded_flow_sample_t *sflow_expanded_flow_sample;
795 u_int nrecords;
796
797 if (len < sizeof(struct sflow_expanded_flow_sample_t))
798 return 1;
799
800 sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer;
801
802 nrecords = EXTRACT_32BITS(sflow_expanded_flow_sample->records);
803
804 ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u",
805 EXTRACT_32BITS(sflow_expanded_flow_sample->seqnum),
806 EXTRACT_32BITS(sflow_expanded_flow_sample->type),
807 EXTRACT_32BITS(sflow_expanded_flow_sample->index),
808 EXTRACT_32BITS(sflow_expanded_flow_sample->rate),
809 EXTRACT_32BITS(sflow_expanded_flow_sample->pool),
810 EXTRACT_32BITS(sflow_expanded_flow_sample->drops),
811 EXTRACT_32BITS(sflow_expanded_flow_sample->records)));
812
813 return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_expanded_flow_sample_t),
814 len - sizeof(struct sflow_expanded_flow_sample_t),
815 nrecords);
816
817 }
818
819 void
820 sflow_print(netdissect_options *ndo,
821 const u_char *pptr, u_int len) {
822
823 const struct sflow_datagram_t *sflow_datagram;
824 const struct sflow_sample_header *sflow_sample;
825
826 const u_char *tptr;
827 u_int tlen;
828 uint32_t sflow_sample_type, sflow_sample_len;
829 uint32_t nsamples;
830
831
832 tptr = pptr;
833 tlen = len;
834 sflow_datagram = (const struct sflow_datagram_t *)pptr;
835 ND_TCHECK(*sflow_datagram);
836
837 /*
838 * Sanity checking of the header.
839 */
840 if (EXTRACT_32BITS(sflow_datagram->version) != 5) {
841 ND_PRINT((ndo, "sFlow version %u packet not supported",
842 EXTRACT_32BITS(sflow_datagram->version)));
843 return;
844 }
845
846 if (ndo->ndo_vflag < 1) {
847 ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, length %u",
848 EXTRACT_32BITS(sflow_datagram->version),
849 EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
850 ipaddr_string(ndo, sflow_datagram->agent),
851 EXTRACT_32BITS(sflow_datagram->agent_id),
852 len));
853 return;
854 }
855
856 /* ok they seem to want to know everything - lets fully decode it */
857 nsamples=EXTRACT_32BITS(sflow_datagram->samples);
858 ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u",
859 EXTRACT_32BITS(sflow_datagram->version),
860 EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
861 ipaddr_string(ndo, sflow_datagram->agent),
862 EXTRACT_32BITS(sflow_datagram->agent_id),
863 EXTRACT_32BITS(sflow_datagram->seqnum),
864 EXTRACT_32BITS(sflow_datagram->uptime),
865 nsamples,
866 len));
867
868 /* skip Common header */
869 tptr += sizeof(const struct sflow_datagram_t);
870 tlen -= sizeof(const struct sflow_datagram_t);
871
872 while (nsamples > 0 && tlen > 0) {
873 sflow_sample = (const struct sflow_sample_header *)tptr;
874 ND_TCHECK(*sflow_sample);
875
876 sflow_sample_type = (EXTRACT_32BITS(sflow_sample->format)&0x0FFF);
877 sflow_sample_len = EXTRACT_32BITS(sflow_sample->len);
878
879 if (tlen < sizeof(struct sflow_sample_header))
880 goto trunc;
881
882 tptr += sizeof(struct sflow_sample_header);
883 tlen -= sizeof(struct sflow_sample_header);
884
885 ND_PRINT((ndo, "\n\t%s (%u), length %u,",
886 tok2str(sflow_format_values, "Unknown", sflow_sample_type),
887 sflow_sample_type,
888 sflow_sample_len));
889
890 /* basic sanity check */
891 if (sflow_sample_type == 0 || sflow_sample_len ==0) {
892 return;
893 }
894
895 if (tlen < sflow_sample_len)
896 goto trunc;
897
898 /* did we capture enough for fully decoding the sample ? */
899 ND_TCHECK2(*tptr, sflow_sample_len);
900
901 switch(sflow_sample_type) {
902 case SFLOW_FLOW_SAMPLE:
903 if (sflow_print_flow_sample(ndo, tptr, tlen))
904 goto trunc;
905 break;
906
907 case SFLOW_COUNTER_SAMPLE:
908 if (sflow_print_counter_sample(ndo, tptr,tlen))
909 goto trunc;
910 break;
911
912 case SFLOW_EXPANDED_FLOW_SAMPLE:
913 if (sflow_print_expanded_flow_sample(ndo, tptr, tlen))
914 goto trunc;
915 break;
916
917 case SFLOW_EXPANDED_COUNTER_SAMPLE:
918 if (sflow_print_expanded_counter_sample(ndo, tptr,tlen))
919 goto trunc;
920 break;
921
922 default:
923 if (ndo->ndo_vflag <= 1)
924 print_unknown_data(ndo, tptr, "\n\t ", sflow_sample_len);
925 break;
926 }
927 tptr += sflow_sample_len;
928 tlen -= sflow_sample_len;
929 nsamples--;
930 }
931 return;
932
933 trunc:
934 ND_PRINT((ndo, "[|SFLOW]"));
935 }
936
937 /*
938 * Local Variables:
939 * c-style: whitesmith
940 * c-basic-offset: 4
941 * End:
942 */
[mirror] the TCPdump network dissector