The Tcpdump Group git mirrors - tcpdump/blob - 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 <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include "interface.h"
  33 #include "extract.h"
  34 #include "addrtoname.h"
  35
  36 /*
  37  * sFlow datagram
  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  * |                     Sflow version (2,4,5)                     |
  43  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  44  * |               IP version (1 for IPv4 | 2 for IPv6)            |
  45  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  46  * |                     IP Address AGENT (4 or 16 bytes)          |
  47  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  48  * |                          Sub agent ID                         |
  49  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  50  * |                      Datagram sequence number                 |
  51  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  52  * |                      Switch uptime in ms                      |
  53  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  54  * |                    num samples in datagram                    |
  55  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  56  *
  57  */
  58
  59 struct sflow_datagram_t {
  60     u_int8_t    version[4];
  61     u_int8_t    ip_version[4];
  62     u_int8_t    agent[4];
  63     u_int8_t    agent_id[4];
  64     u_int8_t    seqnum[4];
  65     u_int8_t    uptime[4];
  66     u_int8_t    samples[4];
  67 };
  68
  69 struct sflow_sample_header {
  70     u_int8_t    format[4];
  71     u_int8_t    len[4];
  72 };
  73
  74 #define         SFLOW_FLOW_SAMPLE               1
  75 #define         SFLOW_COUNTER_SAMPLE            2
  76 #define         SFLOW_EXPANDED_FLOW_SAMPLE      3
  77 #define         SFLOW_EXPANDED_COUNTER_SAMPLE   4
  78
  79 static const struct tok sflow_format_values[] = {
  80     { SFLOW_FLOW_SAMPLE, "flow sample" },
  81     { SFLOW_COUNTER_SAMPLE, "counter sample" },
  82     { SFLOW_EXPANDED_FLOW_SAMPLE, "expanded flow sample" },
  83     { SFLOW_EXPANDED_COUNTER_SAMPLE, "expanded counter sample" },
  84     { 0, NULL}
  85 };
  86
  87 struct sflow_flow_sample_t {
  88     u_int8_t    seqnum[4];
  89     u_int8_t    typesource[4];
  90     u_int8_t    rate[4];
  91     u_int8_t    pool[4];
  92     u_int8_t    drops[4];
  93     u_int8_t    in_interface[4];
  94     u_int8_t    out_interface[4];
  95     u_int8_t    records[4];
  96
  97 };
  98
  99 struct sflow_expanded_flow_sample_t {
 100     u_int8_t    seqnum[4];
 101     u_int8_t    type[4];
 102     u_int8_t    index[4];
 103     u_int8_t    rate[4];
 104     u_int8_t    pool[4];
 105     u_int8_t    drops[4];
 106     u_int8_t    in_interface_format[4];
 107     u_int8_t    in_interface_value[4];
 108     u_int8_t    out_interface_format[4];
 109     u_int8_t    out_interface_value[4];
 110     u_int8_t    records[4];
 111 };
 112
 113 #define         SFLOW_FLOW_RAW_PACKET                   1
 114 #define         SFLOW_FLOW_ETHERNET_FRAME               2
 115 #define         SFLOW_FLOW_IPV4_DATA                    3
 116 #define         SFLOW_FLOW_IPV6_DATA                    4
 117 #define         SFLOW_FLOW_EXTENDED_SWITCH_DATA         1001
 118 #define         SFLOW_FLOW_EXTENDED_ROUTER_DATA         1002
 119 #define         SFLOW_FLOW_EXTENDED_GATEWAY_DATA        1003
 120 #define         SFLOW_FLOW_EXTENDED_USER_DATA           1004
 121 #define         SFLOW_FLOW_EXTENDED_URL_DATA            1005
 122 #define         SFLOW_FLOW_EXTENDED_MPLS_DATA           1006
 123 #define         SFLOW_FLOW_EXTENDED_NAT_DATA            1007
 124 #define         SFLOW_FLOW_EXTENDED_MPLS_TUNNEL         1008
 125 #define         SFLOW_FLOW_EXTENDED_MPLS_VC             1009
 126 #define         SFLOW_FLOW_EXTENDED_MPLS_FEC            1010
 127 #define         SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC        1011
 128 #define         SFLOW_FLOW_EXTENDED_VLAN_TUNNEL         1012
 129
 130 static const struct tok sflow_flow_type_values[] = {
 131     { SFLOW_FLOW_RAW_PACKET, "Raw packet"},
 132     { SFLOW_FLOW_ETHERNET_FRAME, "Ethernet frame"},
 133     { SFLOW_FLOW_IPV4_DATA, "IPv4 Data"},
 134     { SFLOW_FLOW_IPV6_DATA, "IPv6 Data"},
 135     { SFLOW_FLOW_EXTENDED_SWITCH_DATA, "Extended Switch data"},
 136     { SFLOW_FLOW_EXTENDED_ROUTER_DATA, "Extended Router data"},
 137     { SFLOW_FLOW_EXTENDED_GATEWAY_DATA, "Extended Gateway data"},
 138     { SFLOW_FLOW_EXTENDED_USER_DATA, "Extended User data"},
 139     { SFLOW_FLOW_EXTENDED_URL_DATA, "Extended URL data"},
 140     { SFLOW_FLOW_EXTENDED_MPLS_DATA, "Extended MPLS data"},
 141     { SFLOW_FLOW_EXTENDED_NAT_DATA, "Extended NAT data"},
 142     { SFLOW_FLOW_EXTENDED_MPLS_TUNNEL, "Extended MPLS tunnel"},
 143     { SFLOW_FLOW_EXTENDED_MPLS_VC, "Extended MPLS VC"},
 144     { SFLOW_FLOW_EXTENDED_MPLS_FEC, "Extended MPLS FEC"},
 145     { SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC, "Extended MPLS LVP FEC"},
 146     { SFLOW_FLOW_EXTENDED_VLAN_TUNNEL, "Extended VLAN Tunnel"},
 147     { 0, NULL}
 148 };
 149
 150 #define         SFLOW_HEADER_PROTOCOL_ETHERNET  1
 151 #define         SFLOW_HEADER_PROTOCOL_IPV4      11
 152 #define         SFLOW_HEADER_PROTOCOL_IPV6      12
 153
 154 static const struct tok sflow_flow_raw_protocol_values[] = {
 155     { SFLOW_HEADER_PROTOCOL_ETHERNET, "Ethernet"},
 156     { SFLOW_HEADER_PROTOCOL_IPV4, "IPv4"},
 157     { SFLOW_HEADER_PROTOCOL_IPV6, "IPv6"},
 158     { 0, NULL}
 159 };
 160
 161 struct sflow_expanded_flow_raw_t {
 162     u_int8_t    protocol[4];
 163     u_int8_t    length[4];
 164     u_int8_t    stripped_bytes[4];
 165     u_int8_t    header_size[4];
 166 };
 167
 168 struct sflow_ethernet_frame_t {
 169     u_int8_t length[4];
 170     u_int8_t src_mac[8];
 171     u_int8_t dst_mac[8];
 172     u_int8_t type[4];
 173 };
 174
 175 struct sflow_extended_switch_data_t {
 176     u_int8_t src_vlan[4];
 177     u_int8_t src_pri[4];
 178     u_int8_t dst_vlan[4];
 179     u_int8_t dst_pri[4];
 180 };
 181
 182 struct sflow_counter_record_t {
 183     u_int8_t    format[4];
 184     u_int8_t    length[4];
 185 };
 186
 187 struct sflow_flow_record_t {
 188     u_int8_t    format[4];
 189     u_int8_t    length[4];
 190 };
 191
 192 struct sflow_counter_sample_t {
 193     u_int8_t    seqnum[4];
 194     u_int8_t    typesource[4];
 195     u_int8_t    records[4];
 196 };
 197
 198 struct sflow_expanded_counter_sample_t {
 199     u_int8_t    seqnum[4];
 200     u_int8_t    type[4];
 201     u_int8_t    index[4];
 202     u_int8_t    records[4];
 203 };
 204
 205 #define         SFLOW_COUNTER_GENERIC           1
 206 #define         SFLOW_COUNTER_ETHERNET          2
 207 #define         SFLOW_COUNTER_TOKEN_RING        3
 208 #define         SFLOW_COUNTER_BASEVG            4
 209 #define         SFLOW_COUNTER_VLAN              5
 210 #define         SFLOW_COUNTER_PROCESSOR         1001
 211
 212 static const struct tok sflow_counter_type_values[] = {
 213     { SFLOW_COUNTER_GENERIC, "Generic counter"},
 214     { SFLOW_COUNTER_ETHERNET, "Ethernet counter"},
 215     { SFLOW_COUNTER_TOKEN_RING, "Token ring counter"},
 216     { SFLOW_COUNTER_BASEVG, "100 BaseVG counter"},
 217     { SFLOW_COUNTER_VLAN, "Vlan counter"},
 218     { SFLOW_COUNTER_PROCESSOR, "Processor counter"},
 219     { 0, NULL}
 220 };
 221
 222 #define         SFLOW_IFACE_DIRECTION_UNKNOWN           0
 223 #define         SFLOW_IFACE_DIRECTION_FULLDUPLEX        1
 224 #define         SFLOW_IFACE_DIRECTION_HALFDUPLEX        2
 225 #define         SFLOW_IFACE_DIRECTION_IN                3
 226 #define         SFLOW_IFACE_DIRECTION_OUT               4
 227
 228 static const struct tok sflow_iface_direction_values[] = {
 229     { SFLOW_IFACE_DIRECTION_UNKNOWN, "unknown"},
 230     { SFLOW_IFACE_DIRECTION_FULLDUPLEX, "full-duplex"},
 231     { SFLOW_IFACE_DIRECTION_HALFDUPLEX, "half-duplex"},
 232     { SFLOW_IFACE_DIRECTION_IN, "in"},
 233     { SFLOW_IFACE_DIRECTION_OUT, "out"},
 234     { 0, NULL}
 235 };
 236
 237 struct sflow_generic_counter_t {
 238     u_int8_t    ifindex[4];
 239     u_int8_t    iftype[4];
 240     u_int8_t    ifspeed[8];
 241     u_int8_t    ifdirection[4];
 242     u_int8_t    ifstatus[4];
 243     u_int8_t    ifinoctets[8];
 244     u_int8_t    ifinunicastpkts[4];
 245     u_int8_t    ifinmulticastpkts[4];
 246     u_int8_t    ifinbroadcastpkts[4];
 247     u_int8_t    ifindiscards[4];
 248     u_int8_t    ifinerrors[4];
 249     u_int8_t    ifinunkownprotos[4];
 250     u_int8_t    ifoutoctets[8];
 251     u_int8_t    ifoutunicastpkts[4];
 252     u_int8_t    ifoutmulticastpkts[4];
 253     u_int8_t    ifoutbroadcastpkts[4];
 254     u_int8_t    ifoutdiscards[4];
 255     u_int8_t    ifouterrors[4];
 256     u_int8_t    ifpromiscmode[4];
 257 };
 258
 259 struct sflow_ethernet_counter_t {
 260     u_int8_t    alignerrors[4];
 261     u_int8_t    fcserrors[4];
 262     u_int8_t    single_collision_frames[4];
 263     u_int8_t    multiple_collision_frames[4];
 264     u_int8_t    test_errors[4];
 265     u_int8_t    deferred_transmissions[4];
 266     u_int8_t    late_collisions[4];
 267     u_int8_t    excessive_collisions[4];
 268     u_int8_t    mac_transmit_errors[4];
 269     u_int8_t    carrier_sense_errors[4];
 270     u_int8_t    frame_too_longs[4];
 271     u_int8_t    mac_receive_errors[4];
 272     u_int8_t    symbol_errors[4];
 273 };
 274
 275 struct sflow_100basevg_counter_t {
 276     u_int8_t    in_highpriority_frames[4];
 277     u_int8_t    in_highpriority_octets[8];
 278     u_int8_t    in_normpriority_frames[4];
 279     u_int8_t    in_normpriority_octets[8];
 280     u_int8_t    in_ipmerrors[4];
 281     u_int8_t    in_oversized[4];
 282     u_int8_t    in_data_errors[4];
 283     u_int8_t    in_null_addressed_frames[4];
 284     u_int8_t    out_highpriority_frames[4];
 285     u_int8_t    out_highpriority_octets[8];
 286     u_int8_t    transitioninto_frames[4];
 287     u_int8_t    hc_in_highpriority_octets[8];
 288     u_int8_t    hc_in_normpriority_octets[8];
 289     u_int8_t    hc_out_highpriority_octets[8];
 290 };
 291
 292 struct sflow_vlan_counter_t {
 293     u_int8_t    vlan_id[4];
 294     u_int8_t    octets[8];
 295     u_int8_t    unicast_pkt[4];
 296     u_int8_t    multicast_pkt[4];
 297     u_int8_t    broadcast_pkt[4];
 298     u_int8_t    discards[4];
 299 };
 300
 301 static int
 302 print_sflow_counter_generic(const u_char *pointer, u_int len) {
 303
 304     const struct sflow_generic_counter_t *sflow_gen_counter;
 305
 306     if (len < sizeof(struct sflow_generic_counter_t))
 307         return 1;
 308
 309
 310     sflow_gen_counter = (const struct sflow_generic_counter_t *)pointer;
 311     printf("\n\t      ifindex %u, iftype %u, ifspeed %" PRIu64 ", ifdirection %u (%s)",
 312            EXTRACT_32BITS(sflow_gen_counter->ifindex),
 313            EXTRACT_32BITS(sflow_gen_counter->iftype),
 314            EXTRACT_64BITS(sflow_gen_counter->ifspeed),
 315            EXTRACT_32BITS(sflow_gen_counter->ifdirection),
 316            tok2str(sflow_iface_direction_values, "Unknown",
 317                    EXTRACT_32BITS(sflow_gen_counter->ifdirection)));
 318     printf("\n\t      ifstatus %u, adminstatus: %s, operstatus: %s",
 319            EXTRACT_32BITS(sflow_gen_counter->ifstatus),
 320            EXTRACT_32BITS(sflow_gen_counter->ifstatus)&1 ? "up" : "down",
 321            (EXTRACT_32BITS(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down");
 322     printf("\n\t      In octets %" PRIu64
 323            ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
 324            EXTRACT_64BITS(sflow_gen_counter->ifinoctets),
 325            EXTRACT_32BITS(sflow_gen_counter->ifinunicastpkts),
 326            EXTRACT_32BITS(sflow_gen_counter->ifinmulticastpkts),
 327            EXTRACT_32BITS(sflow_gen_counter->ifinbroadcastpkts),
 328            EXTRACT_32BITS(sflow_gen_counter->ifindiscards));
 329     printf("\n\t      In errors %u, unknown protos %u",
 330            EXTRACT_32BITS(sflow_gen_counter->ifinerrors),
 331            EXTRACT_32BITS(sflow_gen_counter->ifinunkownprotos));
 332     printf("\n\t      Out octets %" PRIu64
 333            ", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
 334            EXTRACT_64BITS(sflow_gen_counter->ifoutoctets),
 335            EXTRACT_32BITS(sflow_gen_counter->ifoutunicastpkts),
 336            EXTRACT_32BITS(sflow_gen_counter->ifoutmulticastpkts),
 337            EXTRACT_32BITS(sflow_gen_counter->ifoutbroadcastpkts),
 338            EXTRACT_32BITS(sflow_gen_counter->ifoutdiscards));
 339     printf("\n\t      Out errors %u, promisc mode %u",
 340            EXTRACT_32BITS(sflow_gen_counter->ifouterrors),
 341            EXTRACT_32BITS(sflow_gen_counter->ifpromiscmode));
 342
 343     return 0;
 344 }
 345
 346 static int
 347 print_sflow_counter_ethernet(const u_char *pointer, u_int len){
 348
 349     const struct sflow_ethernet_counter_t *sflow_eth_counter;
 350
 351     if (len < sizeof(struct sflow_ethernet_counter_t))
 352         return 1;
 353
 354     sflow_eth_counter = (const struct sflow_ethernet_counter_t *)pointer;
 355     printf("\n\t      align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u",
 356            EXTRACT_32BITS(sflow_eth_counter->alignerrors),
 357            EXTRACT_32BITS(sflow_eth_counter->fcserrors),
 358            EXTRACT_32BITS(sflow_eth_counter->single_collision_frames),
 359            EXTRACT_32BITS(sflow_eth_counter->multiple_collision_frames),
 360            EXTRACT_32BITS(sflow_eth_counter->test_errors));
 361     printf("\n\t      deferred %u, late collision %u, excessive collision %u, mac trans error %u",
 362            EXTRACT_32BITS(sflow_eth_counter->deferred_transmissions),
 363            EXTRACT_32BITS(sflow_eth_counter->late_collisions),
 364            EXTRACT_32BITS(sflow_eth_counter->excessive_collisions),
 365            EXTRACT_32BITS(sflow_eth_counter->mac_transmit_errors));
 366     printf("\n\t      carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u",
 367            EXTRACT_32BITS(sflow_eth_counter->carrier_sense_errors),
 368            EXTRACT_32BITS(sflow_eth_counter->frame_too_longs),
 369            EXTRACT_32BITS(sflow_eth_counter->mac_receive_errors),
 370            EXTRACT_32BITS(sflow_eth_counter->symbol_errors));
 371
 372     return 0;
 373 }
 374
 375 static int
 376 print_sflow_counter_token_ring(const u_char *pointer _U_, u_int len _U_) {
 377
 378     return 0;
 379 }
 380
 381 static int
 382 print_sflow_counter_basevg(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     printf("\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     printf("\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     printf("\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     printf("\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     printf("\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(const u_char *pointer, u_int len) {
 418
 419     const struct sflow_vlan_counter_t *sflow_vlan_counter;
 420
 421     if (len < sizeof(struct sflow_vlan_counter_t))
 422         return 1;
 423
 424     sflow_vlan_counter = (const struct sflow_vlan_counter_t *)pointer;
 425     printf("\n\t      vlan_id %u, octets %" PRIu64
 426            ", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u",
 427            EXTRACT_32BITS(sflow_vlan_counter->vlan_id),
 428            EXTRACT_64BITS(sflow_vlan_counter->octets),
 429            EXTRACT_32BITS(sflow_vlan_counter->unicast_pkt),
 430            EXTRACT_32BITS(sflow_vlan_counter->multicast_pkt),
 431            EXTRACT_32BITS(sflow_vlan_counter->broadcast_pkt),
 432            EXTRACT_32BITS(sflow_vlan_counter->discards));
 433
 434     return 0;
 435 }
 436
 437 struct sflow_processor_counter_t {
 438     u_int8_t five_sec_util[4];
 439     u_int8_t one_min_util[4];
 440     u_int8_t five_min_util[4];
 441     u_int8_t total_memory[8];
 442     u_int8_t free_memory[8];
 443 };
 444
 445 static int
 446 print_sflow_counter_processor(const u_char *pointer, u_int len) {
 447
 448     const struct sflow_processor_counter_t *sflow_processor_counter;
 449
 450     if (len < sizeof(struct sflow_processor_counter_t))
 451         return 1;
 452
 453     sflow_processor_counter = (const struct sflow_processor_counter_t *)pointer;
 454     printf("\n\t      5sec %u, 1min %u, 5min %u, total_mem %" PRIu64
 455            ", total_mem %" PRIu64,
 456            EXTRACT_32BITS(sflow_processor_counter->five_sec_util),
 457            EXTRACT_32BITS(sflow_processor_counter->one_min_util),
 458            EXTRACT_32BITS(sflow_processor_counter->five_min_util),
 459            EXTRACT_64BITS(sflow_processor_counter->total_memory),
 460            EXTRACT_64BITS(sflow_processor_counter->free_memory));
 461
 462     return 0;
 463 }
 464
 465 static int
 466 sflow_print_counter_records(const u_char *pointer, u_int len, u_int records) {
 467
 468     u_int nrecords;
 469     const u_char *tptr;
 470     u_int tlen;
 471     u_int counter_type;
 472     u_int counter_len;
 473     u_int enterprise;
 474     const struct sflow_counter_record_t *sflow_counter_record;
 475
 476     nrecords = records;
 477     tptr = pointer;
 478     tlen = len;
 479
 480     while (nrecords > 0) {
 481         /* do we have the "header?" */
 482         if (tlen < sizeof(struct sflow_counter_record_t))
 483             return 1;
 484         sflow_counter_record = (const struct sflow_counter_record_t *)tptr;
 485
 486         enterprise = EXTRACT_32BITS(sflow_counter_record->format);
 487         counter_type = enterprise & 0x0FFF;
 488         enterprise = enterprise >> 20;
 489         counter_len  = EXTRACT_32BITS(sflow_counter_record->length);
 490         printf("\n\t    enterprise %u, %s (%u) length %u",
 491                enterprise,
 492                (enterprise == 0) ? tok2str(sflow_counter_type_values,"Unknown",counter_type) : "Unknown",
 493                counter_type,
 494                counter_len);
 495
 496         tptr += sizeof(struct sflow_counter_record_t);
 497         tlen -= sizeof(struct sflow_counter_record_t);
 498
 499         if (tlen < counter_len)
 500             return 1;
 501         if (enterprise == 0) {
 502             switch (counter_type) {
 503             case SFLOW_COUNTER_GENERIC:
 504                 if (print_sflow_counter_generic(tptr,tlen))
 505                     return 1;
 506                 break;
 507             case SFLOW_COUNTER_ETHERNET:
 508                 if (print_sflow_counter_ethernet(tptr,tlen))
 509                     return 1;
 510                 break;
 511             case SFLOW_COUNTER_TOKEN_RING:
 512                 if (print_sflow_counter_token_ring(tptr,tlen))
 513                     return 1;
 514                 break;
 515             case SFLOW_COUNTER_BASEVG:
 516                 if (print_sflow_counter_basevg(tptr,tlen))
 517                     return 1;
 518                 break;
 519             case SFLOW_COUNTER_VLAN:
 520                 if (print_sflow_counter_vlan(tptr,tlen))
 521                     return 1;
 522                 break;
 523             case SFLOW_COUNTER_PROCESSOR:
 524                 if (print_sflow_counter_processor(tptr,tlen))
 525                     return 1;
 526                 break;
 527             default:
 528                 if (vflag <= 1)
 529                     print_unknown_data(gndo,tptr, "\n\t\t", counter_len);
 530                 break;
 531             }
 532         }
 533         tptr += counter_len;
 534         tlen -= counter_len;
 535         nrecords--;
 536
 537     }
 538
 539     return 0;
 540 }
 541
 542
 543 static int
 544 sflow_print_counter_sample(const u_char *pointer, u_int len) {
 545
 546     const struct sflow_counter_sample_t *sflow_counter_sample;
 547     u_int           nrecords;
 548     u_int           typesource;
 549     u_int           type;
 550     u_int           index;
 551
 552
 553     if (len < sizeof(struct sflow_counter_sample_t))
 554         return 1;
 555
 556     sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer;
 557
 558     typesource = EXTRACT_32BITS(sflow_counter_sample->typesource);
 559     nrecords   = EXTRACT_32BITS(sflow_counter_sample->records);
 560     type = typesource >> 24;
 561     index = typesource & 0x0FFF;
 562
 563     printf(" seqnum %u, type %u, idx %u, records %u",
 564            EXTRACT_32BITS(sflow_counter_sample->seqnum),
 565            type,
 566            index,
 567            nrecords);
 568
 569     return sflow_print_counter_records(pointer + sizeof(struct sflow_counter_sample_t),
 570                                        len - sizeof(struct sflow_counter_sample_t),
 571                                        nrecords);
 572
 573 }
 574
 575 static int
 576 sflow_print_expanded_counter_sample(const u_char *pointer, u_int len) {
 577
 578     const struct sflow_expanded_counter_sample_t *sflow_expanded_counter_sample;
 579     u_int           nrecords;
 580
 581
 582     if (len < sizeof(struct sflow_expanded_counter_sample_t))
 583         return 1;
 584
 585     sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer;
 586
 587     nrecords = EXTRACT_32BITS(sflow_expanded_counter_sample->records);
 588
 589     printf(" seqnum %u, type %u, idx %u, records %u",
 590            EXTRACT_32BITS(sflow_expanded_counter_sample->seqnum),
 591            EXTRACT_32BITS(sflow_expanded_counter_sample->type),
 592            EXTRACT_32BITS(sflow_expanded_counter_sample->index),
 593            nrecords);
 594
 595     return sflow_print_counter_records(pointer + sizeof(struct sflow_expanded_counter_sample_t),
 596                                        len - sizeof(struct sflow_expanded_counter_sample_t),
 597                                        nrecords);
 598
 599 }
 600
 601 static int
 602 print_sflow_raw_packet(const u_char *pointer, u_int len) {
 603
 604     const struct sflow_expanded_flow_raw_t *sflow_flow_raw;
 605
 606     if (len < sizeof(struct sflow_expanded_flow_raw_t))
 607         return 1;
 608
 609     sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer;
 610     printf("\n\t      protocol %s (%u), length %u, stripped bytes %u, header_size %u",
 611            tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_32BITS(sflow_flow_raw->protocol)),
 612            EXTRACT_32BITS(sflow_flow_raw->protocol),
 613            EXTRACT_32BITS(sflow_flow_raw->length),
 614            EXTRACT_32BITS(sflow_flow_raw->stripped_bytes),
 615            EXTRACT_32BITS(sflow_flow_raw->header_size));
 616
 617     /* QUESTION - should we attempt to print the raw header itself?
 618        assuming of course there is wnough data present to do so... */
 619
 620     return 0;
 621 }
 622
 623 static int
 624 print_sflow_ethernet_frame(const u_char *pointer, u_int len) {
 625
 626     const struct sflow_ethernet_frame_t *sflow_ethernet_frame;
 627
 628     if (len < sizeof(struct sflow_ethernet_frame_t))
 629         return 1;
 630
 631     sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer;
 632
 633     printf("\n\t      frame len %u, type %u",
 634            EXTRACT_32BITS(sflow_ethernet_frame->length),
 635            EXTRACT_32BITS(sflow_ethernet_frame->type));
 636
 637     return 0;
 638 }
 639
 640 static int
 641 print_sflow_extended_switch_data(const u_char *pointer, u_int len) {
 642
 643     const struct sflow_extended_switch_data_t *sflow_extended_sw_data;
 644
 645     if (len < sizeof(struct sflow_extended_switch_data_t))
 646         return 1;
 647
 648     sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer;
 649     printf("\n\t      src vlan %u, src pri %u, dst vlan %u, dst pri %u",
 650            EXTRACT_32BITS(sflow_extended_sw_data->src_vlan),
 651            EXTRACT_32BITS(sflow_extended_sw_data->src_pri),
 652            EXTRACT_32BITS(sflow_extended_sw_data->dst_vlan),
 653            EXTRACT_32BITS(sflow_extended_sw_data->dst_pri));
 654
 655     return 0;
 656 }
 657
 658 static int
 659 sflow_print_flow_records(const u_char *pointer, u_int len, u_int records) {
 660
 661     u_int nrecords;
 662     const u_char *tptr;
 663     u_int tlen;
 664     u_int flow_type;
 665     u_int enterprise;
 666     u_int flow_len;
 667     const struct sflow_flow_record_t *sflow_flow_record;
 668
 669     nrecords = records;
 670     tptr = pointer;
 671     tlen = len;
 672
 673     while (nrecords > 0) {
 674         /* do we have the "header?" */
 675         if (tlen < sizeof(struct sflow_flow_record_t))
 676             return 1;
 677
 678         sflow_flow_record = (const struct sflow_flow_record_t *)tptr;
 679
 680         /* so, the funky encoding means we cannot blythly mask-off
 681            bits, we must also check the enterprise. */
 682
 683         enterprise = EXTRACT_32BITS(sflow_flow_record->format);
 684         flow_type = enterprise & 0x0FFF;
 685         enterprise = enterprise >> 12;
 686         flow_len  = EXTRACT_32BITS(sflow_flow_record->length);
 687         printf("\n\t    enterprise %u %s (%u) length %u",
 688                enterprise,
 689                (enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown",
 690                flow_type,
 691                flow_len);
 692
 693         tptr += sizeof(struct sflow_flow_record_t);
 694         tlen -= sizeof(struct sflow_flow_record_t);
 695
 696         if (tlen < flow_len)
 697             return 1;
 698
 699         if (enterprise == 0) {
 700             switch (flow_type) {
 701             case SFLOW_FLOW_RAW_PACKET:
 702                 if (print_sflow_raw_packet(tptr,tlen))
 703                     return 1;
 704                 break;
 705             case SFLOW_FLOW_EXTENDED_SWITCH_DATA:
 706                 if (print_sflow_extended_switch_data(tptr,tlen))
 707                     return 1;
 708                 break;
 709             case SFLOW_FLOW_ETHERNET_FRAME:
 710                 if (print_sflow_ethernet_frame(tptr,tlen))
 711                     return 1;
 712                 break;
 713                 /* FIXME these need a decoder */
 714             case SFLOW_FLOW_IPV4_DATA:
 715             case SFLOW_FLOW_IPV6_DATA:
 716             case SFLOW_FLOW_EXTENDED_ROUTER_DATA:
 717             case SFLOW_FLOW_EXTENDED_GATEWAY_DATA:
 718             case SFLOW_FLOW_EXTENDED_USER_DATA:
 719             case SFLOW_FLOW_EXTENDED_URL_DATA:
 720             case SFLOW_FLOW_EXTENDED_MPLS_DATA:
 721             case SFLOW_FLOW_EXTENDED_NAT_DATA:
 722             case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL:
 723             case SFLOW_FLOW_EXTENDED_MPLS_VC:
 724             case SFLOW_FLOW_EXTENDED_MPLS_FEC:
 725             case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC:
 726             case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL:
 727                 break;
 728             default:
 729                 if (vflag <= 1)
 730                     print_unknown_data(gndo,tptr, "\n\t\t", flow_len);
 731                 break;
 732             }
 733         }
 734         tptr += flow_len;
 735         tlen -= flow_len;
 736         nrecords--;
 737
 738     }
 739
 740     return 0;
 741 }
 742
 743 static int
 744 sflow_print_flow_sample(const u_char *pointer, u_int len) {
 745
 746     const struct sflow_flow_sample_t *sflow_flow_sample;
 747     u_int          nrecords;
 748     u_int          typesource;
 749     u_int          type;
 750     u_int          index;
 751
 752     if (len < sizeof(struct sflow_flow_sample_t))
 753         return 1;
 754
 755     sflow_flow_sample = (struct sflow_flow_sample_t *)pointer;
 756
 757     typesource = EXTRACT_32BITS(sflow_flow_sample->typesource);
 758     nrecords = EXTRACT_32BITS(sflow_flow_sample->records);
 759     type = typesource >> 24;
 760     index = typesource & 0x0FFF;
 761
 762     printf(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u",
 763            EXTRACT_32BITS(sflow_flow_sample->seqnum),
 764            type,
 765            index,
 766            EXTRACT_32BITS(sflow_flow_sample->rate),
 767            EXTRACT_32BITS(sflow_flow_sample->pool),
 768            EXTRACT_32BITS(sflow_flow_sample->drops),
 769            EXTRACT_32BITS(sflow_flow_sample->in_interface),
 770            EXTRACT_32BITS(sflow_flow_sample->out_interface),
 771            nrecords);
 772
 773     return sflow_print_flow_records(pointer + sizeof(struct sflow_flow_sample_t),
 774                                     len - sizeof(struct sflow_flow_sample_t),
 775                                     nrecords);
 776
 777 }
 778
 779 static int
 780 sflow_print_expanded_flow_sample(const u_char *pointer, u_int len) {
 781
 782     const struct sflow_expanded_flow_sample_t *sflow_expanded_flow_sample;
 783     u_int nrecords;
 784
 785     if (len < sizeof(struct sflow_expanded_flow_sample_t))
 786         return 1;
 787
 788     sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer;
 789
 790     nrecords = EXTRACT_32BITS(sflow_expanded_flow_sample->records);
 791
 792     printf(" seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u",
 793            EXTRACT_32BITS(sflow_expanded_flow_sample->seqnum),
 794            EXTRACT_32BITS(sflow_expanded_flow_sample->type),
 795            EXTRACT_32BITS(sflow_expanded_flow_sample->index),
 796            EXTRACT_32BITS(sflow_expanded_flow_sample->rate),
 797            EXTRACT_32BITS(sflow_expanded_flow_sample->pool),
 798            EXTRACT_32BITS(sflow_expanded_flow_sample->drops),
 799            EXTRACT_32BITS(sflow_expanded_flow_sample->records));
 800
 801     return sflow_print_flow_records(pointer + sizeof(struct sflow_expanded_flow_sample_t),
 802                                     len - sizeof(struct sflow_expanded_flow_sample_t),
 803                                     nrecords);
 804
 805 }
 806
 807 void
 808 sflow_print(const u_char *pptr, u_int len) {
 809
 810     const struct sflow_datagram_t *sflow_datagram;
 811     const struct sflow_sample_header *sflow_sample;
 812
 813     const u_char *tptr;
 814     u_int tlen;
 815     u_int32_t sflow_sample_type, sflow_sample_len;
 816     u_int32_t nsamples;
 817
 818
 819     tptr = pptr;
 820     tlen = len;
 821     sflow_datagram = (const struct sflow_datagram_t *)pptr;
 822     TCHECK(*sflow_datagram);
 823
 824     /*
 825      * Sanity checking of the header.
 826      */
 827     if (EXTRACT_32BITS(sflow_datagram->version) != 5) {
 828         printf("sFlow version %u packet not supported",
 829                EXTRACT_32BITS(sflow_datagram->version));
 830         return;
 831     }
 832
 833     if (vflag < 1) {
 834         printf("sFlowv%u, %s agent %s, agent-id %u, length %u",
 835                EXTRACT_32BITS(sflow_datagram->version),
 836                EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
 837                ipaddr_string(sflow_datagram->agent),
 838                EXTRACT_32BITS(sflow_datagram->agent_id),
 839                len);
 840         return;
 841     }
 842
 843     /* ok they seem to want to know everything - lets fully decode it */
 844     nsamples=EXTRACT_32BITS(sflow_datagram->samples);
 845     printf("sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u",
 846            EXTRACT_32BITS(sflow_datagram->version),
 847            EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
 848            ipaddr_string(sflow_datagram->agent),
 849            EXTRACT_32BITS(sflow_datagram->agent_id),
 850            EXTRACT_32BITS(sflow_datagram->seqnum),
 851            EXTRACT_32BITS(sflow_datagram->uptime),
 852            nsamples,
 853            len);
 854
 855     /* skip Common header */
 856     tptr += sizeof(const struct sflow_datagram_t);
 857     tlen -= sizeof(const struct sflow_datagram_t);
 858
 859     while (nsamples > 0 && tlen > 0) {
 860         sflow_sample = (const struct sflow_sample_header *)tptr;
 861         TCHECK(*sflow_sample);
 862
 863         sflow_sample_type = (EXTRACT_32BITS(sflow_sample->format)&0x0FFF);
 864         sflow_sample_len = EXTRACT_32BITS(sflow_sample->len);
 865
 866         if (tlen < sizeof(struct sflow_sample_header))
 867             goto trunc;
 868
 869         tptr += sizeof(struct sflow_sample_header);
 870         tlen -= sizeof(struct sflow_sample_header);
 871
 872         printf("\n\t%s (%u), length %u,",
 873                tok2str(sflow_format_values, "Unknown", sflow_sample_type),
 874                sflow_sample_type,
 875                sflow_sample_len);
 876
 877         /* basic sanity check */
 878         if (sflow_sample_type == 0 || sflow_sample_len ==0) {
 879             return;
 880         }
 881
 882         if (tlen < sflow_sample_len)
 883             goto trunc;
 884
 885         /* did we capture enough for fully decoding the sample ? */
 886         TCHECK2(*tptr, sflow_sample_len);
 887
 888         switch(sflow_sample_type) {
 889         case SFLOW_FLOW_SAMPLE:
 890             if (sflow_print_flow_sample(tptr,tlen))
 891                 goto trunc;
 892             break;
 893
 894         case SFLOW_COUNTER_SAMPLE:
 895             if (sflow_print_counter_sample(tptr,tlen))
 896                 goto trunc;
 897             break;
 898
 899         case SFLOW_EXPANDED_FLOW_SAMPLE:
 900             if (sflow_print_expanded_flow_sample(tptr,tlen))
 901                 goto trunc;
 902             break;
 903
 904         case SFLOW_EXPANDED_COUNTER_SAMPLE:
 905             if (sflow_print_expanded_counter_sample(tptr,tlen))
 906                 goto trunc;
 907             break;
 908
 909         default:
 910             if (vflag <= 1)
 911                 print_unknown_data(gndo,tptr, "\n\t    ", sflow_sample_len);
 912             break;
 913         }
 914         tptr += sflow_sample_len;
 915         tlen -= sflow_sample_len;
 916         nsamples--;
 917     }
 918     return;
 919
 920  trunc:
 921     printf("[|SFLOW]");
 922 }
 923
 924 /*
 925  * Local Variables:
 926  * c-style: whitesmith
 927  * c-basic-offset: 4
 928  * End:
 929  */