contrib/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 static int
 547 sflow_print_counter_sample(netdissect_options *ndo,
 548                            const u_char *pointer, u_int len)
 549 {
 550     const struct sflow_counter_sample_t *sflow_counter_sample;
 551     u_int           nrecords;
 552     u_int           typesource;
 553     u_int           type;
 554     u_int           index;
 555
 556
 557     if (len < sizeof(struct sflow_counter_sample_t))
 558         return 1;
 559
 560     sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer;
 561
 562     typesource = EXTRACT_32BITS(sflow_counter_sample->typesource);
 563     nrecords   = EXTRACT_32BITS(sflow_counter_sample->records);
 564     type = typesource >> 24;
 565     index = typesource & 0x0FFF;
 566
 567     ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
 568            EXTRACT_32BITS(sflow_counter_sample->seqnum),
 569            type,
 570            index,
 571            nrecords));
 572
 573     return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_counter_sample_t),
 574                                        len - sizeof(struct sflow_counter_sample_t),
 575                                        nrecords);
 576
 577 }
 578
 579 static int
 580 sflow_print_expanded_counter_sample(netdissect_options *ndo,
 581                                     const u_char *pointer, u_int len)
 582 {
 583     const struct sflow_expanded_counter_sample_t *sflow_expanded_counter_sample;
 584     u_int           nrecords;
 585
 586
 587     if (len < sizeof(struct sflow_expanded_counter_sample_t))
 588         return 1;
 589
 590     sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer;
 591
 592     nrecords = EXTRACT_32BITS(sflow_expanded_counter_sample->records);
 593
 594     ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
 595            EXTRACT_32BITS(sflow_expanded_counter_sample->seqnum),
 596            EXTRACT_32BITS(sflow_expanded_counter_sample->type),
 597            EXTRACT_32BITS(sflow_expanded_counter_sample->index),
 598            nrecords));
 599
 600     return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_expanded_counter_sample_t),
 601                                        len - sizeof(struct sflow_expanded_counter_sample_t),
 602                                        nrecords);
 603
 604 }
 605
 606 static int
 607 print_sflow_raw_packet(netdissect_options *ndo,
 608                        const u_char *pointer, u_int len)
 609 {
 610     const struct sflow_expanded_flow_raw_t *sflow_flow_raw;
 611
 612     if (len < sizeof(struct sflow_expanded_flow_raw_t))
 613         return 1;
 614
 615     sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer;
 616     ND_PRINT((ndo, "\n\t      protocol %s (%u), length %u, stripped bytes %u, header_size %u",
 617            tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_32BITS(sflow_flow_raw->protocol)),
 618            EXTRACT_32BITS(sflow_flow_raw->protocol),
 619            EXTRACT_32BITS(sflow_flow_raw->length),
 620            EXTRACT_32BITS(sflow_flow_raw->stripped_bytes),
 621            EXTRACT_32BITS(sflow_flow_raw->header_size)));
 622
 623     /* QUESTION - should we attempt to print the raw header itself?
 624        assuming of course there is wnough data present to do so... */
 625
 626     return 0;
 627 }
 628
 629 static int
 630 print_sflow_ethernet_frame(netdissect_options *ndo,
 631                            const u_char *pointer, u_int len)
 632 {
 633     const struct sflow_ethernet_frame_t *sflow_ethernet_frame;
 634
 635     if (len < sizeof(struct sflow_ethernet_frame_t))
 636         return 1;
 637
 638     sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer;
 639
 640     ND_PRINT((ndo, "\n\t      frame len %u, type %u",
 641            EXTRACT_32BITS(sflow_ethernet_frame->length),
 642            EXTRACT_32BITS(sflow_ethernet_frame->type)));
 643
 644     return 0;
 645 }
 646
 647 static int
 648 print_sflow_extended_switch_data(netdissect_options *ndo,
 649                                  const u_char *pointer, u_int len)
 650 {
 651     const struct sflow_extended_switch_data_t *sflow_extended_sw_data;
 652
 653     if (len < sizeof(struct sflow_extended_switch_data_t))
 654         return 1;
 655
 656     sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer;
 657     ND_PRINT((ndo, "\n\t      src vlan %u, src pri %u, dst vlan %u, dst pri %u",
 658            EXTRACT_32BITS(sflow_extended_sw_data->src_vlan),
 659            EXTRACT_32BITS(sflow_extended_sw_data->src_pri),
 660            EXTRACT_32BITS(sflow_extended_sw_data->dst_vlan),
 661            EXTRACT_32BITS(sflow_extended_sw_data->dst_pri)));
 662
 663     return 0;
 664 }
 665
 666 static int
 667 sflow_print_flow_records(netdissect_options *ndo,
 668                          const u_char *pointer, u_int len, u_int records)
 669 {
 670     u_int nrecords;
 671     const u_char *tptr;
 672     u_int tlen;
 673     u_int flow_type;
 674     u_int enterprise;
 675     u_int flow_len;
 676     const struct sflow_flow_record_t *sflow_flow_record;
 677
 678     nrecords = records;
 679     tptr = pointer;
 680     tlen = len;
 681
 682     while (nrecords > 0) {
 683         /* do we have the "header?" */
 684         if (tlen < sizeof(struct sflow_flow_record_t))
 685             return 1;
 686
 687         sflow_flow_record = (const struct sflow_flow_record_t *)tptr;
 688
 689         /* so, the funky encoding means we cannot blythly mask-off
 690            bits, we must also check the enterprise. */
 691
 692         enterprise = EXTRACT_32BITS(sflow_flow_record->format);
 693         flow_type = enterprise & 0x0FFF;
 694         enterprise = enterprise >> 12;
 695         flow_len  = EXTRACT_32BITS(sflow_flow_record->length);
 696         ND_PRINT((ndo, "\n\t    enterprise %u %s (%u) length %u",
 697                enterprise,
 698                (enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown",
 699                flow_type,
 700                flow_len));
 701
 702         tptr += sizeof(struct sflow_flow_record_t);
 703         tlen -= sizeof(struct sflow_flow_record_t);
 704
 705         if (tlen < flow_len)
 706             return 1;
 707
 708         if (enterprise == 0) {
 709             switch (flow_type) {
 710             case SFLOW_FLOW_RAW_PACKET:
 711                 if (print_sflow_raw_packet(ndo, tptr, tlen))
 712                     return 1;
 713                 break;
 714             case SFLOW_FLOW_EXTENDED_SWITCH_DATA:
 715                 if (print_sflow_extended_switch_data(ndo, tptr, tlen))
 716                     return 1;
 717                 break;
 718             case SFLOW_FLOW_ETHERNET_FRAME:
 719                 if (print_sflow_ethernet_frame(ndo, tptr, tlen))
 720                     return 1;
 721                 break;
 722                 /* FIXME these need a decoder */
 723             case SFLOW_FLOW_IPV4_DATA:
 724             case SFLOW_FLOW_IPV6_DATA:
 725             case SFLOW_FLOW_EXTENDED_ROUTER_DATA:
 726             case SFLOW_FLOW_EXTENDED_GATEWAY_DATA:
 727             case SFLOW_FLOW_EXTENDED_USER_DATA:
 728             case SFLOW_FLOW_EXTENDED_URL_DATA:
 729             case SFLOW_FLOW_EXTENDED_MPLS_DATA:
 730             case SFLOW_FLOW_EXTENDED_NAT_DATA:
 731             case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL:
 732             case SFLOW_FLOW_EXTENDED_MPLS_VC:
 733             case SFLOW_FLOW_EXTENDED_MPLS_FEC:
 734             case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC:
 735             case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL:
 736                 break;
 737             default:
 738                 if (ndo->ndo_vflag <= 1)
 739                     print_unknown_data(ndo, tptr, "\n\t\t", flow_len);
 740                 break;
 741             }
 742         }
 743         tptr += flow_len;
 744         tlen -= flow_len;
 745         nrecords--;
 746
 747     }
 748
 749     return 0;
 750 }
 751
 752 static int
 753 sflow_print_flow_sample(netdissect_options *ndo,
 754                         const u_char *pointer, u_int len)
 755 {
 756     const struct sflow_flow_sample_t *sflow_flow_sample;
 757     u_int          nrecords;
 758     u_int          typesource;
 759     u_int          type;
 760     u_int          index;
 761
 762     if (len < sizeof(struct sflow_flow_sample_t))
 763         return 1;
 764
 765     sflow_flow_sample = (struct sflow_flow_sample_t *)pointer;
 766
 767     typesource = EXTRACT_32BITS(sflow_flow_sample->typesource);
 768     nrecords = EXTRACT_32BITS(sflow_flow_sample->records);
 769     type = typesource >> 24;
 770     index = typesource & 0x0FFF;
 771
 772     ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u",
 773            EXTRACT_32BITS(sflow_flow_sample->seqnum),
 774            type,
 775            index,
 776            EXTRACT_32BITS(sflow_flow_sample->rate),
 777            EXTRACT_32BITS(sflow_flow_sample->pool),
 778            EXTRACT_32BITS(sflow_flow_sample->drops),
 779            EXTRACT_32BITS(sflow_flow_sample->in_interface),
 780            EXTRACT_32BITS(sflow_flow_sample->out_interface),
 781            nrecords));
 782
 783     return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_flow_sample_t),
 784                                     len - sizeof(struct sflow_flow_sample_t),
 785                                     nrecords);
 786
 787 }
 788
 789 static int
 790 sflow_print_expanded_flow_sample(netdissect_options *ndo,
 791                                  const u_char *pointer, u_int len)
 792 {
 793     const struct sflow_expanded_flow_sample_t *sflow_expanded_flow_sample;
 794     u_int nrecords;
 795
 796     if (len < sizeof(struct sflow_expanded_flow_sample_t))
 797         return 1;
 798
 799     sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer;
 800
 801     nrecords = EXTRACT_32BITS(sflow_expanded_flow_sample->records);
 802
 803     ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u",
 804            EXTRACT_32BITS(sflow_expanded_flow_sample->seqnum),
 805            EXTRACT_32BITS(sflow_expanded_flow_sample->type),
 806            EXTRACT_32BITS(sflow_expanded_flow_sample->index),
 807            EXTRACT_32BITS(sflow_expanded_flow_sample->rate),
 808            EXTRACT_32BITS(sflow_expanded_flow_sample->pool),
 809            EXTRACT_32BITS(sflow_expanded_flow_sample->drops),
 810            EXTRACT_32BITS(sflow_expanded_flow_sample->records)));
 811
 812     return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_expanded_flow_sample_t),
 813                                     len - sizeof(struct sflow_expanded_flow_sample_t),
 814                                     nrecords);
 815
 816 }
 817
 818 void
 819 sflow_print(netdissect_options *ndo,
 820             const u_char *pptr, u_int len)
 821 {
 822     const struct sflow_datagram_t *sflow_datagram;
 823     const struct sflow_sample_header *sflow_sample;
 824
 825     const u_char *tptr;
 826     u_int tlen;
 827     uint32_t sflow_sample_type, sflow_sample_len;
 828     uint32_t nsamples;
 829
 830
 831     tptr = pptr;
 832     tlen = len;
 833     sflow_datagram = (const struct sflow_datagram_t *)pptr;
 834     ND_TCHECK(*sflow_datagram);
 835
 836     /*
 837      * Sanity checking of the header.
 838      */
 839     if (EXTRACT_32BITS(sflow_datagram->version) != 5) {
 840         ND_PRINT((ndo, "sFlow version %u packet not supported",
 841                EXTRACT_32BITS(sflow_datagram->version)));
 842         return;
 843     }
 844
 845     if (ndo->ndo_vflag < 1) {
 846         ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, length %u",
 847                EXTRACT_32BITS(sflow_datagram->version),
 848                EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
 849                ipaddr_string(ndo, sflow_datagram->agent),
 850                EXTRACT_32BITS(sflow_datagram->agent_id),
 851                len));
 852         return;
 853     }
 854
 855     /* ok they seem to want to know everything - lets fully decode it */
 856     nsamples=EXTRACT_32BITS(sflow_datagram->samples);
 857     ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u",
 858            EXTRACT_32BITS(sflow_datagram->version),
 859            EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
 860            ipaddr_string(ndo, sflow_datagram->agent),
 861            EXTRACT_32BITS(sflow_datagram->agent_id),
 862            EXTRACT_32BITS(sflow_datagram->seqnum),
 863            EXTRACT_32BITS(sflow_datagram->uptime),
 864            nsamples,
 865            len));
 866
 867     /* skip Common header */
 868     tptr += sizeof(const struct sflow_datagram_t);
 869     tlen -= sizeof(const struct sflow_datagram_t);
 870
 871     while (nsamples > 0 && tlen > 0) {
 872         sflow_sample = (const struct sflow_sample_header *)tptr;
 873         ND_TCHECK(*sflow_sample);
 874
 875         sflow_sample_type = (EXTRACT_32BITS(sflow_sample->format)&0x0FFF);
 876         sflow_sample_len = EXTRACT_32BITS(sflow_sample->len);
 877
 878         if (tlen < sizeof(struct sflow_sample_header))
 879             goto trunc;
 880
 881         tptr += sizeof(struct sflow_sample_header);
 882         tlen -= sizeof(struct sflow_sample_header);
 883
 884         ND_PRINT((ndo, "\n\t%s (%u), length %u,",
 885                tok2str(sflow_format_values, "Unknown", sflow_sample_type),
 886                sflow_sample_type,
 887                sflow_sample_len));
 888
 889         /* basic sanity check */
 890         if (sflow_sample_type == 0 || sflow_sample_len ==0) {
 891             return;
 892         }
 893
 894         if (tlen < sflow_sample_len)
 895             goto trunc;
 896
 897         /* did we capture enough for fully decoding the sample ? */
 898         ND_TCHECK2(*tptr, sflow_sample_len);
 899
 900         switch(sflow_sample_type) {
 901         case SFLOW_FLOW_SAMPLE:
 902             if (sflow_print_flow_sample(ndo, tptr, tlen))
 903                 goto trunc;
 904             break;
 905
 906         case SFLOW_COUNTER_SAMPLE:
 907             if (sflow_print_counter_sample(ndo, tptr,tlen))
 908                 goto trunc;
 909             break;
 910
 911         case SFLOW_EXPANDED_FLOW_SAMPLE:
 912             if (sflow_print_expanded_flow_sample(ndo, tptr, tlen))
 913                 goto trunc;
 914             break;
 915
 916         case SFLOW_EXPANDED_COUNTER_SAMPLE:
 917             if (sflow_print_expanded_counter_sample(ndo, tptr,tlen))
 918                 goto trunc;
 919             break;
 920
 921         default:
 922             if (ndo->ndo_vflag <= 1)
 923                 print_unknown_data(ndo, tptr, "\n\t    ", sflow_sample_len);
 924             break;
 925         }
 926         tptr += sflow_sample_len;
 927         tlen -= sflow_sample_len;
 928         nsamples--;
 929     }
 930     return;
 931
 932  trunc:
 933     ND_PRINT((ndo, "[|SFLOW]"));
 934 }
 935
 936 /*
 937  * Local Variables:
 938  * c-style: whitesmith
 939  * c-basic-offset: 4
 940  * End:
 941  */