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phunix/external/bsd/tcpdump/dist/print-sflow.c
David van Moolenbroek b636d99d91 Import NetBSD tcpdump(8) 
For now, printing of Sun RPC requests is disabled because we do not
yet have the RPC header files.  This should affect basically noone,
as we do not have any RPC-based programs yet, for the same reason.

Change-Id: Ie7818faaaacdc104d8b2c37a68866b4ce18247d6
2017-03-21 22:00:21 +00:00

947 lines
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/*
* Copyright (c) 1998-2007 The TCPDUMP project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* The SFLOW protocol as per http://www.sflow.org/developers/specifications.php
*
* Original code by Carles Kishimoto <carles.kishimoto@gmail.com>
*
* Expansion and refactoring by Rick Jones <rick.jones2@hp.com>
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: print-sflow.c,v 1.6 2015/03/31 21:59:35 christos Exp $");
#endif
#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include "interface.h"
#include "extract.h"
#include "addrtoname.h"
/*
* sFlow datagram
*
* 0 1 2 3
* 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
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Sflow version (2,4,5) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | IP version (1 for IPv4 | 2 for IPv6) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | IP Address AGENT (4 or 16 bytes) |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Sub agent ID |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Datagram sequence number |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Switch uptime in ms |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | num samples in datagram |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
struct sflow_datagram_t {
uint8_t version[4];
uint8_t ip_version[4];
uint8_t agent[4];
uint8_t agent_id[4];
uint8_t seqnum[4];
uint8_t uptime[4];
uint8_t samples[4];
};
struct sflow_sample_header {
uint8_t format[4];
uint8_t len[4];
};
#define SFLOW_FLOW_SAMPLE 1
#define SFLOW_COUNTER_SAMPLE 2
#define SFLOW_EXPANDED_FLOW_SAMPLE 3
#define SFLOW_EXPANDED_COUNTER_SAMPLE 4
static const struct tok sflow_format_values[] = {
{ SFLOW_FLOW_SAMPLE, "flow sample" },
{ SFLOW_COUNTER_SAMPLE, "counter sample" },
{ SFLOW_EXPANDED_FLOW_SAMPLE, "expanded flow sample" },
{ SFLOW_EXPANDED_COUNTER_SAMPLE, "expanded counter sample" },
{ 0, NULL}
};
struct sflow_flow_sample_t {
uint8_t seqnum[4];
uint8_t typesource[4];
uint8_t rate[4];
uint8_t pool[4];
uint8_t drops[4];
uint8_t in_interface[4];
uint8_t out_interface[4];
uint8_t records[4];
};
struct sflow_expanded_flow_sample_t {
uint8_t seqnum[4];
uint8_t type[4];
uint8_t index[4];
uint8_t rate[4];
uint8_t pool[4];
uint8_t drops[4];
uint8_t in_interface_format[4];
uint8_t in_interface_value[4];
uint8_t out_interface_format[4];
uint8_t out_interface_value[4];
uint8_t records[4];
};
#define SFLOW_FLOW_RAW_PACKET 1
#define SFLOW_FLOW_ETHERNET_FRAME 2
#define SFLOW_FLOW_IPV4_DATA 3
#define SFLOW_FLOW_IPV6_DATA 4
#define SFLOW_FLOW_EXTENDED_SWITCH_DATA 1001
#define SFLOW_FLOW_EXTENDED_ROUTER_DATA 1002
#define SFLOW_FLOW_EXTENDED_GATEWAY_DATA 1003
#define SFLOW_FLOW_EXTENDED_USER_DATA 1004
#define SFLOW_FLOW_EXTENDED_URL_DATA 1005
#define SFLOW_FLOW_EXTENDED_MPLS_DATA 1006
#define SFLOW_FLOW_EXTENDED_NAT_DATA 1007
#define SFLOW_FLOW_EXTENDED_MPLS_TUNNEL 1008
#define SFLOW_FLOW_EXTENDED_MPLS_VC 1009
#define SFLOW_FLOW_EXTENDED_MPLS_FEC 1010
#define SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC 1011
#define SFLOW_FLOW_EXTENDED_VLAN_TUNNEL 1012
static const struct tok sflow_flow_type_values[] = {
{ SFLOW_FLOW_RAW_PACKET, "Raw packet"},
{ SFLOW_FLOW_ETHERNET_FRAME, "Ethernet frame"},
{ SFLOW_FLOW_IPV4_DATA, "IPv4 Data"},
{ SFLOW_FLOW_IPV6_DATA, "IPv6 Data"},
{ SFLOW_FLOW_EXTENDED_SWITCH_DATA, "Extended Switch data"},
{ SFLOW_FLOW_EXTENDED_ROUTER_DATA, "Extended Router data"},
{ SFLOW_FLOW_EXTENDED_GATEWAY_DATA, "Extended Gateway data"},
{ SFLOW_FLOW_EXTENDED_USER_DATA, "Extended User data"},
{ SFLOW_FLOW_EXTENDED_URL_DATA, "Extended URL data"},
{ SFLOW_FLOW_EXTENDED_MPLS_DATA, "Extended MPLS data"},
{ SFLOW_FLOW_EXTENDED_NAT_DATA, "Extended NAT data"},
{ SFLOW_FLOW_EXTENDED_MPLS_TUNNEL, "Extended MPLS tunnel"},
{ SFLOW_FLOW_EXTENDED_MPLS_VC, "Extended MPLS VC"},
{ SFLOW_FLOW_EXTENDED_MPLS_FEC, "Extended MPLS FEC"},
{ SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC, "Extended MPLS LVP FEC"},
{ SFLOW_FLOW_EXTENDED_VLAN_TUNNEL, "Extended VLAN Tunnel"},
{ 0, NULL}
};
#define SFLOW_HEADER_PROTOCOL_ETHERNET 1
#define SFLOW_HEADER_PROTOCOL_IPV4 11
#define SFLOW_HEADER_PROTOCOL_IPV6 12
static const struct tok sflow_flow_raw_protocol_values[] = {
{ SFLOW_HEADER_PROTOCOL_ETHERNET, "Ethernet"},
{ SFLOW_HEADER_PROTOCOL_IPV4, "IPv4"},
{ SFLOW_HEADER_PROTOCOL_IPV6, "IPv6"},
{ 0, NULL}
};
struct sflow_expanded_flow_raw_t {
uint8_t protocol[4];
uint8_t length[4];
uint8_t stripped_bytes[4];
uint8_t header_size[4];
};
struct sflow_ethernet_frame_t {
uint8_t length[4];
uint8_t src_mac[8];
uint8_t dst_mac[8];
uint8_t type[4];
};
struct sflow_extended_switch_data_t {
uint8_t src_vlan[4];
uint8_t src_pri[4];
uint8_t dst_vlan[4];
uint8_t dst_pri[4];
};
struct sflow_counter_record_t {
uint8_t format[4];
uint8_t length[4];
};
struct sflow_flow_record_t {
uint8_t format[4];
uint8_t length[4];
};
struct sflow_counter_sample_t {
uint8_t seqnum[4];
uint8_t typesource[4];
uint8_t records[4];
};
struct sflow_expanded_counter_sample_t {
uint8_t seqnum[4];
uint8_t type[4];
uint8_t index[4];
uint8_t records[4];
};
#define SFLOW_COUNTER_GENERIC 1
#define SFLOW_COUNTER_ETHERNET 2
#define SFLOW_COUNTER_TOKEN_RING 3
#define SFLOW_COUNTER_BASEVG 4
#define SFLOW_COUNTER_VLAN 5
#define SFLOW_COUNTER_PROCESSOR 1001
static const struct tok sflow_counter_type_values[] = {
{ SFLOW_COUNTER_GENERIC, "Generic counter"},
{ SFLOW_COUNTER_ETHERNET, "Ethernet counter"},
{ SFLOW_COUNTER_TOKEN_RING, "Token ring counter"},
{ SFLOW_COUNTER_BASEVG, "100 BaseVG counter"},
{ SFLOW_COUNTER_VLAN, "Vlan counter"},
{ SFLOW_COUNTER_PROCESSOR, "Processor counter"},
{ 0, NULL}
};
#define SFLOW_IFACE_DIRECTION_UNKNOWN 0
#define SFLOW_IFACE_DIRECTION_FULLDUPLEX 1
#define SFLOW_IFACE_DIRECTION_HALFDUPLEX 2
#define SFLOW_IFACE_DIRECTION_IN 3
#define SFLOW_IFACE_DIRECTION_OUT 4
static const struct tok sflow_iface_direction_values[] = {
{ SFLOW_IFACE_DIRECTION_UNKNOWN, "unknown"},
{ SFLOW_IFACE_DIRECTION_FULLDUPLEX, "full-duplex"},
{ SFLOW_IFACE_DIRECTION_HALFDUPLEX, "half-duplex"},
{ SFLOW_IFACE_DIRECTION_IN, "in"},
{ SFLOW_IFACE_DIRECTION_OUT, "out"},
{ 0, NULL}
};
struct sflow_generic_counter_t {
uint8_t ifindex[4];
uint8_t iftype[4];
uint8_t ifspeed[8];
uint8_t ifdirection[4];
uint8_t ifstatus[4];
uint8_t ifinoctets[8];
uint8_t ifinunicastpkts[4];
uint8_t ifinmulticastpkts[4];
uint8_t ifinbroadcastpkts[4];
uint8_t ifindiscards[4];
uint8_t ifinerrors[4];
uint8_t ifinunkownprotos[4];
uint8_t ifoutoctets[8];
uint8_t ifoutunicastpkts[4];
uint8_t ifoutmulticastpkts[4];
uint8_t ifoutbroadcastpkts[4];
uint8_t ifoutdiscards[4];
uint8_t ifouterrors[4];
uint8_t ifpromiscmode[4];
};
struct sflow_ethernet_counter_t {
uint8_t alignerrors[4];
uint8_t fcserrors[4];
uint8_t single_collision_frames[4];
uint8_t multiple_collision_frames[4];
uint8_t test_errors[4];
uint8_t deferred_transmissions[4];
uint8_t late_collisions[4];
uint8_t excessive_collisions[4];
uint8_t mac_transmit_errors[4];
uint8_t carrier_sense_errors[4];
uint8_t frame_too_longs[4];
uint8_t mac_receive_errors[4];
uint8_t symbol_errors[4];
};
struct sflow_100basevg_counter_t {
uint8_t in_highpriority_frames[4];
uint8_t in_highpriority_octets[8];
uint8_t in_normpriority_frames[4];
uint8_t in_normpriority_octets[8];
uint8_t in_ipmerrors[4];
uint8_t in_oversized[4];
uint8_t in_data_errors[4];
uint8_t in_null_addressed_frames[4];
uint8_t out_highpriority_frames[4];
uint8_t out_highpriority_octets[8];
uint8_t transitioninto_frames[4];
uint8_t hc_in_highpriority_octets[8];
uint8_t hc_in_normpriority_octets[8];
uint8_t hc_out_highpriority_octets[8];
};
struct sflow_vlan_counter_t {
uint8_t vlan_id[4];
uint8_t octets[8];
uint8_t unicast_pkt[4];
uint8_t multicast_pkt[4];
uint8_t broadcast_pkt[4];
uint8_t discards[4];
};
static int
print_sflow_counter_generic(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_generic_counter_t *sflow_gen_counter;
if (len < sizeof(struct sflow_generic_counter_t))
return 1;
sflow_gen_counter = (const struct sflow_generic_counter_t *)pointer;
ND_PRINT((ndo, "\n\t ifindex %u, iftype %u, ifspeed %" PRIu64 ", ifdirection %u (%s)",
EXTRACT_32BITS(sflow_gen_counter->ifindex),
EXTRACT_32BITS(sflow_gen_counter->iftype),
EXTRACT_64BITS(sflow_gen_counter->ifspeed),
EXTRACT_32BITS(sflow_gen_counter->ifdirection),
tok2str(sflow_iface_direction_values, "Unknown",
EXTRACT_32BITS(sflow_gen_counter->ifdirection))));
ND_PRINT((ndo, "\n\t ifstatus %u, adminstatus: %s, operstatus: %s",
EXTRACT_32BITS(sflow_gen_counter->ifstatus),
EXTRACT_32BITS(sflow_gen_counter->ifstatus)&1 ? "up" : "down",
(EXTRACT_32BITS(sflow_gen_counter->ifstatus)>>1)&1 ? "up" : "down"));
ND_PRINT((ndo, "\n\t In octets %" PRIu64
", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
EXTRACT_64BITS(sflow_gen_counter->ifinoctets),
EXTRACT_32BITS(sflow_gen_counter->ifinunicastpkts),
EXTRACT_32BITS(sflow_gen_counter->ifinmulticastpkts),
EXTRACT_32BITS(sflow_gen_counter->ifinbroadcastpkts),
EXTRACT_32BITS(sflow_gen_counter->ifindiscards)));
ND_PRINT((ndo, "\n\t In errors %u, unknown protos %u",
EXTRACT_32BITS(sflow_gen_counter->ifinerrors),
EXTRACT_32BITS(sflow_gen_counter->ifinunkownprotos)));
ND_PRINT((ndo, "\n\t Out octets %" PRIu64
", unicast pkts %u, multicast pkts %u, broadcast pkts %u, discards %u",
EXTRACT_64BITS(sflow_gen_counter->ifoutoctets),
EXTRACT_32BITS(sflow_gen_counter->ifoutunicastpkts),
EXTRACT_32BITS(sflow_gen_counter->ifoutmulticastpkts),
EXTRACT_32BITS(sflow_gen_counter->ifoutbroadcastpkts),
EXTRACT_32BITS(sflow_gen_counter->ifoutdiscards)));
ND_PRINT((ndo, "\n\t Out errors %u, promisc mode %u",
EXTRACT_32BITS(sflow_gen_counter->ifouterrors),
EXTRACT_32BITS(sflow_gen_counter->ifpromiscmode)));
return 0;
}
static int
print_sflow_counter_ethernet(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_ethernet_counter_t *sflow_eth_counter;
if (len < sizeof(struct sflow_ethernet_counter_t))
return 1;
sflow_eth_counter = (const struct sflow_ethernet_counter_t *)pointer;
ND_PRINT((ndo, "\n\t align errors %u, fcs errors %u, single collision %u, multiple collision %u, test error %u",
EXTRACT_32BITS(sflow_eth_counter->alignerrors),
EXTRACT_32BITS(sflow_eth_counter->fcserrors),
EXTRACT_32BITS(sflow_eth_counter->single_collision_frames),
EXTRACT_32BITS(sflow_eth_counter->multiple_collision_frames),
EXTRACT_32BITS(sflow_eth_counter->test_errors)));
ND_PRINT((ndo, "\n\t deferred %u, late collision %u, excessive collision %u, mac trans error %u",
EXTRACT_32BITS(sflow_eth_counter->deferred_transmissions),
EXTRACT_32BITS(sflow_eth_counter->late_collisions),
EXTRACT_32BITS(sflow_eth_counter->excessive_collisions),
EXTRACT_32BITS(sflow_eth_counter->mac_transmit_errors)));
ND_PRINT((ndo, "\n\t carrier error %u, frames too long %u, mac receive errors %u, symbol errors %u",
EXTRACT_32BITS(sflow_eth_counter->carrier_sense_errors),
EXTRACT_32BITS(sflow_eth_counter->frame_too_longs),
EXTRACT_32BITS(sflow_eth_counter->mac_receive_errors),
EXTRACT_32BITS(sflow_eth_counter->symbol_errors)));
return 0;
}
static int
print_sflow_counter_token_ring(netdissect_options *ndo _U_,
const u_char *pointer _U_, u_int len _U_)
{
return 0;
}
static int
print_sflow_counter_basevg(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_100basevg_counter_t *sflow_100basevg_counter;
if (len < sizeof(struct sflow_100basevg_counter_t))
return 1;
sflow_100basevg_counter = (const struct sflow_100basevg_counter_t *)pointer;
ND_PRINT((ndo, "\n\t in high prio frames %u, in high prio octets %" PRIu64,
EXTRACT_32BITS(sflow_100basevg_counter->in_highpriority_frames),
EXTRACT_64BITS(sflow_100basevg_counter->in_highpriority_octets)));
ND_PRINT((ndo, "\n\t in norm prio frames %u, in norm prio octets %" PRIu64,
EXTRACT_32BITS(sflow_100basevg_counter->in_normpriority_frames),
EXTRACT_64BITS(sflow_100basevg_counter->in_normpriority_octets)));
ND_PRINT((ndo, "\n\t in ipm errors %u, oversized %u, in data errors %u, null addressed frames %u",
EXTRACT_32BITS(sflow_100basevg_counter->in_ipmerrors),
EXTRACT_32BITS(sflow_100basevg_counter->in_oversized),
EXTRACT_32BITS(sflow_100basevg_counter->in_data_errors),
EXTRACT_32BITS(sflow_100basevg_counter->in_null_addressed_frames)));
ND_PRINT((ndo, "\n\t out high prio frames %u, out high prio octets %" PRIu64
", trans into frames %u",
EXTRACT_32BITS(sflow_100basevg_counter->out_highpriority_frames),
EXTRACT_64BITS(sflow_100basevg_counter->out_highpriority_octets),
EXTRACT_32BITS(sflow_100basevg_counter->transitioninto_frames)));
ND_PRINT((ndo, "\n\t in hc high prio octets %" PRIu64
", in hc norm prio octets %" PRIu64
", out hc high prio octets %" PRIu64,
EXTRACT_64BITS(sflow_100basevg_counter->hc_in_highpriority_octets),
EXTRACT_64BITS(sflow_100basevg_counter->hc_in_normpriority_octets),
EXTRACT_64BITS(sflow_100basevg_counter->hc_out_highpriority_octets)));
return 0;
}
static int
print_sflow_counter_vlan(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_vlan_counter_t *sflow_vlan_counter;
if (len < sizeof(struct sflow_vlan_counter_t))
return 1;
sflow_vlan_counter = (const struct sflow_vlan_counter_t *)pointer;
ND_PRINT((ndo, "\n\t vlan_id %u, octets %" PRIu64
", unicast_pkt %u, multicast_pkt %u, broadcast_pkt %u, discards %u",
EXTRACT_32BITS(sflow_vlan_counter->vlan_id),
EXTRACT_64BITS(sflow_vlan_counter->octets),
EXTRACT_32BITS(sflow_vlan_counter->unicast_pkt),
EXTRACT_32BITS(sflow_vlan_counter->multicast_pkt),
EXTRACT_32BITS(sflow_vlan_counter->broadcast_pkt),
EXTRACT_32BITS(sflow_vlan_counter->discards)));
return 0;
}
struct sflow_processor_counter_t {
uint8_t five_sec_util[4];
uint8_t one_min_util[4];
uint8_t five_min_util[4];
uint8_t total_memory[8];
uint8_t free_memory[8];
};
static int
print_sflow_counter_processor(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_processor_counter_t *sflow_processor_counter;
if (len < sizeof(struct sflow_processor_counter_t))
return 1;
sflow_processor_counter = (const struct sflow_processor_counter_t *)pointer;
ND_PRINT((ndo, "\n\t 5sec %u, 1min %u, 5min %u, total_mem %" PRIu64
", total_mem %" PRIu64,
EXTRACT_32BITS(sflow_processor_counter->five_sec_util),
EXTRACT_32BITS(sflow_processor_counter->one_min_util),
EXTRACT_32BITS(sflow_processor_counter->five_min_util),
EXTRACT_64BITS(sflow_processor_counter->total_memory),
EXTRACT_64BITS(sflow_processor_counter->free_memory)));
return 0;
}
static int
sflow_print_counter_records(netdissect_options *ndo,
const u_char *pointer, u_int len, u_int records)
{
u_int nrecords;
const u_char *tptr;
u_int tlen;
u_int counter_type;
u_int counter_len;
u_int enterprise;
const struct sflow_counter_record_t *sflow_counter_record;
nrecords = records;
tptr = pointer;
tlen = len;
while (nrecords > 0) {
/* do we have the "header?" */
if (tlen < sizeof(struct sflow_counter_record_t))
return 1;
sflow_counter_record = (const struct sflow_counter_record_t *)tptr;
enterprise = EXTRACT_32BITS(sflow_counter_record->format);
counter_type = enterprise & 0x0FFF;
enterprise = enterprise >> 20;
counter_len = EXTRACT_32BITS(sflow_counter_record->length);
ND_PRINT((ndo, "\n\t enterprise %u, %s (%u) length %u",
enterprise,
(enterprise == 0) ? tok2str(sflow_counter_type_values,"Unknown",counter_type) : "Unknown",
counter_type,
counter_len));
tptr += sizeof(struct sflow_counter_record_t);
tlen -= sizeof(struct sflow_counter_record_t);
if (tlen < counter_len)
return 1;
if (enterprise == 0) {
switch (counter_type) {
case SFLOW_COUNTER_GENERIC:
if (print_sflow_counter_generic(ndo, tptr, tlen))
return 1;
break;
case SFLOW_COUNTER_ETHERNET:
if (print_sflow_counter_ethernet(ndo, tptr, tlen))
return 1;
break;
case SFLOW_COUNTER_TOKEN_RING:
if (print_sflow_counter_token_ring(ndo, tptr,tlen))
return 1;
break;
case SFLOW_COUNTER_BASEVG:
if (print_sflow_counter_basevg(ndo, tptr, tlen))
return 1;
break;
case SFLOW_COUNTER_VLAN:
if (print_sflow_counter_vlan(ndo, tptr, tlen))
return 1;
break;
case SFLOW_COUNTER_PROCESSOR:
if (print_sflow_counter_processor(ndo, tptr, tlen))
return 1;
break;
default:
if (ndo->ndo_vflag <= 1)
print_unknown_data(ndo, tptr, "\n\t\t", counter_len);
break;
}
}
tptr += counter_len;
tlen -= counter_len;
nrecords--;
}
return 0;
}
static int
sflow_print_counter_sample(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_counter_sample_t *sflow_counter_sample;
u_int nrecords;
u_int typesource;
u_int type;
u_int index;
if (len < sizeof(struct sflow_counter_sample_t))
return 1;
sflow_counter_sample = (const struct sflow_counter_sample_t *)pointer;
typesource = EXTRACT_32BITS(sflow_counter_sample->typesource);
nrecords = EXTRACT_32BITS(sflow_counter_sample->records);
type = typesource >> 24;
index = typesource & 0x0FFF;
ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
EXTRACT_32BITS(sflow_counter_sample->seqnum),
type,
index,
nrecords));
return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_counter_sample_t),
len - sizeof(struct sflow_counter_sample_t),
nrecords);
}
static int
sflow_print_expanded_counter_sample(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_expanded_counter_sample_t *sflow_expanded_counter_sample;
u_int nrecords;
if (len < sizeof(struct sflow_expanded_counter_sample_t))
return 1;
sflow_expanded_counter_sample = (const struct sflow_expanded_counter_sample_t *)pointer;
nrecords = EXTRACT_32BITS(sflow_expanded_counter_sample->records);
ND_PRINT((ndo, " seqnum %u, type %u, idx %u, records %u",
EXTRACT_32BITS(sflow_expanded_counter_sample->seqnum),
EXTRACT_32BITS(sflow_expanded_counter_sample->type),
EXTRACT_32BITS(sflow_expanded_counter_sample->index),
nrecords));
return sflow_print_counter_records(ndo, pointer + sizeof(struct sflow_expanded_counter_sample_t),
len - sizeof(struct sflow_expanded_counter_sample_t),
nrecords);
}
static int
print_sflow_raw_packet(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_expanded_flow_raw_t *sflow_flow_raw;
if (len < sizeof(struct sflow_expanded_flow_raw_t))
return 1;
sflow_flow_raw = (const struct sflow_expanded_flow_raw_t *)pointer;
ND_PRINT((ndo, "\n\t protocol %s (%u), length %u, stripped bytes %u, header_size %u",
tok2str(sflow_flow_raw_protocol_values,"Unknown",EXTRACT_32BITS(sflow_flow_raw->protocol)),
EXTRACT_32BITS(sflow_flow_raw->protocol),
EXTRACT_32BITS(sflow_flow_raw->length),
EXTRACT_32BITS(sflow_flow_raw->stripped_bytes),
EXTRACT_32BITS(sflow_flow_raw->header_size)));
/* QUESTION - should we attempt to print the raw header itself?
assuming of course there is wnough data present to do so... */
return 0;
}
static int
print_sflow_ethernet_frame(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_ethernet_frame_t *sflow_ethernet_frame;
if (len < sizeof(struct sflow_ethernet_frame_t))
return 1;
sflow_ethernet_frame = (const struct sflow_ethernet_frame_t *)pointer;
ND_PRINT((ndo, "\n\t frame len %u, type %u",
EXTRACT_32BITS(sflow_ethernet_frame->length),
EXTRACT_32BITS(sflow_ethernet_frame->type)));
return 0;
}
static int
print_sflow_extended_switch_data(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_extended_switch_data_t *sflow_extended_sw_data;
if (len < sizeof(struct sflow_extended_switch_data_t))
return 1;
sflow_extended_sw_data = (const struct sflow_extended_switch_data_t *)pointer;
ND_PRINT((ndo, "\n\t src vlan %u, src pri %u, dst vlan %u, dst pri %u",
EXTRACT_32BITS(sflow_extended_sw_data->src_vlan),
EXTRACT_32BITS(sflow_extended_sw_data->src_pri),
EXTRACT_32BITS(sflow_extended_sw_data->dst_vlan),
EXTRACT_32BITS(sflow_extended_sw_data->dst_pri)));
return 0;
}
static int
sflow_print_flow_records(netdissect_options *ndo,
const u_char *pointer, u_int len, u_int records)
{
u_int nrecords;
const u_char *tptr;
u_int tlen;
u_int flow_type;
u_int enterprise;
u_int flow_len;
const struct sflow_flow_record_t *sflow_flow_record;
nrecords = records;
tptr = pointer;
tlen = len;
while (nrecords > 0) {
/* do we have the "header?" */
if (tlen < sizeof(struct sflow_flow_record_t))
return 1;
sflow_flow_record = (const struct sflow_flow_record_t *)tptr;
/* so, the funky encoding means we cannot blythly mask-off
bits, we must also check the enterprise. */
enterprise = EXTRACT_32BITS(sflow_flow_record->format);
flow_type = enterprise & 0x0FFF;
enterprise = enterprise >> 12;
flow_len = EXTRACT_32BITS(sflow_flow_record->length);
ND_PRINT((ndo, "\n\t enterprise %u %s (%u) length %u",
enterprise,
(enterprise == 0) ? tok2str(sflow_flow_type_values,"Unknown",flow_type) : "Unknown",
flow_type,
flow_len));
tptr += sizeof(struct sflow_flow_record_t);
tlen -= sizeof(struct sflow_flow_record_t);
if (tlen < flow_len)
return 1;
if (enterprise == 0) {
switch (flow_type) {
case SFLOW_FLOW_RAW_PACKET:
if (print_sflow_raw_packet(ndo, tptr, tlen))
return 1;
break;
case SFLOW_FLOW_EXTENDED_SWITCH_DATA:
if (print_sflow_extended_switch_data(ndo, tptr, tlen))
return 1;
break;
case SFLOW_FLOW_ETHERNET_FRAME:
if (print_sflow_ethernet_frame(ndo, tptr, tlen))
return 1;
break;
/* FIXME these need a decoder */
case SFLOW_FLOW_IPV4_DATA:
case SFLOW_FLOW_IPV6_DATA:
case SFLOW_FLOW_EXTENDED_ROUTER_DATA:
case SFLOW_FLOW_EXTENDED_GATEWAY_DATA:
case SFLOW_FLOW_EXTENDED_USER_DATA:
case SFLOW_FLOW_EXTENDED_URL_DATA:
case SFLOW_FLOW_EXTENDED_MPLS_DATA:
case SFLOW_FLOW_EXTENDED_NAT_DATA:
case SFLOW_FLOW_EXTENDED_MPLS_TUNNEL:
case SFLOW_FLOW_EXTENDED_MPLS_VC:
case SFLOW_FLOW_EXTENDED_MPLS_FEC:
case SFLOW_FLOW_EXTENDED_MPLS_LVP_FEC:
case SFLOW_FLOW_EXTENDED_VLAN_TUNNEL:
break;
default:
if (ndo->ndo_vflag <= 1)
print_unknown_data(ndo, tptr, "\n\t\t", flow_len);
break;
}
}
tptr += flow_len;
tlen -= flow_len;
nrecords--;
}
return 0;
}
static int
sflow_print_flow_sample(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_flow_sample_t *sflow_flow_sample;
u_int nrecords;
u_int typesource;
u_int type;
u_int index;
if (len < sizeof(struct sflow_flow_sample_t))
return 1;
sflow_flow_sample = (struct sflow_flow_sample_t *)pointer;
typesource = EXTRACT_32BITS(sflow_flow_sample->typesource);
nrecords = EXTRACT_32BITS(sflow_flow_sample->records);
type = typesource >> 24;
index = typesource & 0x0FFF;
ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, input %u output %u records %u",
EXTRACT_32BITS(sflow_flow_sample->seqnum),
type,
index,
EXTRACT_32BITS(sflow_flow_sample->rate),
EXTRACT_32BITS(sflow_flow_sample->pool),
EXTRACT_32BITS(sflow_flow_sample->drops),
EXTRACT_32BITS(sflow_flow_sample->in_interface),
EXTRACT_32BITS(sflow_flow_sample->out_interface),
nrecords));
return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_flow_sample_t),
len - sizeof(struct sflow_flow_sample_t),
nrecords);
}
static int
sflow_print_expanded_flow_sample(netdissect_options *ndo,
const u_char *pointer, u_int len)
{
const struct sflow_expanded_flow_sample_t *sflow_expanded_flow_sample;
u_int nrecords;
if (len < sizeof(struct sflow_expanded_flow_sample_t))
return 1;
sflow_expanded_flow_sample = (const struct sflow_expanded_flow_sample_t *)pointer;
nrecords = EXTRACT_32BITS(sflow_expanded_flow_sample->records);
ND_PRINT((ndo, " seqnum %u, type %u, idx %u, rate %u, pool %u, drops %u, records %u",
EXTRACT_32BITS(sflow_expanded_flow_sample->seqnum),
EXTRACT_32BITS(sflow_expanded_flow_sample->type),
EXTRACT_32BITS(sflow_expanded_flow_sample->index),
EXTRACT_32BITS(sflow_expanded_flow_sample->rate),
EXTRACT_32BITS(sflow_expanded_flow_sample->pool),
EXTRACT_32BITS(sflow_expanded_flow_sample->drops),
EXTRACT_32BITS(sflow_expanded_flow_sample->records)));
return sflow_print_flow_records(ndo, pointer + sizeof(struct sflow_expanded_flow_sample_t),
len - sizeof(struct sflow_expanded_flow_sample_t),
nrecords);
}
void
sflow_print(netdissect_options *ndo,
const u_char *pptr, u_int len)
{
const struct sflow_datagram_t *sflow_datagram;
const struct sflow_sample_header *sflow_sample;
const u_char *tptr;
u_int tlen;
uint32_t sflow_sample_type, sflow_sample_len;
uint32_t nsamples;
tptr = pptr;
tlen = len;
sflow_datagram = (const struct sflow_datagram_t *)pptr;
ND_TCHECK(*sflow_datagram);
/*
* Sanity checking of the header.
*/
if (EXTRACT_32BITS(sflow_datagram->version) != 5) {
ND_PRINT((ndo, "sFlow version %u packet not supported",
EXTRACT_32BITS(sflow_datagram->version)));
return;
}
if (ndo->ndo_vflag < 1) {
ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, length %u",
EXTRACT_32BITS(sflow_datagram->version),
EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
ipaddr_string(ndo, sflow_datagram->agent),
EXTRACT_32BITS(sflow_datagram->agent_id),
len));
return;
}
/* ok they seem to want to know everything - lets fully decode it */
nsamples=EXTRACT_32BITS(sflow_datagram->samples);
ND_PRINT((ndo, "sFlowv%u, %s agent %s, agent-id %u, seqnum %u, uptime %u, samples %u, length %u",
EXTRACT_32BITS(sflow_datagram->version),
EXTRACT_32BITS(sflow_datagram->ip_version) == 1 ? "IPv4" : "IPv6",
ipaddr_string(ndo, sflow_datagram->agent),
EXTRACT_32BITS(sflow_datagram->agent_id),
EXTRACT_32BITS(sflow_datagram->seqnum),
EXTRACT_32BITS(sflow_datagram->uptime),
nsamples,
len));
/* skip Common header */
tptr += sizeof(const struct sflow_datagram_t);
tlen -= sizeof(const struct sflow_datagram_t);
while (nsamples > 0 && tlen > 0) {
sflow_sample = (const struct sflow_sample_header *)tptr;
ND_TCHECK(*sflow_sample);
sflow_sample_type = (EXTRACT_32BITS(sflow_sample->format)&0x0FFF);
sflow_sample_len = EXTRACT_32BITS(sflow_sample->len);
if (tlen < sizeof(struct sflow_sample_header))
goto trunc;
tptr += sizeof(struct sflow_sample_header);
tlen -= sizeof(struct sflow_sample_header);
ND_PRINT((ndo, "\n\t%s (%u), length %u,",
tok2str(sflow_format_values, "Unknown", sflow_sample_type),
sflow_sample_type,
sflow_sample_len));
/* basic sanity check */
if (sflow_sample_type == 0 || sflow_sample_len ==0) {
return;
}
if (tlen < sflow_sample_len)
goto trunc;
/* did we capture enough for fully decoding the sample ? */
ND_TCHECK2(*tptr, sflow_sample_len);
switch(sflow_sample_type) {
case SFLOW_FLOW_SAMPLE:
if (sflow_print_flow_sample(ndo, tptr, tlen))
goto trunc;
break;
case SFLOW_COUNTER_SAMPLE:
if (sflow_print_counter_sample(ndo, tptr,tlen))
goto trunc;
break;
case SFLOW_EXPANDED_FLOW_SAMPLE:
if (sflow_print_expanded_flow_sample(ndo, tptr, tlen))
goto trunc;
break;
case SFLOW_EXPANDED_COUNTER_SAMPLE:
if (sflow_print_expanded_counter_sample(ndo, tptr,tlen))
goto trunc;
break;
default:
if (ndo->ndo_vflag <= 1)
print_unknown_data(ndo, tptr, "\n\t ", sflow_sample_len);
break;
}
tptr += sflow_sample_len;
tlen -= sflow_sample_len;
nsamples--;
}
return;
trunc:
ND_PRINT((ndo, "[|SFLOW]"));
}
/*
* Local Variables:
* c-style: whitesmith
* c-basic-offset: 4
* End:
*/
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