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ipfix.c
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ipfix.c
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/*
* Copyright 2002 Damien Miller <djm@mindrot.org> All rights reserved.
* Copyright 2012 Hitoshi Irino <irino@sfc.wide.ad.jp> All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "common.h"
#include "log.h"
#include "treetype.h"
#include "softflowd.h"
#include "netflow9.h"
#include "ipfix.h"
#include "psamp.h"
const struct IPFIX_FIELD_SPECIFIER field_v4[] = {
{IPFIX_sourceIPv4Address, 4},
{IPFIX_destinationIPv4Address, 4}
};
const struct IPFIX_FIELD_SPECIFIER field_v6[] = {
{IPFIX_sourceIPv6Address, 16},
{IPFIX_destinationIPv6Address, 16}
};
const struct IPFIX_FIELD_SPECIFIER field_common[] = {
{IPFIX_octetDeltaCount, 4},
{IPFIX_packetDeltaCount, 4},
{IPFIX_ingressInterface, 4},
{IPFIX_egressInterface, 4},
{IPFIX_flowDirection, 1},
{IPFIX_flowEndReason, 1},
#ifdef ENABLE_IFNAME
{IPFIX_interfaceName, IFNAMSIZ}
#endif
};
const struct IPFIX_FIELD_SPECIFIER field_transport[] = {
{IPFIX_sourceTransportPort, 2},
{IPFIX_destinationTransportPort, 2},
{IPFIX_protocolIdentifier, 1},
{IPFIX_tcpControlBits, 1},
{IPFIX_ipVersion, 1},
{IPFIX_ipClassOfService, 1}
};
const struct IPFIX_FIELD_SPECIFIER field_icmp4[] = {
{IPFIX_icmpTypeCodeIPv4, 2},
{IPFIX_protocolIdentifier, 1},
{IPFIX_ipVersion, 1},
{IPFIX_ipClassOfService, 1}
};
const struct IPFIX_FIELD_SPECIFIER field_icmp6[] = {
{IPFIX_icmpTypeCodeIPv6, 2},
{IPFIX_protocolIdentifier, 1},
{IPFIX_ipVersion, 1},
{IPFIX_ipClassOfService, 1}
};
const struct IPFIX_FIELD_SPECIFIER field_vlan[] = {
{IPFIX_vlanId, 2},
{IPFIX_postVlanId, 2}
};
const struct IPFIX_FIELD_SPECIFIER field_ether[] = {
{IPFIX_sourceMacAddress, 6},
{IPFIX_postDestinationMacAddress, 6}
};
const struct IPFIX_FIELD_SPECIFIER field_timesec[] = {
{IPFIX_flowStartSeconds, 4},
{IPFIX_flowEndSeconds, 4}
};
const struct IPFIX_FIELD_SPECIFIER field_timemsec[] = {
{IPFIX_flowStartMilliSeconds, 8},
{IPFIX_flowEndMilliSeconds, 8}
};
const struct IPFIX_FIELD_SPECIFIER field_timeusec[] = {
{IPFIX_flowStartMicroSeconds, 8},
{IPFIX_flowEndMicroSeconds, 8}
};
const struct IPFIX_FIELD_SPECIFIER field_timensec[] = {
{IPFIX_flowStartNanoSeconds, 8},
{IPFIX_flowEndNanoSeconds, 8}
};
const struct IPFIX_FIELD_SPECIFIER field_timesysup[] = {
{IPFIX_flowStartSysUpTime, 4},
{IPFIX_flowEndSysUpTime, 4}
};
const struct IPFIX_FIELD_SPECIFIER field_bicommon[] = {
{IPFIX_octetDeltaCount, 4},
{IPFIX_packetDeltaCount, 4},
{IPFIX_ipClassOfService, 1}
};
const struct IPFIX_FIELD_SPECIFIER field_bitransport[] =
{ {IPFIX_tcpControlBits, 1} };
const struct IPFIX_FIELD_SPECIFIER field_biicmp4[] =
{ {IPFIX_icmpTypeCodeIPv4, 2} };
const struct IPFIX_FIELD_SPECIFIER field_biicmp6[] =
{ {IPFIX_icmpTypeCodeIPv6, 2} };
const struct IPFIX_FIELD_SPECIFIER field_scope[] =
{ {IPFIX_meteringProcessId, 4} };
const struct IPFIX_FIELD_SPECIFIER field_option[] = {
{IPFIX_systemInitTimeMilliseconds, 8},
{PSAMP_samplingPacketInterval, 4},
{PSAMP_samplingPacketSpace, 4},
{PSAMP_selectorAlgorithm, 2},
{IPFIX_interfaceName, IFNAMSIZ},
{IPFIX_exporterIPv4Address, 4},
{IPFIX_exporterIPv6Address, 16},
{IPFIX_originalExporterIPv4Address, 4},
{IPFIX_originalExporterIPv6Address, 16}
};
const struct IPFIX_FIELD_SPECIFIER field_nf9scope[] =
{ {NFLOW9_OPTION_SCOPE_INTERFACE, 4} };
const struct IPFIX_FIELD_SPECIFIER field_nf9option[] = {
{NFLOW9_SAMPLING_INTERVAL, 4},
{NFLOW9_SAMPLING_ALGORITHM, 1},
{IPFIX_interfaceName, IFNAMSIZ}
};
/* Stuff pertaining to the templates that softflowd uses */
#define IPFIX_SOFTFLOWD_TEMPLATE_IPRECORDS \
sizeof(field_v4) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS \
sizeof(field_timesysup) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_COMMONRECORDS \
sizeof(field_common) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_TRANSPORTRECORDS \
sizeof(field_transport) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_ICMPRECORDS \
sizeof(field_icmp4) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_VLANRECORDS \
sizeof(field_vlan) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_ETHERRECORDS \
sizeof(field_ether) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_BICOMMONRECORDS \
sizeof(field_bicommon) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_BITRANSPORTRECORDS \
sizeof(field_bitransport) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_BIICMPRECORDS \
sizeof(field_biicmp4) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_TEMPLATE_NRECORDS \
IPFIX_SOFTFLOWD_TEMPLATE_IPRECORDS + \
IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS + \
IPFIX_SOFTFLOWD_TEMPLATE_COMMONRECORDS + \
IPFIX_SOFTFLOWD_TEMPLATE_TRANSPORTRECORDS + \
IPFIX_SOFTFLOWD_TEMPLATE_VLANRECORDS + \
IPFIX_SOFTFLOWD_TEMPLATE_ETHERRECORDS
#define IPFIX_SOFTFLOWD_TEMPLATE_BI_NRECORDS \
IPFIX_SOFTFLOWD_TEMPLATE_BICOMMONRECORDS + \
IPFIX_SOFTFLOWD_TEMPLATE_BITRANSPORTRECORDS
struct IPFIX_SOFTFLOWD_TEMPLATE {
struct IPFIX_TEMPLATE_SET_HEADER h;
struct IPFIX_FIELD_SPECIFIER r[IPFIX_SOFTFLOWD_TEMPLATE_NRECORDS];
struct IPFIX_VENDOR_FIELD_SPECIFIER
v[IPFIX_SOFTFLOWD_TEMPLATE_BI_NRECORDS];
u_int16_t data_len, bi_count;
} __packed;
#define IPFIX_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS \
sizeof(field_scope) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define IPFIX_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS \
sizeof(field_option) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define NFLOW9_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS \
sizeof(field_nf9scope) / sizeof(struct IPFIX_FIELD_SPECIFIER)
#define NFLOW9_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS \
sizeof(field_nf9option) / sizeof(struct IPFIX_FIELD_SPECIFIER)
struct IPFIX_SOFTFLOWD_OPTION_TEMPLATE {
struct IPFIX_OPTION_TEMPLATE_SET_HEADER h;
struct IPFIX_FIELD_SPECIFIER
s[IPFIX_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS];
struct IPFIX_FIELD_SPECIFIER r[IPFIX_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS];
} __packed;
/* softflowd data set */
struct IPFIX_SOFTFLOWD_DATA_COMMON {
u_int32_t octetDeltaCount, packetDeltaCount;
u_int32_t ingressInterface, egressInterface;
u_int8_t flowDirection, flowEndReason;
#ifdef ENABLE_IFNAME
char interfaceName[IFNAMSIZ];
#endif
} __packed;
struct IPFIX_SOFTFLOWD_DATA_TRANSPORT {
u_int16_t sourceTransportPort, destinationTransportPort;
u_int8_t protocolIdentifier, tcpControlBits, ipVersion, ipClassOfService;
} __packed;
struct IPFIX_SOFTFLOWD_DATA_ICMP {
u_int16_t icmpTypeCode;
u_int8_t protocolIdentifier, ipVersion, ipClassOfService;
} __packed;
struct IPFIX_SOFTFLOWD_DATA_VLAN {
u_int16_t vlanId, postVlanId;
} __packed;
struct IPFIX_SOFTFLOWD_DATA_ETHER {
u_int8_t sourceMacAddress[6], destinationMacAddress[6];
} __packed;
struct IPFIX_SOFTFLOWD_DATA_BICOMMON {
u_int32_t octetDeltaCount, packetDeltaCount;
u_int8_t ipClassOfService;
} __packed;
struct IPFIX_SOFTFLOWD_DATA_BITRANSPORT {
u_int8_t tcpControlBits;
} __packed;
struct IPFIX_SOFTFLOWD_DATA_BIICMP {
u_int16_t icmpTypeCode;
} __packed;
union IPFIX_SOFTFLOWD_DATA_TIME {
struct {
u_int32_t start;
u_int32_t end;
} u32;
struct {
u_int64_t start;
u_int64_t end;
} u64;
};
struct IPFIX_SOFTFLOWD_DATA_V4ADDR {
u_int32_t sourceIPv4Address, destinationIPv4Address;
} __packed;
struct IPFIX_SOFTFLOWD_DATA_V6ADDR {
struct in6_addr sourceIPv6Address, destinationIPv6Address;
} __packed;
struct IPFIX_SOFTFLOWD_OPTION_DATA {
struct IPFIX_SET_HEADER c;
u_int32_t scope_pid;
u_int64_t systemInitTimeMilliseconds;
u_int32_t samplingInterval;
u_int32_t samplingSpace;
u_int16_t samplingAlgorithm;
char interfaceName[IFNAMSIZ];
u_int32_t exporterIPv4Address;
struct in6_addr exporterIPv6Address;
u_int32_t originalExporterIPv4Address;
struct in6_addr originalExporterIPv6Address;
} __packed;
struct NFLOW9_SOFTFLOWD_OPTION_DATA {
struct IPFIX_SET_HEADER c;
u_int32_t scope_ifidx;
u_int32_t samplingInterval;
u_int8_t samplingAlgorithm;
char interfaceName[IFNAMSIZ];
} __packed;
/* Local data: templates and counters */
#define IPFIX_SOFTFLOWD_MAX_PACKET_SIZE 1428
#define IPFIX_SOFTFLOWD_V4_TEMPLATE_ID 1024
#define IPFIX_SOFTFLOWD_ICMPV4_TEMPLATE_ID 1025
#define IPFIX_SOFTFLOWD_V6_TEMPLATE_ID 2048
#define IPFIX_SOFTFLOWD_ICMPV6_TEMPLATE_ID 2049
#define IPFIX_SOFTFLOWD_OPTION_TEMPLATE_ID 256
#define IPFIX_DEFAULT_TEMPLATE_INTERVAL 16
/* ... */
#define IPFIX_OPTION_SCOPE_SYSTEM 1
#define IPFIX_OPTION_SCOPE_INTERFACE 2
#define IPFIX_OPTION_SCOPE_LINECARD 3
#define IPFIX_OPTION_SCOPE_CACHE 4
#define IPFIX_OPTION_SCOPE_TEMPLATE 5
/* ... */
#define IPFIX_SAMPLING_ALGORITHM_DETERMINISTIC 1
#define IPFIX_SAMPLING_ALGORITHM_RANDOM 2
/* ... */
// prototype
void memcpy_template (u_char * packet, u_int * offset,
struct IPFIX_SOFTFLOWD_TEMPLATE *template,
u_int8_t bi_flag, u_int8_t max_num_label);
// variables
enum { TMPLV4, TMPLICMPV4, TMPLV6, TMPLICMPV6, TMPLMAX };
static struct IPFIX_SOFTFLOWD_TEMPLATE templates[TMPLMAX];
static struct IPFIX_SOFTFLOWD_OPTION_TEMPLATE option_template;
static struct IPFIX_SOFTFLOWD_OPTION_DATA option_data;
static struct NFLOW9_SOFTFLOWD_OPTION_DATA nf9opt_data;
static int ipfix_pkts_until_template = -1;
int
ipfix_init_fields (struct IPFIX_FIELD_SPECIFIER *dst,
u_int * index,
const struct IPFIX_FIELD_SPECIFIER *src,
u_int field_number) {
int i, length = 0;
for (i = 0; i < field_number; i++) {
dst[*index + i].ie = htons (src[i].ie);
dst[*index + i].length = htons (src[i].length);
length += src[i].length;
}
*index += field_number;
return length;
}
void
conv_unix_to_ntp (struct timeval tv, struct ntp_time_t *ntp) {
if (ntp == NULL)
return;
ntp->second = tv.tv_sec + 0x83AA7E80;
ntp->fraction =
(uint32_t) ((double) (tv.tv_usec + 1) * (double) (1LL << 32) * 1.0e-6);
}
void
conv_ntp_to_unix (struct ntp_time_t ntp, struct timeval *tv) {
if (tv == NULL)
return;
tv->tv_sec = ntp.second - 0x83AA7E80; // the seconds from Jan 1, 1900 to Jan 1, 1970
tv->tv_usec =
(uint32_t) ((double) ntp.fraction * 1.0e6 / (double) (1LL << 32));
}
static int
ipfix_init_bifields (struct IPFIX_SOFTFLOWD_TEMPLATE *template,
u_int * index,
const struct IPFIX_FIELD_SPECIFIER *fields,
u_int field_number) {
int i, length = 0;
for (i = 0; i < field_number; i++) {
template->v[*index + i].ie = htons (fields[i].ie | 0x8000);
template->v[*index + i].length = htons (fields[i].length);
template->v[*index + i].pen = htonl (REVERSE_PEN);
length += fields[i].length;
}
*index += field_number;
return length;
}
static int
ipfix_init_template_time (struct FLOWTRACKPARAMETERS *param,
struct IPFIX_SOFTFLOWD_TEMPLATE *template,
u_int * index) {
int length = 0;
if (param->time_format == 's') {
length = ipfix_init_fields (template->r, index,
field_timesec,
IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS);
} else if (param->time_format == 'm') {
length = ipfix_init_fields (template->r, index,
field_timemsec,
IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS);
} else if (param->time_format == 'M') {
length = ipfix_init_fields (template->r, index,
field_timeusec,
IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS);
} else if (param->time_format == 'n') {
length = ipfix_init_fields (template->r, index,
field_timensec,
IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS);
} else {
length = ipfix_init_fields (template->r, index,
field_timesysup,
IPFIX_SOFTFLOWD_TEMPLATE_TIMERECORDS);
}
return length;
}
static void
ipfix_init_template_unity (struct FLOWTRACKPARAMETERS *param,
struct IPFIX_SOFTFLOWD_TEMPLATE *template,
u_int template_id, u_int8_t v6_flag,
u_int8_t icmp_flag, u_int8_t bi_flag,
u_int16_t version) {
u_int index = 0, bi_index = 0, length = 0;
memset (template, 0, sizeof (*template));
template->h.c.set_id = htons (version == 10 ?
IPFIX_TEMPLATE_SET_ID :
NFLOW9_TEMPLATE_SET_ID);
template->h.r.template_id = htons (template_id);
if (v6_flag) {
length += ipfix_init_fields (template->r, &index,
field_v6,
IPFIX_SOFTFLOWD_TEMPLATE_IPRECORDS);
} else {
length += ipfix_init_fields (template->r, &index,
field_v4,
IPFIX_SOFTFLOWD_TEMPLATE_IPRECORDS);
}
length += ipfix_init_template_time (param, template, &index);
length += ipfix_init_fields (template->r, &index,
field_common,
IPFIX_SOFTFLOWD_TEMPLATE_COMMONRECORDS);
if (icmp_flag) {
if (v6_flag) {
length += ipfix_init_fields (template->r, &index,
field_icmp6,
IPFIX_SOFTFLOWD_TEMPLATE_ICMPRECORDS);
} else {
length += ipfix_init_fields (template->r, &index,
field_icmp4,
IPFIX_SOFTFLOWD_TEMPLATE_ICMPRECORDS);
}
} else {
length += ipfix_init_fields (template->r, &index,
field_transport,
IPFIX_SOFTFLOWD_TEMPLATE_TRANSPORTRECORDS);
}
if (param->track_level >= TRACK_FULL_VLAN) {
length += ipfix_init_fields (template->r, &index,
field_vlan,
IPFIX_SOFTFLOWD_TEMPLATE_VLANRECORDS);
}
if (param->track_level >= TRACK_FULL_VLAN_ETHER) {
length += ipfix_init_fields (template->r, &index,
field_ether,
IPFIX_SOFTFLOWD_TEMPLATE_ETHERRECORDS);
}
if (bi_flag) {
length +=
ipfix_init_bifields (template, &bi_index,
field_bicommon,
IPFIX_SOFTFLOWD_TEMPLATE_BICOMMONRECORDS);
if (icmp_flag) {
if (v6_flag) {
length +=
ipfix_init_bifields (template, &bi_index,
field_biicmp6,
IPFIX_SOFTFLOWD_TEMPLATE_BIICMPRECORDS);
} else {
length +=
ipfix_init_bifields (template, &bi_index,
field_biicmp4,
IPFIX_SOFTFLOWD_TEMPLATE_BIICMPRECORDS);
}
} else {
length +=
ipfix_init_bifields (template, &bi_index,
field_bitransport,
IPFIX_SOFTFLOWD_TEMPLATE_BITRANSPORTRECORDS);
}
}
template->bi_count = bi_index;
template->h.r.count = htons (index + bi_index + param->max_num_label); // mpls
template->h.c.length =
htons (sizeof (struct IPFIX_TEMPLATE_SET_HEADER) +
index * sizeof (struct IPFIX_FIELD_SPECIFIER) +
bi_index * sizeof (struct IPFIX_VENDOR_FIELD_SPECIFIER) +
param->max_num_label * sizeof (struct IPFIX_FIELD_SPECIFIER));
template->data_len =
length + param->max_num_label * IPFIX_mplsLabelStackSection_SIZE;
}
static void
ipfix_init_template (struct FLOWTRACKPARAMETERS *param,
u_int8_t bi_flag, u_int16_t version) {
u_int8_t v6_flag = 0, icmp_flag = 0;
u_int16_t template_id = 0;
int i = 0;
for (i = 0; i < TMPLMAX; i++) {
switch (i) {
case TMPLV4:
v6_flag = 0;
icmp_flag = 0;
template_id = IPFIX_SOFTFLOWD_V4_TEMPLATE_ID;
break;
case TMPLICMPV4:
v6_flag = 0;
icmp_flag = 1;
template_id = IPFIX_SOFTFLOWD_ICMPV4_TEMPLATE_ID;
break;
case TMPLV6:
v6_flag = 1;
icmp_flag = 0;
template_id = IPFIX_SOFTFLOWD_V6_TEMPLATE_ID;
break;
case TMPLICMPV6:
v6_flag = 1;
icmp_flag = 1;
template_id = IPFIX_SOFTFLOWD_ICMPV6_TEMPLATE_ID;
break;
}
ipfix_init_template_unity (param, &templates[i],
template_id, v6_flag,
icmp_flag, bi_flag, version);
}
}
static void
nflow9_init_option (u_int16_t ifidx, struct OPTION *option) {
u_int scope_index = 0, option_index = 0;
u_int16_t scope_len =
NFLOW9_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS *
sizeof (struct IPFIX_FIELD_SPECIFIER);
u_int16_t opt_len =
NFLOW9_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS *
sizeof (struct IPFIX_FIELD_SPECIFIER);
memset (&option_template, 0, sizeof (option_template));
option_template.h.c.set_id = htons (NFLOW9_OPTION_TEMPLATE_SET_ID);
option_template.h.c.length =
htons (sizeof (option_template.h) + scope_len + opt_len);
option_template.h.u.n.template_id =
htons (IPFIX_SOFTFLOWD_OPTION_TEMPLATE_ID);
option_template.h.u.n.scope_length = htons (scope_len);
option_template.h.u.n.option_length = htons (opt_len);
ipfix_init_fields (option_template.s, &scope_index,
field_nf9scope,
NFLOW9_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS);
ipfix_init_fields (option_template.r, &option_index,
field_nf9option,
NFLOW9_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS);
memset (&nf9opt_data, 0, sizeof (nf9opt_data));
nf9opt_data.c.set_id = htons (IPFIX_SOFTFLOWD_OPTION_TEMPLATE_ID);
nf9opt_data.c.length = htons (sizeof (nf9opt_data));
nf9opt_data.scope_ifidx = htonl (ifidx);
nf9opt_data.samplingInterval =
htonl (option->sample > 1 ? option->sample : 1);
nf9opt_data.samplingAlgorithm = NFLOW9_SAMPLING_ALGORITHM_DETERMINISTIC;
strncpy (nf9opt_data.interfaceName, option->interfaceName,
strlen (option->interfaceName) <
sizeof (nf9opt_data.interfaceName) ?
strlen (option->interfaceName) :
sizeof (nf9opt_data.interfaceName));
}
static void
ipfix_init_option (struct timeval *system_boot_time, struct OPTION *option) {
u_int scope_index = 0, option_index = 0;
memset (&option_template, 0, sizeof (option_template));
option_template.h.c.set_id = htons (IPFIX_OPTION_TEMPLATE_SET_ID);
option_template.h.c.length = htons (sizeof (option_template));
option_template.h.u.i.r.template_id =
htons (IPFIX_SOFTFLOWD_OPTION_TEMPLATE_ID);
option_template.h.u.i.r.count =
htons (IPFIX_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS +
IPFIX_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS);
option_template.h.u.i.scope_count =
htons (IPFIX_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS);
ipfix_init_fields (option_template.s, &scope_index,
field_scope,
IPFIX_SOFTFLOWD_OPTION_TEMPLATE_SCOPE_RECORDS);
ipfix_init_fields (option_template.r, &option_index, field_option,
IPFIX_SOFTFLOWD_OPTION_TEMPLATE_NRECORDS);
memset (&option_data, 0, sizeof (option_data));
option_data.c.set_id = htons (IPFIX_SOFTFLOWD_OPTION_TEMPLATE_ID);
option_data.c.length = htons (sizeof (option_data));
option_data.scope_pid = htonl ((u_int32_t) option->meteringProcessId);
#if defined(htobe64) || defined(HAVE_DECL_HTOBE64)
option_data.systemInitTimeMilliseconds =
htobe64 ((u_int64_t) system_boot_time->tv_sec * 1000 +
(u_int64_t) system_boot_time->tv_usec / 1000);
#endif
option_data.samplingAlgorithm = htons (PSAMP_selectorAlgorithm_count);
option_data.samplingInterval = htonl (1);
option_data.samplingSpace =
htonl (option->sample > 0 ? option->sample - 1 : 0);
strncpy (option_data.interfaceName, option->interfaceName,
strlen (option->interfaceName) <
sizeof (option_data.interfaceName) ?
strlen (option->interfaceName) :
sizeof (option_data.interfaceName));
if (option->exporterAddr != NULL) {
struct addrinfo *rp;
for (rp = option->exporterAddr; rp != NULL; rp->ai_next) {
if (rp->ai_family == AF_INET) {
memcpy (&option_data.exporterIPv4Address, rp->ai_addr, sizeof(option_data.exporterIPv4Address));
memcpy (&option_data.originalExporterIPv4Address, rp->ai_addr, sizeof(option_data.originalExporterIPv4Address));
} else if (rp->ai_family == AF_INET6) {
memcpy (&option_data.exporterIPv6Address, rp->ai_addr, sizeof(option_data.exporterIPv6Address));
memcpy (&option_data.originalExporterIPv6Address, rp->ai_addr, sizeof(option_data.originalExporterIPv6Address));
}
}
}
}
static int
copy_data_time (union IPFIX_SOFTFLOWD_DATA_TIME *dt,
const struct FLOW *flow,
const struct timeval *system_boot_time,
struct FLOWTRACKPARAMETERS *param) {
int length = (param->time_format == 'm' || param->time_format == 'M'
|| param->time_format == 'n') ? 16 : 8;
if (dt == NULL)
return -1;
switch (param->time_format) {
struct ntp_time_t ntptime;
case 's':
dt->u32.start = htonl (flow->flow_start.tv_sec);
dt->u32.end = htonl (flow->flow_last.tv_sec);
break;
#if defined(htobe64) || defined(HAVE_DECL_HTOBE64)
case 'm':
dt->u64.start =
htobe64 ((u_int64_t) flow->flow_start.tv_sec * 1000 +
(u_int64_t) flow->flow_start.tv_usec / 1000);
dt->u64.end =
htobe64 ((u_int64_t) flow->flow_last.tv_sec * 1000 +
(u_int64_t) flow->flow_last.tv_usec / 1000);
break;
case 'M':
case 'n':
conv_unix_to_ntp ((struct timeval) flow->flow_start, &ntptime);
dt->u64.start =
htobe64 ((u_int64_t) ntptime.second << 32 | ntptime.fraction);
conv_unix_to_ntp ((struct timeval) flow->flow_last, &ntptime);
dt->u64.end =
htobe64 ((u_int64_t) ntptime.second << 32 | ntptime.fraction);
break;
#endif
default:
dt->u32.start =
htonl (timeval_sub_ms (&flow->flow_start, system_boot_time));
dt->u32.end = htonl (timeval_sub_ms (&flow->flow_last, system_boot_time));
break;
}
return length;
}
static u_int
ipfix_flow_to_template_index (const struct FLOW *flow) {
u_int index = 0;
if (flow->af == AF_INET) {
index = (flow->protocol == IPPROTO_ICMP) ? TMPLICMPV4 : TMPLV4;
} else if (flow->af == AF_INET6) {
index = (flow->protocol == IPPROTO_ICMPV6) ? TMPLICMPV6 : TMPLV6;
}
return index;
}
static int
ipfix_flow_to_flowset (const struct FLOW *flow, u_char * packet,
u_int len, u_int16_t ifidx,
const struct timeval *system_boot_time,
u_int * len_used,
struct FLOWTRACKPARAMETERS *param, u_int8_t bi_flag) {
struct IPFIX_SOFTFLOWD_DATA_V4ADDR *d4[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_V6ADDR *d6[2] = { NULL, NULL };
union IPFIX_SOFTFLOWD_DATA_TIME *dt[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_COMMON *dc[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_TRANSPORT *dtr[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_ICMP *di[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_VLAN *dv[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_ETHER *de[2] = { NULL, NULL };
struct IPFIX_SOFTFLOWD_DATA_BICOMMON *dbc = NULL;
struct IPFIX_SOFTFLOWD_DATA_BITRANSPORT *dbtr = NULL;
struct IPFIX_SOFTFLOWD_DATA_BIICMP *dbi = NULL;
#ifdef ENABLE_IFNAME
struct OPTION *option = ¶m->option;
#endif /* ENABLE_IFNAME */
u_int freclen = 0, nflows = 0, offset = 0;
u_int frecnum = bi_flag ? 1 : 2;
u_int tmplindex = ipfix_flow_to_template_index (flow);
int i = 0, k = 0;
freclen = templates[tmplindex].data_len;
if (len < freclen * frecnum)
return (-1);
for (i = 0; i < frecnum; i++) {
if (bi_flag == 0 && flow->octets[i] == 0)
continue;
nflows++;
if (flow->af == AF_INET) {
d4[i] = (struct IPFIX_SOFTFLOWD_DATA_V4ADDR *) &packet[offset];
memcpy (&d4[i]->sourceIPv4Address, &flow->addr[i].v4, 4);
memcpy (&d4[i]->destinationIPv4Address, &flow->addr[i ^ 1].v4, 4);
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_V4ADDR);
} else if (flow->af == AF_INET6) {
d6[i] = (struct IPFIX_SOFTFLOWD_DATA_V6ADDR *) &packet[offset];
memcpy (&d6[i]->sourceIPv6Address, &flow->addr[i].v6, 16);
memcpy (&d6[i]->destinationIPv6Address, &flow->addr[i ^ 1].v6, 16);
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_V6ADDR);
}
dt[i] = (union IPFIX_SOFTFLOWD_DATA_TIME *) &packet[offset];
offset += copy_data_time (dt[i], flow, system_boot_time, param);
dc[i] = (struct IPFIX_SOFTFLOWD_DATA_COMMON *) &packet[offset];
dc[i]->octetDeltaCount = htonl (flow->octets[i]);
dc[i]->packetDeltaCount = htonl (flow->packets[i]);
dc[i]->ingressInterface = dc[i]->egressInterface = htonl (ifidx);
dc[i]->flowDirection = i;
dc[i]->flowEndReason = flow->flowEndReason;
#ifdef ENABLE_IFNAME
strncpy (dc[i]->interfaceName, option->interfaceName,
strlen (option->interfaceName) <
sizeof (dc[i]->interfaceName) ?
strlen (option->interfaceName) : sizeof (dc[i]->interfaceName));
#endif /* ENABLE_IFNAME */
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_COMMON);
if (flow->protocol != IPPROTO_ICMP && flow->protocol != IPPROTO_ICMPV6) {
dtr[i] = (struct IPFIX_SOFTFLOWD_DATA_TRANSPORT *) &packet[offset];
dtr[i]->sourceTransportPort = flow->port[i];
dtr[i]->destinationTransportPort = flow->port[i ^ 1];
dtr[i]->protocolIdentifier = flow->protocol;
dtr[i]->tcpControlBits = flow->tcp_flags[i];
dtr[i]->ipClassOfService = flow->tos[i];
dtr[i]->ipVersion = (flow->af == AF_INET) ? 4 : 6;
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_TRANSPORT);
} else {
di[i] = (struct IPFIX_SOFTFLOWD_DATA_ICMP *) &packet[offset];
di[i]->icmpTypeCode = flow->port[i ^ 1];
di[i]->protocolIdentifier = flow->protocol;
di[i]->ipClassOfService = flow->tos[i];
di[i]->ipVersion = (flow->af == AF_INET) ? 4 : 6;
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_ICMP);
}
if (param->track_level >= TRACK_FULL_VLAN) {
dv[i] = (struct IPFIX_SOFTFLOWD_DATA_VLAN *) &packet[offset];
dv[i]->vlanId = htons (flow->vlanid[i]);
dv[i]->postVlanId = htons (flow->vlanid[i ^ 1]);
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_VLAN);
}
if (param->track_level >= TRACK_FULL_VLAN_ETHER) {
de[i] = (struct IPFIX_SOFTFLOWD_DATA_ETHER *) &packet[offset];
memcpy (&de[i]->sourceMacAddress, &flow->ethermac[i], 6);
memcpy (&de[i]->destinationMacAddress, &flow->ethermac[i ^ 1], 6);
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_ETHER);
}
if (bi_flag && i == 0) {
dbc = (struct IPFIX_SOFTFLOWD_DATA_BICOMMON *) &packet[offset];
dbc->octetDeltaCount = htonl (flow->octets[1]);
dbc->packetDeltaCount = htonl (flow->packets[1]);
dbc->ipClassOfService = flow->tos[1];
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_BICOMMON);
if (flow->protocol != IPPROTO_ICMP && flow->protocol != IPPROTO_ICMPV6) {
dbtr = (struct IPFIX_SOFTFLOWD_DATA_BITRANSPORT *)
&packet[offset];
dbtr->tcpControlBits = flow->tcp_flags[1];
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_BITRANSPORT);
} else {
dbi = (struct IPFIX_SOFTFLOWD_DATA_BIICMP *)
&packet[offset];
dbi->icmpTypeCode = flow->port[1];
offset += sizeof (struct IPFIX_SOFTFLOWD_DATA_BIICMP);
}
}
for (k = 0; k < param->max_num_label; k++) {
memcpy (&packet[offset], &flow->mplsLabels[k],
IPFIX_mplsLabelStackSection_SIZE);
offset += IPFIX_mplsLabelStackSection_SIZE;
}
}
*len_used = offset;
return (nflows);
}
static int
valuate_icmp (struct FLOW *flow) {
if (flow == NULL)
return -1;
if (flow->af == AF_INET)
if (flow->protocol == IPPROTO_ICMP)
return 1;
else
return 0;
else if (flow->af == AF_INET6)
if (flow->protocol == IPPROTO_ICMPV6)
return 1;
else
return 0;
else
return -1;
return -1;
}
void
ipfix_resend_template (void) {
if (ipfix_pkts_until_template > 0)
ipfix_pkts_until_template = 0;
}
void
memcpy_template (u_char * packet, u_int * offset,
struct IPFIX_SOFTFLOWD_TEMPLATE *template, u_int8_t bi_flag,
u_int8_t max_num_label) {
int i = 0;
int size = ntohs (template->h.c.length) -
template->bi_count * sizeof (struct IPFIX_VENDOR_FIELD_SPECIFIER) -
max_num_label * sizeof (struct IPFIX_FIELD_SPECIFIER);
memcpy (packet + *offset, template, size);
*offset += size;
if (bi_flag) {
size = template->bi_count * sizeof (struct IPFIX_VENDOR_FIELD_SPECIFIER);
memcpy (packet + *offset, template->v, size);
*offset += size;
}
// mpls
for (i = 0; i < max_num_label; i++) {
struct IPFIX_FIELD_SPECIFIER *mpls_fs =
(struct IPFIX_FIELD_SPECIFIER *) &packet[*offset];
mpls_fs->ie = htons (IPFIX_mplsTopLabelStackSection + i);
mpls_fs->length = htons (IPFIX_mplsLabelStackSection_SIZE);
*offset += sizeof (struct IPFIX_FIELD_SPECIFIER);
}
}
/*
* Given an array of expired flows, send ipfix report packets
* Returns number of packets sent or -1 on error
*/
static int
send_ipfix_common (struct FLOW **flows, int num_flows,
struct NETFLOW_TARGET *target,
u_int16_t ifidx, struct FLOWTRACKPARAMETERS *param,
int verbose_flag, u_int8_t bi_flag, u_int16_t version) {
struct IPFIX_HEADER *ipfix;
struct NFLOW9_HEADER *nf9;
struct IPFIX_SET_HEADER *dh;
struct timeval now;
u_int offset, last_af, i, j, num_packets, inc, last_valid, tmplindex;
int8_t icmp_flag, last_icmp_flag;
int r;
u_int records = 0;
u_char packet[IPFIX_SOFTFLOWD_MAX_PACKET_SIZE];
struct timeval *system_boot_time = ¶m->system_boot_time;
u_int64_t *flows_exported = ¶m->flows_exported;
u_int64_t *records_sent = ¶m->records_sent;
struct OPTION *option = ¶m->option;
static u_int sequence = 1;
if (version != 9 && version != 10)
return (-1);
if (param->adjust_time)
now = param->last_packet_time;
else
gettimeofday (&now, NULL);
if (ipfix_pkts_until_template == -1) {
ipfix_init_template (param, bi_flag, version);
ipfix_pkts_until_template = 0;
if (option != NULL) {
if (version == 10) {
ipfix_init_option (system_boot_time, option);
} else {
nflow9_init_option (ifidx, option);
}
}
}
last_valid = num_packets = 0;
for (j = 0; j < num_flows;) {
memset (packet, 0, sizeof (packet));
if (version == 10) {
ipfix = (struct IPFIX_HEADER *) packet;
ipfix->version = htons (version);
ipfix->length = 0; /* Filled as we go, htons at end */
if (param->adjust_time)
ipfix->export_time = htonl (now.tv_sec);
else
ipfix->export_time = htonl (time (NULL));
ipfix->od_id = 0;
offset = sizeof (*ipfix);
} else if (version == 9) {
nf9 = (struct NFLOW9_HEADER *) packet;
nf9->version = htons (version);
nf9->flows = 0; /* Filled as we go, htons at end */
nf9->uptime_ms = htonl (timeval_sub_ms (&now, system_boot_time));
if (param->adjust_time)
nf9->export_time = htonl (now.tv_sec);
else
nf9->export_time = htonl (time (NULL));
nf9->od_id = 0;
offset = sizeof (*nf9);
}
/* Refresh template headers if we need to */
if (ipfix_pkts_until_template <= 0) {
for (i = 0; i < TMPLMAX; i++) {
memcpy_template (packet, &offset, &templates[i], bi_flag,
param->max_num_label);
}
if (option != NULL) {
u_int16_t opt_tmpl_len = ntohs (option_template.h.c.length);
memcpy (packet + offset, &option_template, opt_tmpl_len);
offset += opt_tmpl_len;
if (version == 10) {
memcpy (packet + offset, &option_data, sizeof (option_data));
offset += sizeof (option_data);
} else if (version == 9) {
memcpy (packet + offset, &nf9opt_data, sizeof (nf9opt_data));
offset += sizeof (nf9opt_data);
}
}
ipfix_pkts_until_template = IPFIX_DEFAULT_TEMPLATE_INTERVAL;
if (target->is_loadbalance && target->num_destinations > 1) {
if (version == 10) {
ipfix->length = htons (offset);
ipfix->sequence =
htonl ((u_int32_t) (*records_sent & 0x00000000ffffffff));
} else if (version == 9) {
nf9->flows = htons (++records);
nf9->sequence = htonl (sequence++);
}
if (send_multi_destinations
(target->num_destinations, target->destinations, 0, packet,
offset) < 0)
return (-1);
offset = version == 10 ? sizeof (*ipfix) : sizeof (*nf9); // resest offset
}
}
dh = NULL;
last_af = 0;
last_icmp_flag = -1;
records = 0;
for (i = 0; i + j < num_flows; i++) {
icmp_flag = valuate_icmp (flows[i + j]);
if (dh == NULL || flows[i + j]->af != last_af ||
icmp_flag != last_icmp_flag) {
if (dh != NULL) {
if (offset % 4 != 0) {
/* Pad to multiple of 4 */
dh->length += 4 - (offset % 4);
offset += 4 - (offset % 4);
}
/* Finalise last header */
dh->length = htons (dh->length);
}
if (offset + sizeof (*dh) > sizeof (packet)) {
/* Mark header is finished */
dh = NULL;
break;
}
dh = (struct IPFIX_SET_HEADER *) (packet + offset);
tmplindex = ipfix_flow_to_template_index (flows[i + j]);
dh->set_id = templates[tmplindex].h.r.template_id;
last_af = flows[i + j]->af;
last_icmp_flag = icmp_flag;
last_valid = offset;
dh->length = sizeof (*dh); /* Filled as we go */
offset += sizeof (*dh);
}
r = ipfix_flow_to_flowset (flows[i + j],
packet + offset,
sizeof (packet) - offset,
ifidx, system_boot_time,
&inc, param, bi_flag);
if (r <= 0) {
/* yank off data header, if we had to go back */
if (last_valid)
offset = last_valid;
break;
}
records += (u_int) r;
offset += inc;
dh->length += inc;
last_valid = 0; /* Don't clobber this header now */
if (verbose_flag) {
logit (LOG_DEBUG, "Flow %d/%d: "
"r %d offset %d ie %04x len %d(0x%04x)",
r, i, j, offset, dh->set_id, dh->length, dh->length);
}
}
/* Don't finish header if it has already been done */
if (dh != NULL) {