/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2010 Alexander V. Chernikov <melifaro@ipfw.ru>
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#ifndef _NETFLOW_V9_H_
#define _NETFLOW_V9_H_
#ifdef COUNTERS_64
#define CNTR uint64_t
#define CNTR_MAX UINT64_MAX
#else
#define CNTR uint32_t
#define CNTR_MAX UINT_MAX
#endif
struct netflow_v9_template
{
int field_id;
int field_length;
};
/* Template ID for tcp/udp v4 streams ID:257 (0x100 + NETFLOW_V9_FLOW_V4_L4) */
struct netflow_v9_record_ipv4_tcp
{
uint32_t src_addr; /* Source IPv4 address (IPV4_SRC_ADDR) */
uint32_t dst_addr; /* Destination IPv4 address (IPV4_DST_ADDR) */
uint32_t next_hop; /* Next hop IPv4 address (IPV4_NEXT_HOP) */
uint16_t i_ifx; /* Source interface index (INPUT_SNMP) */
uint16_t o_ifx; /* Destination interface index (OUTPUT_SNMP) */
CNTR i_packets; /* Number of incoming packets in a flow (IN_PKTS) */
CNTR i_octets; /* Number of incoming octets in a flow (IN_BYTES) */
CNTR o_packets; /* Number of outgoing packets in a flow (OUT_PKTS) */
CNTR o_octets; /* Number of outgoing octets in a flow (OUT_BYTES) */
uint32_t first; /* System uptime at start of a flow (FIRST_SWITCHED) */
uint32_t last; /* System uptime at end of a flow (LAST_SWITCHED) */
uint16_t s_port; /* Source port (L4_SRC_PORT) */
uint16_t d_port; /* Destination port (L4_DST_PORT) */
uint8_t flags; /* Cumulative OR of tcp flags (TCP_FLAGS) */
uint8_t prot; /* IP protocol */
uint8_t tos; /* IP type of service IN (or OUT) (TOS) */
uint32_t src_as; /* Src peer/origin Autonomous System (SRC_AS) */
uint32_t dst_as; /* Dst peer/origin Autonomous System (DST_AS) */
uint8_t src_mask; /* Source route's mask bits (SRC_MASK) */
uint8_t dst_mask; /* Destination route's mask bits (DST_MASK) */
} __attribute__((__packed__));
/* Template ID for tcp/udp v6 streams ID: 260 (0x100 + NETFLOW_V9_FLOW_V6_L4) */
struct netflow_v9_record_ipv6_tcp
{
struct in6_addr src_addr; /* Source IPv6 address (IPV6_SRC_ADDR) */
struct in6_addr dst_addr; /* Destination IPv6 address (IPV6_DST_ADDR) */
struct in6_addr next_hop; /* Next hop IPv6 address (IPV6_NEXT_HOP) */
uint16_t i_ifx; /* Source interface index (INPUT_SNMP) */
uint16_t o_ifx; /* Destination interface index (OUTPUT_SNMP) */
CNTR i_packets; /* Number of incoming packets in a flow (IN_PKTS) */
CNTR i_octets; /* Number of incoming octets in a flow (IN_BYTES) */
CNTR o_packets; /* Number of outgoing packets in a flow (OUT_PKTS) */
CNTR o_octets; /* Number of outgoing octets in a flow (OUT_BYTES) */
uint32_t first; /* System uptime at start of a flow (FIRST_SWITCHED) */
uint32_t last; /* System uptime at end of a flow (LAST_SWITCHED) */
uint16_t s_port; /* Source port (L4_SRC_PORT) */
uint16_t d_port; /* Destination port (L4_DST_PORT) */
uint8_t flags; /* Cumulative OR of tcp flags (TCP_FLAGS) */
uint8_t prot; /* IP protocol */
uint8_t tos; /* IP type of service IN (or OUT) (TOS) */
uint32_t src_as; /* Src peer/origin Autonomous System (SRC_AS) */
uint32_t dst_as; /* Dst peer/origin Autonomous System (DST_AS) */
uint8_t src_mask; /* Source route's mask bits (SRC_MASK) */
uint8_t dst_mask; /* Destination route's mask bits (DST_MASK) */
} __attribute__((__packed__));
/* Used in export9_add to determine max record size */
struct netflow_v9_record_general
{
union {
struct netflow_v9_record_ipv4_tcp v4_tcp;
struct netflow_v9_record_ipv6_tcp v6_tcp;
} rec;
};
#define BASE_MTU 1500
#define MIN_MTU sizeof(struct netflow_v5_header)
#define MAX_MTU 16384
#define NETFLOW_V9_MAX_SIZE _NETFLOW_V9_MAX_SIZE(BASE_MTU)
/* Decrease MSS by 16 since there can be some IPv[46] header options */
#define _NETFLOW_V9_MAX_SIZE(x) (x) - sizeof(struct ip6_hdr) - sizeof(struct udphdr) - 16
/* #define NETFLOW_V9_MAX_FLOWSETS 2 */
#define NETFLOW_V9_MAX_RECORD_SIZE sizeof(struct netflow_v9_record_ipv6_tcp)
#define NETFLOW_V9_MAX_PACKETS_TEMPL 500 /* Send data templates every ... packets */
#define NETFLOW_V9_MAX_TIME_TEMPL 600 /* Send data templates every ... seconds */
#define NETFLOW_V9_MAX_TEMPLATES 16 /* Not a real value */
#define _NETFLOW_V9_TEMPLATE_SIZE(x) (sizeof(x) / sizeof(struct netflow_v9_template)) * 4
//#define _NETFLOW_V9_TEMPLATE_SIZE(x) ((x) + 1) * 4
/* Flow Templates */
#define NETFLOW_V9_FLOW_V4_L4 1 /* IPv4 TCP/UDP packet */
#define NETFLOW_V9_FLOW_V4_ICMP 2 /* IPv4 ICMP packet, currently unused */
#define NETFLOW_V9_FLOW_V4_L3 3 /* IPv4 IP packet */
#define NETFLOW_V9_FLOW_V6_L4 4 /* IPv6 TCP/UDP packet */
#define NETFLOW_V9_FLOW_V6_ICMP 5 /* IPv6 ICMP packet, currently unused */
#define NETFLOW_V9_FLOW_V6_L3 6 /* IPv6 IP packet */
#define NETFLOW_V9_FLOW_FAKE 65535 /* Not uset used in real flowsets! */
struct netflow_v9_export_dgram {
struct netflow_v9_header header;
char *data; /* MTU can change, record length is dynamic */
};
struct netflow_v9_flowset_header {
uint16_t id; /* FlowSet id */
uint16_t length; /* FlowSet length */
} __attribute__((__packed__));
struct netflow_v9_packet_opt {
uint16_t length; /* current packet length */
uint16_t count; /* current records count */
uint16_t mtu; /* max MTU snapshot */
uint16_t flow_type; /* current flowset */
uint16_t flow_header; /* offset pointing to current flow header */
};
#endif
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