/*- * 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
