1/*- 2 * Copyright (c) 2010 Alexander V. Chernikov <melifaro@ipfw.ru> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29#ifndef _NETFLOW_V9_H_ 30#define _NETFLOW_V9_H_ 31 32#ifdef COUNTERS_64 33#define CNTR uint64_t 34#define CNTR_MAX UINT64_MAX 35#else 36#define CNTR uint32_t 37#define CNTR_MAX UINT_MAX 38#endif 39 40struct netflow_v9_template 41{ 42 int field_id; 43 int field_length; 44}; 45 46/* Template ID for tcp/udp v4 streams ID:257 (0x100 + NETFLOW_V9_FLOW_V4_L4) */ 47struct netflow_v9_record_ipv4_tcp 48{ 49 uint32_t src_addr; /* Source IPv4 address (IPV4_SRC_ADDR) */ 50 uint32_t dst_addr; /* Destination IPv4 address (IPV4_DST_ADDR) */ 51 uint32_t next_hop; /* Next hop IPv4 address (IPV4_NEXT_HOP) */ 52 uint16_t i_ifx; /* Source interface index (INPUT_SNMP) */ 53 uint16_t o_ifx; /* Destination interface index (OUTPUT_SNMP) */ 54 CNTR i_packets; /* Number of incoming packets in a flow (IN_PKTS) */ 55 CNTR i_octets; /* Number of incoming octets in a flow (IN_BYTES) */ 56 CNTR o_packets; /* Number of outgoing packets in a flow (OUT_PKTS) */ 57 CNTR o_octets; /* Number of outgoing octets in a flow (OUT_BYTES) */ 58 uint32_t first; /* System uptime at start of a flow (FIRST_SWITCHED) */ 59 uint32_t last; /* System uptime at end of a flow (LAST_SWITCHED) */ 60 uint16_t s_port; /* Source port (L4_SRC_PORT) */ 61 uint16_t d_port; /* Destination port (L4_DST_PORT) */ 62 uint8_t flags; /* Cumulative OR of tcp flags (TCP_FLAGS) */ 63 uint8_t prot; /* IP protocol */ 64 uint8_t tos; /* IP type of service IN (or OUT) (TOS) */ 65 uint32_t src_as; /* Src peer/origin Autonomous System (SRC_AS) */ 66 uint32_t dst_as; /* Dst peer/origin Autonomous System (DST_AS) */ 67 uint8_t src_mask; /* Source route's mask bits (SRC_MASK) */ 68 uint8_t dst_mask; /* Destination route's mask bits (DST_MASK) */ 69} __attribute__((__packed__)); 70 71/* Template ID for tcp/udp v6 streams ID: 260 (0x100 + NETFLOW_V9_FLOW_V6_L4) */ 72struct netflow_v9_record_ipv6_tcp 73{ 74 struct in6_addr src_addr; /* Source IPv6 address (IPV6_SRC_ADDR) */ 75 struct in6_addr dst_addr; /* Destination IPv6 address (IPV6_DST_ADDR) */ 76 struct in6_addr next_hop; /* Next hop IPv6 address (IPV6_NEXT_HOP) */ 77 uint16_t i_ifx; /* Source interface index (INPUT_SNMP) */ 78 uint16_t o_ifx; /* Destination interface index (OUTPUT_SNMP) */ 79 CNTR i_packets; /* Number of incoming packets in a flow (IN_PKTS) */ 80 CNTR i_octets; /* Number of incoming octets in a flow (IN_BYTES) */ 81 CNTR o_packets; /* Number of outgoing packets in a flow (OUT_PKTS) */ 82 CNTR o_octets; /* Number of outgoing octets in a flow (OUT_BYTES) */ 83 uint32_t first; /* System uptime at start of a flow (FIRST_SWITCHED) */ 84 uint32_t last; /* System uptime at end of a flow (LAST_SWITCHED) */ 85 uint16_t s_port; /* Source port (L4_SRC_PORT) */ 86 uint16_t d_port; /* Destination port (L4_DST_PORT) */ 87 uint8_t flags; /* Cumulative OR of tcp flags (TCP_FLAGS) */ 88 uint8_t prot; /* IP protocol */ 89 uint8_t tos; /* IP type of service IN (or OUT) (TOS) */ 90 uint32_t src_as; /* Src peer/origin Autonomous System (SRC_AS) */ 91 uint32_t dst_as; /* Dst peer/origin Autonomous System (DST_AS) */ 92 uint8_t src_mask; /* Source route's mask bits (SRC_MASK) */ 93 uint8_t dst_mask; /* Destination route's mask bits (DST_MASK) */ 94} __attribute__((__packed__)); 95 96/* Used in export9_add to determine max record size */ 97struct netflow_v9_record_general 98{ 99 union { 100 struct netflow_v9_record_ipv4_tcp v4_tcp; 101 struct netflow_v9_record_ipv6_tcp v6_tcp; 102 } rec; 103}; 104 105#define BASE_MTU 1500 106#define MIN_MTU sizeof(struct netflow_v5_header) 107#define MAX_MTU 16384 108#define NETFLOW_V9_MAX_SIZE _NETFLOW_V9_MAX_SIZE(BASE_MTU) 109/* Decrease MSS by 16 since there can be some IPv[46] header options */ 110#define _NETFLOW_V9_MAX_SIZE(x) (x) - sizeof(struct ip6_hdr) - sizeof(struct udphdr) - 16 111 112/* #define NETFLOW_V9_MAX_FLOWSETS 2 */ 113 114#define NETFLOW_V9_MAX_RECORD_SIZE sizeof(struct netflow_v9_record_ipv6_tcp) 115#define NETFLOW_V9_MAX_PACKETS_TEMPL 500 /* Send data templates every ... packets */ 116#define NETFLOW_V9_MAX_TIME_TEMPL 600 /* Send data templates every ... seconds */ 117#define NETFLOW_V9_MAX_TEMPLATES 16 /* Not a real value */ 118#define _NETFLOW_V9_TEMPLATE_SIZE(x) (sizeof(x) / sizeof(struct netflow_v9_template)) * 4 119//#define _NETFLOW_V9_TEMPLATE_SIZE(x) ((x) + 1) * 4 120 121/* Flow Templates */ 122#define NETFLOW_V9_FLOW_V4_L4 1 /* IPv4 TCP/UDP packet */ 123#define NETFLOW_V9_FLOW_V4_ICMP 2 /* IPv4 ICMP packet, currently unused */ 124#define NETFLOW_V9_FLOW_V4_L3 3 /* IPv4 IP packet */ 125#define NETFLOW_V9_FLOW_V6_L4 4 /* IPv6 TCP/UDP packet */ 126#define NETFLOW_V9_FLOW_V6_ICMP 5 /* IPv6 ICMP packet, currently unused */ 127#define NETFLOW_V9_FLOW_V6_L3 6 /* IPv6 IP packet */ 128 129#define NETFLOW_V9_FLOW_FAKE 65535 /* Not uset used in real flowsets! */ 130 131struct netflow_v9_export_dgram { 132 struct netflow_v9_header header; 133 char *data; /* MTU can change, record length is dynamic */ 134}; 135 136struct netflow_v9_flowset_header { 137 uint16_t id; /* FlowSet id */ 138 uint16_t length; /* FlowSet length */ 139} __attribute__((__packed__)); 140 141struct netflow_v9_packet_opt { 142 uint16_t length; /* current packet length */ 143 uint16_t count; /* current records count */ 144 uint16_t mtu; /* max MTU shapshot */ 145 uint16_t flow_type; /* current flowset */ 146 uint16_t flow_header; /* offset pointing to current flow header */ 147}; 148#endif 149