78a6b08618
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
151 lines
6.4 KiB
C
151 lines
6.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2010 Alexander V. Chernikov <melifaro@ipfw.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NETFLOW_V9_H_
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#define _NETFLOW_V9_H_
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#ifdef COUNTERS_64
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#define CNTR uint64_t
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#define CNTR_MAX UINT64_MAX
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#else
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#define CNTR uint32_t
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#define CNTR_MAX UINT_MAX
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#endif
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struct netflow_v9_template
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{
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int field_id;
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int field_length;
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};
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/* Template ID for tcp/udp v4 streams ID:257 (0x100 + NETFLOW_V9_FLOW_V4_L4) */
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struct netflow_v9_record_ipv4_tcp
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{
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uint32_t src_addr; /* Source IPv4 address (IPV4_SRC_ADDR) */
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uint32_t dst_addr; /* Destination IPv4 address (IPV4_DST_ADDR) */
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uint32_t next_hop; /* Next hop IPv4 address (IPV4_NEXT_HOP) */
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uint16_t i_ifx; /* Source interface index (INPUT_SNMP) */
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uint16_t o_ifx; /* Destination interface index (OUTPUT_SNMP) */
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CNTR i_packets; /* Number of incoming packets in a flow (IN_PKTS) */
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CNTR i_octets; /* Number of incoming octets in a flow (IN_BYTES) */
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CNTR o_packets; /* Number of outgoing packets in a flow (OUT_PKTS) */
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CNTR o_octets; /* Number of outgoing octets in a flow (OUT_BYTES) */
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uint32_t first; /* System uptime at start of a flow (FIRST_SWITCHED) */
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uint32_t last; /* System uptime at end of a flow (LAST_SWITCHED) */
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uint16_t s_port; /* Source port (L4_SRC_PORT) */
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uint16_t d_port; /* Destination port (L4_DST_PORT) */
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uint8_t flags; /* Cumulative OR of tcp flags (TCP_FLAGS) */
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uint8_t prot; /* IP protocol */
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uint8_t tos; /* IP type of service IN (or OUT) (TOS) */
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uint32_t src_as; /* Src peer/origin Autonomous System (SRC_AS) */
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uint32_t dst_as; /* Dst peer/origin Autonomous System (DST_AS) */
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uint8_t src_mask; /* Source route's mask bits (SRC_MASK) */
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uint8_t dst_mask; /* Destination route's mask bits (DST_MASK) */
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} __attribute__((__packed__));
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/* Template ID for tcp/udp v6 streams ID: 260 (0x100 + NETFLOW_V9_FLOW_V6_L4) */
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struct netflow_v9_record_ipv6_tcp
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{
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struct in6_addr src_addr; /* Source IPv6 address (IPV6_SRC_ADDR) */
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struct in6_addr dst_addr; /* Destination IPv6 address (IPV6_DST_ADDR) */
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struct in6_addr next_hop; /* Next hop IPv6 address (IPV6_NEXT_HOP) */
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uint16_t i_ifx; /* Source interface index (INPUT_SNMP) */
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uint16_t o_ifx; /* Destination interface index (OUTPUT_SNMP) */
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CNTR i_packets; /* Number of incoming packets in a flow (IN_PKTS) */
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CNTR i_octets; /* Number of incoming octets in a flow (IN_BYTES) */
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CNTR o_packets; /* Number of outgoing packets in a flow (OUT_PKTS) */
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CNTR o_octets; /* Number of outgoing octets in a flow (OUT_BYTES) */
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uint32_t first; /* System uptime at start of a flow (FIRST_SWITCHED) */
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uint32_t last; /* System uptime at end of a flow (LAST_SWITCHED) */
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uint16_t s_port; /* Source port (L4_SRC_PORT) */
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uint16_t d_port; /* Destination port (L4_DST_PORT) */
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uint8_t flags; /* Cumulative OR of tcp flags (TCP_FLAGS) */
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uint8_t prot; /* IP protocol */
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uint8_t tos; /* IP type of service IN (or OUT) (TOS) */
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uint32_t src_as; /* Src peer/origin Autonomous System (SRC_AS) */
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uint32_t dst_as; /* Dst peer/origin Autonomous System (DST_AS) */
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uint8_t src_mask; /* Source route's mask bits (SRC_MASK) */
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uint8_t dst_mask; /* Destination route's mask bits (DST_MASK) */
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} __attribute__((__packed__));
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/* Used in export9_add to determine max record size */
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struct netflow_v9_record_general
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{
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union {
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struct netflow_v9_record_ipv4_tcp v4_tcp;
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struct netflow_v9_record_ipv6_tcp v6_tcp;
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} rec;
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};
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#define BASE_MTU 1500
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#define MIN_MTU sizeof(struct netflow_v5_header)
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#define MAX_MTU 16384
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#define NETFLOW_V9_MAX_SIZE _NETFLOW_V9_MAX_SIZE(BASE_MTU)
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/* Decrease MSS by 16 since there can be some IPv[46] header options */
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#define _NETFLOW_V9_MAX_SIZE(x) (x) - sizeof(struct ip6_hdr) - sizeof(struct udphdr) - 16
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/* #define NETFLOW_V9_MAX_FLOWSETS 2 */
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#define NETFLOW_V9_MAX_RECORD_SIZE sizeof(struct netflow_v9_record_ipv6_tcp)
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#define NETFLOW_V9_MAX_PACKETS_TEMPL 500 /* Send data templates every ... packets */
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#define NETFLOW_V9_MAX_TIME_TEMPL 600 /* Send data templates every ... seconds */
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#define NETFLOW_V9_MAX_TEMPLATES 16 /* Not a real value */
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#define _NETFLOW_V9_TEMPLATE_SIZE(x) (sizeof(x) / sizeof(struct netflow_v9_template)) * 4
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//#define _NETFLOW_V9_TEMPLATE_SIZE(x) ((x) + 1) * 4
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/* Flow Templates */
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#define NETFLOW_V9_FLOW_V4_L4 1 /* IPv4 TCP/UDP packet */
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#define NETFLOW_V9_FLOW_V4_ICMP 2 /* IPv4 ICMP packet, currently unused */
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#define NETFLOW_V9_FLOW_V4_L3 3 /* IPv4 IP packet */
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#define NETFLOW_V9_FLOW_V6_L4 4 /* IPv6 TCP/UDP packet */
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#define NETFLOW_V9_FLOW_V6_ICMP 5 /* IPv6 ICMP packet, currently unused */
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#define NETFLOW_V9_FLOW_V6_L3 6 /* IPv6 IP packet */
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#define NETFLOW_V9_FLOW_FAKE 65535 /* Not uset used in real flowsets! */
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struct netflow_v9_export_dgram {
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struct netflow_v9_header header;
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char *data; /* MTU can change, record length is dynamic */
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};
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struct netflow_v9_flowset_header {
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uint16_t id; /* FlowSet id */
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uint16_t length; /* FlowSet length */
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} __attribute__((__packed__));
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struct netflow_v9_packet_opt {
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uint16_t length; /* current packet length */
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uint16_t count; /* current records count */
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uint16_t mtu; /* max MTU shapshot */
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uint16_t flow_type; /* current flowset */
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uint16_t flow_header; /* offset pointing to current flow header */
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};
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#endif
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