280 lines
7.8 KiB
C
280 lines
7.8 KiB
C
/* $OpenBSD: if_pflow.h,v 1.19 2022/11/23 15:12:27 mvs Exp $ */
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/*
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* Copyright (c) 2008 Henning Brauer <henning@openbsd.org>
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* Copyright (c) 2008 Joerg Goltermann <jg@osn.de>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _NET_IF_PFLOW_H_
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#define _NET_IF_PFLOW_H_
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#define PFLOW_ID_LEN sizeof(u_int64_t)
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#define PFLOW_MAXFLOWS 30
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#define PFLOW_ENGINE_TYPE 42
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#define PFLOW_ENGINE_ID 42
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#define PFLOW_MAXBYTES 0xffffffff
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#define PFLOW_TIMEOUT 30
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#define PFLOW_TMPL_TIMEOUT 30 /* rfc 5101 10.3.6 (p.40) recommends 600 */
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#define PFLOW_IPFIX_TMPL_SET_ID 2
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/* RFC 5102 Information Element Identifiers */
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#define PFIX_IE_octetDeltaCount 1
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#define PFIX_IE_packetDeltaCount 2
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#define PFIX_IE_protocolIdentifier 4
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#define PFIX_IE_ipClassOfService 5
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#define PFIX_IE_sourceTransportPort 7
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#define PFIX_IE_sourceIPv4Address 8
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#define PFIX_IE_ingressInterface 10
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#define PFIX_IE_destinationTransportPort 11
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#define PFIX_IE_destinationIPv4Address 12
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#define PFIX_IE_egressInterface 14
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#define PFIX_IE_flowEndSysUpTime 21
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#define PFIX_IE_flowStartSysUpTime 22
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#define PFIX_IE_sourceIPv6Address 27
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#define PFIX_IE_destinationIPv6Address 28
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#define PFIX_IE_flowStartMilliseconds 152
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#define PFIX_IE_flowEndMilliseconds 153
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struct pflow_flow {
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u_int32_t src_ip;
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u_int32_t dest_ip;
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u_int32_t nexthop_ip;
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u_int16_t if_index_in;
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u_int16_t if_index_out;
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u_int32_t flow_packets;
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u_int32_t flow_octets;
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u_int32_t flow_start;
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u_int32_t flow_finish;
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u_int16_t src_port;
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u_int16_t dest_port;
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u_int8_t pad1;
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u_int8_t tcp_flags;
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u_int8_t protocol;
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u_int8_t tos;
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u_int16_t src_as;
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u_int16_t dest_as;
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u_int8_t src_mask;
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u_int8_t dest_mask;
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u_int16_t pad2;
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} __packed;
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struct pflow_set_header {
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u_int16_t set_id;
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u_int16_t set_length; /* total length of the set,
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in octets, including the set header */
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} __packed;
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#define PFLOW_SET_HDRLEN sizeof(struct pflow_set_header)
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struct pflow_tmpl_hdr {
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u_int16_t tmpl_id;
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u_int16_t field_count;
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} __packed;
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struct pflow_tmpl_fspec {
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u_int16_t field_id;
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u_int16_t len;
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} __packed;
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/* update pflow_clone_create() when changing pflow_ipfix_tmpl_ipv4 */
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struct pflow_ipfix_tmpl_ipv4 {
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struct pflow_tmpl_hdr h;
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struct pflow_tmpl_fspec src_ip;
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struct pflow_tmpl_fspec dest_ip;
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struct pflow_tmpl_fspec if_index_in;
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struct pflow_tmpl_fspec if_index_out;
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struct pflow_tmpl_fspec packets;
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struct pflow_tmpl_fspec octets;
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struct pflow_tmpl_fspec start;
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struct pflow_tmpl_fspec finish;
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struct pflow_tmpl_fspec src_port;
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struct pflow_tmpl_fspec dest_port;
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struct pflow_tmpl_fspec tos;
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struct pflow_tmpl_fspec protocol;
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#define PFLOW_IPFIX_TMPL_IPV4_FIELD_COUNT 12
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#define PFLOW_IPFIX_TMPL_IPV4_ID 256
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} __packed;
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/* update pflow_clone_create() when changing pflow_ipfix_tmpl_v6 */
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struct pflow_ipfix_tmpl_ipv6 {
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struct pflow_tmpl_hdr h;
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struct pflow_tmpl_fspec src_ip;
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struct pflow_tmpl_fspec dest_ip;
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struct pflow_tmpl_fspec if_index_in;
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struct pflow_tmpl_fspec if_index_out;
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struct pflow_tmpl_fspec packets;
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struct pflow_tmpl_fspec octets;
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struct pflow_tmpl_fspec start;
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struct pflow_tmpl_fspec finish;
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struct pflow_tmpl_fspec src_port;
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struct pflow_tmpl_fspec dest_port;
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struct pflow_tmpl_fspec tos;
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struct pflow_tmpl_fspec protocol;
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#define PFLOW_IPFIX_TMPL_IPV6_FIELD_COUNT 12
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#define PFLOW_IPFIX_TMPL_IPV6_ID 257
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} __packed;
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struct pflow_ipfix_tmpl {
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struct pflow_set_header set_header;
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struct pflow_ipfix_tmpl_ipv4 ipv4_tmpl;
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struct pflow_ipfix_tmpl_ipv6 ipv6_tmpl;
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} __packed;
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struct pflow_ipfix_flow4 {
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u_int32_t src_ip; /* sourceIPv4Address*/
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u_int32_t dest_ip; /* destinationIPv4Address */
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u_int32_t if_index_in; /* ingressInterface */
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u_int32_t if_index_out; /* egressInterface */
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u_int64_t flow_packets; /* packetDeltaCount */
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u_int64_t flow_octets; /* octetDeltaCount */
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int64_t flow_start; /* flowStartMilliseconds */
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int64_t flow_finish; /* flowEndMilliseconds */
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u_int16_t src_port; /* sourceTransportPort */
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u_int16_t dest_port; /* destinationTransportPort */
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u_int8_t tos; /* ipClassOfService */
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u_int8_t protocol; /* protocolIdentifier */
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/* XXX padding needed? */
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} __packed;
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struct pflow_ipfix_flow6 {
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struct in6_addr src_ip; /* sourceIPv6Address */
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struct in6_addr dest_ip; /* destinationIPv6Address */
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u_int32_t if_index_in; /* ingressInterface */
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u_int32_t if_index_out; /* egressInterface */
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u_int64_t flow_packets; /* packetDeltaCount */
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u_int64_t flow_octets; /* octetDeltaCount */
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int64_t flow_start; /* flowStartMilliseconds */
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int64_t flow_finish; /* flowEndMilliseconds */
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u_int16_t src_port; /* sourceTransportPort */
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u_int16_t dest_port; /* destinationTransportPort */
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u_int8_t tos; /* ipClassOfService */
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u_int8_t protocol; /* protocolIdentifier */
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/* XXX padding needed? */
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} __packed;
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#ifdef _KERNEL
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/*
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* Locks used to protect struct members and global data
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* N net lock
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* p this pflow_softc' `sc_lock'
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*/
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struct pflow_softc {
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struct rwlock sc_lock;
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int sc_dying; /* [N] */
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struct ifnet sc_if;
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unsigned int sc_count;
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unsigned int sc_count4;
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unsigned int sc_count6;
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unsigned int sc_maxcount;
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unsigned int sc_maxcount4;
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unsigned int sc_maxcount6;
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u_int64_t sc_gcounter;
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u_int32_t sc_sequence;
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struct timeout sc_tmo;
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struct timeout sc_tmo6;
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struct timeout sc_tmo_tmpl;
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struct mbuf_queue sc_outputqueue;
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struct task sc_outputtask;
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struct socket *so; /* [p] */
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struct mbuf *send_nam;
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struct sockaddr *sc_flowsrc;
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struct sockaddr *sc_flowdst;
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struct pflow_ipfix_tmpl sc_tmpl_ipfix;
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u_int8_t sc_version;
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struct mbuf *sc_mbuf; /* current cumulative mbuf */
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struct mbuf *sc_mbuf6; /* current cumulative mbuf */
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SLIST_ENTRY(pflow_softc) sc_next;
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};
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extern struct pflow_softc *pflowif;
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#endif /* _KERNEL */
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struct pflow_header {
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u_int16_t version;
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u_int16_t count;
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u_int32_t uptime_ms;
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u_int32_t time_sec;
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u_int32_t time_nanosec;
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u_int32_t flow_sequence;
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u_int8_t engine_type;
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u_int8_t engine_id;
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u_int8_t reserved1;
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u_int8_t reserved2;
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} __packed;
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#define PFLOW_HDRLEN sizeof(struct pflow_header)
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struct pflow_v10_header {
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u_int16_t version;
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u_int16_t length;
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u_int32_t time_sec;
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u_int32_t flow_sequence;
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u_int32_t observation_dom;
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} __packed;
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#define PFLOW_IPFIX_HDRLEN sizeof(struct pflow_v10_header)
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struct pflowstats {
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u_int64_t pflow_flows;
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u_int64_t pflow_packets;
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u_int64_t pflow_onomem;
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u_int64_t pflow_oerrors;
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};
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/* Supported flow protocols */
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#define PFLOW_PROTO_5 5 /* original pflow */
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#define PFLOW_PROTO_10 10 /* ipfix */
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#define PFLOW_PROTO_MAX 11
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#define PFLOW_PROTO_DEFAULT PFLOW_PROTO_5
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struct pflow_protos {
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const char *ppr_name;
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u_int8_t ppr_proto;
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};
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#define PFLOW_PROTOS { \
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{ "5", PFLOW_PROTO_5 }, \
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{ "10", PFLOW_PROTO_10 }, \
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}
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/*
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* Configuration structure for SIOCSETPFLOW SIOCGETPFLOW
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*/
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struct pflowreq {
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struct sockaddr_storage flowsrc;
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struct sockaddr_storage flowdst;
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u_int16_t addrmask;
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u_int8_t version;
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#define PFLOW_MASK_SRCIP 0x01
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#define PFLOW_MASK_DSTIP 0x02
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#define PFLOW_MASK_VERSION 0x04
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};
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#ifdef _KERNEL
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int export_pflow(struct pf_state *);
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int pflow_sysctl(int *, u_int, void *, size_t *, void *, size_t);
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#endif /* _KERNEL */
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#endif /* _NET_IF_PFLOW_H_ */
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