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files >> //usr/include/pcap/nflog.h
/* * Copyright (c) 2013, Petar Alilovic, * Faculty of Electrical Engineering and Computing, University of Zagreb * All rights reserved * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 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 lib_pcap_nflog_h #define lib_pcap_nflog_h #include <pcap/pcap-inttypes.h> /* * Structure of an NFLOG header and TLV parts, as described at * https://www.tcpdump.org/linktypes/LINKTYPE_NFLOG.html * * The NFLOG header is big-endian. * * The TLV length and type are in host byte order. The value is either * big-endian or is an array of bytes in some externally-specified byte * order (text string, link-layer address, link-layer header, packet * data, etc.). */ typedef struct nflog_hdr { uint8_t nflog_family; /* address family */ uint8_t nflog_version; /* version */ uint16_t nflog_rid; /* resource ID */ } nflog_hdr_t; typedef struct nflog_tlv { uint16_t tlv_length; /* tlv length */ uint16_t tlv_type; /* tlv type */ /* value follows this */ } nflog_tlv_t; typedef struct nflog_packet_hdr { uint16_t hw_protocol; /* hw protocol */ uint8_t hook; /* netfilter hook */ uint8_t pad; /* padding to 32 bits */ } nflog_packet_hdr_t; typedef struct nflog_hwaddr { uint16_t hw_addrlen; /* address length */ uint16_t pad; /* padding to 32-bit boundary */ uint8_t hw_addr[8]; /* address, up to 8 bytes */ } nflog_hwaddr_t; typedef struct nflog_timestamp { uint64_t sec; uint64_t usec; } nflog_timestamp_t; /* * TLV types. */ #define NFULA_PACKET_HDR 1 /* nflog_packet_hdr_t */ #define NFULA_MARK 2 /* packet mark from skbuff */ #define NFULA_TIMESTAMP 3 /* nflog_timestamp_t for skbuff's time stamp */ #define NFULA_IFINDEX_INDEV 4 /* ifindex of device on which packet received (possibly bridge group) */ #define NFULA_IFINDEX_OUTDEV 5 /* ifindex of device on which packet transmitted (possibly bridge group) */ #define NFULA_IFINDEX_PHYSINDEV 6 /* ifindex of physical device on which packet received (not bridge group) */ #define NFULA_IFINDEX_PHYSOUTDEV 7 /* ifindex of physical device on which packet transmitted (not bridge group) */ #define NFULA_HWADDR 8 /* nflog_hwaddr_t for hardware address */ #define NFULA_PAYLOAD 9 /* packet payload */ #define NFULA_PREFIX 10 /* text string - null-terminated, count includes NUL */ #define NFULA_UID 11 /* UID owning socket on which packet was sent/received */ #define NFULA_SEQ 12 /* sequence number of packets on this NFLOG socket */ #define NFULA_SEQ_GLOBAL 13 /* sequence number of pakets on all NFLOG sockets */ #define NFULA_GID 14 /* GID owning socket on which packet was sent/received */ #define NFULA_HWTYPE 15 /* ARPHRD_ type of skbuff's device */ #define NFULA_HWHEADER 16 /* skbuff's MAC-layer header */ #define NFULA_HWLEN 17 /* length of skbuff's MAC-layer header */ #endif
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