bpf.h
Author: cmaier@cmassoc.net

    /*-
     * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
     *	The Regents of the University of California.  All rights reserved.
     *
     * This code is derived from the Stanford/CMU enet packet filter,
     * (net/enet.c) distributed as part of 4.3BSD, and code contributed
     * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
     * Berkeley Laboratory.
     *
     * 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
     *
     *      @(#)bpf.h       7.1 (Berkeley) 5/7/91
     *
     * @(#) $Header: /tcpdump/master/libpcap/pcap/bpf.h,v 1.19.2.8 2008-09-22 20:16:01 guy Exp $ (LBL)
     */

    /*
     * This is libpcap's cut-down version of bpf.h; it includes only
     * the stuff needed for the code generator and the userland BPF
     * interpreter, and the libpcap APIs for setting filters, etc..
     *
     * "pcap-bpf.c" will include the native OS version, as it deals with
     * the OS's BPF implementation.
     *
     * XXX - should this all just be moved to "pcap.h"?
     */

    #ifndef BPF_MAJOR_VERSION

    #ifdef __cplusplus
    extern "C" {
    #endif

    /* BSD style release date */
    #define BPF_RELEASE 199606

    #ifdef MSDOS /* must be 32-bit */
    typedef long          bpf_int32;
    typedef unsigned long bpf_u_int32;
    #else
    typedef	int bpf_int32;
    typedef	u_int bpf_u_int32;
    #endif

    /*
     * Alignment macros.  BPF_WORDALIGN rounds up to the next
     * even multiple of BPF_ALIGNMENT.
     */
    #ifndef __NetBSD__
    #define BPF_ALIGNMENT sizeof(bpf_int32)
    #else
    #define BPF_ALIGNMENT sizeof(long)
    #endif
    #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1))

    #define BPF_MAXBUFSIZE 0x8000
    #define BPF_MINBUFSIZE 32

    /*
     * Structure for "pcap_compile()", "pcap_setfilter()", etc..
     */
    struct bpf_program {
    	u_int bf_len;
    	struct bpf_insn *bf_insns;
    };

    /*
     * Struct return by BIOCVERSION.  This represents the version number of
     * the filter language described by the instruction encodings below.
     * bpf understands a program iff kernel_major == filter_major &&
     * kernel_minor >= filter_minor, that is, if the value returned by the
     * running kernel has the same major number and a minor number equal
     * equal to or less than the filter being downloaded.  Otherwise, the
     * results are undefined, meaning an error may be returned or packets
     * may be accepted haphazardly.
     * It has nothing to do with the source code version.
     */
    struct bpf_version {
    	u_short bv_major;
    	u_short bv_minor;
    };
    /* Current version number of filter architecture. */
    #define BPF_MAJOR_VERSION 1
    #define BPF_MINOR_VERSION 1

    /*
     * Data-link level type codes.
     *
     * Do *NOT* add new values to this list without asking
     * "tcpdump-workers@lists.tcpdump.org" for a value.  Otherwise, you run
     * the risk of using a value that's already being used for some other
     * purpose, and of having tools that read libpcap-format captures not
     * being able to handle captures with your new DLT_ value, with no hope
     * that they will ever be changed to do so (as that would destroy their
     * ability to read captures using that value for that other purpose).
     */

    /*
     * These are the types that are the same on all platforms, and that
     * have been defined by <net/bpf.h> for ages.
     */
    #define DLT_NULL	0	/* BSD loopback encapsulation */
    #define DLT_EN10MB	1	/* Ethernet (10Mb) */
    #define DLT_EN3MB	2	/* Experimental Ethernet (3Mb) */
    #define DLT_AX25	3	/* Amateur Radio AX.25 */
    #define DLT_PRONET	4	/* Proteon ProNET Token Ring */
    #define DLT_CHAOS	5	/* Chaos */
    #define DLT_IEEE802	6	/* 802.5 Token Ring */
    #define DLT_ARCNET	7	/* ARCNET, with BSD-style header */
    #define DLT_SLIP	8	/* Serial Line IP */
    #define DLT_PPP		9	/* Point-to-point Protocol */
    #define DLT_FDDI	10	/* FDDI */

    /*
     * These are types that are different on some platforms, and that
     * have been defined by <net/bpf.h> for ages.  We use #ifdefs to
     * detect the BSDs that define them differently from the traditional
     * libpcap <net/bpf.h>
     *
     * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS,
     * but I don't know what the right #define is for BSD/OS.
     */
    #define DLT_ATM_RFC1483	11	/* LLC-encapsulated ATM */

    #ifdef __OpenBSD__
    #define DLT_RAW		14	/* raw IP */
    #else
    #define DLT_RAW		12	/* raw IP */
    #endif

    /*
     * Given that the only OS that currently generates BSD/OS SLIP or PPP
     * is, well, BSD/OS, arguably everybody should have chosen its values
     * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they
     * didn't.  So it goes.
     */
    #if defined(__NetBSD__) || defined(__FreeBSD__)
    #ifndef DLT_SLIP_BSDOS
    #define DLT_SLIP_BSDOS	13	/* BSD/OS Serial Line IP */
    #define DLT_PPP_BSDOS	14	/* BSD/OS Point-to-point Protocol */
    #endif
    #else
    #define DLT_SLIP_BSDOS	15	/* BSD/OS Serial Line IP */
    #define DLT_PPP_BSDOS	16	/* BSD/OS Point-to-point Protocol */
    #endif

    /*
     * 17 is used for DLT_OLD_PFLOG in OpenBSD;
     *     OBSOLETE: DLT_PFLOG is 117 in OpenBSD now as well. See below.
     * 18 is used for DLT_PFSYNC in OpenBSD; don't use it for anything else.
     */

    #define DLT_ATM_CLIP	19	/* Linux Classical-IP over ATM */

    /*
     * Apparently Redback uses this for its SmartEdge 400/800.  I hope
     * nobody else decided to use it, too.
     */
    #define DLT_REDBACK_SMARTEDGE	32

    /*
     * These values are defined by NetBSD; other platforms should refrain from
     * using them for other purposes, so that NetBSD savefiles with link
     * types of 50 or 51 can be read as this type on all platforms.
     */
    #define DLT_PPP_SERIAL	50	/* PPP over serial with HDLC encapsulation */
    #define DLT_PPP_ETHER	51	/* PPP over Ethernet */

    /*
     * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses
     * a link-layer type of 99 for the tcpdump it supplies.  The link-layer
     * header has 6 bytes of unknown data, something that appears to be an
     * Ethernet type, and 36 bytes that appear to be 0 in at least one capture
     * I've seen.
     */
    #define DLT_SYMANTEC_FIREWALL	99

    /*
     * Values between 100 and 103 are used in capture file headers as
     * link-layer types corresponding to DLT_ types that differ
     * between platforms; don't use those values for new DLT_ new types.
     */

    /*
     * This value was defined by libpcap 0.5; platforms that have defined
     * it with a different value should define it here with that value -
     * a link type of 104 in a save file will be mapped to DLT_C_HDLC,
     * whatever value that happens to be, so programs will correctly
     * handle files with that link type regardless of the value of
     * DLT_C_HDLC.
     *
     * The name DLT_C_HDLC was used by BSD/OS; we use that name for source
     * compatibility with programs written for BSD/OS.
     *
     * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well,
     * for source compatibility with programs written for libpcap 0.5.
     */
    #define DLT_C_HDLC	104	/* Cisco HDLC */
    #define DLT_CHDLC	DLT_C_HDLC

    #define DLT_IEEE802_11	105	/* IEEE 802.11 wireless */

    /*
     * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW,
     * except when it isn't.  (I.e., sometimes it's just raw IP, and
     * sometimes it isn't.)  We currently handle it as DLT_LINUX_SLL,
     * so that we don't have to worry about the link-layer header.)
     */

    /*
     * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides
     * with other values.
     * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header
     * (DLCI, etc.).
     */
    #define DLT_FRELAY	107

    /*
     * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except
     * that the AF_ type in the link-layer header is in network byte order.
     *
     * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so
     * we don't use 12 for it in OSes other than OpenBSD.
     */
    #ifdef __OpenBSD__
    #define DLT_LOOP	12
    #else
    #define DLT_LOOP	108
    #endif

    /*
     * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's
     * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other
     * than OpenBSD.
     */
    #ifdef __OpenBSD__
    #define DLT_ENC		13
    #else
    #define DLT_ENC		109
    #endif

    /*
     * Values between 110 and 112 are reserved for use in capture file headers
     * as link-layer types corresponding to DLT_ types that might differ
     * between platforms; don't use those values for new DLT_ types
     * other than the corresponding DLT_ types.
     */

    /*
     * This is for Linux cooked sockets.
     */
    #define DLT_LINUX_SLL	113

    /*
     * Apple LocalTalk hardware.
     */
    #define DLT_LTALK	114

    /*
     * Acorn Econet.
     */
    #define DLT_ECONET	115

    /*
     * Reserved for use with OpenBSD ipfilter.
     */
    #define DLT_IPFILTER	116

    /*
     * OpenBSD DLT_PFLOG; DLT_PFLOG is 17 in OpenBSD, but that's DLT_LANE8023
     * in SuSE 6.3, so we can't use 17 for it in capture-file headers.
     *
     * XXX: is there a conflict with DLT_PFSYNC 18 as well?
     */
    #ifdef __OpenBSD__
    #define DLT_OLD_PFLOG	17
    #define DLT_PFSYNC	18
    #endif
    #define DLT_PFLOG	117

    /*
     * Registered for Cisco-internal use.
     */
    #define DLT_CISCO_IOS	118

    /*
     * For 802.11 cards using the Prism II chips, with a link-layer
     * header including Prism monitor mode information plus an 802.11
     * header.
     */
    #define DLT_PRISM_HEADER	119

    /*
     * Reserved for Aironet 802.11 cards, with an Aironet link-layer header
     * (see Doug Ambrisko's FreeBSD patches).
     */
    #define DLT_AIRONET_HEADER	120

    /*
     * Reserved for Siemens HiPath HDLC.
     */
    #define DLT_HHDLC		121

    /*
     * This is for RFC 2625 IP-over-Fibre Channel.
     *
     * This is not for use with raw Fibre Channel, where the link-layer
     * header starts with a Fibre Channel frame header; it's for IP-over-FC,
     * where the link-layer header starts with an RFC 2625 Network_Header
     * field.
     */
    #define DLT_IP_OVER_FC		122

    /*
     * This is for Full Frontal ATM on Solaris with SunATM, with a
     * pseudo-header followed by an AALn PDU.
     *
     * There may be other forms of Full Frontal ATM on other OSes,
     * with different pseudo-headers.
     *
     * If ATM software returns a pseudo-header with VPI/VCI information
     * (and, ideally, packet type information, e.g. signalling, ILMI,
     * LANE, LLC-multiplexed traffic, etc.), it should not use
     * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump
     * and the like don't have to infer the presence or absence of a
     * pseudo-header and the form of the pseudo-header.
     */
    #define DLT_SUNATM		123	/* Solaris+SunATM */

    /*
     * Reserved as per request from Kent Dahlgren <kent@praesum.com>
     * for private use.
     */
    #define DLT_RIO                 124     /* RapidIO */
    #define DLT_PCI_EXP             125     /* PCI Express */
    #define DLT_AURORA              126     /* Xilinx Aurora link layer */

    /*
     * Header for 802.11 plus a number of bits of link-layer information
     * including radio information, used by some recent BSD drivers as
     * well as the madwifi Atheros driver for Linux.
     */
    #define DLT_IEEE802_11_RADIO	127	/* 802.11 plus radiotap radio header */

    /*
     * Reserved for the TZSP encapsulation, as per request from
     * Chris Waters <chris.waters@networkchemistry.com>
     * TZSP is a generic encapsulation for any other link type,
     * which includes a means to include meta-information
     * with the packet, e.g. signal strength and channel
     * for 802.11 packets.
     */
    #define DLT_TZSP                128     /* Tazmen Sniffer Protocol */

    /*
     * BSD's ARCNET headers have the source host, destination host,
     * and type at the beginning of the packet; that's what's handed
     * up to userland via BPF.
     *
     * Linux's ARCNET headers, however, have a 2-byte offset field
     * between the host IDs and the type; that's what's handed up
     * to userland via PF_PACKET sockets.
     *
     * We therefore have to have separate DLT_ values for them.
     */
    #define DLT_ARCNET_LINUX	129	/* ARCNET */

    /*
     * Juniper-private data link types, as per request from
     * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
     * for passing on chassis-internal metainformation such as
     * QOS profiles, etc..
     */
    #define DLT_JUNIPER_MLPPP       130
    #define DLT_JUNIPER_MLFR        131
    #define DLT_JUNIPER_ES          132
    #define DLT_JUNIPER_GGSN        133
    #define DLT_JUNIPER_MFR         134
    #define DLT_JUNIPER_ATM2        135
    #define DLT_JUNIPER_SERVICES    136
    #define DLT_JUNIPER_ATM1        137

    /*
     * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund
     * <dieter@apple.com>.  The header that's presented is an Ethernet-like
     * header:
     *
     *	#define FIREWIRE_EUI64_LEN	8
     *	struct firewire_header {
     *		u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
     *		u_char  firewire_shost[FIREWIRE_EUI64_LEN];
     *		u_short firewire_type;
     *	};
     *
     * with "firewire_type" being an Ethernet type value, rather than,
     * for example, raw GASP frames being handed up.
     */
    #define DLT_APPLE_IP_OVER_IEEE1394	138

    /*
     * Various SS7 encapsulations, as per a request from Jeff Morriss
     * <jeff.morriss[AT]ulticom.com> and subsequent discussions.
     */
    #define DLT_MTP2_WITH_PHDR	139	/* pseudo-header with various info, followed by MTP2 */
    #define DLT_MTP2		140	/* MTP2, without pseudo-header */
    #define DLT_MTP3		141	/* MTP3, without pseudo-header or MTP2 */
    #define DLT_SCCP		142	/* SCCP, without pseudo-header or MTP2 or MTP3 */

    /*
     * DOCSIS MAC frames.
     */
    #define DLT_DOCSIS		143

    /*
     * Linux-IrDA packets. Protocol defined at http://www.irda.org.
     * Those packets include IrLAP headers and above (IrLMP...), but
     * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy
     * framing can be handled by the hardware and depend on the bitrate.
     * This is exactly the format you would get capturing on a Linux-IrDA
     * interface (irdaX), but not on a raw serial port.
     * Note the capture is done in "Linux-cooked" mode, so each packet include
     * a fake packet header (struct sll_header). This is because IrDA packet
     * decoding is dependant on the direction of the packet (incomming or
     * outgoing).
     * When/if other platform implement IrDA capture, we may revisit the
     * issue and define a real DLT_IRDA...
     * Jean II
     */
    #define DLT_LINUX_IRDA		144

    /*
     * Reserved for IBM SP switch and IBM Next Federation switch.
     */
    #define DLT_IBM_SP		145
    #define DLT_IBM_SN		146

    /*
     * Reserved for private use.  If you have some link-layer header type
     * that you want to use within your organization, with the capture files
     * using that link-layer header type not ever be sent outside your
     * organization, you can use these values.
     *
     * No libpcap release will use these for any purpose, nor will any
     * tcpdump release use them, either.
     *
     * Do *NOT* use these in capture files that you expect anybody not using
     * your private versions of capture-file-reading tools to read; in
     * particular, do *NOT* use them in products, otherwise you may find that
     * people won't be able to use tcpdump, or snort, or Ethereal, or... to
     * read capture files from your firewall/intrusion detection/traffic
     * monitoring/etc. appliance, or whatever product uses that DLT_ value,
     * and you may also find that the developers of those applications will
     * not accept patches to let them read those files.
     *
     * Also, do not use them if somebody might send you a capture using them
     * for *their* private type and tools using them for *your* private type
     * would have to read them.
     *
     * Instead, ask "tcpdump-workers@lists.tcpdump.org" for a new DLT_ value,
     * as per the comment above, and use the type you're given.
     */
    #define DLT_USER0		147
    #define DLT_USER1		148
    #define DLT_USER2		149
    #define DLT_USER3		150
    #define DLT_USER4		151
    #define DLT_USER5		152
    #define DLT_USER6		153
    #define DLT_USER7		154
    #define DLT_USER8		155
    #define DLT_USER9		156
    #define DLT_USER10		157
    #define DLT_USER11		158
    #define DLT_USER12		159
    #define DLT_USER13		160
    #define DLT_USER14		161
    #define DLT_USER15		162

    /*
     * For future use with 802.11 captures - defined by AbsoluteValue
     * Systems to store a number of bits of link-layer information
     * including radio information:
     *
     *	http://www.shaftnet.org/~pizza/software/capturefrm.txt
     *
     * but it might be used by some non-AVS drivers now or in the
     * future.
     */
    #define DLT_IEEE802_11_RADIO_AVS 163	/* 802.11 plus AVS radio header */

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
     * for passing on chassis-internal metainformation such as
     * QOS profiles, etc..
     */
    #define DLT_JUNIPER_MONITOR     164

    /*
     * Reserved for BACnet MS/TP.
     */
    #define DLT_BACNET_MS_TP	165

    /*
     * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>.
     *
     * This is used in some OSes to allow a kernel socket filter to distinguish
     * between incoming and outgoing packets, on a socket intended to
     * supply pppd with outgoing packets so it can do dial-on-demand and
     * hangup-on-lack-of-demand; incoming packets are filtered out so they
     * don't cause pppd to hold the connection up (you don't want random
     * input packets such as port scans, packets from old lost connections,
     * etc. to force the connection to stay up).
     *
     * The first byte of the PPP header (0xff03) is modified to accomodate
     * the direction - 0x00 = IN, 0x01 = OUT.
     */
    #define DLT_PPP_PPPD		166

    /*
     * Names for backwards compatibility with older versions of some PPP
     * software; new software should use DLT_PPP_PPPD.
     */
    #define DLT_PPP_WITH_DIRECTION	DLT_PPP_PPPD
    #define DLT_LINUX_PPP_WITHDIRECTION	DLT_PPP_PPPD

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
     * for passing on chassis-internal metainformation such as
     * QOS profiles, cookies, etc..
     */
    #define DLT_JUNIPER_PPPOE       167
    #define DLT_JUNIPER_PPPOE_ATM   168

    #define DLT_GPRS_LLC		169	/* GPRS LLC */
    #define DLT_GPF_T		170	/* GPF-T (ITU-T G.7041/Y.1303) */
    #define DLT_GPF_F		171	/* GPF-F (ITU-T G.7041/Y.1303) */

    /*
     * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line
     * monitoring equipment.
     */
    #define DLT_GCOM_T1E1		172
    #define DLT_GCOM_SERIAL		173

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.  The DLT_ is used
     * for internal communication to Physical Interface Cards (PIC)
     */
    #define DLT_JUNIPER_PIC_PEER    174

    /*
     * Link types requested by Gregor Maier <gregor@endace.com> of Endace
     * Measurement Systems.  They add an ERF header (see
     * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
     * the link-layer header.
     */
    #define DLT_ERF_ETH		175	/* Ethernet */
    #define DLT_ERF_POS		176	/* Packet-over-SONET */

    /*
     * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD
     * for vISDN (http://www.orlandi.com/visdn/).  Its link-layer header
     * includes additional information before the LAPD header, so it's
     * not necessarily a generic LAPD header.
     */
    #define DLT_LINUX_LAPD		177

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.
     * The DLT_ are used for prepending meta-information
     * like interface index, interface name
     * before standard Ethernet, PPP, Frelay & C-HDLC Frames
     */
    #define DLT_JUNIPER_ETHER       178
    #define DLT_JUNIPER_PPP         179
    #define DLT_JUNIPER_FRELAY      180
    #define DLT_JUNIPER_CHDLC       181

    /*
     * Multi Link Frame Relay (FRF.16)
     */
    #define DLT_MFR                 182

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.
     * The DLT_ is used for internal communication with a
     * voice Adapter Card (PIC)
     */
    #define DLT_JUNIPER_VP          183

    /*
     * Arinc 429 frames.
     * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
     * Every frame contains a 32bit A429 label.
     * More documentation on Arinc 429 can be found at
     * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf
     */
    #define DLT_A429                184

    /*
     * Arinc 653 Interpartition Communication messages.
     * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
     * Please refer to the A653-1 standard for more information.
     */
    #define DLT_A653_ICM            185

    /*
     * USB packets, beginning with a USB setup header; requested by
     * Paolo Abeni <paolo.abeni@email.it>.
     */
    #define DLT_USB			186

    /*
     * Bluetooth HCI UART transport layer (part H:4); requested by
     * Paolo Abeni.
     */
    #define DLT_BLUETOOTH_HCI_H4	187

    /*
     * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz
     * <cruz_petagay@bah.com>.
     */
    #define DLT_IEEE802_16_MAC_CPS	188

    /*
     * USB packets, beginning with a Linux USB header; requested by
     * Paolo Abeni <paolo.abeni@email.it>.
     */
    #define DLT_USB_LINUX		189

    /*
     * Controller Area Network (CAN) v. 2.0B packets.
     * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
     * Used to dump CAN packets coming from a CAN Vector board.
     * More documentation on the CAN v2.0B frames can be found at
     * http://www.can-cia.org/downloads/?269
     */
    #define DLT_CAN20B              190

    /*
     * IEEE 802.15.4, with address fields padded, as is done by Linux
     * drivers; requested by Juergen Schimmer.
     */
    #define DLT_IEEE802_15_4_LINUX	191

    /*
     * Per Packet Information encapsulated packets.
     * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
     */
    #define DLT_PPI			192

    /*
     * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header;
     * requested by Charles Clancy.
     */
    #define DLT_IEEE802_16_MAC_CPS_RADIO	193

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.
     * The DLT_ is used for internal communication with a
     * integrated service module (ISM).
     */
    #define DLT_JUNIPER_ISM         194

    /*
     * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
     * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>.
     */
    #define DLT_IEEE802_15_4	195

    /*
     * Various link-layer types, with a pseudo-header, for SITA
     * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com).
     */
    #define DLT_SITA		196

    /*
     * Various link-layer types, with a pseudo-header, for Endace DAG cards;
     * encapsulates Endace ERF records.  Requested by Stephen Donnelly
     * <stephen@endace.com>.
     */
    #define DLT_ERF			197

    /*
     * Special header prepended to Ethernet packets when capturing from a
     * u10 Networks board.  Requested by Phil Mulholland
     * <phil@u10networks.com>.
     */
    #define DLT_RAIF1		198

    /*
     * IPMB packet for IPMI, beginning with the I2C slave address, followed
     * by the netFn and LUN, etc..  Requested by Chanthy Toeung
     * <chanthy.toeung@ca.kontron.com>.
     */
    #define DLT_IPMB		199

    /*
     * Juniper-private data link type, as per request from
     * Hannes Gredler <hannes@juniper.net>.
     * The DLT_ is used for capturing data on a secure tunnel interface.
     */
    #define DLT_JUNIPER_ST          200

    /*
     * Bluetooth HCI UART transport layer (part H:4), with pseudo-header
     * that includes direction information; requested by Paolo Abeni.
     */
    #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR	201

    /*
     * AX.25 packet with a 1-byte KISS header; see
     *
     *	http://www.ax25.net/kiss.htm
     *
     * as per Richard Stearn <richard@rns-stearn.demon.co.uk>.
     */
    #define DLT_AX25_KISS		202

    /*
     * LAPD packets from an ISDN channel, starting with the address field,
     * with no pseudo-header.
     * Requested by Varuna De Silva <varunax@gmail.com>.
     */
    #define DLT_LAPD		203

    /*
     * Variants of various link-layer headers, with a one-byte direction
     * pseudo-header prepended - zero means "received by this host",
     * non-zero (any non-zero value) means "sent by this host" - as per
     * Will Barker <w.barker@zen.co.uk>.
     */
    #define DLT_PPP_WITH_DIR	204	/* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */
    #define DLT_C_HDLC_WITH_DIR	205	/* Cisco HDLC */
    #define DLT_FRELAY_WITH_DIR	206	/* Frame Relay */
    #define DLT_LAPB_WITH_DIR	207	/* LAPB */

    /*
     * 208 is reserved for an as-yet-unspecified proprietary link-layer
     * type, as requested by Will Barker.
     */

    /*
     * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman
     * <avn@pigeonpoint.com>.
     */
    #define DLT_IPMB_LINUX		209

    /*
     * FlexRay automotive bus - http://www.flexray.com/ - as requested
     * by Hannes Kaelber <hannes.kaelber@x2e.de>.
     */
    #define DLT_FLEXRAY		210

    /*
     * Media Oriented Systems Transport (MOST) bus for multimedia
     * transport - http://www.mostcooperation.com/ - as requested
     * by Hannes Kaelber <hannes.kaelber@x2e.de>.
     */
    #define DLT_MOST		211

    /*
     * Local Interconnect Network (LIN) bus for vehicle networks -
     * http://www.lin-subbus.org/ - as requested by Hannes Kaelber
     * <hannes.kaelber@x2e.de>.
     */
    #define DLT_LIN			212

    /*
     * X2E-private data link type used for serial line capture,
     * as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
     */
    #define DLT_X2E_SERIAL		213

    /*
     * X2E-private data link type used for the Xoraya data logger
     * family, as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
     */
    #define DLT_X2E_XORAYA		214

    /*
     * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
     * nothing), but with the PHY-level data for non-ASK PHYs (4 octets
     * of 0 as preamble, one octet of SFD, one octet of frame length+
     * reserved bit, and then the MAC-layer data, starting with the
     * frame control field).
     *
     * Requested by Max Filippov <jcmvbkbc@gmail.com>.
     */
    #define DLT_IEEE802_15_4_NONASK_PHY	215

    /*
     * DLT and savefile link type values are split into a class and
     * a member of that class.  A class value of 0 indicates a regular
     * DLT_/LINKTYPE_ value.
     */
    #define DLT_CLASS(x)		((x) & 0x03ff0000)

    /*
     * NetBSD-specific generic "raw" link type.  The class value indicates
     * that this is the generic raw type, and the lower 16 bits are the
     * address family we're dealing with.  Those values are NetBSD-specific;
     * do not assume that they correspond to AF_ values for your operating
     * system.
     */
    #define	DLT_CLASS_NETBSD_RAWAF	0x02240000
    #define	DLT_NETBSD_RAWAF(af)	(DLT_CLASS_NETBSD_RAWAF | (af))
    #define	DLT_NETBSD_RAWAF_AF(x)	((x) & 0x0000ffff)
    #define	DLT_IS_NETBSD_RAWAF(x)	(DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF)

    /*
     * The instruction encodings.
     */
    /* instruction classes */
    #define BPF_CLASS(code) ((code) & 0x07)
    #define		BPF_LD		0x00
    #define		BPF_LDX		0x01
    #define		BPF_ST		0x02
    #define		BPF_STX		0x03
    #define		BPF_ALU		0x04
    #define		BPF_JMP		0x05
    #define		BPF_RET		0x06
    #define		BPF_MISC	0x07

    /* ld/ldx fields */
    #define BPF_SIZE(code)	((code) & 0x18)
    #define		BPF_W		0x00
    #define		BPF_H		0x08
    #define		BPF_B		0x10
    #define BPF_MODE(code)	((code) & 0xe0)
    #define		BPF_IMM 	0x00
    #define		BPF_ABS		0x20
    #define		BPF_IND		0x40
    #define		BPF_MEM		0x60
    #define		BPF_LEN		0x80
    #define		BPF_MSH		0xa0

    /* alu/jmp fields */
    #define BPF_OP(code)	((code) & 0xf0)
    #define		BPF_ADD		0x00
    #define		BPF_SUB		0x10
    #define		BPF_MUL		0x20
    #define		BPF_DIV		0x30
    #define		BPF_OR		0x40
    #define		BPF_AND		0x50
    #define		BPF_LSH		0x60
    #define		BPF_RSH		0x70
    #define		BPF_NEG		0x80
    #define		BPF_JA		0x00
    #define		BPF_JEQ		0x10
    #define		BPF_JGT		0x20
    #define		BPF_JGE		0x30
    #define		BPF_JSET	0x40
    #define BPF_SRC(code)	((code) & 0x08)
    #define		BPF_K		0x00
    #define		BPF_X		0x08

    /* ret - BPF_K and BPF_X also apply */
    #define BPF_RVAL(code)	((code) & 0x18)
    #define		BPF_A		0x10

    /* misc */
    #define BPF_MISCOP(code) ((code) & 0xf8)
    #define		BPF_TAX		0x00
    #define		BPF_TXA		0x80

    /*
     * The instruction data structure.
     */
    struct bpf_insn {
    	u_short	code;
    	u_char 	jt;
    	u_char 	jf;
    	bpf_u_int32 k;
    };

    /*
     * Macros for insn array initializers.
     */
    #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
    #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }

    #if __STDC__ || defined(__cplusplus)
    extern int bpf_validate(const struct bpf_insn *, int);
    extern u_int bpf_filter(const struct bpf_insn *, const u_char *, u_int, u_int);
    #else
    extern int bpf_validate();
    extern u_int bpf_filter();
    #endif

    /*
     * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST).
     */
    #define BPF_MEMWORDS 16

    #ifdef __cplusplus
    }
    #endif

    #endif

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