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      1 /*-
      2  * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This code is derived from the Stanford/CMU enet packet filter,
      6  * (net/enet.c) distributed as part of 4.3BSD, and code contributed
      7  * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence
      8  * Berkeley Laboratory.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *      This product includes software developed by the University of
     21  *      California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *      @(#)bpf.h       7.1 (Berkeley) 5/7/91
     39  */
     40 
     41 #ifndef lib_pcap_dlt_h
     42 #define lib_pcap_dlt_h
     43 
     44 /*
     45  * Link-layer header type codes.
     46  *
     47  * Do *NOT* add new values to this list without asking
     48  * "tcpdump-workers (at) lists.tcpdump.org" for a value.  Otherwise, you run
     49  * the risk of using a value that's already being used for some other
     50  * purpose, and of having tools that read libpcap-format captures not
     51  * being able to handle captures with your new DLT_ value, with no hope
     52  * that they will ever be changed to do so (as that would destroy their
     53  * ability to read captures using that value for that other purpose).
     54  *
     55  * See
     56  *
     57  *	http://www.tcpdump.org/linktypes.html
     58  *
     59  * for detailed descriptions of some of these link-layer header types.
     60  */
     61 
     62 /*
     63  * These are the types that are the same on all platforms, and that
     64  * have been defined by <net/bpf.h> for ages.
     65  */
     66 #define DLT_NULL	0	/* BSD loopback encapsulation */
     67 #define DLT_EN10MB	1	/* Ethernet (10Mb) */
     68 #define DLT_EN3MB	2	/* Experimental Ethernet (3Mb) */
     69 #define DLT_AX25	3	/* Amateur Radio AX.25 */
     70 #define DLT_PRONET	4	/* Proteon ProNET Token Ring */
     71 #define DLT_CHAOS	5	/* Chaos */
     72 #define DLT_IEEE802	6	/* 802.5 Token Ring */
     73 #define DLT_ARCNET	7	/* ARCNET, with BSD-style header */
     74 #define DLT_SLIP	8	/* Serial Line IP */
     75 #define DLT_PPP		9	/* Point-to-point Protocol */
     76 #define DLT_FDDI	10	/* FDDI */
     77 
     78 /*
     79  * These are types that are different on some platforms, and that
     80  * have been defined by <net/bpf.h> for ages.  We use #ifdefs to
     81  * detect the BSDs that define them differently from the traditional
     82  * libpcap <net/bpf.h>
     83  *
     84  * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS,
     85  * but I don't know what the right #define is for BSD/OS.
     86  */
     87 #define DLT_ATM_RFC1483	11	/* LLC-encapsulated ATM */
     88 
     89 #ifdef __OpenBSD__
     90 #define DLT_RAW		14	/* raw IP */
     91 #else
     92 #define DLT_RAW		12	/* raw IP */
     93 #endif
     94 
     95 /*
     96  * Given that the only OS that currently generates BSD/OS SLIP or PPP
     97  * is, well, BSD/OS, arguably everybody should have chosen its values
     98  * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they
     99  * didn't.  So it goes.
    100  */
    101 #if defined(__NetBSD__) || defined(__FreeBSD__)
    102 #ifndef DLT_SLIP_BSDOS
    103 #define DLT_SLIP_BSDOS	13	/* BSD/OS Serial Line IP */
    104 #define DLT_PPP_BSDOS	14	/* BSD/OS Point-to-point Protocol */
    105 #endif
    106 #else
    107 #define DLT_SLIP_BSDOS	15	/* BSD/OS Serial Line IP */
    108 #define DLT_PPP_BSDOS	16	/* BSD/OS Point-to-point Protocol */
    109 #endif
    110 
    111 /*
    112  * 17 was used for DLT_PFLOG in OpenBSD; it no longer is.
    113  *
    114  * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG
    115  * as 117 so that pflog captures would use a link-layer header type
    116  * value that didn't collide with any other values.  On all
    117  * platforms other than OpenBSD, we defined DLT_PFLOG as 117,
    118  * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG.
    119  *
    120  * OpenBSD eventually switched to using 117 for DLT_PFLOG as well.
    121  *
    122  * Don't use 17 for anything else.
    123  */
    124 
    125 /*
    126  * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and
    127  * Mac OS X; don't use it for anything else.  (FreeBSD uses 121,
    128  * which collides with DLT_HHDLC, even though it doesn't use 18
    129  * for anything and doesn't appear to have ever used it for anything.)
    130  *
    131  * We define it as 18 on those platforms; it is, unfortunately, used
    132  * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC
    133  * in general.  As the packet format for it, like that for
    134  * DLT_PFLOG, is not only OS-dependent but OS-version-dependent,
    135  * we don't support printing it in tcpdump except on OSes that
    136  * have the relevant header files, so it's not that useful on
    137  * other platforms.
    138  */
    139 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__)
    140 #define DLT_PFSYNC	18
    141 #endif
    142 
    143 #define DLT_ATM_CLIP	19	/* Linux Classical-IP over ATM */
    144 
    145 /*
    146  * Apparently Redback uses this for its SmartEdge 400/800.  I hope
    147  * nobody else decided to use it, too.
    148  */
    149 #define DLT_REDBACK_SMARTEDGE	32
    150 
    151 /*
    152  * These values are defined by NetBSD; other platforms should refrain from
    153  * using them for other purposes, so that NetBSD savefiles with link
    154  * types of 50 or 51 can be read as this type on all platforms.
    155  */
    156 #define DLT_PPP_SERIAL	50	/* PPP over serial with HDLC encapsulation */
    157 #define DLT_PPP_ETHER	51	/* PPP over Ethernet */
    158 
    159 /*
    160  * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses
    161  * a link-layer type of 99 for the tcpdump it supplies.  The link-layer
    162  * header has 6 bytes of unknown data, something that appears to be an
    163  * Ethernet type, and 36 bytes that appear to be 0 in at least one capture
    164  * I've seen.
    165  */
    166 #define DLT_SYMANTEC_FIREWALL	99
    167 
    168 /*
    169  * Values between 100 and 103 are used in capture file headers as
    170  * link-layer header type LINKTYPE_ values corresponding to DLT_ types
    171  * that differ between platforms; don't use those values for new DLT_
    172  * new types.
    173  */
    174 
    175 /*
    176  * Values starting with 104 are used for newly-assigned link-layer
    177  * header type values; for those link-layer header types, the DLT_
    178  * value returned by pcap_datalink() and passed to pcap_open_dead(),
    179  * and the LINKTYPE_ value that appears in capture files, are the
    180  * same.
    181  *
    182  * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is
    183  * the highest such value.
    184  */
    185 #define DLT_MATCHING_MIN	104
    186 
    187 /*
    188  * This value was defined by libpcap 0.5; platforms that have defined
    189  * it with a different value should define it here with that value -
    190  * a link type of 104 in a save file will be mapped to DLT_C_HDLC,
    191  * whatever value that happens to be, so programs will correctly
    192  * handle files with that link type regardless of the value of
    193  * DLT_C_HDLC.
    194  *
    195  * The name DLT_C_HDLC was used by BSD/OS; we use that name for source
    196  * compatibility with programs written for BSD/OS.
    197  *
    198  * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well,
    199  * for source compatibility with programs written for libpcap 0.5.
    200  */
    201 #define DLT_C_HDLC	104	/* Cisco HDLC */
    202 #define DLT_CHDLC	DLT_C_HDLC
    203 
    204 #define DLT_IEEE802_11	105	/* IEEE 802.11 wireless */
    205 
    206 /*
    207  * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW,
    208  * except when it isn't.  (I.e., sometimes it's just raw IP, and
    209  * sometimes it isn't.)  We currently handle it as DLT_LINUX_SLL,
    210  * so that we don't have to worry about the link-layer header.)
    211  */
    212 
    213 /*
    214  * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides
    215  * with other values.
    216  * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header
    217  * (DLCI, etc.).
    218  */
    219 #define DLT_FRELAY	107
    220 
    221 /*
    222  * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except
    223  * that the AF_ type in the link-layer header is in network byte order.
    224  *
    225  * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so
    226  * we don't use 12 for it in OSes other than OpenBSD.
    227  */
    228 #ifdef __OpenBSD__
    229 #define DLT_LOOP	12
    230 #else
    231 #define DLT_LOOP	108
    232 #endif
    233 
    234 /*
    235  * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's
    236  * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other
    237  * than OpenBSD.
    238  */
    239 #ifdef __OpenBSD__
    240 #define DLT_ENC		13
    241 #else
    242 #define DLT_ENC		109
    243 #endif
    244 
    245 /*
    246  * Values between 110 and 112 are reserved for use in capture file headers
    247  * as link-layer types corresponding to DLT_ types that might differ
    248  * between platforms; don't use those values for new DLT_ types
    249  * other than the corresponding DLT_ types.
    250  */
    251 
    252 /*
    253  * This is for Linux cooked sockets.
    254  */
    255 #define DLT_LINUX_SLL	113
    256 
    257 /*
    258  * Apple LocalTalk hardware.
    259  */
    260 #define DLT_LTALK	114
    261 
    262 /*
    263  * Acorn Econet.
    264  */
    265 #define DLT_ECONET	115
    266 
    267 /*
    268  * Reserved for use with OpenBSD ipfilter.
    269  */
    270 #define DLT_IPFILTER	116
    271 
    272 /*
    273  * OpenBSD DLT_PFLOG.
    274  */
    275 #define DLT_PFLOG	117
    276 
    277 /*
    278  * Registered for Cisco-internal use.
    279  */
    280 #define DLT_CISCO_IOS	118
    281 
    282 /*
    283  * For 802.11 cards using the Prism II chips, with a link-layer
    284  * header including Prism monitor mode information plus an 802.11
    285  * header.
    286  */
    287 #define DLT_PRISM_HEADER	119
    288 
    289 /*
    290  * Reserved for Aironet 802.11 cards, with an Aironet link-layer header
    291  * (see Doug Ambrisko's FreeBSD patches).
    292  */
    293 #define DLT_AIRONET_HEADER	120
    294 
    295 /*
    296  * Sigh.
    297  *
    298  * 121 was reserved for Siemens HiPath HDLC on 2002-01-25, as
    299  * requested by Tomas Kukosa.
    300  *
    301  * On 2004-02-25, a FreeBSD checkin to sys/net/bpf.h was made that
    302  * assigned 121 as DLT_PFSYNC.  In current versions, its libpcap
    303  * does DLT_ <-> LINKTYPE_ mapping, mapping DLT_PFSYNC to a
    304  * LINKTYPE_PFSYNC value of 246, so it should write out DLT_PFSYNC
    305  * dump files with 246 as the link-layer header type.  (Earlier
    306  * versions might not have done mapping, in which case they would
    307  * have written them out with a link-layer header type of 121.)
    308  *
    309  * OpenBSD, from which pf came, however, uses 18 for DLT_PFSYNC;
    310  * its libpcap does no DLT_ <-> LINKTYPE_ mapping, so it would
    311  * write out DLT_PFSYNC dump files with use 18 as the link-layer
    312  * header type.
    313  *
    314  * NetBSD, DragonFly BSD, and Darwin also use 18 for DLT_PFSYNC; in
    315  * current versions, their libpcaps do DLT_ <-> LINKTYPE_ mapping,
    316  * mapping DLT_PFSYNC to a LINKTYPE_PFSYNC value of 246, so they
    317  * should write out DLT_PFSYNC dump files with 246 as the link-layer
    318  * header type.  (Earlier versions might not have done mapping,
    319  * in which case they'd work the same way OpenBSD does, writing
    320  * them out with a link-layer header type of 18.)
    321  *
    322  * We'll define DLT_PFSYNC as:
    323  *
    324  *    18 on NetBSD, OpenBSD, DragonFly BSD, and Darwin;
    325  *
    326  *    121 on FreeBSD;
    327  *
    328  *    246 everywhere else.
    329  *
    330  * We'll define DLT_HHDLC as 121 on everything except for FreeBSD;
    331  * anybody who wants to compile, on FreeBSD, code that uses DLT_HHDLC
    332  * is out of luck.
    333  *
    334  * We'll define LINKTYPE_PFSYNC as 246 on *all* platforms, so that
    335  * savefiles written using *this* code won't use 18 or 121 for PFSYNC,
    336  * they'll all use 246.
    337  *
    338  * Code that uses pcap_datalink() to determine the link-layer header
    339  * type of a savefile won't, when built and run on FreeBSD, be able
    340  * to distinguish between LINKTYPE_PFSYNC and LINKTYPE_HHDLC capture
    341  * files, as pcap_datalink() will give 121 for both of them.  Code
    342  * that doesn't, such as the code in Wireshark, will be able to
    343  * distinguish between them.
    344  *
    345  * FreeBSD's libpcap won't map a link-layer header type of 18 - i.e.,
    346  * DLT_PFSYNC files from OpenBSD and possibly older versions of NetBSD,
    347  * DragonFly BSD, and OS X - to DLT_PFSYNC, so code built with FreeBSD's
    348  * libpcap won't treat those files as DLT_PFSYNC files.
    349  *
    350  * Other libpcaps won't map a link-layer header type of 121 to DLT_PFSYNC;
    351  * this means they can read DLT_HHDLC files, if any exist, but won't
    352  * treat pcap files written by any older versions of FreeBSD libpcap that
    353  * didn't map to 246 as DLT_PFSYNC files.
    354  */
    355 #ifdef __FreeBSD__
    356 #define DLT_PFSYNC		121
    357 #else
    358 #define DLT_HHDLC		121
    359 #endif
    360 
    361 /*
    362  * This is for RFC 2625 IP-over-Fibre Channel.
    363  *
    364  * This is not for use with raw Fibre Channel, where the link-layer
    365  * header starts with a Fibre Channel frame header; it's for IP-over-FC,
    366  * where the link-layer header starts with an RFC 2625 Network_Header
    367  * field.
    368  */
    369 #define DLT_IP_OVER_FC		122
    370 
    371 /*
    372  * This is for Full Frontal ATM on Solaris with SunATM, with a
    373  * pseudo-header followed by an AALn PDU.
    374  *
    375  * There may be other forms of Full Frontal ATM on other OSes,
    376  * with different pseudo-headers.
    377  *
    378  * If ATM software returns a pseudo-header with VPI/VCI information
    379  * (and, ideally, packet type information, e.g. signalling, ILMI,
    380  * LANE, LLC-multiplexed traffic, etc.), it should not use
    381  * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump
    382  * and the like don't have to infer the presence or absence of a
    383  * pseudo-header and the form of the pseudo-header.
    384  */
    385 #define DLT_SUNATM		123	/* Solaris+SunATM */
    386 
    387 /*
    388  * Reserved as per request from Kent Dahlgren <kent (at) praesum.com>
    389  * for private use.
    390  */
    391 #define DLT_RIO                 124     /* RapidIO */
    392 #define DLT_PCI_EXP             125     /* PCI Express */
    393 #define DLT_AURORA              126     /* Xilinx Aurora link layer */
    394 
    395 /*
    396  * Header for 802.11 plus a number of bits of link-layer information
    397  * including radio information, used by some recent BSD drivers as
    398  * well as the madwifi Atheros driver for Linux.
    399  */
    400 #define DLT_IEEE802_11_RADIO	127	/* 802.11 plus radiotap radio header */
    401 
    402 /*
    403  * Reserved for the TZSP encapsulation, as per request from
    404  * Chris Waters <chris.waters (at) networkchemistry.com>
    405  * TZSP is a generic encapsulation for any other link type,
    406  * which includes a means to include meta-information
    407  * with the packet, e.g. signal strength and channel
    408  * for 802.11 packets.
    409  */
    410 #define DLT_TZSP                128     /* Tazmen Sniffer Protocol */
    411 
    412 /*
    413  * BSD's ARCNET headers have the source host, destination host,
    414  * and type at the beginning of the packet; that's what's handed
    415  * up to userland via BPF.
    416  *
    417  * Linux's ARCNET headers, however, have a 2-byte offset field
    418  * between the host IDs and the type; that's what's handed up
    419  * to userland via PF_PACKET sockets.
    420  *
    421  * We therefore have to have separate DLT_ values for them.
    422  */
    423 #define DLT_ARCNET_LINUX	129	/* ARCNET */
    424 
    425 /*
    426  * Juniper-private data link types, as per request from
    427  * Hannes Gredler <hannes (at) juniper.net>.  The DLT_s are used
    428  * for passing on chassis-internal metainformation such as
    429  * QOS profiles, etc..
    430  */
    431 #define DLT_JUNIPER_MLPPP       130
    432 #define DLT_JUNIPER_MLFR        131
    433 #define DLT_JUNIPER_ES          132
    434 #define DLT_JUNIPER_GGSN        133
    435 #define DLT_JUNIPER_MFR         134
    436 #define DLT_JUNIPER_ATM2        135
    437 #define DLT_JUNIPER_SERVICES    136
    438 #define DLT_JUNIPER_ATM1        137
    439 
    440 /*
    441  * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund
    442  * <dieter (at) apple.com>.  The header that's presented is an Ethernet-like
    443  * header:
    444  *
    445  *	#define FIREWIRE_EUI64_LEN	8
    446  *	struct firewire_header {
    447  *		u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
    448  *		u_char  firewire_shost[FIREWIRE_EUI64_LEN];
    449  *		u_short firewire_type;
    450  *	};
    451  *
    452  * with "firewire_type" being an Ethernet type value, rather than,
    453  * for example, raw GASP frames being handed up.
    454  */
    455 #define DLT_APPLE_IP_OVER_IEEE1394	138
    456 
    457 /*
    458  * Various SS7 encapsulations, as per a request from Jeff Morriss
    459  * <jeff.morriss[AT]ulticom.com> and subsequent discussions.
    460  */
    461 #define DLT_MTP2_WITH_PHDR	139	/* pseudo-header with various info, followed by MTP2 */
    462 #define DLT_MTP2		140	/* MTP2, without pseudo-header */
    463 #define DLT_MTP3		141	/* MTP3, without pseudo-header or MTP2 */
    464 #define DLT_SCCP		142	/* SCCP, without pseudo-header or MTP2 or MTP3 */
    465 
    466 /*
    467  * DOCSIS MAC frames.
    468  */
    469 #define DLT_DOCSIS		143
    470 
    471 /*
    472  * Linux-IrDA packets. Protocol defined at http://www.irda.org.
    473  * Those packets include IrLAP headers and above (IrLMP...), but
    474  * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy
    475  * framing can be handled by the hardware and depend on the bitrate.
    476  * This is exactly the format you would get capturing on a Linux-IrDA
    477  * interface (irdaX), but not on a raw serial port.
    478  * Note the capture is done in "Linux-cooked" mode, so each packet include
    479  * a fake packet header (struct sll_header). This is because IrDA packet
    480  * decoding is dependant on the direction of the packet (incomming or
    481  * outgoing).
    482  * When/if other platform implement IrDA capture, we may revisit the
    483  * issue and define a real DLT_IRDA...
    484  * Jean II
    485  */
    486 #define DLT_LINUX_IRDA		144
    487 
    488 /*
    489  * Reserved for IBM SP switch and IBM Next Federation switch.
    490  */
    491 #define DLT_IBM_SP		145
    492 #define DLT_IBM_SN		146
    493 
    494 /*
    495  * Reserved for private use.  If you have some link-layer header type
    496  * that you want to use within your organization, with the capture files
    497  * using that link-layer header type not ever be sent outside your
    498  * organization, you can use these values.
    499  *
    500  * No libpcap release will use these for any purpose, nor will any
    501  * tcpdump release use them, either.
    502  *
    503  * Do *NOT* use these in capture files that you expect anybody not using
    504  * your private versions of capture-file-reading tools to read; in
    505  * particular, do *NOT* use them in products, otherwise you may find that
    506  * people won't be able to use tcpdump, or snort, or Ethereal, or... to
    507  * read capture files from your firewall/intrusion detection/traffic
    508  * monitoring/etc. appliance, or whatever product uses that DLT_ value,
    509  * and you may also find that the developers of those applications will
    510  * not accept patches to let them read those files.
    511  *
    512  * Also, do not use them if somebody might send you a capture using them
    513  * for *their* private type and tools using them for *your* private type
    514  * would have to read them.
    515  *
    516  * Instead, ask "tcpdump-workers (at) lists.tcpdump.org" for a new DLT_ value,
    517  * as per the comment above, and use the type you're given.
    518  */
    519 #define DLT_USER0		147
    520 #define DLT_USER1		148
    521 #define DLT_USER2		149
    522 #define DLT_USER3		150
    523 #define DLT_USER4		151
    524 #define DLT_USER5		152
    525 #define DLT_USER6		153
    526 #define DLT_USER7		154
    527 #define DLT_USER8		155
    528 #define DLT_USER9		156
    529 #define DLT_USER10		157
    530 #define DLT_USER11		158
    531 #define DLT_USER12		159
    532 #define DLT_USER13		160
    533 #define DLT_USER14		161
    534 #define DLT_USER15		162
    535 
    536 /*
    537  * For future use with 802.11 captures - defined by AbsoluteValue
    538  * Systems to store a number of bits of link-layer information
    539  * including radio information:
    540  *
    541  *	http://www.shaftnet.org/~pizza/software/capturefrm.txt
    542  *
    543  * but it might be used by some non-AVS drivers now or in the
    544  * future.
    545  */
    546 #define DLT_IEEE802_11_RADIO_AVS 163	/* 802.11 plus AVS radio header */
    547 
    548 /*
    549  * Juniper-private data link type, as per request from
    550  * Hannes Gredler <hannes (at) juniper.net>.  The DLT_s are used
    551  * for passing on chassis-internal metainformation such as
    552  * QOS profiles, etc..
    553  */
    554 #define DLT_JUNIPER_MONITOR     164
    555 
    556 /*
    557  * BACnet MS/TP frames.
    558  */
    559 #define DLT_BACNET_MS_TP	165
    560 
    561 /*
    562  * Another PPP variant as per request from Karsten Keil <kkeil (at) suse.de>.
    563  *
    564  * This is used in some OSes to allow a kernel socket filter to distinguish
    565  * between incoming and outgoing packets, on a socket intended to
    566  * supply pppd with outgoing packets so it can do dial-on-demand and
    567  * hangup-on-lack-of-demand; incoming packets are filtered out so they
    568  * don't cause pppd to hold the connection up (you don't want random
    569  * input packets such as port scans, packets from old lost connections,
    570  * etc. to force the connection to stay up).
    571  *
    572  * The first byte of the PPP header (0xff03) is modified to accomodate
    573  * the direction - 0x00 = IN, 0x01 = OUT.
    574  */
    575 #define DLT_PPP_PPPD		166
    576 
    577 /*
    578  * Names for backwards compatibility with older versions of some PPP
    579  * software; new software should use DLT_PPP_PPPD.
    580  */
    581 #define DLT_PPP_WITH_DIRECTION	DLT_PPP_PPPD
    582 #define DLT_LINUX_PPP_WITHDIRECTION	DLT_PPP_PPPD
    583 
    584 /*
    585  * Juniper-private data link type, as per request from
    586  * Hannes Gredler <hannes (at) juniper.net>.  The DLT_s are used
    587  * for passing on chassis-internal metainformation such as
    588  * QOS profiles, cookies, etc..
    589  */
    590 #define DLT_JUNIPER_PPPOE       167
    591 #define DLT_JUNIPER_PPPOE_ATM   168
    592 
    593 #define DLT_GPRS_LLC		169	/* GPRS LLC */
    594 #define DLT_GPF_T		170	/* GPF-T (ITU-T G.7041/Y.1303) */
    595 #define DLT_GPF_F		171	/* GPF-F (ITU-T G.7041/Y.1303) */
    596 
    597 /*
    598  * Requested by Oolan Zimmer <oz (at) gcom.com> for use in Gcom's T1/E1 line
    599  * monitoring equipment.
    600  */
    601 #define DLT_GCOM_T1E1		172
    602 #define DLT_GCOM_SERIAL		173
    603 
    604 /*
    605  * Juniper-private data link type, as per request from
    606  * Hannes Gredler <hannes (at) juniper.net>.  The DLT_ is used
    607  * for internal communication to Physical Interface Cards (PIC)
    608  */
    609 #define DLT_JUNIPER_PIC_PEER    174
    610 
    611 /*
    612  * Link types requested by Gregor Maier <gregor (at) endace.com> of Endace
    613  * Measurement Systems.  They add an ERF header (see
    614  * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
    615  * the link-layer header.
    616  */
    617 #define DLT_ERF_ETH		175	/* Ethernet */
    618 #define DLT_ERF_POS		176	/* Packet-over-SONET */
    619 
    620 /*
    621  * Requested by Daniele Orlandi <daniele (at) orlandi.com> for raw LAPD
    622  * for vISDN (http://www.orlandi.com/visdn/).  Its link-layer header
    623  * includes additional information before the LAPD header, so it's
    624  * not necessarily a generic LAPD header.
    625  */
    626 #define DLT_LINUX_LAPD		177
    627 
    628 /*
    629  * Juniper-private data link type, as per request from
    630  * Hannes Gredler <hannes (at) juniper.net>.
    631  * The DLT_ are used for prepending meta-information
    632  * like interface index, interface name
    633  * before standard Ethernet, PPP, Frelay & C-HDLC Frames
    634  */
    635 #define DLT_JUNIPER_ETHER       178
    636 #define DLT_JUNIPER_PPP         179
    637 #define DLT_JUNIPER_FRELAY      180
    638 #define DLT_JUNIPER_CHDLC       181
    639 
    640 /*
    641  * Multi Link Frame Relay (FRF.16)
    642  */
    643 #define DLT_MFR                 182
    644 
    645 /*
    646  * Juniper-private data link type, as per request from
    647  * Hannes Gredler <hannes (at) juniper.net>.
    648  * The DLT_ is used for internal communication with a
    649  * voice Adapter Card (PIC)
    650  */
    651 #define DLT_JUNIPER_VP          183
    652 
    653 /*
    654  * Arinc 429 frames.
    655  * DLT_ requested by Gianluca Varenni <gianluca.varenni (at) cacetech.com>.
    656  * Every frame contains a 32bit A429 label.
    657  * More documentation on Arinc 429 can be found at
    658  * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf
    659  */
    660 #define DLT_A429                184
    661 
    662 /*
    663  * Arinc 653 Interpartition Communication messages.
    664  * DLT_ requested by Gianluca Varenni <gianluca.varenni (at) cacetech.com>.
    665  * Please refer to the A653-1 standard for more information.
    666  */
    667 #define DLT_A653_ICM            185
    668 
    669 /*
    670  * This used to be "USB packets, beginning with a USB setup header;
    671  * requested by Paolo Abeni <paolo.abeni (at) email.it>."
    672  *
    673  * However, that header didn't work all that well - it left out some
    674  * useful information - and was abandoned in favor of the DLT_USB_LINUX
    675  * header.
    676  *
    677  * This is now used by FreeBSD for its BPF taps for USB; that has its
    678  * own headers.  So it is written, so it is done.
    679  *
    680  * For source-code compatibility, we also define DLT_USB to have this
    681  * value.  We do it numerically so that, if code that includes this
    682  * file (directly or indirectly) also includes an OS header that also
    683  * defines DLT_USB as 186, we don't get a redefinition warning.
    684  * (NetBSD 7 does that.)
    685  */
    686 #define DLT_USB_FREEBSD		186
    687 #define DLT_USB			186
    688 
    689 /*
    690  * Bluetooth HCI UART transport layer (part H:4); requested by
    691  * Paolo Abeni.
    692  */
    693 #define DLT_BLUETOOTH_HCI_H4	187
    694 
    695 /*
    696  * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz
    697  * <cruz_petagay (at) bah.com>.
    698  */
    699 #define DLT_IEEE802_16_MAC_CPS	188
    700 
    701 /*
    702  * USB packets, beginning with a Linux USB header; requested by
    703  * Paolo Abeni <paolo.abeni (at) email.it>.
    704  */
    705 #define DLT_USB_LINUX		189
    706 
    707 /*
    708  * Controller Area Network (CAN) v. 2.0B packets.
    709  * DLT_ requested by Gianluca Varenni <gianluca.varenni (at) cacetech.com>.
    710  * Used to dump CAN packets coming from a CAN Vector board.
    711  * More documentation on the CAN v2.0B frames can be found at
    712  * http://www.can-cia.org/downloads/?269
    713  */
    714 #define DLT_CAN20B              190
    715 
    716 /*
    717  * IEEE 802.15.4, with address fields padded, as is done by Linux
    718  * drivers; requested by Juergen Schimmer.
    719  */
    720 #define DLT_IEEE802_15_4_LINUX	191
    721 
    722 /*
    723  * Per Packet Information encapsulated packets.
    724  * DLT_ requested by Gianluca Varenni <gianluca.varenni (at) cacetech.com>.
    725  */
    726 #define DLT_PPI			192
    727 
    728 /*
    729  * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header;
    730  * requested by Charles Clancy.
    731  */
    732 #define DLT_IEEE802_16_MAC_CPS_RADIO	193
    733 
    734 /*
    735  * Juniper-private data link type, as per request from
    736  * Hannes Gredler <hannes (at) juniper.net>.
    737  * The DLT_ is used for internal communication with a
    738  * integrated service module (ISM).
    739  */
    740 #define DLT_JUNIPER_ISM         194
    741 
    742 /*
    743  * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
    744  * nothing); requested by Mikko Saarnivala <mikko.saarnivala (at) sensinode.com>.
    745  * For this one, we expect the FCS to be present at the end of the frame;
    746  * if the frame has no FCS, DLT_IEEE802_15_4_NOFCS should be used.
    747  */
    748 #define DLT_IEEE802_15_4	195
    749 
    750 /*
    751  * Various link-layer types, with a pseudo-header, for SITA
    752  * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew (at) gmail.com).
    753  */
    754 #define DLT_SITA		196
    755 
    756 /*
    757  * Various link-layer types, with a pseudo-header, for Endace DAG cards;
    758  * encapsulates Endace ERF records.  Requested by Stephen Donnelly
    759  * <stephen (at) endace.com>.
    760  */
    761 #define DLT_ERF			197
    762 
    763 /*
    764  * Special header prepended to Ethernet packets when capturing from a
    765  * u10 Networks board.  Requested by Phil Mulholland
    766  * <phil (at) u10networks.com>.
    767  */
    768 #define DLT_RAIF1		198
    769 
    770 /*
    771  * IPMB packet for IPMI, beginning with the I2C slave address, followed
    772  * by the netFn and LUN, etc..  Requested by Chanthy Toeung
    773  * <chanthy.toeung (at) ca.kontron.com>.
    774  */
    775 #define DLT_IPMB		199
    776 
    777 /*
    778  * Juniper-private data link type, as per request from
    779  * Hannes Gredler <hannes (at) juniper.net>.
    780  * The DLT_ is used for capturing data on a secure tunnel interface.
    781  */
    782 #define DLT_JUNIPER_ST          200
    783 
    784 /*
    785  * Bluetooth HCI UART transport layer (part H:4), with pseudo-header
    786  * that includes direction information; requested by Paolo Abeni.
    787  */
    788 #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR	201
    789 
    790 /*
    791  * AX.25 packet with a 1-byte KISS header; see
    792  *
    793  *	http://www.ax25.net/kiss.htm
    794  *
    795  * as per Richard Stearn <richard (at) rns-stearn.demon.co.uk>.
    796  */
    797 #define DLT_AX25_KISS		202
    798 
    799 /*
    800  * LAPD packets from an ISDN channel, starting with the address field,
    801  * with no pseudo-header.
    802  * Requested by Varuna De Silva <varunax (at) gmail.com>.
    803  */
    804 #define DLT_LAPD		203
    805 
    806 /*
    807  * Variants of various link-layer headers, with a one-byte direction
    808  * pseudo-header prepended - zero means "received by this host",
    809  * non-zero (any non-zero value) means "sent by this host" - as per
    810  * Will Barker <w.barker (at) zen.co.uk>.
    811  */
    812 #define DLT_PPP_WITH_DIR	204	/* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */
    813 #define DLT_C_HDLC_WITH_DIR	205	/* Cisco HDLC */
    814 #define DLT_FRELAY_WITH_DIR	206	/* Frame Relay */
    815 #define DLT_LAPB_WITH_DIR	207	/* LAPB */
    816 
    817 /*
    818  * 208 is reserved for an as-yet-unspecified proprietary link-layer
    819  * type, as requested by Will Barker.
    820  */
    821 
    822 /*
    823  * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman
    824  * <avn (at) pigeonpoint.com>.
    825  */
    826 #define DLT_IPMB_LINUX		209
    827 
    828 /*
    829  * FlexRay automotive bus - http://www.flexray.com/ - as requested
    830  * by Hannes Kaelber <hannes.kaelber (at) x2e.de>.
    831  */
    832 #define DLT_FLEXRAY		210
    833 
    834 /*
    835  * Media Oriented Systems Transport (MOST) bus for multimedia
    836  * transport - http://www.mostcooperation.com/ - as requested
    837  * by Hannes Kaelber <hannes.kaelber (at) x2e.de>.
    838  */
    839 #define DLT_MOST		211
    840 
    841 /*
    842  * Local Interconnect Network (LIN) bus for vehicle networks -
    843  * http://www.lin-subbus.org/ - as requested by Hannes Kaelber
    844  * <hannes.kaelber (at) x2e.de>.
    845  */
    846 #define DLT_LIN			212
    847 
    848 /*
    849  * X2E-private data link type used for serial line capture,
    850  * as requested by Hannes Kaelber <hannes.kaelber (at) x2e.de>.
    851  */
    852 #define DLT_X2E_SERIAL		213
    853 
    854 /*
    855  * X2E-private data link type used for the Xoraya data logger
    856  * family, as requested by Hannes Kaelber <hannes.kaelber (at) x2e.de>.
    857  */
    858 #define DLT_X2E_XORAYA		214
    859 
    860 /*
    861  * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
    862  * nothing), but with the PHY-level data for non-ASK PHYs (4 octets
    863  * of 0 as preamble, one octet of SFD, one octet of frame length+
    864  * reserved bit, and then the MAC-layer data, starting with the
    865  * frame control field).
    866  *
    867  * Requested by Max Filippov <jcmvbkbc (at) gmail.com>.
    868  */
    869 #define DLT_IEEE802_15_4_NONASK_PHY	215
    870 
    871 /*
    872  * David Gibson <david (at) gibson.dropbear.id.au> requested this for
    873  * captures from the Linux kernel /dev/input/eventN devices. This
    874  * is used to communicate keystrokes and mouse movements from the
    875  * Linux kernel to display systems, such as Xorg.
    876  */
    877 #define DLT_LINUX_EVDEV		216
    878 
    879 /*
    880  * GSM Um and Abis interfaces, preceded by a "gsmtap" header.
    881  *
    882  * Requested by Harald Welte <laforge (at) gnumonks.org>.
    883  */
    884 #define DLT_GSMTAP_UM		217
    885 #define DLT_GSMTAP_ABIS		218
    886 
    887 /*
    888  * MPLS, with an MPLS label as the link-layer header.
    889  * Requested by Michele Marchetto <michele (at) openbsd.org> on behalf
    890  * of OpenBSD.
    891  */
    892 #define DLT_MPLS		219
    893 
    894 /*
    895  * USB packets, beginning with a Linux USB header, with the USB header
    896  * padded to 64 bytes; required for memory-mapped access.
    897  */
    898 #define DLT_USB_LINUX_MMAPPED	220
    899 
    900 /*
    901  * DECT packets, with a pseudo-header; requested by
    902  * Matthias Wenzel <tcpdump (at) mazzoo.de>.
    903  */
    904 #define DLT_DECT		221
    905 
    906 /*
    907  * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <eric.lidwa-1 (at) nasa.gov>
    908  * Date: Mon, 11 May 2009 11:18:30 -0500
    909  *
    910  * DLT_AOS. We need it for AOS Space Data Link Protocol.
    911  *   I have already written dissectors for but need an OK from
    912  *   legal before I can submit a patch.
    913  *
    914  */
    915 #define DLT_AOS                 222
    916 
    917 /*
    918  * Wireless HART (Highway Addressable Remote Transducer)
    919  * From the HART Communication Foundation
    920  * IES/PAS 62591
    921  *
    922  * Requested by Sam Roberts <vieuxtech (at) gmail.com>.
    923  */
    924 #define DLT_WIHART		223
    925 
    926 /*
    927  * Fibre Channel FC-2 frames, beginning with a Frame_Header.
    928  * Requested by Kahou Lei <kahou82 (at) gmail.com>.
    929  */
    930 #define DLT_FC_2		224
    931 
    932 /*
    933  * Fibre Channel FC-2 frames, beginning with an encoding of the
    934  * SOF, and ending with an encoding of the EOF.
    935  *
    936  * The encodings represent the frame delimiters as 4-byte sequences
    937  * representing the corresponding ordered sets, with K28.5
    938  * represented as 0xBC, and the D symbols as the corresponding
    939  * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2,
    940  * is represented as 0xBC 0xB5 0x55 0x55.
    941  *
    942  * Requested by Kahou Lei <kahou82 (at) gmail.com>.
    943  */
    944 #define DLT_FC_2_WITH_FRAME_DELIMS	225
    945 
    946 /*
    947  * Solaris ipnet pseudo-header; requested by Darren Reed <Darren.Reed (at) Sun.COM>.
    948  *
    949  * The pseudo-header starts with a one-byte version number; for version 2,
    950  * the pseudo-header is:
    951  *
    952  * struct dl_ipnetinfo {
    953  *     u_int8_t   dli_version;
    954  *     u_int8_t   dli_family;
    955  *     u_int16_t  dli_htype;
    956  *     u_int32_t  dli_pktlen;
    957  *     u_int32_t  dli_ifindex;
    958  *     u_int32_t  dli_grifindex;
    959  *     u_int32_t  dli_zsrc;
    960  *     u_int32_t  dli_zdst;
    961  * };
    962  *
    963  * dli_version is 2 for the current version of the pseudo-header.
    964  *
    965  * dli_family is a Solaris address family value, so it's 2 for IPv4
    966  * and 26 for IPv6.
    967  *
    968  * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing
    969  * packets, and 2 for packets arriving from another zone on the same
    970  * machine.
    971  *
    972  * dli_pktlen is the length of the packet data following the pseudo-header
    973  * (so the captured length minus dli_pktlen is the length of the
    974  * pseudo-header, assuming the entire pseudo-header was captured).
    975  *
    976  * dli_ifindex is the interface index of the interface on which the
    977  * packet arrived.
    978  *
    979  * dli_grifindex is the group interface index number (for IPMP interfaces).
    980  *
    981  * dli_zsrc is the zone identifier for the source of the packet.
    982  *
    983  * dli_zdst is the zone identifier for the destination of the packet.
    984  *
    985  * A zone number of 0 is the global zone; a zone number of 0xffffffff
    986  * means that the packet arrived from another host on the network, not
    987  * from another zone on the same machine.
    988  *
    989  * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates
    990  * which of those it is.
    991  */
    992 #define DLT_IPNET		226
    993 
    994 /*
    995  * CAN (Controller Area Network) frames, with a pseudo-header as supplied
    996  * by Linux SocketCAN, and with multi-byte numerical fields in that header
    997  * in big-endian byte order.
    998  *
    999  * See Documentation/networking/can.txt in the Linux source.
   1000  *
   1001  * Requested by Felix Obenhuber <felix (at) obenhuber.de>.
   1002  */
   1003 #define DLT_CAN_SOCKETCAN	227
   1004 
   1005 /*
   1006  * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies
   1007  * whether it's v4 or v6.  Requested by Darren Reed <Darren.Reed (at) Sun.COM>.
   1008  */
   1009 #define DLT_IPV4		228
   1010 #define DLT_IPV6		229
   1011 
   1012 /*
   1013  * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
   1014  * nothing), and with no FCS at the end of the frame; requested by
   1015  * Jon Smirl <jonsmirl (at) gmail.com>.
   1016  */
   1017 #define DLT_IEEE802_15_4_NOFCS	230
   1018 
   1019 /*
   1020  * Raw D-Bus:
   1021  *
   1022  *	http://www.freedesktop.org/wiki/Software/dbus
   1023  *
   1024  * messages:
   1025  *
   1026  *	http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages
   1027  *
   1028  * starting with the endianness flag, followed by the message type, etc.,
   1029  * but without the authentication handshake before the message sequence:
   1030  *
   1031  *	http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol
   1032  *
   1033  * Requested by Martin Vidner <martin (at) vidner.net>.
   1034  */
   1035 #define DLT_DBUS		231
   1036 
   1037 /*
   1038  * Juniper-private data link type, as per request from
   1039  * Hannes Gredler <hannes (at) juniper.net>.
   1040  */
   1041 #define DLT_JUNIPER_VS			232
   1042 #define DLT_JUNIPER_SRX_E2E		233
   1043 #define DLT_JUNIPER_FIBRECHANNEL	234
   1044 
   1045 /*
   1046  * DVB-CI (DVB Common Interface for communication between a PC Card
   1047  * module and a DVB receiver).  See
   1048  *
   1049  *	http://www.kaiser.cx/pcap-dvbci.html
   1050  *
   1051  * for the specification.
   1052  *
   1053  * Requested by Martin Kaiser <martin (at) kaiser.cx>.
   1054  */
   1055 #define DLT_DVB_CI		235
   1056 
   1057 /*
   1058  * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but
   1059  * *not* the same as, 27.010).  Requested by Hans-Christoph Schemmel
   1060  * <hans-christoph.schemmel (at) cinterion.com>.
   1061  */
   1062 #define DLT_MUX27010		236
   1063 
   1064 /*
   1065  * STANAG 5066 D_PDUs.  Requested by M. Baris Demiray
   1066  * <barisdemiray (at) gmail.com>.
   1067  */
   1068 #define DLT_STANAG_5066_D_PDU	237
   1069 
   1070 /*
   1071  * Juniper-private data link type, as per request from
   1072  * Hannes Gredler <hannes (at) juniper.net>.
   1073  */
   1074 #define DLT_JUNIPER_ATM_CEMIC	238
   1075 
   1076 /*
   1077  * NetFilter LOG messages
   1078  * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets)
   1079  *
   1080  * Requested by Jakub Zawadzki <darkjames-ws (at) darkjames.pl>
   1081  */
   1082 #define DLT_NFLOG		239
   1083 
   1084 /*
   1085  * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
   1086  * for Ethernet packets with a 4-byte pseudo-header and always
   1087  * with the payload including the FCS, as supplied by their
   1088  * netANALYZER hardware and software.
   1089  *
   1090  * Requested by Holger P. Frommer <HPfrommer (at) hilscher.com>
   1091  */
   1092 #define DLT_NETANALYZER		240
   1093 
   1094 /*
   1095  * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
   1096  * for Ethernet packets with a 4-byte pseudo-header and FCS and
   1097  * with the Ethernet header preceded by 7 bytes of preamble and
   1098  * 1 byte of SFD, as supplied by their netANALYZER hardware and
   1099  * software.
   1100  *
   1101  * Requested by Holger P. Frommer <HPfrommer (at) hilscher.com>
   1102  */
   1103 #define DLT_NETANALYZER_TRANSPARENT	241
   1104 
   1105 /*
   1106  * IP-over-InfiniBand, as specified by RFC 4391.
   1107  *
   1108  * Requested by Petr Sumbera <petr.sumbera (at) oracle.com>.
   1109  */
   1110 #define DLT_IPOIB		242
   1111 
   1112 /*
   1113  * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0).
   1114  *
   1115  * Requested by Guy Martin <gmsoft (at) tuxicoman.be>.
   1116  */
   1117 #define DLT_MPEG_2_TS		243
   1118 
   1119 /*
   1120  * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as
   1121  * used by their ng40 protocol tester.
   1122  *
   1123  * Requested by Jens Grimmer <jens.grimmer (at) ng4t.com>.
   1124  */
   1125 #define DLT_NG40		244
   1126 
   1127 /*
   1128  * Pseudo-header giving adapter number and flags, followed by an NFC
   1129  * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU,
   1130  * as specified by NFC Forum Logical Link Control Protocol Technical
   1131  * Specification LLCP 1.1.
   1132  *
   1133  * Requested by Mike Wakerly <mikey (at) google.com>.
   1134  */
   1135 #define DLT_NFC_LLCP		245
   1136 
   1137 /*
   1138  * 246 is used as LINKTYPE_PFSYNC; do not use it for any other purpose.
   1139  *
   1140  * DLT_PFSYNC has different values on different platforms, and all of
   1141  * them collide with something used elsewhere.  On platforms that
   1142  * don't already define it, define it as 246.
   1143  */
   1144 #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__) && !defined(__APPLE__)
   1145 #define DLT_PFSYNC		246
   1146 #endif
   1147 
   1148 /*
   1149  * Raw InfiniBand packets, starting with the Local Routing Header.
   1150  *
   1151  * Requested by Oren Kladnitsky <orenk (at) mellanox.com>.
   1152  */
   1153 #define DLT_INFINIBAND		247
   1154 
   1155 /*
   1156  * SCTP, with no lower-level protocols (i.e., no IPv4 or IPv6).
   1157  *
   1158  * Requested by Michael Tuexen <Michael.Tuexen (at) lurchi.franken.de>.
   1159  */
   1160 #define DLT_SCTP		248
   1161 
   1162 /*
   1163  * USB packets, beginning with a USBPcap header.
   1164  *
   1165  * Requested by Tomasz Mon <desowin (at) gmail.com>
   1166  */
   1167 #define DLT_USBPCAP		249
   1168 
   1169 /*
   1170  * Schweitzer Engineering Laboratories "RTAC" product serial-line
   1171  * packets.
   1172  *
   1173  * Requested by Chris Bontje <chris_bontje (at) selinc.com>.
   1174  */
   1175 #define DLT_RTAC_SERIAL		250
   1176 
   1177 /*
   1178  * Bluetooth Low Energy air interface link-layer packets.
   1179  *
   1180  * Requested by Mike Kershaw <dragorn (at) kismetwireless.net>.
   1181  */
   1182 #define DLT_BLUETOOTH_LE_LL	251
   1183 
   1184 /*
   1185  * DLT type for upper-protocol layer PDU saves from wireshark.
   1186  *
   1187  * the actual contents are determined by two TAGs stored with each
   1188  * packet:
   1189  *   EXP_PDU_TAG_LINKTYPE          the link type (LINKTYPE_ value) of the
   1190  *				   original packet.
   1191  *
   1192  *   EXP_PDU_TAG_PROTO_NAME        the name of the wireshark dissector
   1193  * 				   that can make sense of the data stored.
   1194  */
   1195 #define DLT_WIRESHARK_UPPER_PDU	252
   1196 
   1197 /*
   1198  * DLT type for the netlink protocol (nlmon devices).
   1199  */
   1200 #define DLT_NETLINK		253
   1201 
   1202 /*
   1203  * Bluetooth Linux Monitor headers for the BlueZ stack.
   1204  */
   1205 #define DLT_BLUETOOTH_LINUX_MONITOR	254
   1206 
   1207 /*
   1208  * Bluetooth Basic Rate/Enhanced Data Rate baseband packets, as
   1209  * captured by Ubertooth.
   1210  */
   1211 #define DLT_BLUETOOTH_BREDR_BB	255
   1212 
   1213 /*
   1214  * Bluetooth Low Energy link layer packets, as captured by Ubertooth.
   1215  */
   1216 #define DLT_BLUETOOTH_LE_LL_WITH_PHDR	256
   1217 
   1218 /*
   1219  * PROFIBUS data link layer.
   1220  */
   1221 #define DLT_PROFIBUS_DL		257
   1222 
   1223 /*
   1224  * Apple's DLT_PKTAP headers.
   1225  *
   1226  * Sadly, the folks at Apple either had no clue that the DLT_USERn values
   1227  * are for internal use within an organization and partners only, and
   1228  * didn't know that the right way to get a link-layer header type is to
   1229  * ask tcpdump.org for one, or knew and didn't care, so they just
   1230  * used DLT_USER2, which causes problems for everything except for
   1231  * their version of tcpdump.
   1232  *
   1233  * So I'll just give them one; hopefully this will show up in a
   1234  * libpcap release in time for them to get this into 10.10 Big Sur
   1235  * or whatever Mavericks' successor is called.  LINKTYPE_PKTAP
   1236  * will be 258 *even on OS X*; that is *intentional*, so that
   1237  * PKTAP files look the same on *all* OSes (different OSes can have
   1238  * different numerical values for a given DLT_, but *MUST NOT* have
   1239  * different values for what goes in a file, as files can be moved
   1240  * between OSes!).
   1241  *
   1242  * When capturing, on a system with a Darwin-based OS, on a device
   1243  * that returns 149 (DLT_USER2 and Apple's DLT_PKTAP) with this
   1244  * version of libpcap, the DLT_ value for the pcap_t  will be DLT_PKTAP,
   1245  * and that will continue to be DLT_USER2 on Darwin-based OSes. That way,
   1246  * binary compatibility with Mavericks is preserved for programs using
   1247  * this version of libpcap.  This does mean that if you were using
   1248  * DLT_USER2 for some capture device on OS X, you can't do so with
   1249  * this version of libpcap, just as you can't with Apple's libpcap -
   1250  * on OS X, they define DLT_PKTAP to be DLT_USER2, so programs won't
   1251  * be able to distinguish between PKTAP and whatever you were using
   1252  * DLT_USER2 for.
   1253  *
   1254  * If the program saves the capture to a file using this version of
   1255  * libpcap's pcap_dump code, the LINKTYPE_ value in the file will be
   1256  * LINKTYPE_PKTAP, which will be 258, even on Darwin-based OSes.
   1257  * That way, the file will *not* be a DLT_USER2 file.  That means
   1258  * that the latest version of tcpdump, when built with this version
   1259  * of libpcap, and sufficiently recent versions of Wireshark will
   1260  * be able to read those files and interpret them correctly; however,
   1261  * Apple's version of tcpdump in OS X 10.9 won't be able to handle
   1262  * them.  (Hopefully, Apple will pick up this version of libpcap,
   1263  * and the corresponding version of tcpdump, so that tcpdump will
   1264  * be able to handle the old LINKTYPE_USER2 captures *and* the new
   1265  * LINKTYPE_PKTAP captures.)
   1266  */
   1267 #ifdef __APPLE__
   1268 #define DLT_PKTAP	DLT_USER2
   1269 #else
   1270 #define DLT_PKTAP	258
   1271 #endif
   1272 
   1273 /*
   1274  * Ethernet packets preceded by a header giving the last 6 octets
   1275  * of the preamble specified by 802.3-2012 Clause 65, section
   1276  * 65.1.3.2 "Transmit".
   1277  */
   1278 #define DLT_EPON	259
   1279 
   1280 /*
   1281  * IPMI trace packets, as specified by Table 3-20 "Trace Data Block Format"
   1282  * in the PICMG HPM.2 specification.
   1283  */
   1284 #define DLT_IPMI_HPM_2	260
   1285 
   1286 /*
   1287  * per  Joshua Wright <jwright (at) hasborg.com>, formats for Zwave captures.
   1288  */
   1289 #define DLT_ZWAVE_R1_R2  261
   1290 #define DLT_ZWAVE_R3     262
   1291 
   1292 /*
   1293  * per Steve Karg <skarg (at) users.sourceforge.net>, formats for Wattstopper
   1294  * Digital Lighting Management room bus serial protocol captures.
   1295  */
   1296 #define DLT_WATTSTOPPER_DLM     263
   1297 
   1298 /*
   1299  * ISO 14443 contactless smart card messages.
   1300  */
   1301 #define DLT_ISO_14443	264
   1302 
   1303 /*
   1304  * Radio data system (RDS) groups.  IEC 62106.
   1305  * Per Jonathan Brucker <jonathan.brucke (at) gmail.com>.
   1306  */
   1307 #define DLT_RDS		265
   1308 
   1309 /*
   1310  * In case the code that includes this file (directly or indirectly)
   1311  * has also included OS files that happen to define DLT_MATCHING_MAX,
   1312  * with a different value (perhaps because that OS hasn't picked up
   1313  * the latest version of our DLT definitions), we undefine the
   1314  * previous value of DLT_MATCHING_MAX.
   1315  */
   1316 #ifdef DLT_MATCHING_MAX
   1317 #undef DLT_MATCHING_MAX
   1318 #endif
   1319 #define DLT_MATCHING_MAX	265	/* highest value in the "matching" range */
   1320 
   1321 /*
   1322  * DLT and savefile link type values are split into a class and
   1323  * a member of that class.  A class value of 0 indicates a regular
   1324  * DLT_/LINKTYPE_ value.
   1325  */
   1326 #define DLT_CLASS(x)		((x) & 0x03ff0000)
   1327 
   1328 /*
   1329  * NetBSD-specific generic "raw" link type.  The class value indicates
   1330  * that this is the generic raw type, and the lower 16 bits are the
   1331  * address family we're dealing with.  Those values are NetBSD-specific;
   1332  * do not assume that they correspond to AF_ values for your operating
   1333  * system.
   1334  */
   1335 #define	DLT_CLASS_NETBSD_RAWAF	0x02240000
   1336 #define	DLT_NETBSD_RAWAF(af)	(DLT_CLASS_NETBSD_RAWAF | (af))
   1337 #define	DLT_NETBSD_RAWAF_AF(x)	((x) & 0x0000ffff)
   1338 #define	DLT_IS_NETBSD_RAWAF(x)	(DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF)
   1339 
   1340 #endif /* !defined(lib_pcap_dlt_h) */
   1341