2 * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
3 * The Regents of the University of California. All rights reserved.
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
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * @(#)bpf.h 7.1 (Berkeley) 5/7/91
43 * Link-layer header type codes.
45 * Do *NOT* add new values to this list without asking
46 * "tcpdump-workers@lists.tcpdump.org" for a value. Otherwise, you run
47 * the risk of using a value that's already being used for some other
48 * purpose, and of having tools that read libpcap-format captures not
49 * being able to handle captures with your new DLT_ value, with no hope
50 * that they will ever be changed to do so (as that would destroy their
51 * ability to read captures using that value for that other purpose).
55 * http://www.tcpdump.org/linktypes.html
57 * for detailed descriptions of some of these link-layer header types.
61 * These are the types that are the same on all platforms, and that
62 * have been defined by <net/bpf.h> for ages.
64 #define DLT_NULL 0 /* BSD loopback encapsulation */
65 #define DLT_EN10MB 1 /* Ethernet (10Mb) */
66 #define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */
67 #define DLT_AX25 3 /* Amateur Radio AX.25 */
68 #define DLT_PRONET 4 /* Proteon ProNET Token Ring */
69 #define DLT_CHAOS 5 /* Chaos */
70 #define DLT_IEEE802 6 /* 802.5 Token Ring */
71 #define DLT_ARCNET 7 /* ARCNET, with BSD-style header */
72 #define DLT_SLIP 8 /* Serial Line IP */
73 #define DLT_PPP 9 /* Point-to-point Protocol */
74 #define DLT_FDDI 10 /* FDDI */
77 * These are types that are different on some platforms, and that
78 * have been defined by <net/bpf.h> for ages. We use #ifdefs to
79 * detect the BSDs that define them differently from the traditional
82 * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS,
83 * but I don't know what the right #define is for BSD/OS.
85 #define DLT_ATM_RFC1483 11 /* LLC-encapsulated ATM */
88 #define DLT_RAW 14 /* raw IP */
90 #define DLT_RAW 12 /* raw IP */
94 * Given that the only OS that currently generates BSD/OS SLIP or PPP
95 * is, well, BSD/OS, arguably everybody should have chosen its values
96 * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they
99 #if defined(__NetBSD__) || defined(__FreeBSD__)
100 #ifndef DLT_SLIP_BSDOS
101 #define DLT_SLIP_BSDOS 13 /* BSD/OS Serial Line IP */
102 #define DLT_PPP_BSDOS 14 /* BSD/OS Point-to-point Protocol */
105 #define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */
106 #define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */
110 * 17 was used for DLT_PFLOG in OpenBSD; it no longer is.
112 * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG
113 * as 117 so that pflog captures would use a link-layer header type
114 * value that didn't collide with any other values. On all
115 * platforms other than OpenBSD, we defined DLT_PFLOG as 117,
116 * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG.
118 * OpenBSD eventually switched to using 117 for DLT_PFLOG as well.
120 * Don't use 17 for anything else.
124 * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and
125 * macOS; don't use it for anything else. (FreeBSD uses 121, which
126 * collides with DLT_HHDLC, even though it doesn't use 18 for
127 * anything and doesn't appear to have ever used it for anything.)
129 * We define it as 18 on those platforms; it is, unfortunately, used
130 * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC
131 * in general. As the packet format for it, like that for
132 * DLT_PFLOG, is not only OS-dependent but OS-version-dependent,
133 * we don't support printing it in tcpdump except on OSes that
134 * have the relevant header files, so it's not that useful on
137 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__APPLE__)
138 #define DLT_PFSYNC 18
141 #define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */
144 * Apparently Redback uses this for its SmartEdge 400/800. I hope
145 * nobody else decided to use it, too.
147 #define DLT_REDBACK_SMARTEDGE 32
150 * These values are defined by NetBSD; other platforms should refrain from
151 * using them for other purposes, so that NetBSD savefiles with link
152 * types of 50 or 51 can be read as this type on all platforms.
154 #define DLT_PPP_SERIAL 50 /* PPP over serial with HDLC encapsulation */
155 #define DLT_PPP_ETHER 51 /* PPP over Ethernet */
158 * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses
159 * a link-layer type of 99 for the tcpdump it supplies. The link-layer
160 * header has 6 bytes of unknown data, something that appears to be an
161 * Ethernet type, and 36 bytes that appear to be 0 in at least one capture
164 #define DLT_SYMANTEC_FIREWALL 99
167 * Values between 100 and 103 are used in capture file headers as
168 * link-layer header type LINKTYPE_ values corresponding to DLT_ types
169 * that differ between platforms; don't use those values for new DLT_
174 * Values starting with 104 are used for newly-assigned link-layer
175 * header type values; for those link-layer header types, the DLT_
176 * value returned by pcap_datalink() and passed to pcap_open_dead(),
177 * and the LINKTYPE_ value that appears in capture files, are the
180 * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is
181 * the highest such value.
183 #define DLT_MATCHING_MIN 104
186 * This value was defined by libpcap 0.5; platforms that have defined
187 * it with a different value should define it here with that value -
188 * a link type of 104 in a save file will be mapped to DLT_C_HDLC,
189 * whatever value that happens to be, so programs will correctly
190 * handle files with that link type regardless of the value of
193 * The name DLT_C_HDLC was used by BSD/OS; we use that name for source
194 * compatibility with programs written for BSD/OS.
196 * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well,
197 * for source compatibility with programs written for libpcap 0.5.
199 #define DLT_C_HDLC 104 /* Cisco HDLC */
200 #define DLT_CHDLC DLT_C_HDLC
202 #define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */
205 * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW,
206 * except when it isn't. (I.e., sometimes it's just raw IP, and
207 * sometimes it isn't.) We currently handle it as DLT_LINUX_SLL,
208 * so that we don't have to worry about the link-layer header.)
212 * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides
214 * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header
217 #define DLT_FRELAY 107
220 * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except
221 * that the AF_ type in the link-layer header is in network byte order.
223 * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so
224 * we don't use 12 for it in OSes other than OpenBSD.
233 * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's
234 * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other
244 * Values between 110 and 112 are reserved for use in capture file headers
245 * as link-layer types corresponding to DLT_ types that might differ
246 * between platforms; don't use those values for new DLT_ types
247 * other than the corresponding DLT_ types.
251 * This is for Linux cooked sockets.
253 #define DLT_LINUX_SLL 113
256 * Apple LocalTalk hardware.
258 #define DLT_LTALK 114
263 #define DLT_ECONET 115
266 * Reserved for use with OpenBSD ipfilter.
268 #define DLT_IPFILTER 116
273 #define DLT_PFLOG 117
276 * Registered for Cisco-internal use.
278 #define DLT_CISCO_IOS 118
281 * For 802.11 cards using the Prism II chips, with a link-layer
282 * header including Prism monitor mode information plus an 802.11
285 #define DLT_PRISM_HEADER 119
288 * Reserved for Aironet 802.11 cards, with an Aironet link-layer header
289 * (see Doug Ambrisko's FreeBSD patches).
291 #define DLT_AIRONET_HEADER 120
296 * 121 was reserved for Siemens HiPath HDLC on 2002-01-25, as
297 * requested by Tomas Kukosa.
299 * On 2004-02-25, a FreeBSD checkin to sys/net/bpf.h was made that
300 * assigned 121 as DLT_PFSYNC. In current versions, its libpcap
301 * does DLT_ <-> LINKTYPE_ mapping, mapping DLT_PFSYNC to a
302 * LINKTYPE_PFSYNC value of 246, so it should write out DLT_PFSYNC
303 * dump files with 246 as the link-layer header type. (Earlier
304 * versions might not have done mapping, in which case they would
305 * have written them out with a link-layer header type of 121.)
307 * OpenBSD, from which pf came, however, uses 18 for DLT_PFSYNC;
308 * its libpcap does no DLT_ <-> LINKTYPE_ mapping, so it would
309 * write out DLT_PFSYNC dump files with use 18 as the link-layer
312 * NetBSD, DragonFly BSD, and Darwin also use 18 for DLT_PFSYNC; in
313 * current versions, their libpcaps do DLT_ <-> LINKTYPE_ mapping,
314 * mapping DLT_PFSYNC to a LINKTYPE_PFSYNC value of 246, so they
315 * should write out DLT_PFSYNC dump files with 246 as the link-layer
316 * header type. (Earlier versions might not have done mapping,
317 * in which case they'd work the same way OpenBSD does, writing
318 * them out with a link-layer header type of 18.)
320 * We'll define DLT_PFSYNC as:
322 * 18 on NetBSD, OpenBSD, DragonFly BSD, and Darwin;
326 * 246 everywhere else.
328 * We'll define DLT_HHDLC as 121 on everything except for FreeBSD;
329 * anybody who wants to compile, on FreeBSD, code that uses DLT_HHDLC
332 * We'll define LINKTYPE_PFSYNC as 246 on *all* platforms, so that
333 * savefiles written using *this* code won't use 18 or 121 for PFSYNC,
334 * they'll all use 246.
336 * Code that uses pcap_datalink() to determine the link-layer header
337 * type of a savefile won't, when built and run on FreeBSD, be able
338 * to distinguish between LINKTYPE_PFSYNC and LINKTYPE_HHDLC capture
339 * files, as pcap_datalink() will give 121 for both of them. Code
340 * that doesn't, such as the code in Wireshark, will be able to
341 * distinguish between them.
343 * FreeBSD's libpcap won't map a link-layer header type of 18 - i.e.,
344 * DLT_PFSYNC files from OpenBSD and possibly older versions of NetBSD,
345 * DragonFly BSD, and macOS - to DLT_PFSYNC, so code built with FreeBSD's
346 * libpcap won't treat those files as DLT_PFSYNC files.
348 * Other libpcaps won't map a link-layer header type of 121 to DLT_PFSYNC;
349 * this means they can read DLT_HHDLC files, if any exist, but won't
350 * treat pcap files written by any older versions of FreeBSD libpcap that
351 * didn't map to 246 as DLT_PFSYNC files.
354 #define DLT_PFSYNC 121
356 #define DLT_HHDLC 121
360 * This is for RFC 2625 IP-over-Fibre Channel.
362 * This is not for use with raw Fibre Channel, where the link-layer
363 * header starts with a Fibre Channel frame header; it's for IP-over-FC,
364 * where the link-layer header starts with an RFC 2625 Network_Header
367 #define DLT_IP_OVER_FC 122
370 * This is for Full Frontal ATM on Solaris with SunATM, with a
371 * pseudo-header followed by an AALn PDU.
373 * There may be other forms of Full Frontal ATM on other OSes,
374 * with different pseudo-headers.
376 * If ATM software returns a pseudo-header with VPI/VCI information
377 * (and, ideally, packet type information, e.g. signalling, ILMI,
378 * LANE, LLC-multiplexed traffic, etc.), it should not use
379 * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump
380 * and the like don't have to infer the presence or absence of a
381 * pseudo-header and the form of the pseudo-header.
383 #define DLT_SUNATM 123 /* Solaris+SunATM */
386 * Reserved as per request from Kent Dahlgren <kent@praesum.com>
389 #define DLT_RIO 124 /* RapidIO */
390 #define DLT_PCI_EXP 125 /* PCI Express */
391 #define DLT_AURORA 126 /* Xilinx Aurora link layer */
394 * Header for 802.11 plus a number of bits of link-layer information
395 * including radio information, used by some recent BSD drivers as
396 * well as the madwifi Atheros driver for Linux.
398 #define DLT_IEEE802_11_RADIO 127 /* 802.11 plus radiotap radio header */
401 * Reserved for the TZSP encapsulation, as per request from
402 * Chris Waters <chris.waters@networkchemistry.com>
403 * TZSP is a generic encapsulation for any other link type,
404 * which includes a means to include meta-information
405 * with the packet, e.g. signal strength and channel
406 * for 802.11 packets.
408 #define DLT_TZSP 128 /* Tazmen Sniffer Protocol */
411 * BSD's ARCNET headers have the source host, destination host,
412 * and type at the beginning of the packet; that's what's handed
413 * up to userland via BPF.
415 * Linux's ARCNET headers, however, have a 2-byte offset field
416 * between the host IDs and the type; that's what's handed up
417 * to userland via PF_PACKET sockets.
419 * We therefore have to have separate DLT_ values for them.
421 #define DLT_ARCNET_LINUX 129 /* ARCNET */
424 * Juniper-private data link types, as per request from
425 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used
426 * for passing on chassis-internal metainformation such as
427 * QOS profiles, etc..
429 #define DLT_JUNIPER_MLPPP 130
430 #define DLT_JUNIPER_MLFR 131
431 #define DLT_JUNIPER_ES 132
432 #define DLT_JUNIPER_GGSN 133
433 #define DLT_JUNIPER_MFR 134
434 #define DLT_JUNIPER_ATM2 135
435 #define DLT_JUNIPER_SERVICES 136
436 #define DLT_JUNIPER_ATM1 137
439 * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund
440 * <dieter@apple.com>. The header that's presented is an Ethernet-like
443 * #define FIREWIRE_EUI64_LEN 8
444 * struct firewire_header {
445 * u_char firewire_dhost[FIREWIRE_EUI64_LEN];
446 * u_char firewire_shost[FIREWIRE_EUI64_LEN];
447 * u_short firewire_type;
450 * with "firewire_type" being an Ethernet type value, rather than,
451 * for example, raw GASP frames being handed up.
453 #define DLT_APPLE_IP_OVER_IEEE1394 138
456 * Various SS7 encapsulations, as per a request from Jeff Morriss
457 * <jeff.morriss[AT]ulticom.com> and subsequent discussions.
459 #define DLT_MTP2_WITH_PHDR 139 /* pseudo-header with various info, followed by MTP2 */
460 #define DLT_MTP2 140 /* MTP2, without pseudo-header */
461 #define DLT_MTP3 141 /* MTP3, without pseudo-header or MTP2 */
462 #define DLT_SCCP 142 /* SCCP, without pseudo-header or MTP2 or MTP3 */
467 #define DLT_DOCSIS 143
470 * Linux-IrDA packets. Protocol defined at http://www.irda.org.
471 * Those packets include IrLAP headers and above (IrLMP...), but
472 * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy
473 * framing can be handled by the hardware and depend on the bitrate.
474 * This is exactly the format you would get capturing on a Linux-IrDA
475 * interface (irdaX), but not on a raw serial port.
476 * Note the capture is done in "Linux-cooked" mode, so each packet include
477 * a fake packet header (struct sll_header). This is because IrDA packet
478 * decoding is dependant on the direction of the packet (incomming or
480 * When/if other platform implement IrDA capture, we may revisit the
481 * issue and define a real DLT_IRDA...
484 #define DLT_LINUX_IRDA 144
487 * Reserved for IBM SP switch and IBM Next Federation switch.
489 #define DLT_IBM_SP 145
490 #define DLT_IBM_SN 146
493 * Reserved for private use. If you have some link-layer header type
494 * that you want to use within your organization, with the capture files
495 * using that link-layer header type not ever be sent outside your
496 * organization, you can use these values.
498 * No libpcap release will use these for any purpose, nor will any
499 * tcpdump release use them, either.
501 * Do *NOT* use these in capture files that you expect anybody not using
502 * your private versions of capture-file-reading tools to read; in
503 * particular, do *NOT* use them in products, otherwise you may find that
504 * people won't be able to use tcpdump, or snort, or Ethereal, or... to
505 * read capture files from your firewall/intrusion detection/traffic
506 * monitoring/etc. appliance, or whatever product uses that DLT_ value,
507 * and you may also find that the developers of those applications will
508 * not accept patches to let them read those files.
510 * Also, do not use them if somebody might send you a capture using them
511 * for *their* private type and tools using them for *your* private type
512 * would have to read them.
514 * Instead, ask "tcpdump-workers@lists.tcpdump.org" for a new DLT_ value,
515 * as per the comment above, and use the type you're given.
517 #define DLT_USER0 147
518 #define DLT_USER1 148
519 #define DLT_USER2 149
520 #define DLT_USER3 150
521 #define DLT_USER4 151
522 #define DLT_USER5 152
523 #define DLT_USER6 153
524 #define DLT_USER7 154
525 #define DLT_USER8 155
526 #define DLT_USER9 156
527 #define DLT_USER10 157
528 #define DLT_USER11 158
529 #define DLT_USER12 159
530 #define DLT_USER13 160
531 #define DLT_USER14 161
532 #define DLT_USER15 162
535 * For future use with 802.11 captures - defined by AbsoluteValue
536 * Systems to store a number of bits of link-layer information
537 * including radio information:
539 * http://www.shaftnet.org/~pizza/software/capturefrm.txt
541 * but it might be used by some non-AVS drivers now or in the
544 #define DLT_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */
547 * Juniper-private data link type, as per request from
548 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used
549 * for passing on chassis-internal metainformation such as
550 * QOS profiles, etc..
552 #define DLT_JUNIPER_MONITOR 164
555 * BACnet MS/TP frames.
557 #define DLT_BACNET_MS_TP 165
560 * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>.
562 * This is used in some OSes to allow a kernel socket filter to distinguish
563 * between incoming and outgoing packets, on a socket intended to
564 * supply pppd with outgoing packets so it can do dial-on-demand and
565 * hangup-on-lack-of-demand; incoming packets are filtered out so they
566 * don't cause pppd to hold the connection up (you don't want random
567 * input packets such as port scans, packets from old lost connections,
568 * etc. to force the connection to stay up).
570 * The first byte of the PPP header (0xff03) is modified to accomodate
571 * the direction - 0x00 = IN, 0x01 = OUT.
573 #define DLT_PPP_PPPD 166
576 * Names for backwards compatibility with older versions of some PPP
577 * software; new software should use DLT_PPP_PPPD.
579 #define DLT_PPP_WITH_DIRECTION DLT_PPP_PPPD
580 #define DLT_LINUX_PPP_WITHDIRECTION DLT_PPP_PPPD
583 * Juniper-private data link type, as per request from
584 * Hannes Gredler <hannes@juniper.net>. The DLT_s are used
585 * for passing on chassis-internal metainformation such as
586 * QOS profiles, cookies, etc..
588 #define DLT_JUNIPER_PPPOE 167
589 #define DLT_JUNIPER_PPPOE_ATM 168
591 #define DLT_GPRS_LLC 169 /* GPRS LLC */
592 #define DLT_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */
593 #define DLT_GPF_F 171 /* GPF-F (ITU-T G.7041/Y.1303) */
596 * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line
597 * monitoring equipment.
599 #define DLT_GCOM_T1E1 172
600 #define DLT_GCOM_SERIAL 173
603 * Juniper-private data link type, as per request from
604 * Hannes Gredler <hannes@juniper.net>. The DLT_ is used
605 * for internal communication to Physical Interface Cards (PIC)
607 #define DLT_JUNIPER_PIC_PEER 174
610 * Link types requested by Gregor Maier <gregor@endace.com> of Endace
611 * Measurement Systems. They add an ERF header (see
612 * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
613 * the link-layer header.
615 #define DLT_ERF_ETH 175 /* Ethernet */
616 #define DLT_ERF_POS 176 /* Packet-over-SONET */
619 * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD
620 * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header
621 * includes additional information before the LAPD header, so it's
622 * not necessarily a generic LAPD header.
624 #define DLT_LINUX_LAPD 177
627 * Juniper-private data link type, as per request from
628 * Hannes Gredler <hannes@juniper.net>.
629 * The DLT_ are used for prepending meta-information
630 * like interface index, interface name
631 * before standard Ethernet, PPP, Frelay & C-HDLC Frames
633 #define DLT_JUNIPER_ETHER 178
634 #define DLT_JUNIPER_PPP 179
635 #define DLT_JUNIPER_FRELAY 180
636 #define DLT_JUNIPER_CHDLC 181
639 * Multi Link Frame Relay (FRF.16)
644 * Juniper-private data link type, as per request from
645 * Hannes Gredler <hannes@juniper.net>.
646 * The DLT_ is used for internal communication with a
647 * voice Adapter Card (PIC)
649 #define DLT_JUNIPER_VP 183
653 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
654 * Every frame contains a 32bit A429 label.
655 * More documentation on Arinc 429 can be found at
656 * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf
661 * Arinc 653 Interpartition Communication messages.
662 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
663 * Please refer to the A653-1 standard for more information.
665 #define DLT_A653_ICM 185
668 * This used to be "USB packets, beginning with a USB setup header;
669 * requested by Paolo Abeni <paolo.abeni@email.it>."
671 * However, that header didn't work all that well - it left out some
672 * useful information - and was abandoned in favor of the DLT_USB_LINUX
675 * This is now used by FreeBSD for its BPF taps for USB; that has its
676 * own headers. So it is written, so it is done.
678 * For source-code compatibility, we also define DLT_USB to have this
679 * value. We do it numerically so that, if code that includes this
680 * file (directly or indirectly) also includes an OS header that also
681 * defines DLT_USB as 186, we don't get a redefinition warning.
682 * (NetBSD 7 does that.)
684 #define DLT_USB_FREEBSD 186
688 * Bluetooth HCI UART transport layer (part H:4); requested by
691 #define DLT_BLUETOOTH_HCI_H4 187
694 * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz
695 * <cruz_petagay@bah.com>.
697 #define DLT_IEEE802_16_MAC_CPS 188
700 * USB packets, beginning with a Linux USB header; requested by
701 * Paolo Abeni <paolo.abeni@email.it>.
703 #define DLT_USB_LINUX 189
706 * Controller Area Network (CAN) v. 2.0B packets.
707 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
708 * Used to dump CAN packets coming from a CAN Vector board.
709 * More documentation on the CAN v2.0B frames can be found at
710 * http://www.can-cia.org/downloads/?269
712 #define DLT_CAN20B 190
715 * IEEE 802.15.4, with address fields padded, as is done by Linux
716 * drivers; requested by Juergen Schimmer.
718 #define DLT_IEEE802_15_4_LINUX 191
721 * Per Packet Information encapsulated packets.
722 * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
727 * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header;
728 * requested by Charles Clancy.
730 #define DLT_IEEE802_16_MAC_CPS_RADIO 193
733 * Juniper-private data link type, as per request from
734 * Hannes Gredler <hannes@juniper.net>.
735 * The DLT_ is used for internal communication with a
736 * integrated service module (ISM).
738 #define DLT_JUNIPER_ISM 194
741 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
742 * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>.
743 * For this one, we expect the FCS to be present at the end of the frame;
744 * if the frame has no FCS, DLT_IEEE802_15_4_NOFCS should be used.
746 #define DLT_IEEE802_15_4 195
749 * Various link-layer types, with a pseudo-header, for SITA
750 * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com).
755 * Various link-layer types, with a pseudo-header, for Endace DAG cards;
756 * encapsulates Endace ERF records. Requested by Stephen Donnelly
757 * <stephen@endace.com>.
762 * Special header prepended to Ethernet packets when capturing from a
763 * u10 Networks board. Requested by Phil Mulholland
764 * <phil@u10networks.com>.
766 #define DLT_RAIF1 198
769 * IPMB packet for IPMI, beginning with the I2C slave address, followed
770 * by the netFn and LUN, etc.. Requested by Chanthy Toeung
771 * <chanthy.toeung@ca.kontron.com>.
773 * XXX - this used to be called DLT_IPMB, back when we got the
774 * impression from the email thread requesting it that the packet
775 * had no extra 2-byte header. We've renamed it; if anybody used
776 * DLT_IPMB and assumed no 2-byte header, this will cause the compile
777 * to fail, at which point we'll have to figure out what to do about
778 * the two header types using the same DLT_/LINKTYPE_ value. If that
779 * doesn't happen, we'll assume nobody used it and that the redefinition
782 #define DLT_IPMB_KONTRON 199
785 * Juniper-private data link type, as per request from
786 * Hannes Gredler <hannes@juniper.net>.
787 * The DLT_ is used for capturing data on a secure tunnel interface.
789 #define DLT_JUNIPER_ST 200
792 * Bluetooth HCI UART transport layer (part H:4), with pseudo-header
793 * that includes direction information; requested by Paolo Abeni.
795 #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR 201
798 * AX.25 packet with a 1-byte KISS header; see
800 * http://www.ax25.net/kiss.htm
802 * as per Richard Stearn <richard@rns-stearn.demon.co.uk>.
804 #define DLT_AX25_KISS 202
807 * LAPD packets from an ISDN channel, starting with the address field,
808 * with no pseudo-header.
809 * Requested by Varuna De Silva <varunax@gmail.com>.
814 * Variants of various link-layer headers, with a one-byte direction
815 * pseudo-header prepended - zero means "received by this host",
816 * non-zero (any non-zero value) means "sent by this host" - as per
817 * Will Barker <w.barker@zen.co.uk>.
819 #define DLT_PPP_WITH_DIR 204 /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */
820 #define DLT_C_HDLC_WITH_DIR 205 /* Cisco HDLC */
821 #define DLT_FRELAY_WITH_DIR 206 /* Frame Relay */
822 #define DLT_LAPB_WITH_DIR 207 /* LAPB */
825 * 208 is reserved for an as-yet-unspecified proprietary link-layer
826 * type, as requested by Will Barker.
830 * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman
831 * <avn@pigeonpoint.com>.
833 #define DLT_IPMB_LINUX 209
836 * FlexRay automotive bus - http://www.flexray.com/ - as requested
837 * by Hannes Kaelber <hannes.kaelber@x2e.de>.
839 #define DLT_FLEXRAY 210
842 * Media Oriented Systems Transport (MOST) bus for multimedia
843 * transport - http://www.mostcooperation.com/ - as requested
844 * by Hannes Kaelber <hannes.kaelber@x2e.de>.
849 * Local Interconnect Network (LIN) bus for vehicle networks -
850 * http://www.lin-subbus.org/ - as requested by Hannes Kaelber
851 * <hannes.kaelber@x2e.de>.
856 * X2E-private data link type used for serial line capture,
857 * as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
859 #define DLT_X2E_SERIAL 213
862 * X2E-private data link type used for the Xoraya data logger
863 * family, as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
865 #define DLT_X2E_XORAYA 214
868 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
869 * nothing), but with the PHY-level data for non-ASK PHYs (4 octets
870 * of 0 as preamble, one octet of SFD, one octet of frame length+
871 * reserved bit, and then the MAC-layer data, starting with the
872 * frame control field).
874 * Requested by Max Filippov <jcmvbkbc@gmail.com>.
876 #define DLT_IEEE802_15_4_NONASK_PHY 215
879 * David Gibson <david@gibson.dropbear.id.au> requested this for
880 * captures from the Linux kernel /dev/input/eventN devices. This
881 * is used to communicate keystrokes and mouse movements from the
882 * Linux kernel to display systems, such as Xorg.
884 #define DLT_LINUX_EVDEV 216
887 * GSM Um and Abis interfaces, preceded by a "gsmtap" header.
889 * Requested by Harald Welte <laforge@gnumonks.org>.
891 #define DLT_GSMTAP_UM 217
892 #define DLT_GSMTAP_ABIS 218
895 * MPLS, with an MPLS label as the link-layer header.
896 * Requested by Michele Marchetto <michele@openbsd.org> on behalf
902 * USB packets, beginning with a Linux USB header, with the USB header
903 * padded to 64 bytes; required for memory-mapped access.
905 #define DLT_USB_LINUX_MMAPPED 220
908 * DECT packets, with a pseudo-header; requested by
909 * Matthias Wenzel <tcpdump@mazzoo.de>.
914 * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <eric.lidwa-1@nasa.gov>
915 * Date: Mon, 11 May 2009 11:18:30 -0500
917 * DLT_AOS. We need it for AOS Space Data Link Protocol.
918 * I have already written dissectors for but need an OK from
919 * legal before I can submit a patch.
925 * Wireless HART (Highway Addressable Remote Transducer)
926 * From the HART Communication Foundation
929 * Requested by Sam Roberts <vieuxtech@gmail.com>.
931 #define DLT_WIHART 223
934 * Fibre Channel FC-2 frames, beginning with a Frame_Header.
935 * Requested by Kahou Lei <kahou82@gmail.com>.
940 * Fibre Channel FC-2 frames, beginning with an encoding of the
941 * SOF, and ending with an encoding of the EOF.
943 * The encodings represent the frame delimiters as 4-byte sequences
944 * representing the corresponding ordered sets, with K28.5
945 * represented as 0xBC, and the D symbols as the corresponding
946 * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2,
947 * is represented as 0xBC 0xB5 0x55 0x55.
949 * Requested by Kahou Lei <kahou82@gmail.com>.
951 #define DLT_FC_2_WITH_FRAME_DELIMS 225
954 * Solaris ipnet pseudo-header; requested by Darren Reed <Darren.Reed@Sun.COM>.
956 * The pseudo-header starts with a one-byte version number; for version 2,
957 * the pseudo-header is:
959 * struct dl_ipnetinfo {
960 * uint8_t dli_version;
961 * uint8_t dli_family;
962 * uint16_t dli_htype;
963 * uint32_t dli_pktlen;
964 * uint32_t dli_ifindex;
965 * uint32_t dli_grifindex;
970 * dli_version is 2 for the current version of the pseudo-header.
972 * dli_family is a Solaris address family value, so it's 2 for IPv4
975 * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing
976 * packets, and 2 for packets arriving from another zone on the same
979 * dli_pktlen is the length of the packet data following the pseudo-header
980 * (so the captured length minus dli_pktlen is the length of the
981 * pseudo-header, assuming the entire pseudo-header was captured).
983 * dli_ifindex is the interface index of the interface on which the
986 * dli_grifindex is the group interface index number (for IPMP interfaces).
988 * dli_zsrc is the zone identifier for the source of the packet.
990 * dli_zdst is the zone identifier for the destination of the packet.
992 * A zone number of 0 is the global zone; a zone number of 0xffffffff
993 * means that the packet arrived from another host on the network, not
994 * from another zone on the same machine.
996 * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates
997 * which of those it is.
999 #define DLT_IPNET 226
1002 * CAN (Controller Area Network) frames, with a pseudo-header as supplied
1003 * by Linux SocketCAN, and with multi-byte numerical fields in that header
1004 * in big-endian byte order.
1006 * See Documentation/networking/can.txt in the Linux source.
1008 * Requested by Felix Obenhuber <felix@obenhuber.de>.
1010 #define DLT_CAN_SOCKETCAN 227
1013 * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies
1014 * whether it's v4 or v6. Requested by Darren Reed <Darren.Reed@Sun.COM>.
1016 #define DLT_IPV4 228
1017 #define DLT_IPV6 229
1020 * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
1021 * nothing), and with no FCS at the end of the frame; requested by
1022 * Jon Smirl <jonsmirl@gmail.com>.
1024 #define DLT_IEEE802_15_4_NOFCS 230
1029 * http://www.freedesktop.org/wiki/Software/dbus
1033 * http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages
1035 * starting with the endianness flag, followed by the message type, etc.,
1036 * but without the authentication handshake before the message sequence:
1038 * http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol
1040 * Requested by Martin Vidner <martin@vidner.net>.
1042 #define DLT_DBUS 231
1045 * Juniper-private data link type, as per request from
1046 * Hannes Gredler <hannes@juniper.net>.
1048 #define DLT_JUNIPER_VS 232
1049 #define DLT_JUNIPER_SRX_E2E 233
1050 #define DLT_JUNIPER_FIBRECHANNEL 234
1053 * DVB-CI (DVB Common Interface for communication between a PC Card
1054 * module and a DVB receiver). See
1056 * http://www.kaiser.cx/pcap-dvbci.html
1058 * for the specification.
1060 * Requested by Martin Kaiser <martin@kaiser.cx>.
1062 #define DLT_DVB_CI 235
1065 * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but
1066 * *not* the same as, 27.010). Requested by Hans-Christoph Schemmel
1067 * <hans-christoph.schemmel@cinterion.com>.
1069 #define DLT_MUX27010 236
1072 * STANAG 5066 D_PDUs. Requested by M. Baris Demiray
1073 * <barisdemiray@gmail.com>.
1075 #define DLT_STANAG_5066_D_PDU 237
1078 * Juniper-private data link type, as per request from
1079 * Hannes Gredler <hannes@juniper.net>.
1081 #define DLT_JUNIPER_ATM_CEMIC 238
1084 * NetFilter LOG messages
1085 * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets)
1087 * Requested by Jakub Zawadzki <darkjames-ws@darkjames.pl>
1089 #define DLT_NFLOG 239
1092 * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
1093 * for Ethernet packets with a 4-byte pseudo-header and always
1094 * with the payload including the FCS, as supplied by their
1095 * netANALYZER hardware and software.
1097 * Requested by Holger P. Frommer <HPfrommer@hilscher.com>
1099 #define DLT_NETANALYZER 240
1102 * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
1103 * for Ethernet packets with a 4-byte pseudo-header and FCS and
1104 * with the Ethernet header preceded by 7 bytes of preamble and
1105 * 1 byte of SFD, as supplied by their netANALYZER hardware and
1108 * Requested by Holger P. Frommer <HPfrommer@hilscher.com>
1110 #define DLT_NETANALYZER_TRANSPARENT 241
1113 * IP-over-InfiniBand, as specified by RFC 4391.
1115 * Requested by Petr Sumbera <petr.sumbera@oracle.com>.
1117 #define DLT_IPOIB 242
1120 * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0).
1122 * Requested by Guy Martin <gmsoft@tuxicoman.be>.
1124 #define DLT_MPEG_2_TS 243
1127 * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as
1128 * used by their ng40 protocol tester.
1130 * Requested by Jens Grimmer <jens.grimmer@ng4t.com>.
1132 #define DLT_NG40 244
1135 * Pseudo-header giving adapter number and flags, followed by an NFC
1136 * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU,
1137 * as specified by NFC Forum Logical Link Control Protocol Technical
1138 * Specification LLCP 1.1.
1140 * Requested by Mike Wakerly <mikey@google.com>.
1142 #define DLT_NFC_LLCP 245
1145 * 246 is used as LINKTYPE_PFSYNC; do not use it for any other purpose.
1147 * DLT_PFSYNC has different values on different platforms, and all of
1148 * them collide with something used elsewhere. On platforms that
1149 * don't already define it, define it as 246.
1151 #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__) && !defined(__APPLE__)
1152 #define DLT_PFSYNC 246
1156 * Raw InfiniBand packets, starting with the Local Routing Header.
1158 * Requested by Oren Kladnitsky <orenk@mellanox.com>.
1160 #define DLT_INFINIBAND 247
1163 * SCTP, with no lower-level protocols (i.e., no IPv4 or IPv6).
1165 * Requested by Michael Tuexen <Michael.Tuexen@lurchi.franken.de>.
1167 #define DLT_SCTP 248
1170 * USB packets, beginning with a USBPcap header.
1172 * Requested by Tomasz Mon <desowin@gmail.com>
1174 #define DLT_USBPCAP 249
1177 * Schweitzer Engineering Laboratories "RTAC" product serial-line
1180 * Requested by Chris Bontje <chris_bontje@selinc.com>.
1182 #define DLT_RTAC_SERIAL 250
1185 * Bluetooth Low Energy air interface link-layer packets.
1187 * Requested by Mike Kershaw <dragorn@kismetwireless.net>.
1189 #define DLT_BLUETOOTH_LE_LL 251
1192 * DLT type for upper-protocol layer PDU saves from wireshark.
1194 * the actual contents are determined by two TAGs stored with each
1196 * EXP_PDU_TAG_LINKTYPE the link type (LINKTYPE_ value) of the
1199 * EXP_PDU_TAG_PROTO_NAME the name of the wireshark dissector
1200 * that can make sense of the data stored.
1202 #define DLT_WIRESHARK_UPPER_PDU 252
1205 * DLT type for the netlink protocol (nlmon devices).
1207 #define DLT_NETLINK 253
1210 * Bluetooth Linux Monitor headers for the BlueZ stack.
1212 #define DLT_BLUETOOTH_LINUX_MONITOR 254
1215 * Bluetooth Basic Rate/Enhanced Data Rate baseband packets, as
1216 * captured by Ubertooth.
1218 #define DLT_BLUETOOTH_BREDR_BB 255
1221 * Bluetooth Low Energy link layer packets, as captured by Ubertooth.
1223 #define DLT_BLUETOOTH_LE_LL_WITH_PHDR 256
1226 * PROFIBUS data link layer.
1228 #define DLT_PROFIBUS_DL 257
1231 * Apple's DLT_PKTAP headers.
1233 * Sadly, the folks at Apple either had no clue that the DLT_USERn values
1234 * are for internal use within an organization and partners only, and
1235 * didn't know that the right way to get a link-layer header type is to
1236 * ask tcpdump.org for one, or knew and didn't care, so they just
1237 * used DLT_USER2, which causes problems for everything except for
1238 * their version of tcpdump.
1240 * So I'll just give them one; hopefully this will show up in a
1241 * libpcap release in time for them to get this into 10.10 Big Sur
1242 * or whatever Mavericks' successor is called. LINKTYPE_PKTAP
1243 * will be 258 *even on macOS*; that is *intentional*, so that
1244 * PKTAP files look the same on *all* OSes (different OSes can have
1245 * different numerical values for a given DLT_, but *MUST NOT* have
1246 * different values for what goes in a file, as files can be moved
1249 * When capturing, on a system with a Darwin-based OS, on a device
1250 * that returns 149 (DLT_USER2 and Apple's DLT_PKTAP) with this
1251 * version of libpcap, the DLT_ value for the pcap_t will be DLT_PKTAP,
1252 * and that will continue to be DLT_USER2 on Darwin-based OSes. That way,
1253 * binary compatibility with Mavericks is preserved for programs using
1254 * this version of libpcap. This does mean that if you were using
1255 * DLT_USER2 for some capture device on macOS, you can't do so with
1256 * this version of libpcap, just as you can't with Apple's libpcap -
1257 * on macOS, they define DLT_PKTAP to be DLT_USER2, so programs won't
1258 * be able to distinguish between PKTAP and whatever you were using
1261 * If the program saves the capture to a file using this version of
1262 * libpcap's pcap_dump code, the LINKTYPE_ value in the file will be
1263 * LINKTYPE_PKTAP, which will be 258, even on Darwin-based OSes.
1264 * That way, the file will *not* be a DLT_USER2 file. That means
1265 * that the latest version of tcpdump, when built with this version
1266 * of libpcap, and sufficiently recent versions of Wireshark will
1267 * be able to read those files and interpret them correctly; however,
1268 * Apple's version of tcpdump in OS X 10.9 won't be able to handle
1269 * them. (Hopefully, Apple will pick up this version of libpcap,
1270 * and the corresponding version of tcpdump, so that tcpdump will
1271 * be able to handle the old LINKTYPE_USER2 captures *and* the new
1272 * LINKTYPE_PKTAP captures.)
1275 #define DLT_PKTAP DLT_USER2
1277 #define DLT_PKTAP 258
1281 * Ethernet packets preceded by a header giving the last 6 octets
1282 * of the preamble specified by 802.3-2012 Clause 65, section
1283 * 65.1.3.2 "Transmit".
1285 #define DLT_EPON 259
1288 * IPMI trace packets, as specified by Table 3-20 "Trace Data Block Format"
1289 * in the PICMG HPM.2 specification.
1291 #define DLT_IPMI_HPM_2 260
1294 * per Joshua Wright <jwright@hasborg.com>, formats for Zwave captures.
1296 #define DLT_ZWAVE_R1_R2 261
1297 #define DLT_ZWAVE_R3 262
1300 * per Steve Karg <skarg@users.sourceforge.net>, formats for Wattstopper
1301 * Digital Lighting Management room bus serial protocol captures.
1303 #define DLT_WATTSTOPPER_DLM 263
1306 * ISO 14443 contactless smart card messages.
1308 #define DLT_ISO_14443 264
1311 * Radio data system (RDS) groups. IEC 62106.
1312 * Per Jonathan Brucker <jonathan.brucke@gmail.com>.
1317 * USB packets, beginning with a Darwin (macOS, etc.) header.
1319 #define DLT_USB_DARWIN 266
1322 * OpenBSD DLT_OPENFLOW.
1324 #define DLT_OPENFLOW 267
1327 * SDLC frames containing SNA PDUs.
1329 #define DLT_SDLC 268
1332 * per "Selvig, Bjorn" <b.selvig@ti.com> used for
1333 * TI protocol sniffer.
1335 #define DLT_TI_LLN_SNIFFER 269
1338 * per: Erik de Jong <erikdejong at gmail.com> for
1339 * https://github.com/eriknl/LoRaTap/releases/tag/v0.1
1341 #define DLT_LORATAP 270
1344 * per: Stefanha at gmail.com for
1345 * http://lists.sandelman.ca/pipermail/tcpdump-workers/2017-May/000772.html
1346 * and: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/uapi/linux/vsockmon.h
1347 * for: http://qemu-project.org/Features/VirtioVsock
1349 #define DLT_VSOCK 271
1352 * Nordic Semiconductor Bluetooth LE sniffer.
1354 #define DLT_NORDIC_BLE 272
1357 * Excentis DOCSIS 3.1 RF sniffer (XRA-31)
1358 * per: bruno.verstuyft at excentis.com
1359 * http://www.xra31.com/xra-header
1361 #define DLT_DOCSIS31_XRA31 273
1364 * mPackets, as specified by IEEE 802.3br Figure 99-4, starting
1365 * with the preamble and always ending with a CRC field.
1367 #define DLT_ETHERNET_MPACKET 274
1370 * DisplayPort AUX channel monitoring data as specified by VESA
1371 * DisplayPort(DP) Standard preceeded by a pseudo-header.
1372 * per dirk.eibach at gdsys.cc
1374 #define DLT_DISPLAYPORT_AUX 275
1377 * Linux cooked sockets v2.
1379 #define DLT_LINUX_SLL2 276
1382 * In case the code that includes this file (directly or indirectly)
1383 * has also included OS files that happen to define DLT_MATCHING_MAX,
1384 * with a different value (perhaps because that OS hasn't picked up
1385 * the latest version of our DLT definitions), we undefine the
1386 * previous value of DLT_MATCHING_MAX.
1388 #ifdef DLT_MATCHING_MAX
1389 #undef DLT_MATCHING_MAX
1391 #define DLT_MATCHING_MAX 276 /* highest value in the "matching" range */
1394 * DLT and savefile link type values are split into a class and
1395 * a member of that class. A class value of 0 indicates a regular
1396 * DLT_/LINKTYPE_ value.
1398 #define DLT_CLASS(x) ((x) & 0x03ff0000)
1401 * NetBSD-specific generic "raw" link type. The class value indicates
1402 * that this is the generic raw type, and the lower 16 bits are the
1403 * address family we're dealing with. Those values are NetBSD-specific;
1404 * do not assume that they correspond to AF_ values for your operating
1407 #define DLT_CLASS_NETBSD_RAWAF 0x02240000
1408 #define DLT_NETBSD_RAWAF(af) (DLT_CLASS_NETBSD_RAWAF | (af))
1409 #define DLT_NETBSD_RAWAF_AF(x) ((x) & 0x0000ffff)
1410 #define DLT_IS_NETBSD_RAWAF(x) (DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF)
1412 #endif /* !_NET_DLT_H_ */