Main Page | Modules | Class List | Directories | File List | Class Members | File Members | Related Pages

pcap-bpf.h

Go to the documentation of this file.
00001 /*-
00002  * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
00003  *      The Regents of the University of California.  All rights reserved.
00004  *
00005  * This code is derived from the Stanford/CMU enet packet filter,
00006  * (net/enet.c) distributed as part of 4.3BSD, and code contributed
00007  * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence 
00008  * Berkeley Laboratory.
00009  *
00010  * Redistribution and use in source and binary forms, with or without
00011  * modification, are permitted provided that the following conditions
00012  * are met:
00013  * 1. Redistributions of source code must retain the above copyright
00014  *    notice, this list of conditions and the following disclaimer.
00015  * 2. Redistributions in binary form must reproduce the above copyright
00016  *    notice, this list of conditions and the following disclaimer in the
00017  *    documentation and/or other materials provided with the distribution.
00018  * 3. All advertising materials mentioning features or use of this software
00019  *    must display the following acknowledgement:
00020  *      This product includes software developed by the University of
00021  *      California, Berkeley and its contributors.
00022  * 4. Neither the name of the University nor the names of its contributors
00023  *    may be used to endorse or promote products derived from this software
00024  *    without specific prior written permission.
00025  *
00026  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
00027  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00028  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00029  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
00030  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00031  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00032  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00033  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00034  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00035  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00036  * SUCH DAMAGE.
00037  *
00038  *      @(#)bpf.h       7.1 (Berkeley) 5/7/91
00039  *
00040  * @(#) $Header$ (LBL)
00041  */
00042 
00043 /*
00044  * This is libpcap's cut-down version of bpf.h; it includes only
00045  * the stuff needed for the code generator and the userland BPF
00046  * interpreter, and the libpcap APIs for setting filters, etc..
00047  *
00048  * "pcap-bpf.c" will include the native OS version, as it deals with
00049  * the OS's BPF implementation.
00050  *
00051  * XXX - should this all just be moved to "pcap.h"?
00052  */
00053 
00054 #ifndef BPF_MAJOR_VERSION
00055 
00056 #ifdef __cplusplus
00057 extern "C" {
00058 #endif
00059 
00060 /* BSD style release date */
00061 #define BPF_RELEASE 199606
00062 
00063 #ifdef MSDOS /* must be 32-bit */
00064 typedef long          bpf_int32;
00065 typedef unsigned long bpf_u_int32;
00066 #else
00067 typedef int bpf_int32;
00068 typedef u_int bpf_u_int32;
00069 #endif
00070 
00071 /*
00072  * Alignment macros.  BPF_WORDALIGN rounds up to the next 
00073  * even multiple of BPF_ALIGNMENT. 
00074  */
00075 #ifndef __NetBSD__
00076 #define BPF_ALIGNMENT sizeof(bpf_int32)
00077 #else
00078 #define BPF_ALIGNMENT sizeof(long)
00079 #endif
00080 #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1))
00081 
00082 #define BPF_MAXINSNS 512
00083 #define BPF_MAXBUFSIZE 0x8000
00084 #define BPF_MINBUFSIZE 32
00085 
00086 /*
00087  * Structure for "pcap_compile()", "pcap_setfilter()", etc..
00088  */
00089 struct bpf_program {
00090         u_int bf_len;
00091         struct bpf_insn *bf_insns;
00092 };
00093  
00094 /*
00095  * Struct return by BIOCVERSION.  This represents the version number of 
00096  * the filter language described by the instruction encodings below.
00097  * bpf understands a program iff kernel_major == filter_major &&
00098  * kernel_minor >= filter_minor, that is, if the value returned by the
00099  * running kernel has the same major number and a minor number equal
00100  * equal to or less than the filter being downloaded.  Otherwise, the
00101  * results are undefined, meaning an error may be returned or packets
00102  * may be accepted haphazardly.
00103  * It has nothing to do with the source code version.
00104  */
00105 struct bpf_version {
00106         u_short bv_major;
00107         u_short bv_minor;
00108 };
00109 /* Current version number of filter architecture. */
00110 #define BPF_MAJOR_VERSION 1
00111 #define BPF_MINOR_VERSION 1
00112 
00113 /*
00114  * Data-link level type codes.
00115  *
00116  * Do *NOT* add new values to this list without asking
00117  * "tcpdump-workers@tcpdump.org" for a value.  Otherwise, you run the
00118  * risk of using a value that's already being used for some other purpose,
00119  * and of having tools that read libpcap-format captures not being able
00120  * to handle captures with your new DLT_ value, with no hope that they
00121  * will ever be changed to do so (as that would destroy their ability
00122  * to read captures using that value for that other purpose).
00123  */
00124 
00125 /*
00126  * These are the types that are the same on all platforms, and that
00127  * have been defined by <net/bpf.h> for ages.
00128  */
00129 #define DLT_NULL        0       /* BSD loopback encapsulation */
00130 #define DLT_EN10MB      1       /* Ethernet (10Mb) */
00131 #define DLT_EN3MB       2       /* Experimental Ethernet (3Mb) */
00132 #define DLT_AX25        3       /* Amateur Radio AX.25 */
00133 #define DLT_PRONET      4       /* Proteon ProNET Token Ring */
00134 #define DLT_CHAOS       5       /* Chaos */
00135 #define DLT_IEEE802     6       /* IEEE 802 Networks */
00136 #define DLT_ARCNET      7       /* ARCNET, with BSD-style header */
00137 #define DLT_SLIP        8       /* Serial Line IP */
00138 #define DLT_PPP         9       /* Point-to-point Protocol */
00139 #define DLT_FDDI        10      /* FDDI */
00140 
00141 /*
00142  * These are types that are different on some platforms, and that
00143  * have been defined by <net/bpf.h> for ages.  We use #ifdefs to
00144  * detect the BSDs that define them differently from the traditional
00145  * libpcap <net/bpf.h>
00146  *
00147  * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS,
00148  * but I don't know what the right #define is for BSD/OS.
00149  */
00150 #define DLT_ATM_RFC1483 11      /* LLC-encapsulated ATM */
00151 
00152 #ifdef __OpenBSD__
00153 #define DLT_RAW         14      /* raw IP */
00154 #else
00155 #define DLT_RAW         12      /* raw IP */
00156 #endif
00157 
00158 /*
00159  * Given that the only OS that currently generates BSD/OS SLIP or PPP
00160  * is, well, BSD/OS, arguably everybody should have chosen its values
00161  * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they
00162  * didn't.  So it goes.
00163  */
00164 #if defined(__NetBSD__) || defined(__FreeBSD__)
00165 #ifndef DLT_SLIP_BSDOS
00166 #define DLT_SLIP_BSDOS  13      /* BSD/OS Serial Line IP */
00167 #define DLT_PPP_BSDOS   14      /* BSD/OS Point-to-point Protocol */
00168 #endif
00169 #else
00170 #define DLT_SLIP_BSDOS  15      /* BSD/OS Serial Line IP */
00171 #define DLT_PPP_BSDOS   16      /* BSD/OS Point-to-point Protocol */
00172 #endif
00173 
00174 /*
00175  * 17 is used for DLT_OLD_PFLOG in OpenBSD;
00176  *     OBSOLETE: DLT_PFLOG is 117 in OpenBSD now as well. See below.
00177  * 18 is used for DLT_PFSYNC in OpenBSD; don't use it for anything else.
00178  */
00179 
00180 #define DLT_ATM_CLIP    19      /* Linux Classical-IP over ATM */
00181 
00182 /*
00183  * Apparently Redback uses this for its SmartEdge 400/800.  I hope
00184  * nobody else decided to use it, too.
00185  */
00186 #define DLT_REDBACK_SMARTEDGE   32
00187 
00188 /*
00189  * These values are defined by NetBSD; other platforms should refrain from
00190  * using them for other purposes, so that NetBSD savefiles with link
00191  * types of 50 or 51 can be read as this type on all platforms.
00192  */
00193 #define DLT_PPP_SERIAL  50      /* PPP over serial with HDLC encapsulation */
00194 #define DLT_PPP_ETHER   51      /* PPP over Ethernet */
00195 
00196 /*
00197  * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses
00198  * a link-layer type of 99 for the tcpdump it supplies.  The link-layer
00199  * header has 6 bytes of unknown data, something that appears to be an
00200  * Ethernet type, and 36 bytes that appear to be 0 in at least one capture
00201  * I've seen.
00202  */
00203 #define DLT_SYMANTEC_FIREWALL   99
00204 
00205 /*
00206  * Values between 100 and 103 are used in capture file headers as
00207  * link-layer types corresponding to DLT_ types that differ
00208  * between platforms; don't use those values for new DLT_ new types.
00209  */
00210 
00211 /*
00212  * This value was defined by libpcap 0.5; platforms that have defined
00213  * it with a different value should define it here with that value -
00214  * a link type of 104 in a save file will be mapped to DLT_C_HDLC,
00215  * whatever value that happens to be, so programs will correctly
00216  * handle files with that link type regardless of the value of
00217  * DLT_C_HDLC.
00218  *
00219  * The name DLT_C_HDLC was used by BSD/OS; we use that name for source
00220  * compatibility with programs written for BSD/OS.
00221  *
00222  * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well,
00223  * for source compatibility with programs written for libpcap 0.5.
00224  */
00225 #define DLT_C_HDLC      104     /* Cisco HDLC */
00226 #define DLT_CHDLC       DLT_C_HDLC
00227 
00228 #define DLT_IEEE802_11  105     /* IEEE 802.11 wireless */
00229 
00230 /*
00231  * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW,
00232  * except when it isn't.  (I.e., sometimes it's just raw IP, and
00233  * sometimes it isn't.)  We currently handle it as DLT_LINUX_SLL,
00234  * so that we don't have to worry about the link-layer header.)
00235  */
00236 
00237 /*
00238  * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides
00239  * with other values.
00240  * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header
00241  * (DLCI, etc.).
00242  */
00243 #define DLT_FRELAY      107
00244 
00245 /*
00246  * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except
00247  * that the AF_ type in the link-layer header is in network byte order.
00248  *
00249  * OpenBSD defines it as 12, but that collides with DLT_RAW, so we
00250  * define it as 108 here.  If OpenBSD picks up this file, it should
00251  * define DLT_LOOP as 12 in its version, as per the comment above -
00252  * and should not use 108 as a DLT_ value.
00253  */
00254 #define DLT_LOOP        108
00255 
00256 /*
00257  * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's
00258  * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other
00259  * than OpenBSD.
00260  */
00261 #ifdef __OpenBSD__
00262 #define DLT_ENC         13
00263 #else
00264 #define DLT_ENC         109
00265 #endif
00266 
00267 /*
00268  * Values between 110 and 112 are reserved for use in capture file headers
00269  * as link-layer types corresponding to DLT_ types that might differ
00270  * between platforms; don't use those values for new DLT_ types
00271  * other than the corresponding DLT_ types.
00272  */
00273 
00274 /*
00275  * This is for Linux cooked sockets.
00276  */
00277 #define DLT_LINUX_SLL   113
00278 
00279 /*
00280  * Apple LocalTalk hardware.
00281  */
00282 #define DLT_LTALK       114
00283 
00284 /*
00285  * Acorn Econet.
00286  */
00287 #define DLT_ECONET      115
00288 
00289 /*
00290  * Reserved for use with OpenBSD ipfilter.
00291  */
00292 #define DLT_IPFILTER    116
00293 
00294 /*
00295  * OpenBSD DLT_PFLOG; DLT_PFLOG is 17 in OpenBSD, but that's DLT_LANE8023
00296  * in SuSE 6.3, so we can't use 17 for it in capture-file headers.
00297  *
00298  * XXX: is there a conflict with DLT_PFSYNC 18 as well?
00299  */
00300 #ifdef __OpenBSD__
00301 #define DLT_OLD_PFLOG   17
00302 #define DLT_PFSYNC      18
00303 #endif
00304 #define DLT_PFLOG       117
00305 
00306 /*
00307  * Registered for Cisco-internal use.
00308  */
00309 #define DLT_CISCO_IOS   118
00310 
00311 /*
00312  * For 802.11 cards using the Prism II chips, with a link-layer
00313  * header including Prism monitor mode information plus an 802.11
00314  * header.
00315  */
00316 #define DLT_PRISM_HEADER        119
00317 
00318 /*
00319  * Reserved for Aironet 802.11 cards, with an Aironet link-layer header
00320  * (see Doug Ambrisko's FreeBSD patches).
00321  */
00322 #define DLT_AIRONET_HEADER      120
00323 
00324 /*
00325  * Reserved for Siemens HiPath HDLC.
00326  */
00327 #define DLT_HHDLC               121
00328 
00329 /*
00330  * This is for RFC 2625 IP-over-Fibre Channel.
00331  *
00332  * This is not for use with raw Fibre Channel, where the link-layer
00333  * header starts with a Fibre Channel frame header; it's for IP-over-FC,
00334  * where the link-layer header starts with an RFC 2625 Network_Header
00335  * field.
00336  */
00337 #define DLT_IP_OVER_FC          122
00338 
00339 /*
00340  * This is for Full Frontal ATM on Solaris with SunATM, with a
00341  * pseudo-header followed by an AALn PDU.
00342  *
00343  * There may be other forms of Full Frontal ATM on other OSes,
00344  * with different pseudo-headers.
00345  *
00346  * If ATM software returns a pseudo-header with VPI/VCI information
00347  * (and, ideally, packet type information, e.g. signalling, ILMI,
00348  * LANE, LLC-multiplexed traffic, etc.), it should not use
00349  * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump
00350  * and the like don't have to infer the presence or absence of a
00351  * pseudo-header and the form of the pseudo-header.
00352  */
00353 #define DLT_SUNATM              123     /* Solaris+SunATM */
00354 
00355 /* 
00356  * Reserved as per request from Kent Dahlgren <kent@praesum.com>
00357  * for private use.
00358  */
00359 #define DLT_RIO                 124     /* RapidIO */
00360 #define DLT_PCI_EXP             125     /* PCI Express */
00361 #define DLT_AURORA              126     /* Xilinx Aurora link layer */
00362 
00363 /*
00364  * Header for 802.11 plus a number of bits of link-layer information
00365  * including radio information, used by some recent BSD drivers as
00366  * well as the madwifi Atheros driver for Linux.
00367  */
00368 #define DLT_IEEE802_11_RADIO    127     /* 802.11 plus radiotap radio header */
00369 
00370 /*
00371  * Reserved for the TZSP encapsulation, as per request from
00372  * Chris Waters <chris.waters@networkchemistry.com>
00373  * TZSP is a generic encapsulation for any other link type,
00374  * which includes a means to include meta-information
00375  * with the packet, e.g. signal strength and channel
00376  * for 802.11 packets.
00377  */
00378 #define DLT_TZSP                128     /* Tazmen Sniffer Protocol */
00379 
00380 /*
00381  * BSD's ARCNET headers have the source host, destination host,
00382  * and type at the beginning of the packet; that's what's handed
00383  * up to userland via BPF.
00384  *
00385  * Linux's ARCNET headers, however, have a 2-byte offset field
00386  * between the host IDs and the type; that's what's handed up
00387  * to userland via PF_PACKET sockets.
00388  *
00389  * We therefore have to have separate DLT_ values for them.
00390  */
00391 #define DLT_ARCNET_LINUX        129     /* ARCNET */
00392 
00393 /*
00394  * Juniper-private data link types, as per request from
00395  * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
00396  * for passing on chassis-internal metainformation such as
00397  * QOS profiles, etc..
00398  */
00399 #define DLT_JUNIPER_MLPPP       130
00400 #define DLT_JUNIPER_MLFR        131
00401 #define DLT_JUNIPER_ES          132
00402 #define DLT_JUNIPER_GGSN        133
00403 #define DLT_JUNIPER_MFR         134
00404 #define DLT_JUNIPER_ATM2        135
00405 #define DLT_JUNIPER_SERVICES    136
00406 #define DLT_JUNIPER_ATM1        137
00407 
00408 /*
00409  * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund
00410  * <dieter@apple.com>.  The header that's presented is an Ethernet-like
00411  * header:
00412  *
00413  *      #define FIREWIRE_EUI64_LEN      8
00414  *      struct firewire_header {
00415  *              u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
00416  *              u_char  firewire_shost[FIREWIRE_EUI64_LEN];
00417  *              u_short firewire_type;
00418  *      };
00419  *
00420  * with "firewire_type" being an Ethernet type value, rather than,
00421  * for example, raw GASP frames being handed up.
00422  */
00423 #define DLT_APPLE_IP_OVER_IEEE1394      138
00424 
00425 /*
00426  * Various SS7 encapsulations, as per a request from Jeff Morriss
00427  * <jeff.morriss[AT]ulticom.com> and subsequent discussions.
00428  */
00429 #define DLT_MTP2_WITH_PHDR      139     /* pseudo-header with various info, followed by MTP2 */
00430 #define DLT_MTP2                140     /* MTP2, without pseudo-header */
00431 #define DLT_MTP3                141     /* MTP3, without pseudo-header or MTP2 */
00432 #define DLT_SCCP                142     /* SCCP, without pseudo-header or MTP2 or MTP3 */
00433 
00434 /*
00435  * DOCSIS MAC frames.
00436  */
00437 #define DLT_DOCSIS              143
00438 
00439 /*
00440  * Linux-IrDA packets. Protocol defined at http://www.irda.org.
00441  * Those packets include IrLAP headers and above (IrLMP...), but
00442  * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy
00443  * framing can be handled by the hardware and depend on the bitrate.
00444  * This is exactly the format you would get capturing on a Linux-IrDA
00445  * interface (irdaX), but not on a raw serial port.
00446  * Note the capture is done in "Linux-cooked" mode, so each packet include
00447  * a fake packet header (struct sll_header). This is because IrDA packet
00448  * decoding is dependant on the direction of the packet (incomming or
00449  * outgoing).
00450  * When/if other platform implement IrDA capture, we may revisit the
00451  * issue and define a real DLT_IRDA...
00452  * Jean II
00453  */
00454 #define DLT_LINUX_IRDA          144
00455 
00456 /*
00457  * Reserved for IBM SP switch and IBM Next Federation switch.
00458  */
00459 #define DLT_IBM_SP              145
00460 #define DLT_IBM_SN              146
00461 
00462 /*
00463  * Reserved for private use.  If you have some link-layer header type
00464  * that you want to use within your organization, with the capture files
00465  * using that link-layer header type not ever be sent outside your
00466  * organization, you can use these values.
00467  *
00468  * No libpcap release will use these for any purpose, nor will any
00469  * tcpdump release use them, either.
00470  *
00471  * Do *NOT* use these in capture files that you expect anybody not using
00472  * your private versions of capture-file-reading tools to read; in
00473  * particular, do *NOT* use them in products, otherwise you may find that
00474  * people won't be able to use tcpdump, or snort, or Ethereal, or... to
00475  * read capture files from your firewall/intrusion detection/traffic
00476  * monitoring/etc. appliance, or whatever product uses that DLT_ value,
00477  * and you may also find that the developers of those applications will
00478  * not accept patches to let them read those files.
00479  *
00480  * Also, do not use them if somebody might send you a capture using them
00481  * for *their* private type and tools using them for *your* private type
00482  * would have to read them.
00483  *
00484  * Instead, ask "tcpdump-workers@tcpdump.org" for a new DLT_ value,
00485  * as per the comment above, and use the type you're given.
00486  */
00487 #define DLT_USER0               147
00488 #define DLT_USER1               148
00489 #define DLT_USER2               149
00490 #define DLT_USER3               150
00491 #define DLT_USER4               151
00492 #define DLT_USER5               152
00493 #define DLT_USER6               153
00494 #define DLT_USER7               154
00495 #define DLT_USER8               155
00496 #define DLT_USER9               156
00497 #define DLT_USER10              157
00498 #define DLT_USER11              158
00499 #define DLT_USER12              159
00500 #define DLT_USER13              160
00501 #define DLT_USER14              161
00502 #define DLT_USER15              162
00503 
00504 /*
00505  * For future use with 802.11 captures - defined by AbsoluteValue
00506  * Systems to store a number of bits of link-layer information
00507  * including radio information:
00508  *
00509  *      http://www.shaftnet.org/~pizza/software/capturefrm.txt
00510  *
00511  * but it might be used by some non-AVS drivers now or in the
00512  * future.
00513  */
00514 #define DLT_IEEE802_11_RADIO_AVS 163    /* 802.11 plus AVS radio header */
00515 
00516 /*
00517  * Juniper-private data link type, as per request from
00518  * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
00519  * for passing on chassis-internal metainformation such as
00520  * QOS profiles, etc..
00521  */
00522 #define DLT_JUNIPER_MONITOR     164
00523 
00524 /*
00525  * Reserved for BACnet MS/TP.
00526  */
00527 #define DLT_BACNET_MS_TP        165
00528 
00529 /*
00530  * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>.
00531  *
00532  * This is used in some OSes to allow a kernel socket filter to distinguish
00533  * between incoming and outgoing packets, on a socket intended to
00534  * supply pppd with outgoing packets so it can do dial-on-demand and
00535  * hangup-on-lack-of-demand; incoming packets are filtered out so they
00536  * don't cause pppd to hold the connection up (you don't want random
00537  * input packets such as port scans, packets from old lost connections,
00538  * etc. to force the connection to stay up).
00539  *
00540  * The first byte of the PPP header (0xff03) is modified to accomodate
00541  * the direction - 0x00 = IN, 0x01 = OUT.
00542  */
00543 #define DLT_PPP_PPPD            166
00544 
00545 /*
00546  * Names for backwards compatibility with older versions of some PPP
00547  * software; new software should use DLT_PPP_PPPD.
00548  */
00549 #define DLT_PPP_WITH_DIRECTION  DLT_PPP_PPPD
00550 #define DLT_LINUX_PPP_WITHDIRECTION     DLT_PPP_PPPD
00551 
00552 /*
00553  * Juniper-private data link type, as per request from
00554  * Hannes Gredler <hannes@juniper.net>.  The DLT_s are used
00555  * for passing on chassis-internal metainformation such as
00556  * QOS profiles, cookies, etc..
00557  */
00558 #define DLT_JUNIPER_PPPOE       167
00559 #define DLT_JUNIPER_PPPOE_ATM   168
00560 
00561 #define DLT_GPRS_LLC            169     /* GPRS LLC */
00562 #define DLT_GPF_T               170     /* GPF-T (ITU-T G.7041/Y.1303) */
00563 #define DLT_GPF_F               171     /* GPF-F (ITU-T G.7041/Y.1303) */
00564 
00565 /*
00566  * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line
00567  * monitoring equipment.
00568  */
00569 #define DLT_GCOM_T1E1           172
00570 #define DLT_GCOM_SERIAL         173
00571 
00572 /*
00573  * Juniper-private data link type, as per request from
00574  * Hannes Gredler <hannes@juniper.net>.  The DLT_ is used
00575  * for internal communication to Physical Interface Cards (PIC)
00576  */
00577 #define DLT_JUNIPER_PIC_PEER    174
00578 
00579 /*
00580  * Link types requested by Gregor Maier <gregor@endace.com> of Endace
00581  * Measurement Systems.  They add an ERF header (see
00582  * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
00583  * the link-layer header.
00584  */
00585 #define DLT_ERF_ETH             175     /* Ethernet */
00586 #define DLT_ERF_POS             176     /* Packet-over-SONET */
00587 
00588 /*
00589  * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD
00590  * for vISDN (http://www.orlandi.com/visdn/).  Its link-layer header
00591  * includes additional information before the LAPD header, so it's
00592  * not necessarily a generic LAPD header.
00593  */
00594 #define DLT_LINUX_LAPD          177
00595 
00596 /*
00597  * The instruction encodings.
00598  */
00599 /* instruction classes */
00600 #define BPF_CLASS(code) ((code) & 0x07)
00601 #define         BPF_LD          0x00
00602 #define         BPF_LDX         0x01
00603 #define         BPF_ST          0x02
00604 #define         BPF_STX         0x03
00605 #define         BPF_ALU         0x04
00606 #define         BPF_JMP         0x05
00607 #define         BPF_RET         0x06
00608 #define         BPF_MISC        0x07
00609 
00610 /* ld/ldx fields */
00611 #define BPF_SIZE(code)  ((code) & 0x18)
00612 #define         BPF_W           0x00
00613 #define         BPF_H           0x08
00614 #define         BPF_B           0x10
00615 #define BPF_MODE(code)  ((code) & 0xe0)
00616 #define         BPF_IMM         0x00
00617 #define         BPF_ABS         0x20
00618 #define         BPF_IND         0x40
00619 #define         BPF_MEM         0x60
00620 #define         BPF_LEN         0x80
00621 #define         BPF_MSH         0xa0
00622 
00623 /* alu/jmp fields */
00624 #define BPF_OP(code)    ((code) & 0xf0)
00625 #define         BPF_ADD         0x00
00626 #define         BPF_SUB         0x10
00627 #define         BPF_MUL         0x20
00628 #define         BPF_DIV         0x30
00629 #define         BPF_OR          0x40
00630 #define         BPF_AND         0x50
00631 #define         BPF_LSH         0x60
00632 #define         BPF_RSH         0x70
00633 #define         BPF_NEG         0x80
00634 #define         BPF_JA          0x00
00635 #define         BPF_JEQ         0x10
00636 #define         BPF_JGT         0x20
00637 #define         BPF_JGE         0x30
00638 #define         BPF_JSET        0x40
00639 #define BPF_SRC(code)   ((code) & 0x08)
00640 #define         BPF_K           0x00
00641 #define         BPF_X           0x08
00642 
00643 /* ret - BPF_K and BPF_X also apply */
00644 #define BPF_RVAL(code)  ((code) & 0x18)
00645 #define         BPF_A           0x10
00646 
00647 /* misc */
00648 #define BPF_MISCOP(code) ((code) & 0xf8)
00649 #define         BPF_TAX         0x00
00650 #define         BPF_TXA         0x80
00651 
00652 /*
00653  * The instruction data structure.
00654  */
00655 struct bpf_insn {
00656         u_short code;
00657         u_char  jt;
00658         u_char  jf;
00659         bpf_int32 k;
00660 };
00661 
00662 /*
00663  * Macros for insn array initializers.
00664  */
00665 #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
00666 #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
00667 
00668 #if __STDC__ || defined(__cplusplus)
00669 extern int bpf_validate(struct bpf_insn *, int);
00670 extern u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int);
00671 #else
00672 extern int bpf_validate();
00673 extern u_int bpf_filter();
00674 #endif
00675 
00676 /*
00677  * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST).
00678  */
00679 #define BPF_MEMWORDS 16
00680 
00681 #ifdef __cplusplus
00682 }
00683 #endif
00684 
00685 #endif

Generated on Sun May 14 14:51:20 2006 by  doxygen 1.4.2