| /*- |
| * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from the Stanford/CMU enet packet filter, |
| * (net/enet.c) distributed as part of 4.3BSD, and code contributed |
| * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence |
| * Berkeley Laboratory. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by the University of |
| * California, Berkeley and its contributors. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)bpf.h 7.1 (Berkeley) 5/7/91 |
| * |
| * @(#) $Header: /tcpdump/master/libpcap/pcap-bpf.h,v 1.9.2.9 2004-03-28 21:45:32 fenner Exp $ (LBL) |
| */ |
| |
| /* |
| * This is libpcap's cut-down version of bpf.h; it includes only |
| * the stuff needed for the code generator and the userland BPF |
| * interpreter, and the libpcap APIs for setting filters, etc.. |
| * |
| * "pcap-bpf.c" will include the native OS version, as it deals with |
| * the OS's BPF implementation. |
| * |
| * XXX - should this all just be moved to "pcap.h"? |
| */ |
| |
| #ifndef BPF_MAJOR_VERSION |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* BSD style release date */ |
| #define BPF_RELEASE 199606 |
| |
| typedef int bpf_int32; |
| typedef u_int bpf_u_int32; |
| |
| /* |
| * Alignment macros. BPF_WORDALIGN rounds up to the next |
| * even multiple of BPF_ALIGNMENT. |
| */ |
| #ifndef __NetBSD__ |
| #define BPF_ALIGNMENT sizeof(bpf_int32) |
| #else |
| #define BPF_ALIGNMENT sizeof(long) |
| #endif |
| #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) |
| |
| #define BPF_MAXINSNS 512 |
| #define BPF_MAXBUFSIZE 0x8000 |
| #define BPF_MINBUFSIZE 32 |
| |
| /* |
| * Structure for "pcap_compile()", "pcap_setfilter()", etc.. |
| */ |
| struct bpf_program { |
| u_int bf_len; |
| struct bpf_insn *bf_insns; |
| }; |
| |
| /* |
| * Struct return by BIOCVERSION. This represents the version number of |
| * the filter language described by the instruction encodings below. |
| * bpf understands a program iff kernel_major == filter_major && |
| * kernel_minor >= filter_minor, that is, if the value returned by the |
| * running kernel has the same major number and a minor number equal |
| * equal to or less than the filter being downloaded. Otherwise, the |
| * results are undefined, meaning an error may be returned or packets |
| * may be accepted haphazardly. |
| * It has nothing to do with the source code version. |
| */ |
| struct bpf_version { |
| u_short bv_major; |
| u_short bv_minor; |
| }; |
| /* Current version number of filter architecture. */ |
| #define BPF_MAJOR_VERSION 1 |
| #define BPF_MINOR_VERSION 1 |
| |
| /* |
| * Data-link level type codes. |
| * |
| * Do *NOT* add new values to this list without asking |
| * "tcpdump-workers@tcpdump.org" for a value. Otherwise, you run the |
| * risk of using a value that's already being used for some other purpose, |
| * and of having tools that read libpcap-format captures not being able |
| * to handle captures with your new DLT_ value, with no hope that they |
| * will ever be changed to do so (as that would destroy their ability |
| * to read captures using that value for that other purpose). |
| */ |
| |
| /* |
| * These are the types that are the same on all platforms, and that |
| * have been defined by <net/bpf.h> for ages. |
| */ |
| #define DLT_NULL 0 /* no link-layer encapsulation */ |
| #define DLT_EN10MB 1 /* Ethernet (10Mb) */ |
| #define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */ |
| #define DLT_AX25 3 /* Amateur Radio AX.25 */ |
| #define DLT_PRONET 4 /* Proteon ProNET Token Ring */ |
| #define DLT_CHAOS 5 /* Chaos */ |
| #define DLT_IEEE802 6 /* IEEE 802 Networks */ |
| #define DLT_ARCNET 7 /* ARCNET, with BSD-style header */ |
| #define DLT_SLIP 8 /* Serial Line IP */ |
| #define DLT_PPP 9 /* Point-to-point Protocol */ |
| #define DLT_FDDI 10 /* FDDI */ |
| |
| /* |
| * These are types that are different on some platforms, and that |
| * have been defined by <net/bpf.h> for ages. We use #ifdefs to |
| * detect the BSDs that define them differently from the traditional |
| * libpcap <net/bpf.h> |
| * |
| * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS, |
| * but I don't know what the right #define is for BSD/OS. |
| */ |
| #define DLT_ATM_RFC1483 11 /* LLC/SNAP encapsulated atm */ |
| |
| #ifdef __OpenBSD__ |
| #define DLT_RAW 14 /* raw IP */ |
| #else |
| #define DLT_RAW 12 /* raw IP */ |
| #endif |
| |
| /* |
| * Given that the only OS that currently generates BSD/OS SLIP or PPP |
| * is, well, BSD/OS, arguably everybody should have chosen its values |
| * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they |
| * didn't. So it goes. |
| */ |
| #if defined(__NetBSD__) || defined(__FreeBSD__) |
| #ifndef DLT_SLIP_BSDOS |
| #define DLT_SLIP_BSDOS 13 /* BSD/OS Serial Line IP */ |
| #define DLT_PPP_BSDOS 14 /* BSD/OS Point-to-point Protocol */ |
| #endif |
| #else |
| #define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */ |
| #define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */ |
| #endif |
| |
| /* |
| * 17 is used for DLT_OLD_PFLOG in OpenBSD; |
| * OBSOLETE: DLT_PFLOG is 117 in OpenBSD now as well. See below. |
| * 18 is used for DLT_PFSYNC in OpenBSD; don't use it for anything else. |
| */ |
| |
| #define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */ |
| |
| /* |
| * These values are defined by NetBSD; other platforms should refrain from |
| * using them for other purposes, so that NetBSD savefiles with link |
| * types of 50 or 51 can be read as this type on all platforms. |
| */ |
| #define DLT_PPP_SERIAL 50 /* PPP over serial with HDLC encapsulation */ |
| #define DLT_PPP_ETHER 51 /* PPP over Ethernet */ |
| |
| /* |
| * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses |
| * a link-layer type of 99 for the tcpdump it supplies. The link-layer |
| * header has 6 bytes of unknown data, something that appears to be an |
| * Ethernet type, and 36 bytes that appear to be 0 in at least one capture |
| * I've seen. |
| */ |
| #define DLT_SYMANTEC_FIREWALL 99 |
| |
| /* |
| * Values between 100 and 103 are used in capture file headers as |
| * link-layer types corresponding to DLT_ types that differ |
| * between platforms; don't use those values for new DLT_ new types. |
| */ |
| |
| /* |
| * This value was defined by libpcap 0.5; platforms that have defined |
| * it with a different value should define it here with that value - |
| * a link type of 104 in a save file will be mapped to DLT_C_HDLC, |
| * whatever value that happens to be, so programs will correctly |
| * handle files with that link type regardless of the value of |
| * DLT_C_HDLC. |
| * |
| * The name DLT_C_HDLC was used by BSD/OS; we use that name for source |
| * compatibility with programs written for BSD/OS. |
| * |
| * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well, |
| * for source compatibility with programs written for libpcap 0.5. |
| */ |
| #define DLT_C_HDLC 104 /* Cisco HDLC */ |
| #define DLT_CHDLC DLT_C_HDLC |
| |
| #define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */ |
| |
| /* |
| * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW, |
| * except when it isn't. (I.e., sometimes it's just raw IP, and |
| * sometimes it isn't.) We currently handle it as DLT_LINUX_SLL, |
| * so that we don't have to worry about the link-layer header.) |
| */ |
| |
| /* |
| * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides |
| * with other values. |
| * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header |
| * (DLCI, etc.). |
| */ |
| #define DLT_FRELAY 107 |
| |
| /* |
| * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except |
| * that the AF_ type in the link-layer header is in network byte order. |
| * |
| * OpenBSD defines it as 12, but that collides with DLT_RAW, so we |
| * define it as 108 here. If OpenBSD picks up this file, it should |
| * define DLT_LOOP as 12 in its version, as per the comment above - |
| * and should not use 108 as a DLT_ value. |
| */ |
| #define DLT_LOOP 108 |
| |
| /* |
| * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's |
| * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other |
| * than OpenBSD. |
| */ |
| #ifdef __OpenBSD__ |
| #define DLT_ENC 13 |
| #else |
| #define DLT_ENC 109 |
| #endif |
| |
| /* |
| * Values between 110 and 112 are reserved for use in capture file headers |
| * as link-layer types corresponding to DLT_ types that might differ |
| * between platforms; don't use those values for new DLT_ types |
| * other than the corresponding DLT_ types. |
| */ |
| |
| /* |
| * This is for Linux cooked sockets. |
| */ |
| #define DLT_LINUX_SLL 113 |
| |
| /* |
| * Apple LocalTalk hardware. |
| */ |
| #define DLT_LTALK 114 |
| |
| /* |
| * Acorn Econet. |
| */ |
| #define DLT_ECONET 115 |
| |
| /* |
| * Reserved for use with OpenBSD ipfilter. |
| */ |
| #define DLT_IPFILTER 116 |
| |
| /* |
| * OpenBSD DLT_PFLOG; DLT_PFLOG is 17 in OpenBSD, but that's DLT_LANE8023 |
| * in SuSE 6.3, so we can't use 17 for it in capture-file headers. |
| * |
| * XXX: is there a conflict with DLT_PFSYNC 18 as well? |
| */ |
| #ifdef __OpenBSD__ |
| #define DLT_OLD_PFLOG 17 |
| #define DLT_PFSYNC 18 |
| #endif |
| #define DLT_PFLOG 117 |
| |
| /* |
| * Registered for Cisco-internal use. |
| */ |
| #define DLT_CISCO_IOS 118 |
| |
| /* |
| * For 802.11 cards using the Prism II chips, with a link-layer |
| * header including Prism monitor mode information plus an 802.11 |
| * header. |
| */ |
| #define DLT_PRISM_HEADER 119 |
| |
| /* |
| * Reserved for Aironet 802.11 cards, with an Aironet link-layer header |
| * (see Doug Ambrisko's FreeBSD patches). |
| */ |
| #define DLT_AIRONET_HEADER 120 |
| |
| /* |
| * Reserved for Siemens HiPath HDLC. |
| */ |
| #define DLT_HHDLC 121 |
| |
| /* |
| * This is for RFC 2625 IP-over-Fibre Channel. |
| * |
| * This is not for use with raw Fibre Channel, where the link-layer |
| * header starts with a Fibre Channel frame header; it's for IP-over-FC, |
| * where the link-layer header starts with an RFC 2625 Network_Header |
| * field. |
| */ |
| #define DLT_IP_OVER_FC 122 |
| |
| /* |
| * This is for Full Frontal ATM on Solaris with SunATM, with a |
| * pseudo-header followed by an AALn PDU. |
| * |
| * There may be other forms of Full Frontal ATM on other OSes, |
| * with different pseudo-headers. |
| * |
| * If ATM software returns a pseudo-header with VPI/VCI information |
| * (and, ideally, packet type information, e.g. signalling, ILMI, |
| * LANE, LLC-multiplexed traffic, etc.), it should not use |
| * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump |
| * and the like don't have to infer the presence or absence of a |
| * pseudo-header and the form of the pseudo-header. |
| */ |
| #define DLT_SUNATM 123 /* Solaris+SunATM */ |
| |
| /* |
| * Reserved as per request from Kent Dahlgren <kent@praesum.com> |
| * for private use. |
| */ |
| #define DLT_RIO 124 /* RapidIO */ |
| #define DLT_PCI_EXP 125 /* PCI Express */ |
| #define DLT_AURORA 126 /* Xilinx Aurora link layer */ |
| |
| /* |
| * BSD header for 802.11 plus a number of bits of link-layer information |
| * including radio information. |
| */ |
| #define DLT_IEEE802_11_RADIO 127 /* 802.11 plus BSD radio header */ |
| |
| /* |
| * Reserved for the TZSP encapsulation, as per request from |
| * Chris Waters <chris.waters@networkchemistry.com> |
| * TZSP is a generic encapsulation for any other link type, |
| * which includes a means to include meta-information |
| * with the packet, e.g. signal strength and channel |
| * for 802.11 packets. |
| */ |
| #define DLT_TZSP 128 /* Tazmen Sniffer Protocol */ |
| |
| /* |
| * BSD's ARCNET headers have the source host, destination host, |
| * and type at the beginning of the packet; that's what's handed |
| * up to userland via BPF. |
| * |
| * Linux's ARCNET headers, however, have a 2-byte offset field |
| * between the host IDs and the type; that's what's handed up |
| * to userland via PF_PACKET sockets. |
| * |
| * We therefore have to have separate DLT_ values for them. |
| */ |
| #define DLT_ARCNET_LINUX 129 /* ARCNET */ |
| |
| /* |
| * Juniper-private data link types, as per request from |
| * Hannes Gredler <hannes@juniper.net>. The DLT_s are used |
| * for passing on chassis-internal metainformation such as |
| * QOS profiles, etc.. |
| */ |
| #define DLT_JUNIPER_MLPPP 130 |
| #define DLT_JUNIPER_MLFR 131 |
| #define DLT_JUNIPER_ES 132 |
| #define DLT_JUNIPER_GGSN 133 |
| #define DLT_JUNIPER_MFR 134 |
| #define DLT_JUNIPER_ATM2 135 |
| #define DLT_JUNIPER_SERVICES 136 |
| #define DLT_JUNIPER_ATM1 137 |
| |
| /* |
| * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund |
| * <dieter@apple.com>. The header that's presented is an Ethernet-like |
| * header: |
| * |
| * #define FIREWIRE_EUI64_LEN 8 |
| * struct firewire_header { |
| * u_char firewire_dhost[FIREWIRE_EUI64_LEN]; |
| * u_char firewire_shost[FIREWIRE_EUI64_LEN]; |
| * u_short firewire_type; |
| * }; |
| * |
| * with "firewire_type" being an Ethernet type value, rather than, |
| * for example, raw GASP frames being handed up. |
| */ |
| #define DLT_APPLE_IP_OVER_IEEE1394 138 |
| |
| /* |
| * 139 through 142 are reserved for SS7. |
| */ |
| |
| /* |
| * Reserved for DOCSIS MAC frames. |
| */ |
| #define DLT_DOCSIS 143 |
| |
| /* |
| * Linux-IrDA packets. Protocol defined at http://www.irda.org. |
| * Those packets include IrLAP headers and above (IrLMP...), but |
| * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy |
| * framing can be handled by the hardware and depend on the bitrate. |
| * This is exactly the format you would get capturing on a Linux-IrDA |
| * interface (irdaX), but not on a raw serial port. |
| * Note the capture is done in "Linux-cooked" mode, so each packet include |
| * a fake packet header (struct sll_header). This is because IrDA packet |
| * decoding is dependant on the direction of the packet (incomming or |
| * outgoing). |
| * When/if other platform implement IrDA capture, we may revisit the |
| * issue and define a real DLT_IRDA... |
| * Jean II |
| */ |
| #define DLT_LINUX_IRDA 144 |
| |
| /* |
| * Reserved for IBM SP switch and IBM Next Federation switch. |
| */ |
| #define DLT_IBM_SP 145 |
| #define DLT_IBM_SN 146 |
| |
| /* |
| * Reserved for private use. If you have some link-layer header type |
| * that you want to use within your organization, with the capture files |
| * using that link-layer header type not ever be sent outside your |
| * organization, you can use these values. |
| * |
| * No libpcap release will use these for any purpose, nor will any |
| * tcpdump release use them, either. |
| * |
| * Do *NOT* use these in capture files that you expect anybody not using |
| * your private versions of capture-file-reading tools to read; in |
| * particular, do *NOT* use them in products, otherwise you may find that |
| * people won't be able to use tcpdump, or snort, or Ethereal, or... to |
| * read capture files from your firewall/intrusion detection/traffic |
| * monitoring/etc. appliance, or whatever product uses that DLT_ value, |
| * and you may also find that the developers of those applications will |
| * not accept patches to let them read those files. |
| * |
| * Also, do not use them if somebody might send you a capture using them |
| * for *their* private type and tools using them for *your* private type |
| * would have to read them. |
| * |
| * Instead, ask "tcpdump-workers@tcpdump.org" for a new DLT_ value, |
| * as per the comment above, and use the type you're given. |
| */ |
| #define DLT_USER0 147 |
| #define DLT_USER1 148 |
| #define DLT_USER2 149 |
| #define DLT_USER3 150 |
| #define DLT_USER4 151 |
| #define DLT_USER5 152 |
| #define DLT_USER6 153 |
| #define DLT_USER7 154 |
| #define DLT_USER8 155 |
| #define DLT_USER9 156 |
| #define DLT_USER10 157 |
| #define DLT_USER11 158 |
| #define DLT_USER12 159 |
| #define DLT_USER13 160 |
| #define DLT_USER14 161 |
| #define DLT_USER15 162 |
| |
| /* |
| * For future use with 802.11 captures - defined by AbsoluteValue |
| * Systems to store a number of bits of link-layer information |
| * including radio information: |
| * |
| * http://www.shaftnet.org/~pizza/software/capturefrm.txt |
| * |
| * but could and arguably should also be used by non-AVS Linux |
| * 802.11 drivers; that may happen in the future. |
| */ |
| #define DLT_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */ |
| |
| /* |
| * Juniper-private data link type, as per request from |
| * Hannes Gredler <hannes@juniper.net>. The DLT_s are used |
| * for passing on chassis-internal metainformation such as |
| * QOS profiles, etc.. |
| */ |
| #define DLT_JUNIPER_MONITOR 164 |
| |
| /* |
| * The instruction encodings. |
| */ |
| /* instruction classes */ |
| #define BPF_CLASS(code) ((code) & 0x07) |
| #define BPF_LD 0x00 |
| #define BPF_LDX 0x01 |
| #define BPF_ST 0x02 |
| #define BPF_STX 0x03 |
| #define BPF_ALU 0x04 |
| #define BPF_JMP 0x05 |
| #define BPF_RET 0x06 |
| #define BPF_MISC 0x07 |
| |
| /* ld/ldx fields */ |
| #define BPF_SIZE(code) ((code) & 0x18) |
| #define BPF_W 0x00 |
| #define BPF_H 0x08 |
| #define BPF_B 0x10 |
| #define BPF_MODE(code) ((code) & 0xe0) |
| #define BPF_IMM 0x00 |
| #define BPF_ABS 0x20 |
| #define BPF_IND 0x40 |
| #define BPF_MEM 0x60 |
| #define BPF_LEN 0x80 |
| #define BPF_MSH 0xa0 |
| |
| /* alu/jmp fields */ |
| #define BPF_OP(code) ((code) & 0xf0) |
| #define BPF_ADD 0x00 |
| #define BPF_SUB 0x10 |
| #define BPF_MUL 0x20 |
| #define BPF_DIV 0x30 |
| #define BPF_OR 0x40 |
| #define BPF_AND 0x50 |
| #define BPF_LSH 0x60 |
| #define BPF_RSH 0x70 |
| #define BPF_NEG 0x80 |
| #define BPF_JA 0x00 |
| #define BPF_JEQ 0x10 |
| #define BPF_JGT 0x20 |
| #define BPF_JGE 0x30 |
| #define BPF_JSET 0x40 |
| #define BPF_SRC(code) ((code) & 0x08) |
| #define BPF_K 0x00 |
| #define BPF_X 0x08 |
| |
| /* ret - BPF_K and BPF_X also apply */ |
| #define BPF_RVAL(code) ((code) & 0x18) |
| #define BPF_A 0x10 |
| |
| /* misc */ |
| #define BPF_MISCOP(code) ((code) & 0xf8) |
| #define BPF_TAX 0x00 |
| #define BPF_TXA 0x80 |
| |
| /* |
| * The instruction data structure. |
| */ |
| struct bpf_insn { |
| u_short code; |
| u_char jt; |
| u_char jf; |
| bpf_int32 k; |
| }; |
| |
| /* |
| * Macros for insn array initializers. |
| */ |
| #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k } |
| #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k } |
| |
| #if __STDC__ || defined(__cplusplus) |
| extern int bpf_validate(struct bpf_insn *, int); |
| extern u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int); |
| #else |
| extern int bpf_validate(); |
| extern u_int bpf_filter(); |
| #endif |
| |
| /* |
| * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST). |
| */ |
| #define BPF_MEMWORDS 16 |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |