aboutsummaryrefslogtreecommitdiffstats
path: root/pcap-bpf.h
diff options
context:
space:
mode:
authorguy <guy>2003-02-11 01:46:05 +0000
committerguy <guy>2003-02-11 01:46:05 +0000
commitaedf01b20fa6470fe998a0998dc43f59f48fc0f4 (patch)
tree74c1d7f8a10022e23c12213f151b6359b6d70fd8 /pcap-bpf.h
parent52866495a0123c3ad7ada8a31555a57c9173f6ff (diff)
From Shaun <delius@progsoc.uts.edu.au>: on AIX, load the BPF driver and
create the BPF device nodes if necessary, and rename our "bpf.h" to "pcap-bpf.h" and install it in "/usr/include", so that "pcap-bpf.c" gets the system's bpf.h file if it includes <net/bpf.h> - on AIX, it needs to get an AIX-specific structure from that header in order to support loading the driver and creating the nodes. Update "packaging/pcap.spec".
Diffstat (limited to 'pcap-bpf.h')
-rw-r--r--pcap-bpf.h442
1 files changed, 442 insertions, 0 deletions
diff --git a/pcap-bpf.h b/pcap-bpf.h
new file mode 100644
index 0000000..f37f979
--- /dev/null
+++ b/pcap-bpf.h
@@ -0,0 +1,442 @@
+/*-
+ * 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 1.1 2003-02-11 01:46:06 guy Exp $ (LBL)
+ */
+
+/*
+ * This is libpcap's cut-down version of bpf.h; it includes only
+ * the stuff needed for the code generator and the userland BPF
+ * interpreter, and the libpcap APIs for setting filters, etc..
+ *
+ * "pcap-bpf.c" will include the native OS version, as it deals with
+ * the OS's BPF implementation.
+ *
+ * XXX - should this all just be moved to "pcap.h"?
+ */
+
+#ifndef BPF_MAJOR_VERSION
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* BSD style release date */
+#define BPF_RELEASE 199606
+
+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.
+ */
+
+/*
+ * These are the types that are the same on all platforms; on other
+ * platforms, a <net/bpf.h> should be supplied that defines the additional
+ * DLT_* codes appropriately for that platform (the BSDs, for example,
+ * should not just pick up this version of "bpf.h"; they should also define
+ * the additional DLT_* codes used by their kernels, as well as the values
+ * defined here - and, if the values they use for particular DLT_ types
+ * differ from those here, they should use their values, not the ones
+ * here).
+ */
+#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 values from the traditional libpcap "bpf.h".
+ * Ports of this to particular platforms should replace these definitions
+ * with the ones appropriate to that platform, if the values are
+ * different on that platform.
+ */
+#define DLT_ATM_RFC1483 11 /* LLC/SNAP encapsulated atm */
+#define DLT_RAW 12 /* raw IP */
+
+/*
+ * These are values from BSD/OS's "bpf.h".
+ * These are not the same as the values from the traditional libpcap
+ * "bpf.h"; however, these values shouldn't be generated by any
+ * OS other than BSD/OS, so the correct values to use here are the
+ * BSD/OS values.
+ *
+ * Platforms that have already assigned these values to other
+ * DLT_ codes, however, should give these codes the values
+ * from that platform, so that programs that use these codes will
+ * continue to compile - even though they won't correctly read
+ * files of these types.
+ */
+#ifdef __NetBSD__
+#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
+
+#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 */
+
+/*
+ * 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
+
+/*
+ * Values between 109 and 112 are used 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
+
+/*
+ * Reserved for use in capture-file headers as a link-layer type
+ * corresponding to 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.
+ */
+#define DLT_PFLOG 117
+
+/*
+ * Registered for Cisco-internal use.
+ */
+#define DLT_CISCO_IOS 118
+
+/*
+ * Reserved 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 */
+
+/*
+ * For future use with 802.11 captures - defined by AbsoluteValue
+ * Systems to store a number of bits of link-layer information:
+ *
+ * http://www.shaftnet.org/~pizza/software/capturefrm.txt
+ *
+ * but could and arguably should also be used by non-AVS Linux
+ * 802.11 drivers and BSD drivers; that may happen in the future.
+ */
+#define DLT_IEEE802_11_RADIO 127 /* 802.11 plus WLAN 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 */
+
+/*
+ * 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