/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2018 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1990, 1991, 1993
*
* $FreeBSD: src/sys/net/bpf.h,v 1.21.2.3 2001/08/01 00:23:13 fenner Exp $
*/
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce
+ * support for mandatory and extensible security protections. This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
#ifndef _NET_BPF_H_
#define _NET_BPF_H_
+#include <sys/param.h>
#include <sys/appleapiopts.h>
#include <sys/types.h>
#include <sys/time.h>
+#include <sys/cdefs.h>
+#include <stdint.h>
+
+#ifdef PRIVATE
+#include <net/if_var.h>
+#include <uuid/uuid.h>
+
+struct bpf_setup_args {
+ uuid_t bsa_uuid;
+ char bsa_ifname[IFNAMSIZ];
+};
+#endif /* PRIVATE */
+
+#ifdef KERNEL
+#include <sys/kernel_types.h>
+
+#if !defined(__i386__) && !defined(__x86_64__)
+#define BPF_ALIGN 1
+#else /* defined(__i386__) || defined(__x86_64__) */
+#define BPF_ALIGN 0
+#endif /* defined(__i386__) || defined(__x86_64__) */
+
+#if !BPF_ALIGN
+#define EXTRACT_SHORT(p) ((u_int16_t)ntohs(*(u_int16_t *)(void *)p))
+#define EXTRACT_LONG(p) (ntohl(*(u_int32_t *)(void *)p))
+#else
+#define EXTRACT_SHORT(p)\
+ ((u_int16_t)\
+ ((u_int16_t)*((u_char *)p+0)<<8|\
+ (u_int16_t)*((u_char *)p+1)<<0))
+#define EXTRACT_LONG(p)\
+ ((u_int32_t)*((u_char *)p+0)<<24|\
+ (u_int32_t)*((u_char *)p+1)<<16|\
+ (u_int32_t)*((u_char *)p+2)<<8|\
+ (u_int32_t)*((u_char *)p+3)<<0)
+#endif
+
+#endif /* KERNEL */
/* BSD style release date */
#define BPF_RELEASE 199606
* Alignment macros. BPF_WORDALIGN rounds up to the next
* even multiple of BPF_ALIGNMENT.
*/
-#define BPF_ALIGNMENT sizeof(long)
+#define BPF_ALIGNMENT sizeof(int32_t)
#define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1))
#define BPF_MAXINSNS 512
-#define BPF_MAXBUFSIZE 0x8000
+#define BPF_MAXBUFSIZE 0x80000
#define BPF_MINBUFSIZE 32
/*
struct bpf_insn *bf_insns;
};
+#ifdef KERNEL_PRIVATE
+/*
+ * LP64 version of bpf_program. all pointers
+ * grow when we're dealing with a 64-bit process.
+ * WARNING - keep in sync with bpf_program
+ */
+struct bpf_program64 {
+ u_int bf_len;
+ user64_addr_t bf_insns __attribute__((aligned(8)));
+};
+
+struct bpf_program32 {
+ u_int bf_len;
+ user32_addr_t bf_insns;
+};
+#endif /* KERNEL_PRIVATE */
+
/*
* Struct returned by BIOCGSTATS.
*/
u_short bv_major;
u_short bv_minor;
};
+#if defined(__LP64__)
+#include <sys/_types/_timeval32.h>
+
+#define BPF_TIMEVAL timeval32
+#else
+#define BPF_TIMEVAL timeval
+#endif /* __LP64__ */
/* Current version number of filter architecture. */
#define BPF_MAJOR_VERSION 1
#define BPF_MINOR_VERSION 1
#define BIOCGBLEN _IOR('B',102, u_int)
#define BIOCSBLEN _IOWR('B',102, u_int)
#define BIOCSETF _IOW('B',103, struct bpf_program)
+#ifdef KERNEL_PRIVATE
+#define BIOCSETF64 _IOW('B',103, struct bpf_program64)
+#define BIOCSETF32 _IOW('B',103, struct bpf_program32)
+#endif /* KERNEL_PRIVATE */
#define BIOCFLUSH _IO('B',104)
#define BIOCPROMISC _IO('B',105)
#define BIOCGDLT _IOR('B',106, u_int)
#define BIOCGETIF _IOR('B',107, struct ifreq)
#define BIOCSETIF _IOW('B',108, struct ifreq)
#define BIOCSRTIMEOUT _IOW('B',109, struct timeval)
+#ifdef KERNEL_PRIVATE
+#define BIOCSRTIMEOUT64 _IOW('B',109, struct user64_timeval)
+#define BIOCSRTIMEOUT32 _IOW('B',109, struct user32_timeval)
+#endif /* KERNEL_PRIVATE */
#define BIOCGRTIMEOUT _IOR('B',110, struct timeval)
+#ifdef KERNEL_PRIVATE
+#define BIOCGRTIMEOUT64 _IOR('B',110, struct user64_timeval)
+#define BIOCGRTIMEOUT32 _IOR('B',110, struct user32_timeval)
+#endif /* KERNEL_PRIVATE */
#define BIOCGSTATS _IOR('B',111, struct bpf_stat)
#define BIOCIMMEDIATE _IOW('B',112, u_int)
#define BIOCVERSION _IOR('B',113, struct bpf_version)
#define BIOCSHDRCMPLT _IOW('B',117, u_int)
#define BIOCGSEESENT _IOR('B',118, u_int)
#define BIOCSSEESENT _IOW('B',119, u_int)
-
+#define BIOCSDLT _IOW('B',120, u_int)
+#define BIOCGDLTLIST _IOWR('B',121, struct bpf_dltlist)
+#ifdef PRIVATE
+#define BIOCGETTC _IOR('B', 122, int)
+#define BIOCSETTC _IOW('B', 123, int)
+#define BIOCSEXTHDR _IOW('B', 124, u_int)
+#define BIOCGIFATTACHCOUNT _IOWR('B', 125, struct ifreq)
+#endif /* PRIVATE */
+#define BIOCSETFNR _IOW('B', 126, struct bpf_program)
+#ifdef KERNEL_PRIVATE
+#define BIOCSETFNR64 _IOW('B',126, struct bpf_program64)
+#define BIOCSETFNR32 _IOW('B',126, struct bpf_program32)
+#endif /* KERNEL_PRIVATE */
+#ifdef PRIVATE
+#define BIOCGWANTPKTAP _IOR('B', 127, u_int)
+#define BIOCSWANTPKTAP _IOWR('B', 127, u_int)
+#define BIOCSHEADDROP _IOW('B', 128, int)
+#define BIOCGHEADDROP _IOR('B', 128, int)
+#define BIOCSTRUNCATE _IOW('B', 129, u_int)
+#define BIOCGETUUID _IOR('B', 130, uuid_t)
+#define BIOCSETUP _IOW('B', 131, struct bpf_setup_args)
+#define BIOCSPKTHDRV2 _IOW('B', 132, int)
+#define BIOCGPKTHDRV2 _IOW('B', 133, int)
+#endif /* PRIVATE */
/*
* Structure prepended to each packet.
*/
struct bpf_hdr {
- struct timeval bh_tstamp; /* time stamp */
+ struct BPF_TIMEVAL bh_tstamp; /* time stamp */
bpf_u_int32 bh_caplen; /* length of captured portion */
bpf_u_int32 bh_datalen; /* original length of packet */
u_short bh_hdrlen; /* length of bpf header (this struct
plus alignment padding) */
};
+#ifdef KERNEL
/*
* Because the structure above is not a multiple of 4 bytes, some compilers
* will insist on inserting padding; hence, sizeof(struct bpf_hdr) won't work.
* Only the kernel needs to know about it; applications use bh_hdrlen.
*/
-#ifdef KERNEL
#define SIZEOF_BPF_HDR (sizeof(struct bpf_hdr) <= 20 ? 18 : \
sizeof(struct bpf_hdr))
#endif
+#ifdef PRIVATE
+/*
+ * This structure must be a multiple of 4 bytes.
+ * It includes padding and spare fields that we can use later if desired.
+ */
+struct bpf_hdr_ext {
+ struct BPF_TIMEVAL bh_tstamp; /* time stamp */
+ bpf_u_int32 bh_caplen; /* length of captured portion */
+ bpf_u_int32 bh_datalen; /* original length of packet */
+ u_short bh_hdrlen; /* length of bpf header */
+ u_short bh_flags;
+#define BPF_HDR_EXT_FLAGS_DIR_IN 0x0000
+#define BPF_HDR_EXT_FLAGS_DIR_OUT 0x0001
+ pid_t bh_pid; /* process PID */
+ char bh_comm[MAXCOMLEN+1]; /* process command */
+ u_char _bh_pad2[1];
+ u_char bh_pktflags;
+#define BPF_PKTFLAGS_TCP_REXMT 0x0001
+#define BPF_PKTFLAGS_START_SEQ 0x0002
+#define BPF_PKTFLAGS_LAST_PKT 0x0004
+ u_char bh_proto; /* kernel reserved; 0 in userland */
+ bpf_u_int32 bh_svc; /* service class */
+ bpf_u_int32 bh_flowid; /* kernel reserved; 0 in userland */
+ bpf_u_int32 bh_unsent_bytes; /* unsent bytes at interface */
+ bpf_u_int32 bh_unsent_snd; /* unsent bytes at socket buffer */
+};
+
+#define BPF_CONTROL_NAME "com.apple.net.bpf"
+
+struct bpf_mtag {
+ char bt_comm[MAXCOMLEN];
+ pid_t bt_pid;
+ bpf_u_int32 bt_svc;
+ unsigned char bt_direction;
+#define BPF_MTAG_DIR_IN 0
+#define BPF_MTAG_DIR_OUT 1
+};
+
+#endif /* PRIVATE */
/*
* Data-link level type codes.
#define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */
#define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */
+/*
+ * 17 was used for DLT_PFLOG in OpenBSD; it no longer is.
+ *
+ * It was DLT_LANE8023 in SuSE 6.3, so we defined LINKTYPE_PFLOG
+ * as 117 so that pflog captures would use a link-layer header type
+ * value that didn't collide with any other values. On all
+ * platforms other than OpenBSD, we defined DLT_PFLOG as 117,
+ * and we mapped between LINKTYPE_PFLOG and DLT_PFLOG.
+ *
+ * OpenBSD eventually switched to using 117 for DLT_PFLOG as well.
+ *
+ * Don't use 17 for anything else.
+ */
+
+/*
+ * 18 is used for DLT_PFSYNC in OpenBSD, NetBSD, DragonFly BSD and
+ * Mac OS X; don't use it for anything else. (FreeBSD uses 121,
+ * which collides with DLT_HHDLC, even though it doesn't use 18
+ * for anything and doesn't appear to have ever used it for anything.)
+ *
+ * We define it as 18 on those platforms; it is, unfortunately, used
+ * for DLT_CIP in Suse 6.3, so we don't define it as DLT_PFSYNC
+ * in general. As the packet format for it, like that for
+ * DLT_PFLOG, is not only OS-dependent but OS-version-dependent,
+ * we don't support printing it in tcpdump except on OSes that
+ * have the relevant header files, so it's not that useful on
+ * other platforms.
+ */
+#define DLT_PFSYNC 18 /* Packet filter state syncing */
+
#define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */
/*
- * This value is defined by NetBSD; other platforms should refrain from
- * using it for other purposes, so that NetBSD savefiles with a link
- * type of 50 can be read as this type on all platforms.
+ * 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 header type LINKTYPE_ values corresponding to DLT_ types
+ * that differ between platforms; don't use those values for new DLT_
+ * new types.
+ */
+
+/*
+ * Values starting with 104 are used for newly-assigned link-layer
+ * header type values; for those link-layer header types, the DLT_
+ * value returned by pcap_datalink() and passed to pcap_open_dead(),
+ * and the LINKTYPE_ value that appears in capture files, are the
+ * same.
+ *
+ * DLT_MATCHING_MIN is the lowest such value; DLT_MATCHING_MAX is
+ * the highest such value.
+ */
+#define DLT_MATCHING_MIN 104
/*
* This value was defined by libpcap 0.5; platforms that have defined
#define DLT_C_HDLC 104 /* Cisco HDLC */
#define DLT_CHDLC DLT_C_HDLC
-/*
- * Reserved for future use.
- * Do not pick other numerical value for these unless you have also
- * picked up the tcpdump.org top-of-CVS-tree version of "savefile.c",
- * which will arrange that capture files for these DLT_ types have
- * the same "network" value on all platforms, regardless of what
- * value is chosen for their DLT_ type (thus allowing captures made
- * on one platform to be read on other platforms, even if the two
- * platforms don't use the same numerical values for all DLT_ types).
- */
#define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */
/*
* between platforms; don't use those values for new DLT_ new types.
*/
+/*
+ * 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.
* between platforms; don't use those values for new DLT_ new types.
*/
+/*
+ * 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.
+ */
+#define DLT_ENC 109
+
/*
* 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
+
+/*
+ * For use in capture-file headers as a link-layer type corresponding
+ * to OpenBSD PF (Packet Filter) log.
+ */
+#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. XXX
+ */
+#define DLT_HHDLC 121
+
+/*
+ * Reserved for RFC 2625 IP-over-Fibre Channel.
+ */
+#define DLT_IP_OVER_FC 122
+
+/*
+ * Reserved for Full Frontal ATM on Solaris.
+ */
+#define DLT_SUNATM 123
+
+/*
+ * 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.
+ */
+#ifndef DLT_IEEE802_11_RADIO
+#define DLT_IEEE802_11_RADIO 127
+#endif
+
+/*
+ * Reserved for TZSP encapsulation.
+ */
+#define DLT_TZSP 128 /* Tazmen Sniffer Protocol */
+
+/*
+ * Reserved for Linux ARCNET.
+ */
+#define DLT_ARCNET_LINUX 129
+
+/*
+ * Juniper-private data link types.
+ */
+#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
+
+/*
+ * Various SS7 encapsulations, as per a request from Jeff Morriss
+ * <jeff.morriss[AT]ulticom.com> and subsequent discussions.
+ */
+#define DLT_MTP2_WITH_PHDR 139 /* pseudo-header with various info, followed by MTP2 */
+#define DLT_MTP2 140 /* MTP2, without pseudo-header */
+#define DLT_MTP3 141 /* MTP3, without pseudo-header or MTP2 */
+#define DLT_SCCP 142 /* SCCP, without pseudo-header or MTP2 or MTP3 */
+
+/*
+ * Reserved for DOCSIS.
+ */
+#define DLT_DOCSIS 143
+
+/*
+ * Reserved for Linux IrDA.
+ */
+#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
+
+#ifdef PRIVATE
+/*
+ * For Apple private usage
+ */
+#define DLT_USER0_APPLE_INTERNAL DLT_USER0 /* rdar://12019509 */
+#define DLT_USER1_APPLE_INTERNAL DLT_USER1 /* rdar://12019509 */
+#define DLT_PKTAP DLT_USER2 /* rdar://11779467 */
+#define DLT_USER3_APPLE_INTERNAL DLT_USER3 /* rdar://19614531 */
+#define DLT_USER4_APPLE_INTERNAL DLT_USER4 /* rdar://19614531 */
+#endif /* PRIVATE */
+
+/*
+ * 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 it might be used by some non-AVS drivers now or 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
+
+/*
+ * Reserved for BACnet MS/TP.
+ */
+#define DLT_BACNET_MS_TP 165
+
+/*
+ * Another PPP variant as per request from Karsten Keil <kkeil@suse.de>.
+ *
+ * This is used in some OSes to allow a kernel socket filter to distinguish
+ * between incoming and outgoing packets, on a socket intended to
+ * supply pppd with outgoing packets so it can do dial-on-demand and
+ * hangup-on-lack-of-demand; incoming packets are filtered out so they
+ * don't cause pppd to hold the connection up (you don't want random
+ * input packets such as port scans, packets from old lost connections,
+ * etc. to force the connection to stay up).
+ *
+ * The first byte of the PPP header (0xff03) is modified to accomodate
+ * the direction - 0x00 = IN, 0x01 = OUT.
+ */
+#define DLT_PPP_PPPD 166
+
+/*
+ * Names for backwards compatibility with older versions of some PPP
+ * software; new software should use DLT_PPP_PPPD.
+ */
+#define DLT_PPP_WITH_DIRECTION DLT_PPP_PPPD
+#define DLT_LINUX_PPP_WITHDIRECTION DLT_PPP_PPPD
+
+/*
+ * 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, cookies, etc..
+ */
+#define DLT_JUNIPER_PPPOE 167
+#define DLT_JUNIPER_PPPOE_ATM 168
+
+#define DLT_GPRS_LLC 169 /* GPRS LLC */
+#define DLT_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */
+#define DLT_GPF_F 171 /* GPF-F (ITU-T G.7041/Y.1303) */
+
+/*
+ * Requested by Oolan Zimmer <oz@gcom.com> for use in Gcom's T1/E1 line
+ * monitoring equipment.
+ */
+#define DLT_GCOM_T1E1 172
+#define DLT_GCOM_SERIAL 173
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>. The DLT_ is used
+ * for internal communication to Physical Interface Cards (PIC)
+ */
+#define DLT_JUNIPER_PIC_PEER 174
+
+/*
+ * Link types requested by Gregor Maier <gregor@endace.com> of Endace
+ * Measurement Systems. They add an ERF header (see
+ * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of
+ * the link-layer header.
+ */
+#define DLT_ERF_ETH 175 /* Ethernet */
+#define DLT_ERF_POS 176 /* Packet-over-SONET */
+
+/*
+ * Requested by Daniele Orlandi <daniele@orlandi.com> for raw LAPD
+ * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header
+ * includes additional information before the LAPD header, so it's
+ * not necessarily a generic LAPD header.
+ */
+#define DLT_LINUX_LAPD 177
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>.
+ * The DLT_ are used for prepending meta-information
+ * like interface index, interface name
+ * before standard Ethernet, PPP, Frelay & C-HDLC Frames
+ */
+#define DLT_JUNIPER_ETHER 178
+#define DLT_JUNIPER_PPP 179
+#define DLT_JUNIPER_FRELAY 180
+#define DLT_JUNIPER_CHDLC 181
+
+/*
+ * Multi Link Frame Relay (FRF.16)
+ */
+#define DLT_MFR 182
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>.
+ * The DLT_ is used for internal communication with a
+ * voice Adapter Card (PIC)
+ */
+#define DLT_JUNIPER_VP 183
+
+/*
+ * Arinc 429 frames.
+ * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
+ * Every frame contains a 32bit A429 label.
+ * More documentation on Arinc 429 can be found at
+ * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf
+ */
+#define DLT_A429 184
+
+/*
+ * Arinc 653 Interpartition Communication messages.
+ * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
+ * Please refer to the A653-1 standard for more information.
+ */
+#define DLT_A653_ICM 185
+
+/*
+ * USB packets, beginning with a USB setup header; requested by
+ * Paolo Abeni <paolo.abeni@email.it>.
+ */
+#define DLT_USB 186
+
+/*
+ * Bluetooth HCI UART transport layer (part H:4); requested by
+ * Paolo Abeni.
+ */
+#define DLT_BLUETOOTH_HCI_H4 187
+
+/*
+ * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz
+ * <cruz_petagay@bah.com>.
+ */
+#define DLT_IEEE802_16_MAC_CPS 188
+
+/*
+ * USB packets, beginning with a Linux USB header; requested by
+ * Paolo Abeni <paolo.abeni@email.it>.
+ */
+#define DLT_USB_LINUX 189
+
+/*
+ * Controller Area Network (CAN) v. 2.0B packets.
+ * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
+ * Used to dump CAN packets coming from a CAN Vector board.
+ * More documentation on the CAN v2.0B frames can be found at
+ * http://www.can-cia.org/downloads/?269
+ */
+#define DLT_CAN20B 190
+
+/*
+ * IEEE 802.15.4, with address fields padded, as is done by Linux
+ * drivers; requested by Juergen Schimmer.
+ */
+#define DLT_IEEE802_15_4_LINUX 191
+
+/*
+ * Per Packet Information encapsulated packets.
+ * DLT_ requested by Gianluca Varenni <gianluca.varenni@cacetech.com>.
+ */
+#define DLT_PPI 192
+
+/*
+ * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header;
+ * requested by Charles Clancy.
+ */
+#define DLT_IEEE802_16_MAC_CPS_RADIO 193
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>.
+ * The DLT_ is used for internal communication with a
+ * integrated service module (ISM).
+ */
+#define DLT_JUNIPER_ISM 194
+
+/*
+ * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
+ * nothing); requested by Mikko Saarnivala <mikko.saarnivala@sensinode.com>.
+ */
+#define DLT_IEEE802_15_4 195
+
+/*
+ * Various link-layer types, with a pseudo-header, for SITA
+ * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com).
+ */
+#define DLT_SITA 196
+
+/*
+ * Various link-layer types, with a pseudo-header, for Endace DAG cards;
+ * encapsulates Endace ERF records. Requested by Stephen Donnelly
+ * <stephen@endace.com>.
+ */
+#define DLT_ERF 197
+
+/*
+ * Special header prepended to Ethernet packets when capturing from a
+ * u10 Networks board. Requested by Phil Mulholland
+ * <phil@u10networks.com>.
+ */
+#define DLT_RAIF1 198
+
+/*
+ * IPMB packet for IPMI, beginning with the I2C slave address, followed
+ * by the netFn and LUN, etc.. Requested by Chanthy Toeung
+ * <chanthy.toeung@ca.kontron.com>.
+ */
+#define DLT_IPMB 199
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>.
+ * The DLT_ is used for capturing data on a secure tunnel interface.
+ */
+#define DLT_JUNIPER_ST 200
+
+/*
+ * Bluetooth HCI UART transport layer (part H:4), with pseudo-header
+ * that includes direction information; requested by Paolo Abeni.
+ */
+#define DLT_BLUETOOTH_HCI_H4_WITH_PHDR 201
+
+/*
+ * AX.25 packet with a 1-byte KISS header; see
+ *
+ * http://www.ax25.net/kiss.htm
+ *
+ * as per Richard Stearn <richard@rns-stearn.demon.co.uk>.
+ */
+#define DLT_AX25_KISS 202
+
+/*
+ * LAPD packets from an ISDN channel, starting with the address field,
+ * with no pseudo-header.
+ * Requested by Varuna De Silva <varunax@gmail.com>.
+ */
+#define DLT_LAPD 203
+
+/*
+ * Variants of various link-layer headers, with a one-byte direction
+ * pseudo-header prepended - zero means "received by this host",
+ * non-zero (any non-zero value) means "sent by this host" - as per
+ * Will Barker <w.barker@zen.co.uk>.
+ */
+#define DLT_PPP_WITH_DIR 204 /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */
+#define DLT_C_HDLC_WITH_DIR 205 /* Cisco HDLC */
+#define DLT_FRELAY_WITH_DIR 206 /* Frame Relay */
+#define DLT_LAPB_WITH_DIR 207 /* LAPB */
+
+/*
+ * 208 is reserved for an as-yet-unspecified proprietary link-layer
+ * type, as requested by Will Barker.
+ */
+
+/*
+ * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman
+ * <avn@pigeonpoint.com>.
+ */
+#define DLT_IPMB_LINUX 209
+
+/*
+ * FlexRay automotive bus - http://www.flexray.com/ - as requested
+ * by Hannes Kaelber <hannes.kaelber@x2e.de>.
+ */
+#define DLT_FLEXRAY 210
+
+/*
+ * Media Oriented Systems Transport (MOST) bus for multimedia
+ * transport - http://www.mostcooperation.com/ - as requested
+ * by Hannes Kaelber <hannes.kaelber@x2e.de>.
+ */
+#define DLT_MOST 211
+
+/*
+ * Local Interconnect Network (LIN) bus for vehicle networks -
+ * http://www.lin-subbus.org/ - as requested by Hannes Kaelber
+ * <hannes.kaelber@x2e.de>.
+ */
+#define DLT_LIN 212
+
+/*
+ * X2E-private data link type used for serial line capture,
+ * as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
+ */
+#define DLT_X2E_SERIAL 213
+
+/*
+ * X2E-private data link type used for the Xoraya data logger
+ * family, as requested by Hannes Kaelber <hannes.kaelber@x2e.de>.
+ */
+#define DLT_X2E_XORAYA 214
+
+/*
+ * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
+ * nothing), but with the PHY-level data for non-ASK PHYs (4 octets
+ * of 0 as preamble, one octet of SFD, one octet of frame length+
+ * reserved bit, and then the MAC-layer data, starting with the
+ * frame control field).
+ *
+ * Requested by Max Filippov <jcmvbkbc@gmail.com>.
+ */
+#define DLT_IEEE802_15_4_NONASK_PHY 215
+
+/*
+ * David Gibson <david@gibson.dropbear.id.au> requested this for
+ * captures from the Linux kernel /dev/input/eventN devices. This
+ * is used to communicate keystrokes and mouse movements from the
+ * Linux kernel to display systems, such as Xorg.
+ */
+#define DLT_LINUX_EVDEV 216
+
+/*
+ * GSM Um and Abis interfaces, preceded by a "gsmtap" header.
+ *
+ * Requested by Harald Welte <laforge@gnumonks.org>.
+ */
+#define DLT_GSMTAP_UM 217
+#define DLT_GSMTAP_ABIS 218
+
+/*
+ * MPLS, with an MPLS label as the link-layer header.
+ * Requested by Michele Marchetto <michele@openbsd.org> on behalf
+ * of OpenBSD.
+ */
+#define DLT_MPLS 219
+
+/*
+ * USB packets, beginning with a Linux USB header, with the USB header
+ * padded to 64 bytes; required for memory-mapped access.
+ */
+#define DLT_USB_LINUX_MMAPPED 220
+
+/*
+ * DECT packets, with a pseudo-header; requested by
+ * Matthias Wenzel <tcpdump@mazzoo.de>.
+ */
+#define DLT_DECT 221
+
+/*
+ * From: "Lidwa, Eric (GSFC-582.0)[SGT INC]" <eric.lidwa-1@nasa.gov>
+ * Date: Mon, 11 May 2009 11:18:30 -0500
+ *
+ * DLT_AOS. We need it for AOS Space Data Link Protocol.
+ * I have already written dissectors for but need an OK from
+ * legal before I can submit a patch.
+ *
+ */
+#define DLT_AOS 222
+
+/*
+ * Wireless HART (Highway Addressable Remote Transducer)
+ * From the HART Communication Foundation
+ * IES/PAS 62591
+ *
+ * Requested by Sam Roberts <vieuxtech@gmail.com>.
+ */
+#define DLT_WIHART 223
+
+/*
+ * Fibre Channel FC-2 frames, beginning with a Frame_Header.
+ * Requested by Kahou Lei <kahou82@gmail.com>.
+ */
+#define DLT_FC_2 224
+
+/*
+ * Fibre Channel FC-2 frames, beginning with an encoding of the
+ * SOF, and ending with an encoding of the EOF.
+ *
+ * The encodings represent the frame delimiters as 4-byte sequences
+ * representing the corresponding ordered sets, with K28.5
+ * represented as 0xBC, and the D symbols as the corresponding
+ * byte values; for example, SOFi2, which is K28.5 - D21.5 - D1.2 - D21.2,
+ * is represented as 0xBC 0xB5 0x55 0x55.
+ *
+ * Requested by Kahou Lei <kahou82@gmail.com>.
+ */
+#define DLT_FC_2_WITH_FRAME_DELIMS 225
+
+/*
+ * Solaris ipnet pseudo-header; requested by Darren Reed <Darren.Reed@Sun.COM>.
+ *
+ * The pseudo-header starts with a one-byte version number; for version 2,
+ * the pseudo-header is:
+ *
+ * struct dl_ipnetinfo {
+ * u_int8_t dli_version;
+ * u_int8_t dli_family;
+ * u_int16_t dli_htype;
+ * u_int32_t dli_pktlen;
+ * u_int32_t dli_ifindex;
+ * u_int32_t dli_grifindex;
+ * u_int32_t dli_zsrc;
+ * u_int32_t dli_zdst;
+ * };
+ *
+ * dli_version is 2 for the current version of the pseudo-header.
+ *
+ * dli_family is a Solaris address family value, so it's 2 for IPv4
+ * and 26 for IPv6.
+ *
+ * dli_htype is a "hook type" - 0 for incoming packets, 1 for outgoing
+ * packets, and 2 for packets arriving from another zone on the same
+ * machine.
+ *
+ * dli_pktlen is the length of the packet data following the pseudo-header
+ * (so the captured length minus dli_pktlen is the length of the
+ * pseudo-header, assuming the entire pseudo-header was captured).
+ *
+ * dli_ifindex is the interface index of the interface on which the
+ * packet arrived.
+ *
+ * dli_grifindex is the group interface index number (for IPMP interfaces).
+ *
+ * dli_zsrc is the zone identifier for the source of the packet.
+ *
+ * dli_zdst is the zone identifier for the destination of the packet.
+ *
+ * A zone number of 0 is the global zone; a zone number of 0xffffffff
+ * means that the packet arrived from another host on the network, not
+ * from another zone on the same machine.
+ *
+ * An IPv4 or IPv6 datagram follows the pseudo-header; dli_family indicates
+ * which of those it is.
+ */
+#define DLT_IPNET 226
+
+/*
+ * CAN (Controller Area Network) frames, with a pseudo-header as supplied
+ * by Linux SocketCAN. See Documentation/networking/can.txt in the Linux
+ * source.
+ *
+ * Requested by Felix Obenhuber <felix@obenhuber.de>.
+ */
+#define DLT_CAN_SOCKETCAN 227
+
+/*
+ * Raw IPv4/IPv6; different from DLT_RAW in that the DLT_ value specifies
+ * whether it's v4 or v6. Requested by Darren Reed <Darren.Reed@Sun.COM>.
+ */
+#define DLT_IPV4 228
+#define DLT_IPV6 229
+
+/*
+ * IEEE 802.15.4, exactly as it appears in the spec (no padding, no
+ * nothing), and with no FCS at the end of the frame; requested by
+ * Jon Smirl <jonsmirl@gmail.com>.
+ */
+#define DLT_IEEE802_15_4_NOFCS 230
+
+/*
+ * Raw D-Bus:
+ *
+ * http://www.freedesktop.org/wiki/Software/dbus
+ *
+ * messages:
+ *
+ * http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-messages
+ *
+ * starting with the endianness flag, followed by the message type, etc.,
+ * but without the authentication handshake before the message sequence:
+ *
+ * http://dbus.freedesktop.org/doc/dbus-specification.html#auth-protocol
+ *
+ * Requested by Martin Vidner <martin@vidner.net>.
+ */
+#define DLT_DBUS 231
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>.
+ */
+#define DLT_JUNIPER_VS 232
+#define DLT_JUNIPER_SRX_E2E 233
+#define DLT_JUNIPER_FIBRECHANNEL 234
+
+/*
+ * DVB-CI (DVB Common Interface for communication between a PC Card
+ * module and a DVB receiver). See
+ *
+ * http://www.kaiser.cx/pcap-dvbci.html
+ *
+ * for the specification.
+ *
+ * Requested by Martin Kaiser <martin@kaiser.cx>.
+ */
+#define DLT_DVB_CI 235
+
+/*
+ * Variant of 3GPP TS 27.010 multiplexing protocol (similar to, but
+ * *not* the same as, 27.010). Requested by Hans-Christoph Schemmel
+ * <hans-christoph.schemmel@cinterion.com>.
+ */
+#define DLT_MUX27010 236
+
+/*
+ * STANAG 5066 D_PDUs. Requested by M. Baris Demiray
+ * <barisdemiray@gmail.com>.
+ */
+#define DLT_STANAG_5066_D_PDU 237
+
+/*
+ * Juniper-private data link type, as per request from
+ * Hannes Gredler <hannes@juniper.net>.
+ */
+#define DLT_JUNIPER_ATM_CEMIC 238
+
+/*
+ * NetFilter LOG messages
+ * (payload of netlink NFNL_SUBSYS_ULOG/NFULNL_MSG_PACKET packets)
+ *
+ * Requested by Jakub Zawadzki <darkjames-ws@darkjames.pl>
+ */
+#define DLT_NFLOG 239
+
+/*
+ * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
+ * for Ethernet packets with a 4-byte pseudo-header and always
+ * with the payload including the FCS, as supplied by their
+ * netANALYZER hardware and software.
+ *
+ * Requested by Holger P. Frommer <HPfrommer@hilscher.com>
+ */
+#define DLT_NETANALYZER 240
+
+/*
+ * Hilscher Gesellschaft fuer Systemautomation mbH link-layer type
+ * for Ethernet packets with a 4-byte pseudo-header and FCS and
+ * with the Ethernet header preceded by 7 bytes of preamble and
+ * 1 byte of SFD, as supplied by their netANALYZER hardware and
+ * software.
+ *
+ * Requested by Holger P. Frommer <HPfrommer@hilscher.com>
+ */
+#define DLT_NETANALYZER_TRANSPARENT 241
+
+/*
+ * IP-over-Infiniband, as specified by RFC 4391.
+ *
+ * Requested by Petr Sumbera <petr.sumbera@oracle.com>.
+ */
+#define DLT_IPOIB 242
+
+/*
+ * MPEG-2 transport stream (ISO 13818-1/ITU-T H.222.0).
+ *
+ * Requested by Guy Martin <gmsoft@tuxicoman.be>.
+ */
+#define DLT_MPEG_2_TS 243
+
+/*
+ * ng4T GmbH's UMTS Iub/Iur-over-ATM and Iub/Iur-over-IP format as
+ * used by their ng40 protocol tester.
+ *
+ * Requested by Jens Grimmer <jens.grimmer@ng4t.com>.
+ */
+#define DLT_NG40 244
+
+/*
+ * Pseudo-header giving adapter number and flags, followed by an NFC
+ * (Near-Field Communications) Logical Link Control Protocol (LLCP) PDU,
+ * as specified by NFC Forum Logical Link Control Protocol Technical
+ * Specification LLCP 1.1.
+ *
+ * Requested by Mike Wakerly <mikey@google.com>.
+ */
+#define DLT_NFC_LLCP 245
+
+/*
+ * USB packets, beginning with a Darwin (macOS, etc.) USB header.
+ */
+#define DLT_USB_DARWIN 266
+
+#define DLT_MATCHING_MAX 266 /* highest value in the "matching" range */
+
/*
* The instruction encodings.
*/
#define BPF_STMT(code, k) { (u_short)(code), 0, 0, k }
#define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k }
+#pragma pack(4)
+
+/*
+ * Structure to retrieve available DLTs for the interface.
+ */
+struct bpf_dltlist {
+ u_int32_t bfl_len; /* number of bfd_list array */
+ union {
+ u_int32_t *bflu_list; /* array of DLTs */
+ u_int64_t bflu_pad;
+ } bfl_u;
+};
+#define bfl_list bfl_u.bflu_list
+
+#pragma pack()
+
+#ifdef KERNEL_PRIVATE
+#define BPF_MIN_PKT_SIZE 40
+#define PORT_DNS 53
+#define PORT_BOOTPS 67
+#define PORT_BOOTPC 68
+#define PORT_ISAKMP 500
+#define PORT_ISAKMP_NATT 4500 /* rfc3948 */
+
/* Forward declerations */
struct ifnet;
struct mbuf;
+#define BPF_PACKET_TYPE_MBUF 0
+
+struct bpf_packet {
+ int bpfp_type;
+ void * bpfp_header; /* optional */
+ size_t bpfp_header_length;
+ union {
+ struct mbuf *bpfpu_mbuf;
+ void * bpfpu_ptr;
+ } bpfp_u;
+#define bpfp_mbuf bpfp_u.bpfpu_mbuf
+#define bpfp_ptr bpfp_u.bpfpu_ptr
+ size_t bpfp_total_length; /* length including optional header */
+};
+
+extern int bpf_validate(const struct bpf_insn *, int);
+extern void bpfdetach(struct ifnet *);
+extern void bpfilterattach(int);
+extern u_int bpf_filter(const struct bpf_insn *, u_char *, u_int, u_int);
+#endif /* KERNEL_PRIVATE */
+
#ifdef KERNEL
-#ifdef __APPLE_API_UNSTABLE
-int bpf_validate __P((const struct bpf_insn *, int));
-void bpf_tap __P((struct ifnet *, u_char *, u_int));
-void bpf_mtap __P((struct ifnet *, struct mbuf *));
-void bpfattach __P((struct ifnet *, u_int, u_int));
-void bpfdetach __P((struct ifnet *));
-
-void bpfilterattach __P((int));
-u_int bpf_filter __P((const struct bpf_insn *, u_char *, u_int, u_int));
-
-#ifdef __APPLE__
-#define BPF_TAP(x, y, z) bpf_tap(x,y,z)
-#define BPF_MTAP(x, y) bpf_mtap(x, y)
-#endif /* __APPLE__ */
-#endif /* __APPLE_API_UNSTABLE */
+#ifndef BPF_TAP_MODE_T
+#define BPF_TAP_MODE_T
+/*!
+ @enum BPF tap mode
+ @abstract Constants defining interface families.
+ @constant BPF_MODE_DISABLED Disable bpf.
+ @constant BPF_MODE_INPUT Enable input only.
+ @constant BPF_MODE_OUTPUT Enable output only.
+ @constant BPF_MODE_INPUT_OUTPUT Enable input and output.
+*/
+
+enum {
+ BPF_MODE_DISABLED = 0,
+ BPF_MODE_INPUT = 1,
+ BPF_MODE_OUTPUT = 2,
+ BPF_MODE_INPUT_OUTPUT = 3
+};
+/*!
+ @typedef bpf_tap_mode
+ @abstract Mode for tapping. BPF_MODE_DISABLED/BPF_MODE_INPUT_OUTPUT etc.
+*/
+typedef u_int32_t bpf_tap_mode;
+#endif /* !BPF_TAP_MODE_T */
+
+/*!
+ @typedef bpf_send_func
+ @discussion bpf_send_func is called when a bpf file descriptor is
+ used to send a raw packet on the interface. The mbuf and data
+ link type are specified. The callback is responsible for
+ releasing the mbuf whether or not it returns an error.
+ @param interface The interface the packet is being sent on.
+ @param data_link_type The data link type the bpf device is attached to.
+ @param packet The packet to be sent.
+ */
+typedef errno_t (*bpf_send_func)(ifnet_t interface, u_int32_t data_link_type,
+ mbuf_t packet);
+
+/*!
+ @typedef bpf_tap_func
+ @discussion bpf_tap_func is called when the tap state of the
+ interface changes. This happens when a bpf device attaches to an
+ interface or detaches from an interface. The tap mode will join
+ together (bit or) the modes of all bpf devices using that
+ interface for that dlt. If you return an error from this
+ function, the bpf device attach attempt that triggered the tap
+ will fail. If this function was called bacuse the tap state was
+ decreasing (tap in or out is stopping), the error will be
+ ignored.
+ @param interface The interface being tapped.
+ @param data_link_type The data link type being tapped.
+ @param direction The direction of the tap.
+ */
+typedef errno_t (*bpf_tap_func)(ifnet_t interface, u_int32_t data_link_type,
+ bpf_tap_mode direction);
+
+/*!
+ @function bpfattach
+ @discussion Registers an interface with BPF. This allows bpf devices
+ to attach to your interface to capture packets. Your interface
+ will be unregistered automatically when your interface is
+ detached.
+ @param interface The interface to register with BPF.
+ @param data_link_type The data link type of the interface. See the
+ DLT_* defines in bpf.h.
+ @param header_length The length, in bytes, of the data link header.
+ */
+extern void bpfattach(ifnet_t interface, u_int data_link_type,
+ u_int header_length);
+
+/*!
+ @function bpf_attach
+ @discussion Registers an interface with BPF. This allows bpf devices
+ to attach to your interface to capture and transmit packets.
+ Your interface will be unregistered automatically when your
+ interface is detached. You may register multiple times with
+ different data link types. An 802.11 interface would use this to
+ allow clients to pick whether they want just an ethernet style
+ frame or the 802.11 wireless headers as well. The first dlt you
+ register will be considered the default. Any bpf device attaches
+ that do not specify a data link type will use the default.
+ @param interface The interface to register with BPF.
+ @param data_link_type The data link type of the interface. See the
+ DLT_* defines in bpf.h.
+ @param header_length The length, in bytes, of the data link header.
+ @param send See the bpf_send_func described above.
+ @param tap See the bpf_tap_func described above.
+ */
+extern errno_t bpf_attach(ifnet_t interface, u_int32_t data_link_type,
+ u_int32_t header_length, bpf_send_func send, bpf_tap_func tap);
+
+/*!
+ @function bpf_tap_in
+ @discussion Call this function when your interface receives a
+ packet. This function will check if any bpf devices need a
+ a copy of the packet.
+ @param interface The interface the packet was received on.
+ @param dlt The data link type of the packet.
+ @param packet The packet received.
+ @param header An optional pointer to a header that will be prepended.
+ @param header_len If the header was specified, the length of the header.
+ */
+extern void bpf_tap_in(ifnet_t interface, u_int32_t dlt, mbuf_t packet,
+ void *header, size_t header_len);
+
+/*!
+ @function bpf_tap_out
+ @discussion Call this function when your interface transmits a
+ packet. This function will check if any bpf devices need a
+ a copy of the packet.
+ @param interface The interface the packet was or will be transmitted on.
+ @param dlt The data link type of the packet.
+ @param packet The packet received.
+ @param header An optional pointer to a header that will be prepended.
+ @param header_len If the header was specified, the length of the header.
+ */
+extern void bpf_tap_out(ifnet_t interface, u_int32_t dlt, mbuf_t packet,
+ void *header, size_t header_len);
+
#endif /* KERNEL */
/*
*/
#define BPF_MEMWORDS 16
-#endif
+#endif /* _NET_BPF_H_ */
projects / apple / xnu.git / blobdiff