/* * Copyright (c) 2000-2018 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * 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. * * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1990, 1991, 1993 * 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 8.1 (Berkeley) 6/10/93 * @(#)bpf.h 1.34 (LBL) 6/16/96 * * $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 typedef int32_t bpf_int32; typedef u_int32_t bpf_u_int32; /* * Alignment macros. BPF_WORDALIGN rounds up to the next * even multiple of BPF_ALIGNMENT. */ #define BPF_ALIGNMENT sizeof(int32_t) #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) #define BPF_MAXINSNS 512 #define BPF_MAXBUFSIZE 0x80000 #define BPF_MINBUFSIZE 32 /* * Structure for BIOCSETF. */ struct bpf_program { u_int bf_len; 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. */ struct bpf_stat { u_int bs_recv; /* number of packets received */ u_int bs_drop; /* number of packets dropped */ }; /* * 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; }; #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 BIOCGRSIG _IOR('B',114, u_int) #define BIOCSRSIG _IOW('B',115, u_int) #define BIOCGHDRCMPLT _IOR('B',116, u_int) #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 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. */ #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_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 */ #define DLT_SLIP 8 /* Serial Line IP */ #define DLT_PPP 9 /* Point-to-point Protocol */ #define DLT_FDDI 10 /* FDDI */ #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. */ #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 */ /* * 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 * 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 */ /* * Values between 106 and 107 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_ 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. * * 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 for any purpose. */ #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_ 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. */ /* 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_u_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 } #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 #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 */ /* * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST). */ #define BPF_MEMWORDS 16 #endif /* _NET_BPF_H_ */