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/*
* Fundamental constants relating to ethernet.
*
* $FreeBSD: release/9.1.0/sys/net/ethernet.h 191148 2009-04-16 20:30:28Z kmacy $
*
*/
#ifndef _NET_ETHERNET_H_
#define _NET_ETHERNET_H_
/*
* Some basic Ethernet constants.
*/
#define ETHER_ADDR_LEN 6 /* length of an Ethernet address */
#define ETHER_TYPE_LEN 2 /* length of the Ethernet type field */
#define ETHER_CRC_LEN 4 /* length of the Ethernet CRC */
#define ETHER_HDR_LEN (ETHER_ADDR_LEN*2+ETHER_TYPE_LEN)
#define ETHER_MIN_LEN 64 /* minimum frame len, including CRC */
#define ETHER_MAX_LEN 1518 /* maximum frame len, including CRC */
#define ETHER_MAX_LEN_JUMBO 9018 /* max jumbo frame len, including CRC */
#define ETHER_VLAN_ENCAP_LEN 4 /* len of 802.1Q VLAN encapsulation */
/*
* Mbuf adjust factor to force 32-bit alignment of IP header.
* Drivers should do m_adj(m, ETHER_ALIGN) when setting up a
* receive so the upper layers get the IP header properly aligned
* past the 14-byte Ethernet header.
*/
#define ETHER_ALIGN 2 /* driver adjust for IP hdr alignment */
/*
* Compute the maximum frame size based on ethertype (i.e. possible
* encapsulation) and whether or not an FCS is present.
*/
#define ETHER_MAX_FRAME(ifp, etype, hasfcs) \
((ifp)->if_mtu + ETHER_HDR_LEN + \
((hasfcs) ? ETHER_CRC_LEN : 0) + \
(((etype) == ETHERTYPE_VLAN) ? ETHER_VLAN_ENCAP_LEN : 0))
/*
* Ethernet-specific mbuf flags.
*/
#define M_HASFCS M_PROTO5 /* FCS included at end of frame */
/*
* Ethernet CRC32 polynomials (big- and little-endian verions).
*/
#define ETHER_CRC_POLY_LE 0xedb88320
#define ETHER_CRC_POLY_BE 0x04c11db6
/*
* A macro to validate a length with
*/
#define ETHER_IS_VALID_LEN(foo) \
((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN)
/*
* Structure of a 10Mb/s Ethernet header.
*/
struct ether_header {
u_char ether_dhost[ETHER_ADDR_LEN];
u_char ether_shost[ETHER_ADDR_LEN];
u_short ether_type;
} __packed;
/*
* Structure of a 48-bit Ethernet address.
*/
struct ether_addr {
u_char octet[ETHER_ADDR_LEN];
} __packed;
#define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */
/*
* NOTE: 0x0000-0x05DC (0..1500) are generally IEEE 802.3 length fields.
* However, there are some conflicts.
*/
#define ETHERTYPE_8023 0x0004 /* IEEE 802.3 packet */
/* 0x0101 .. 0x1FF Experimental */
#define ETHERTYPE_PUP 0x0200 /* Xerox PUP protocol - see 0A00 */
#define ETHERTYPE_PUPAT 0x0200 /* PUP Address Translation - see 0A01 */
#define ETHERTYPE_SPRITE 0x0500 /* ??? */
/* 0x0400 Nixdorf */
#define ETHERTYPE_NS 0x0600 /* XNS */
#define ETHERTYPE_NSAT 0x0601 /* XNS Address Translation (3Mb only) */
#define ETHERTYPE_DLOG1 0x0660 /* DLOG (?) */
#define ETHERTYPE_DLOG2 0x0661 /* DLOG (?) */
#define ETHERTYPE_IP 0x0800 /* IP protocol */
#define ETHERTYPE_X75 0x0801 /* X.75 Internet */
#define ETHERTYPE_NBS 0x0802 /* NBS Internet */
#define ETHERTYPE_ECMA 0x0803 /* ECMA Internet */
#define ETHERTYPE_CHAOS 0x0804 /* CHAOSnet */
#define ETHERTYPE_X25 0x0805 /* X.25 Level 3 */
#define ETHERTYPE_ARP 0x0806 /* Address resolution protocol */
#define ETHERTYPE_NSCOMPAT 0x0807 /* XNS Compatibility */
#define ETHERTYPE_FRARP 0x0808 /* Frame Relay ARP (RFC1701) */
/* 0x081C Symbolics Private */
/* 0x0888 - 0x088A Xyplex */
#define ETHERTYPE_UBDEBUG 0x0900 /* Ungermann-Bass network debugger */
#define ETHERTYPE_IEEEPUP 0x0A00 /* Xerox IEEE802.3 PUP */
#define ETHERTYPE_IEEEPUPAT 0x0A01 /* Xerox IEEE802.3 PUP Address Translation */
#define ETHERTYPE_VINES 0x0BAD /* Banyan VINES */
#define ETHERTYPE_VINESLOOP 0x0BAE /* Banyan VINES Loopback */
#define ETHERTYPE_VINESECHO 0x0BAF /* Banyan VINES Echo */
/* 0x1000 - 0x100F Berkeley Trailer */
/*
* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
* by an ETHER type (as given above) and then the (variable-length) header.
*/
#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
#define ETHERTYPE_NTRAILER 16
#define ETHERTYPE_DCA 0x1234 /* DCA - Multicast */
#define ETHERTYPE_VALID 0x1600 /* VALID system protocol */
#define ETHERTYPE_DOGFIGHT 0x1989 /* Artificial Horizons ("Aviator" dogfight simulator [on Sun]) */
#define ETHERTYPE_RCL 0x1995 /* Datapoint Corporation (RCL lan protocol) */
/* The following 3C0x types
are unregistered: */
#define ETHERTYPE_NBPVCD 0x3C00 /* 3Com NBP virtual circuit datagram (like XNS SPP) not registered */
#define ETHERTYPE_NBPSCD 0x3C01 /* 3Com NBP System control datagram not registered */
#define ETHERTYPE_NBPCREQ 0x3C02 /* 3Com NBP Connect request (virtual cct) not registered */
#define ETHERTYPE_NBPCRSP 0x3C03 /* 3Com NBP Connect response not registered */
#define ETHERTYPE_NBPCC 0x3C04 /* 3Com NBP Connect complete not registered */
#define ETHERTYPE_NBPCLREQ 0x3C05 /* 3Com NBP Close request (virtual cct) not registered */
#define ETHERTYPE_NBPCLRSP 0x3C06 /* 3Com NBP Close response not registered */
#define ETHERTYPE_NBPDG 0x3C07 /* 3Com NBP Datagram (like XNS IDP) not registered */
#define ETHERTYPE_NBPDGB 0x3C08 /* 3Com NBP Datagram broadcast not registered */
#define ETHERTYPE_NBPCLAIM 0x3C09 /* 3Com NBP Claim NetBIOS name not registered */
#define ETHERTYPE_NBPDLTE 0x3C0A /* 3Com NBP Delete NetBIOS name not registered */
#define ETHERTYPE_NBPRAS 0x3C0B /* 3Com NBP Remote adaptor status request not registered */
#define ETHERTYPE_NBPRAR 0x3C0C /* 3Com NBP Remote adaptor response not registered */
#define ETHERTYPE_NBPRST 0x3C0D /* 3Com NBP Reset not registered */
#define ETHERTYPE_PCS 0x4242 /* PCS Basic Block Protocol */
#define ETHERTYPE_IMLBLDIAG 0x424C /* Information Modes Little Big LAN diagnostic */
#define ETHERTYPE_DIDDLE 0x4321 /* THD - Diddle */
#define ETHERTYPE_IMLBL 0x4C42 /* Information Modes Little Big LAN */
#define ETHERTYPE_SIMNET 0x5208 /* BBN Simnet Private */
#define ETHERTYPE_DECEXPER 0x6000 /* DEC Unassigned, experimental */
#define ETHERTYPE_MOPDL 0x6001 /* DEC MOP dump/load */
#define ETHERTYPE_MOPRC 0x6002 /* DEC MOP remote console */
#define ETHERTYPE_DECnet 0x6003 /* DEC DECNET Phase IV route */
#define ETHERTYPE_DN ETHERTYPE_DECnet /* libpcap, tcpdump */
#define ETHERTYPE_LAT 0x6004 /* DEC LAT */
#define ETHERTYPE_DECDIAG 0x6005 /* DEC diagnostic protocol (at interface initialization?) */
#define ETHERTYPE_DECCUST 0x6006 /* DEC customer protocol */
#define ETHERTYPE_SCA 0x6007 /* DEC LAVC, SCA */
#define ETHERTYPE_AMBER 0x6008 /* DEC AMBER */
#define ETHERTYPE_DECMUMPS 0x6009 /* DEC MUMPS */
/* 0x6010 - 0x6014 3Com Corporation */
#define ETHERTYPE_TRANSETHER 0x6558 /* Trans Ether Bridging (RFC1701)*/
#define ETHERTYPE_RAWFR 0x6559 /* Raw Frame Relay (RFC1701) */
#define ETHERTYPE_UBDL 0x7000 /* Ungermann-Bass download */
#define ETHERTYPE_UBNIU 0x7001 /* Ungermann-Bass NIUs */
#define ETHERTYPE_UBDIAGLOOP 0x7002 /* Ungermann-Bass diagnostic/loopback */
#define ETHERTYPE_UBNMC 0x7003 /* Ungermann-Bass ??? (NMC to/from UB Bridge) */
#define ETHERTYPE_UBBST 0x7005 /* Ungermann-Bass Bridge Spanning Tree */
#define ETHERTYPE_OS9 0x7007 /* OS/9 Microware */
#define ETHERTYPE_OS9NET 0x7009 /* OS/9 Net? */
/* 0x7020 - 0x7029 LRT (England) (now Sintrom) */
#define ETHERTYPE_RACAL 0x7030 /* Racal-Interlan */
#define ETHERTYPE_PRIMENTS 0x7031 /* Prime NTS (Network Terminal Service) */
#define ETHERTYPE_CABLETRON 0x7034 /* Cabletron */
#define ETHERTYPE_CRONUSVLN 0x8003 /* Cronus VLN */
#define ETHERTYPE_CRONUS 0x8004 /* Cronus Direct */
#define ETHERTYPE_HP 0x8005 /* HP Probe */
#define ETHERTYPE_NESTAR 0x8006 /* Nestar */
#define ETHERTYPE_ATTSTANFORD 0x8008 /* AT&T/Stanford (local use) */
#define ETHERTYPE_EXCELAN 0x8010 /* Excelan */
#define ETHERTYPE_SG_DIAG 0x8013 /* SGI diagnostic type */
#define ETHERTYPE_SG_NETGAMES 0x8014 /* SGI network games */
#define ETHERTYPE_SG_RESV 0x8015 /* SGI reserved type */
#define ETHERTYPE_SG_BOUNCE 0x8016 /* SGI bounce server */
#define ETHERTYPE_APOLLODOMAIN 0x8019 /* Apollo DOMAIN */
#define ETHERTYPE_TYMSHARE 0x802E /* Tymeshare */
#define ETHERTYPE_TIGAN 0x802F /* Tigan, Inc. */
#define ETHERTYPE_REVARP 0x8035 /* Reverse addr resolution protocol */
#define ETHERTYPE_AEONIC 0x8036 /* Aeonic Systems */
#define ETHERTYPE_IPXNEW 0x8037 /* IPX (Novell Netware?) */
#define ETHERTYPE_LANBRIDGE 0x8038 /* DEC LANBridge */
#define ETHERTYPE_DSMD 0x8039 /* DEC DSM/DDP */
#define ETHERTYPE_ARGONAUT 0x803A /* DEC Argonaut Console */
#define ETHERTYPE_VAXELN 0x803B /* DEC VAXELN */
#define ETHERTYPE_DECDNS 0x803C /* DEC DNS Naming Service */
#define ETHERTYPE_ENCRYPT 0x803D /* DEC Ethernet Encryption */
#define ETHERTYPE_DECDTS 0x803E /* DEC Distributed Time Service */
#define ETHERTYPE_DECLTM 0x803F /* DEC LAN Traffic Monitor */
#define ETHERTYPE_DECNETBIOS 0x8040 /* DEC PATHWORKS DECnet NETBIOS Emulation */
#define ETHERTYPE_DECLAST 0x8041 /* DEC Local Area System Transport */
/* 0x8042 DEC Unassigned */
#define ETHERTYPE_PLANNING 0x8044 /* Planning Research Corp. */
/* 0x8046 - 0x8047 AT&T */
#define ETHERTYPE_DECAM 0x8048 /* DEC Availability Manager for Distributed Systems DECamds (but someone at DEC says not) */
#define ETHERTYPE_EXPERDATA 0x8049 /* ExperData */
#define ETHERTYPE_VEXP 0x805B /* Stanford V Kernel exp. */
#define ETHERTYPE_VPROD 0x805C /* Stanford V Kernel prod. */
#define ETHERTYPE_ES 0x805D /* Evans & Sutherland */
#define ETHERTYPE_LITTLE 0x8060 /* Little Machines */
#define ETHERTYPE_COUNTERPOINT 0x8062 /* Counterpoint Computers */
/* 0x8065 - 0x8066 Univ. of Mass @ Amherst */
#define ETHERTYPE_VEECO 0x8067 /* Veeco Integrated Auto. */
#define ETHERTYPE_GENDYN 0x8068 /* General Dynamics */
#define ETHERTYPE_ATT 0x8069 /* AT&T */
#define ETHERTYPE_AUTOPHON 0x806A /* Autophon */
#define ETHERTYPE_COMDESIGN 0x806C /* ComDesign */
#define ETHERTYPE_COMPUGRAPHIC 0x806D /* Compugraphic Corporation */
/* 0x806E - 0x8077 Landmark Graphics Corp. */
#define ETHERTYPE_MATRA 0x807A /* Matra */
#define ETHERTYPE_DDE 0x807B /* Dansk Data Elektronik */
#define ETHERTYPE_MERIT 0x807C /* Merit Internodal (or Univ of Michigan?) */
/* 0x807D - 0x807F Vitalink Communications */
#define ETHERTYPE_VLTLMAN 0x8080 /* Vitalink TransLAN III Management */
/* 0x8081 - 0x8083 Counterpoint Computers */
/* 0x8088 - 0x808A Xyplex */
#define ETHERTYPE_ATALK 0x809B /* AppleTalk */
#define ETHERTYPE_AT ETHERTYPE_ATALK /* old NetBSD */
#define ETHERTYPE_APPLETALK ETHERTYPE_ATALK /* HP-UX */
/* 0x809C - 0x809E Datability */
#define ETHERTYPE_SPIDER 0x809F /* Spider Systems Ltd. */
/* 0x80A3 Nixdorf */
/* 0x80A4 - 0x80B3 Siemens Gammasonics Inc. */
/* 0x80C0 - 0x80C3 DCA (Digital Comm. Assoc.) Data Exchange Cluster */
/* 0x80C4 - 0x80C5 Banyan Systems */
#define ETHERTYPE_PACER 0x80C6 /* Pacer Software */
#define ETHERTYPE_APPLITEK 0x80C7 /* Applitek Corporation */
/* 0x80C8 - 0x80CC Intergraph Corporation */
/* 0x80CD - 0x80CE Harris Corporation */
/* 0x80CF - 0x80D2 Taylor Instrument */
/* 0x80D3 - 0x80D4 Rosemount Corporation */
#define ETHERTYPE_SNA 0x80D5 /* IBM SNA Services over Ethernet */
#define ETHERTYPE_VARIAN 0x80DD /* Varian Associates */
/* 0x80DE - 0x80DF TRFS (Integrated Solutions Transparent Remote File System) */
/* 0x80E0 - 0x80E3 Allen-Bradley */
/* 0x80E4 - 0x80F0 Datability */
#define ETHERTYPE_RETIX 0x80F2 /* Retix */
#define ETHERTYPE_AARP 0x80F3 /* AppleTalk AARP */
/* 0x80F4 - 0x80F5 Kinetics */
#define ETHERTYPE_APOLLO 0x80F7 /* Apollo Computer */
#define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging (XXX conflicts) */
/* 0x80FF - 0x8101 Wellfleet Communications (XXX conflicts) */
#define ETHERTYPE_BOFL 0x8102 /* Wellfleet; BOFL (Breath OF Life) pkts [every 5-10 secs.] */
#define ETHERTYPE_WELLFLEET 0x8103 /* Wellfleet Communications */
/* 0x8107 - 0x8109 Symbolics Private */
#define ETHERTYPE_TALARIS 0x812B /* Talaris */
#define ETHERTYPE_WATERLOO 0x8130 /* Waterloo Microsystems Inc. (XXX which?) */
#define ETHERTYPE_HAYES 0x8130 /* Hayes Microcomputers (XXX which?) */
#define ETHERTYPE_VGLAB 0x8131 /* VG Laboratory Systems */
/* 0x8132 - 0x8137 Bridge Communications */
#define ETHERTYPE_IPX 0x8137 /* Novell (old) NetWare IPX (ECONFIG E option) */
#define ETHERTYPE_NOVELL 0x8138 /* Novell, Inc. */
/* 0x8139 - 0x813D KTI */
#define ETHERTYPE_MUMPS 0x813F /* M/MUMPS data sharing */
#define ETHERTYPE_AMOEBA 0x8145 /* Vrije Universiteit (NL) Amoeba 4 RPC (obsolete) */
#define ETHERTYPE_FLIP 0x8146 /* Vrije Universiteit (NL) FLIP (Fast Local Internet Protocol) */
#define ETHERTYPE_VURESERVED 0x8147 /* Vrije Universiteit (NL) [reserved] */
#define ETHERTYPE_LOGICRAFT 0x8148 /* Logicraft */
#define ETHERTYPE_NCD 0x8149 /* Network Computing Devices */
#define ETHERTYPE_ALPHA 0x814A /* Alpha Micro */
#define ETHERTYPE_SNMP 0x814C /* SNMP over Ethernet (see RFC1089) */
/* 0x814D - 0x814E BIIN */
#define ETHERTYPE_TEC 0x814F /* Technically Elite Concepts */
#define ETHERTYPE_RATIONAL 0x8150 /* Rational Corp */
/* 0x8151 - 0x8153 Qualcomm */
/* 0x815C - 0x815E Computer Protocol Pty Ltd */
/* 0x8164 - 0x8166 Charles River Data Systems */
#define ETHERTYPE_XTP 0x817D /* Protocol Engines XTP */
#define ETHERTYPE_SGITW 0x817E /* SGI/Time Warner prop. */
#define ETHERTYPE_HIPPI_FP 0x8180 /* HIPPI-FP encapsulation */
#define ETHERTYPE_STP 0x8181 /* Scheduled Transfer STP, HIPPI-ST */
/* 0x8182 - 0x8183 Reserved for HIPPI-6400 */
/* 0x8184 - 0x818C SGI prop. */
#define ETHERTYPE_MOTOROLA 0x818D /* Motorola */
#define ETHERTYPE_NETBEUI 0x8191 /* PowerLAN NetBIOS/NetBEUI (PC) */
/* 0x819A - 0x81A3 RAD Network Devices */
/* 0x81B7 - 0x81B9 Xyplex */
/* 0x81CC - 0x81D5 Apricot Computers */
/* 0x81D6 - 0x81DD Artisoft Lantastic */
/* 0x81E6 - 0x81EF Polygon */
/* 0x81F0 - 0x81F2 Comsat Labs */
/* 0x81F3 - 0x81F5 SAIC */
/* 0x81F6 - 0x81F8 VG Analytical */
/* 0x8203 - 0x8205 QNX Software Systems Ltd. */
/* 0x8221 - 0x8222 Ascom Banking Systems */
/* 0x823E - 0x8240 Advanced Encryption Systems */
/* 0x8263 - 0x826A Charles River Data Systems */
/* 0x827F - 0x8282 Athena Programming */
/* 0x829A - 0x829B Inst Ind Info Tech */
/* 0x829C - 0x82AB Taurus Controls */
/* 0x82AC - 0x8693 Walker Richer & Quinn */
#define ETHERTYPE_ACCTON 0x8390 /* Accton Technologies (unregistered) */
#define ETHERTYPE_TALARISMC 0x852B /* Talaris multicast */
#define ETHERTYPE_KALPANA 0x8582 /* Kalpana */
/* 0x8694 - 0x869D Idea Courier */
/* 0x869E - 0x86A1 Computer Network Tech */
/* 0x86A3 - 0x86AC Gateway Communications */
#define ETHERTYPE_SECTRA 0x86DB /* SECTRA */
#define ETHERTYPE_IPV6 0x86DD /* IP protocol version 6 */
#define ETHERTYPE_DELTACON 0x86DE /* Delta Controls */
#define ETHERTYPE_ATOMIC 0x86DF /* ATOMIC */
/* 0x86E0 - 0x86EF Landis & Gyr Powers */
/* 0x8700 - 0x8710 Motorola */
#define ETHERTYPE_RDP 0x8739 /* Control Technology Inc. RDP Without IP */
#define ETHERTYPE_MICP 0x873A /* Control Technology Inc. Mcast Industrial Ctrl Proto. */
/* 0x873B - 0x873C Control Technology Inc. Proprietary */
#define ETHERTYPE_TCPCOMP 0x876B /* TCP/IP Compression (RFC1701) */
#define ETHERTYPE_IPAS 0x876C /* IP Autonomous Systems (RFC1701) */
#define ETHERTYPE_SECUREDATA 0x876D /* Secure Data (RFC1701) */
#define ETHERTYPE_FLOWCONTROL 0x8808 /* 802.3x flow control packet */
#define ETHERTYPE_SLOW 0x8809 /* 802.3ad link aggregation (LACP) */
#define ETHERTYPE_PPP 0x880B /* PPP (obsolete by PPPoE) */
#define ETHERTYPE_HITACHI 0x8820 /* Hitachi Cable (Optoelectronic Systems Laboratory) */
#define ETHERTYPE_MPLS 0x8847 /* MPLS Unicast */
#define ETHERTYPE_MPLS_MCAST 0x8848 /* MPLS Multicast */
#define ETHERTYPE_AXIS 0x8856 /* Axis Communications AB proprietary bootstrap/config */
#define ETHERTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
#define ETHERTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
#define ETHERTYPE_LANPROBE 0x8888 /* HP LanProbe test? */
#define ETHERTYPE_PAE 0x888e /* EAPOL PAE/802.1x */
#define ETHERTYPE_LOOPBACK 0x9000 /* Loopback: used to test interfaces */
#define ETHERTYPE_LBACK ETHERTYPE_LOOPBACK /* DEC MOP loopback */
#define ETHERTYPE_XNSSM 0x9001 /* 3Com (Formerly Bridge Communications), XNS Systems Management */
#define ETHERTYPE_TCPSM 0x9002 /* 3Com (Formerly Bridge Communications), TCP/IP Systems Management */
#define ETHERTYPE_BCLOOP 0x9003 /* 3Com (Formerly Bridge Communications), loopback detection */
#define ETHERTYPE_DEBNI 0xAAAA /* DECNET? Used by VAX 6220 DEBNI */
#define ETHERTYPE_SONIX 0xFAF5 /* Sonix Arpeggio */
#define ETHERTYPE_VITAL 0xFF00 /* BBN VITAL-LanBridge cache wakeups */
/* 0xFF00 - 0xFFOF ISC Bunker Ramo */
#define ETHERTYPE_MAX 0xFFFF /* Maximum valid ethernet type, reserved */
/*
* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
* by an ETHER type (as given above) and then the (variable-length) header.
*/
#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
#define ETHERTYPE_NTRAILER 16
#define ETHERMTU (ETHER_MAX_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
#define ETHERMIN (ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
#define ETHERMTU_JUMBO (ETHER_MAX_LEN_JUMBO - ETHER_HDR_LEN - ETHER_CRC_LEN)
/*
* The ETHER_BPF_MTAP macro should be used by drivers which support hardware
* offload for VLAN tag processing. It will check the mbuf to see if it has
* M_VLANTAG set, and if it does, will pass the packet along to
* ether_vlan_mtap. This function will re-insert VLAN tags for the duration
* of the tap, so they show up properly for network analyzers.
*/
#define ETHER_BPF_MTAP(_ifp, _m) do { \
if (bpf_peers_present((_ifp)->if_bpf)) { \
M_ASSERTVALID(_m); \
if (((_m)->m_flags & M_VLANTAG) != 0) \
ether_vlan_mtap((_ifp)->if_bpf, (_m), NULL, 0); \
else \
bpf_mtap((_ifp)->if_bpf, (_m)); \
} \
} while (0)
#ifdef _KERNEL
struct ifnet;
struct mbuf;
struct route;
struct sockaddr;
struct bpf_if;
extern uint32_t ether_crc32_le(const uint8_t *, size_t);
extern uint32_t ether_crc32_be(const uint8_t *, size_t);
extern void ether_demux(struct ifnet *, struct mbuf *);
extern void ether_ifattach(struct ifnet *, const u_int8_t *);
extern void ether_ifdetach(struct ifnet *);
extern int ether_ioctl(struct ifnet *, u_long, caddr_t);
extern int ether_output(struct ifnet *,
struct mbuf *, struct sockaddr *, struct route *);
extern int ether_output_frame(struct ifnet *, struct mbuf *);
extern char *ether_sprintf(const u_int8_t *);
void ether_vlan_mtap(struct bpf_if *, struct mbuf *,
void *, u_int);
struct mbuf *ether_vlanencap(struct mbuf *, uint16_t);
#else /* _KERNEL */
#include <sys/cdefs.h>
/*
* Ethernet address conversion/parsing routines.
*/
__BEGIN_DECLS
struct ether_addr *ether_aton(const char *);
struct ether_addr *ether_aton_r(const char *, struct ether_addr *);
int ether_hostton(const char *, struct ether_addr *);
int ether_line(const char *, struct ether_addr *, char *);
char *ether_ntoa(const struct ether_addr *);
char *ether_ntoa_r(const struct ether_addr *, char *);
int ether_ntohost(char *, const struct ether_addr *);
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_NET_ETHERNET_H_ */