ethernet.h revision 164396
1/* 2 * Fundamental constants relating to ethernet. 3 * 4 * $FreeBSD: head/sys/net/ethernet.h 164396 2006-11-18 23:17:22Z csjp $ 5 * 6 */ 7 8#ifndef _NET_ETHERNET_H_ 9#define _NET_ETHERNET_H_ 10 11/* 12 * Somce basic Ethernet constants. 13 */ 14#define ETHER_ADDR_LEN 6 /* length of an Ethernet address */ 15#define ETHER_TYPE_LEN 2 /* length of the Ethernet type field */ 16#define ETHER_CRC_LEN 4 /* length of the Ethernet CRC */ 17#define ETHER_HDR_LEN (ETHER_ADDR_LEN*2+ETHER_TYPE_LEN) 18#define ETHER_MIN_LEN 64 /* minimum frame len, including CRC */ 19#define ETHER_MAX_LEN 1518 /* maximum frame len, including CRC */ 20#define ETHER_MAX_LEN_JUMBO 9018 /* max jumbo frame len, including CRC */ 21 22#define ETHER_VLAN_ENCAP_LEN 4 /* len of 802.1Q VLAN encapsulation */ 23/* 24 * Mbuf adjust factor to force 32-bit alignment of IP header. 25 * Drivers should do m_adj(m, ETHER_ALIGN) when setting up a 26 * receive so the upper layers get the IP header properly aligned 27 * past the 14-byte Ethernet header. 28 */ 29#define ETHER_ALIGN 2 /* driver adjust for IP hdr alignment */ 30 31/* 32 * Compute the maximum frame size based on ethertype (i.e. possible 33 * encapsulation) and whether or not an FCS is present. 34 */ 35#define ETHER_MAX_FRAME(ifp, etype, hasfcs) \ 36 ((ifp)->if_mtu + ETHER_HDR_LEN + \ 37 ((hasfcs) ? ETHER_CRC_LEN : 0) + \ 38 (((etype) == ETHERTYPE_VLAN) ? ETHER_VLAN_ENCAP_LEN : 0)) 39 40/* 41 * Ethernet-specific mbuf flags. 42 */ 43#define M_HASFCS M_PROTO5 /* FCS included at end of frame */ 44 45/* 46 * Ethernet CRC32 polynomials (big- and little-endian verions). 47 */ 48#define ETHER_CRC_POLY_LE 0xedb88320 49#define ETHER_CRC_POLY_BE 0x04c11db6 50 51/* 52 * A macro to validate a length with 53 */ 54#define ETHER_IS_VALID_LEN(foo) \ 55 ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN) 56 57/* 58 * Structure of a 10Mb/s Ethernet header. 59 */ 60struct ether_header { 61 u_char ether_dhost[ETHER_ADDR_LEN]; 62 u_char ether_shost[ETHER_ADDR_LEN]; 63 u_short ether_type; 64} __packed; 65 66/* 67 * Structure of a 48-bit Ethernet address. 68 */ 69struct ether_addr { 70 u_char octet[ETHER_ADDR_LEN]; 71}; 72 73#define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */ 74 75/* 76 * NOTE: 0x0000-0x05DC (0..1500) are generally IEEE 802.3 length fields. 77 * However, there are some conflicts. 78 */ 79 80#define ETHERTYPE_8023 0x0004 /* IEEE 802.3 packet */ 81 /* 0x0101 .. 0x1FF Experimental */ 82#define ETHERTYPE_PUP 0x0200 /* Xerox PUP protocol - see 0A00 */ 83#define ETHERTYPE_PUPAT 0x0200 /* PUP Address Translation - see 0A01 */ 84#define ETHERTYPE_SPRITE 0x0500 /* ??? */ 85 /* 0x0400 Nixdorf */ 86#define ETHERTYPE_NS 0x0600 /* XNS */ 87#define ETHERTYPE_NSAT 0x0601 /* XNS Address Translation (3Mb only) */ 88#define ETHERTYPE_DLOG1 0x0660 /* DLOG (?) */ 89#define ETHERTYPE_DLOG2 0x0661 /* DLOG (?) */ 90#define ETHERTYPE_IP 0x0800 /* IP protocol */ 91#define ETHERTYPE_X75 0x0801 /* X.75 Internet */ 92#define ETHERTYPE_NBS 0x0802 /* NBS Internet */ 93#define ETHERTYPE_ECMA 0x0803 /* ECMA Internet */ 94#define ETHERTYPE_CHAOS 0x0804 /* CHAOSnet */ 95#define ETHERTYPE_X25 0x0805 /* X.25 Level 3 */ 96#define ETHERTYPE_ARP 0x0806 /* Address resolution protocol */ 97#define ETHERTYPE_NSCOMPAT 0x0807 /* XNS Compatibility */ 98#define ETHERTYPE_FRARP 0x0808 /* Frame Relay ARP (RFC1701) */ 99 /* 0x081C Symbolics Private */ 100 /* 0x0888 - 0x088A Xyplex */ 101#define ETHERTYPE_UBDEBUG 0x0900 /* Ungermann-Bass network debugger */ 102#define ETHERTYPE_IEEEPUP 0x0A00 /* Xerox IEEE802.3 PUP */ 103#define ETHERTYPE_IEEEPUPAT 0x0A01 /* Xerox IEEE802.3 PUP Address Translation */ 104#define ETHERTYPE_VINES 0x0BAD /* Banyan VINES */ 105#define ETHERTYPE_VINESLOOP 0x0BAE /* Banyan VINES Loopback */ 106#define ETHERTYPE_VINESECHO 0x0BAF /* Banyan VINES Echo */ 107 108/* 0x1000 - 0x100F Berkeley Trailer */ 109/* 110 * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have 111 * (type-ETHERTYPE_TRAIL)*512 bytes of data followed 112 * by an ETHER type (as given above) and then the (variable-length) header. 113 */ 114#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */ 115#define ETHERTYPE_NTRAILER 16 116 117#define ETHERTYPE_DCA 0x1234 /* DCA - Multicast */ 118#define ETHERTYPE_VALID 0x1600 /* VALID system protocol */ 119#define ETHERTYPE_DOGFIGHT 0x1989 /* Artificial Horizons ("Aviator" dogfight simulator [on Sun]) */ 120#define ETHERTYPE_RCL 0x1995 /* Datapoint Corporation (RCL lan protocol) */ 121 122 /* The following 3C0x types 123 are unregistered: */ 124#define ETHERTYPE_NBPVCD 0x3C00 /* 3Com NBP virtual circuit datagram (like XNS SPP) not registered */ 125#define ETHERTYPE_NBPSCD 0x3C01 /* 3Com NBP System control datagram not registered */ 126#define ETHERTYPE_NBPCREQ 0x3C02 /* 3Com NBP Connect request (virtual cct) not registered */ 127#define ETHERTYPE_NBPCRSP 0x3C03 /* 3Com NBP Connect repsonse not registered */ 128#define ETHERTYPE_NBPCC 0x3C04 /* 3Com NBP Connect complete not registered */ 129#define ETHERTYPE_NBPCLREQ 0x3C05 /* 3Com NBP Close request (virtual cct) not registered */ 130#define ETHERTYPE_NBPCLRSP 0x3C06 /* 3Com NBP Close response not registered */ 131#define ETHERTYPE_NBPDG 0x3C07 /* 3Com NBP Datagram (like XNS IDP) not registered */ 132#define ETHERTYPE_NBPDGB 0x3C08 /* 3Com NBP Datagram broadcast not registered */ 133#define ETHERTYPE_NBPCLAIM 0x3C09 /* 3Com NBP Claim NetBIOS name not registered */ 134#define ETHERTYPE_NBPDLTE 0x3C0A /* 3Com NBP Delete Netbios name not registered */ 135#define ETHERTYPE_NBPRAS 0x3C0B /* 3Com NBP Remote adaptor status request not registered */ 136#define ETHERTYPE_NBPRAR 0x3C0C /* 3Com NBP Remote adaptor response not registered */ 137#define ETHERTYPE_NBPRST 0x3C0D /* 3Com NBP Reset not registered */ 138 139#define ETHERTYPE_PCS 0x4242 /* PCS Basic Block Protocol */ 140#define ETHERTYPE_IMLBLDIAG 0x424C /* Information Modes Little Big LAN diagnostic */ 141#define ETHERTYPE_DIDDLE 0x4321 /* THD - Diddle */ 142#define ETHERTYPE_IMLBL 0x4C42 /* Information Modes Little Big LAN */ 143#define ETHERTYPE_SIMNET 0x5208 /* BBN Simnet Private */ 144#define ETHERTYPE_DECEXPER 0x6000 /* DEC Unassigned, experimental */ 145#define ETHERTYPE_MOPDL 0x6001 /* DEC MOP dump/load */ 146#define ETHERTYPE_MOPRC 0x6002 /* DEC MOP remote console */ 147#define ETHERTYPE_DECnet 0x6003 /* DEC DECNET Phase IV route */ 148#define ETHERTYPE_DN ETHERTYPE_DECnet /* libpcap, tcpdump */ 149#define ETHERTYPE_LAT 0x6004 /* DEC LAT */ 150#define ETHERTYPE_DECDIAG 0x6005 /* DEC diagnostic protocol (at interface initialization?) */ 151#define ETHERTYPE_DECCUST 0x6006 /* DEC customer protocol */ 152#define ETHERTYPE_SCA 0x6007 /* DEC LAVC, SCA */ 153#define ETHERTYPE_AMBER 0x6008 /* DEC AMBER */ 154#define ETHERTYPE_DECMUMPS 0x6009 /* DEC MUMPS */ 155 /* 0x6010 - 0x6014 3Com Corporation */ 156#define ETHERTYPE_TRANSETHER 0x6558 /* Trans Ether Bridging (RFC1701)*/ 157#define ETHERTYPE_RAWFR 0x6559 /* Raw Frame Relay (RFC1701) */ 158#define ETHERTYPE_UBDL 0x7000 /* Ungermann-Bass download */ 159#define ETHERTYPE_UBNIU 0x7001 /* Ungermann-Bass NIUs */ 160#define ETHERTYPE_UBDIAGLOOP 0x7002 /* Ungermann-Bass diagnostic/loopback */ 161#define ETHERTYPE_UBNMC 0x7003 /* Ungermann-Bass ??? (NMC to/from UB Bridge) */ 162#define ETHERTYPE_UBBST 0x7005 /* Ungermann-Bass Bridge Spanning Tree */ 163#define ETHERTYPE_OS9 0x7007 /* OS/9 Microware */ 164#define ETHERTYPE_OS9NET 0x7009 /* OS/9 Net? */ 165 /* 0x7020 - 0x7029 LRT (England) (now Sintrom) */ 166#define ETHERTYPE_RACAL 0x7030 /* Racal-Interlan */ 167#define ETHERTYPE_PRIMENTS 0x7031 /* Prime NTS (Network Terminal Service) */ 168#define ETHERTYPE_CABLETRON 0x7034 /* Cabletron */ 169#define ETHERTYPE_CRONUSVLN 0x8003 /* Cronus VLN */ 170#define ETHERTYPE_CRONUS 0x8004 /* Cronus Direct */ 171#define ETHERTYPE_HP 0x8005 /* HP Probe */ 172#define ETHERTYPE_NESTAR 0x8006 /* Nestar */ 173#define ETHERTYPE_ATTSTANFORD 0x8008 /* AT&T/Stanford (local use) */ 174#define ETHERTYPE_EXCELAN 0x8010 /* Excelan */ 175#define ETHERTYPE_SG_DIAG 0x8013 /* SGI diagnostic type */ 176#define ETHERTYPE_SG_NETGAMES 0x8014 /* SGI network games */ 177#define ETHERTYPE_SG_RESV 0x8015 /* SGI reserved type */ 178#define ETHERTYPE_SG_BOUNCE 0x8016 /* SGI bounce server */ 179#define ETHERTYPE_APOLLODOMAIN 0x8019 /* Apollo DOMAIN */ 180#define ETHERTYPE_TYMSHARE 0x802E /* Tymeshare */ 181#define ETHERTYPE_TIGAN 0x802F /* Tigan, Inc. */ 182#define ETHERTYPE_REVARP 0x8035 /* Reverse addr resolution protocol */ 183#define ETHERTYPE_AEONIC 0x8036 /* Aeonic Systems */ 184#define ETHERTYPE_IPXNEW 0x8037 /* IPX (Novell Netware?) */ 185#define ETHERTYPE_LANBRIDGE 0x8038 /* DEC LANBridge */ 186#define ETHERTYPE_DSMD 0x8039 /* DEC DSM/DDP */ 187#define ETHERTYPE_ARGONAUT 0x803A /* DEC Argonaut Console */ 188#define ETHERTYPE_VAXELN 0x803B /* DEC VAXELN */ 189#define ETHERTYPE_DECDNS 0x803C /* DEC DNS Naming Service */ 190#define ETHERTYPE_ENCRYPT 0x803D /* DEC Ethernet Encryption */ 191#define ETHERTYPE_DECDTS 0x803E /* DEC Distributed Time Service */ 192#define ETHERTYPE_DECLTM 0x803F /* DEC LAN Traffic Monitor */ 193#define ETHERTYPE_DECNETBIOS 0x8040 /* DEC PATHWORKS DECnet NETBIOS Emulation */ 194#define ETHERTYPE_DECLAST 0x8041 /* DEC Local Area System Transport */ 195 /* 0x8042 DEC Unassigned */ 196#define ETHERTYPE_PLANNING 0x8044 /* Planning Research Corp. */ 197 /* 0x8046 - 0x8047 AT&T */ 198#define ETHERTYPE_DECAM 0x8048 /* DEC Availability Manager for Distributed Systems DECamds (but someone at DEC says not) */ 199#define ETHERTYPE_EXPERDATA 0x8049 /* ExperData */ 200#define ETHERTYPE_VEXP 0x805B /* Stanford V Kernel exp. */ 201#define ETHERTYPE_VPROD 0x805C /* Stanford V Kernel prod. */ 202#define ETHERTYPE_ES 0x805D /* Evans & Sutherland */ 203#define ETHERTYPE_LITTLE 0x8060 /* Little Machines */ 204#define ETHERTYPE_COUNTERPOINT 0x8062 /* Counterpoint Computers */ 205 /* 0x8065 - 0x8066 Univ. of Mass @ Amherst */ 206#define ETHERTYPE_VEECO 0x8067 /* Veeco Integrated Auto. */ 207#define ETHERTYPE_GENDYN 0x8068 /* General Dynamics */ 208#define ETHERTYPE_ATT 0x8069 /* AT&T */ 209#define ETHERTYPE_AUTOPHON 0x806A /* Autophon */ 210#define ETHERTYPE_COMDESIGN 0x806C /* ComDesign */ 211#define ETHERTYPE_COMPUGRAPHIC 0x806D /* Compugraphic Corporation */ 212 /* 0x806E - 0x8077 Landmark Graphics Corp. */ 213#define ETHERTYPE_MATRA 0x807A /* Matra */ 214#define ETHERTYPE_DDE 0x807B /* Dansk Data Elektronik */ 215#define ETHERTYPE_MERIT 0x807C /* Merit Internodal (or Univ of Michigan?) */ 216 /* 0x807D - 0x807F Vitalink Communications */ 217#define ETHERTYPE_VLTLMAN 0x8080 /* Vitalink TransLAN III Management */ 218 /* 0x8081 - 0x8083 Counterpoint Computers */ 219 /* 0x8088 - 0x808A Xyplex */ 220#define ETHERTYPE_ATALK 0x809B /* AppleTalk */ 221#define ETHERTYPE_AT ETHERTYPE_ATALK /* old NetBSD */ 222#define ETHERTYPE_APPLETALK ETHERTYPE_ATALK /* HP-UX */ 223 /* 0x809C - 0x809E Datability */ 224#define ETHERTYPE_SPIDER 0x809F /* Spider Systems Ltd. */ 225 /* 0x80A3 Nixdorf */ 226 /* 0x80A4 - 0x80B3 Siemens Gammasonics Inc. */ 227 /* 0x80C0 - 0x80C3 DCA (Digital Comm. Assoc.) Data Exchange Cluster */ 228 /* 0x80C4 - 0x80C5 Banyan Systems */ 229#define ETHERTYPE_PACER 0x80C6 /* Pacer Software */ 230#define ETHERTYPE_APPLITEK 0x80C7 /* Applitek Corporation */ 231 /* 0x80C8 - 0x80CC Intergraph Corporation */ 232 /* 0x80CD - 0x80CE Harris Corporation */ 233 /* 0x80CF - 0x80D2 Taylor Instrument */ 234 /* 0x80D3 - 0x80D4 Rosemount Corporation */ 235#define ETHERTYPE_SNA 0x80D5 /* IBM SNA Services over Ethernet */ 236#define ETHERTYPE_VARIAN 0x80DD /* Varian Associates */ 237 /* 0x80DE - 0x80DF TRFS (Integrated Solutions Transparent Remote File System) */ 238 /* 0x80E0 - 0x80E3 Allen-Bradley */ 239 /* 0x80E4 - 0x80F0 Datability */ 240#define ETHERTYPE_RETIX 0x80F2 /* Retix */ 241#define ETHERTYPE_AARP 0x80F3 /* AppleTalk AARP */ 242 /* 0x80F4 - 0x80F5 Kinetics */ 243#define ETHERTYPE_APOLLO 0x80F7 /* Apollo Computer */ 244#define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging (XXX conflicts) */ 245 /* 0x80FF - 0x8101 Wellfleet Communications (XXX conflicts) */ 246#define ETHERTYPE_BOFL 0x8102 /* Wellfleet; BOFL (Breath OF Life) pkts [every 5-10 secs.] */ 247#define ETHERTYPE_WELLFLEET 0x8103 /* Wellfleet Communications */ 248 /* 0x8107 - 0x8109 Symbolics Private */ 249#define ETHERTYPE_TALARIS 0x812B /* Talaris */ 250#define ETHERTYPE_WATERLOO 0x8130 /* Waterloo Microsystems Inc. (XXX which?) */ 251#define ETHERTYPE_HAYES 0x8130 /* Hayes Microcomputers (XXX which?) */ 252#define ETHERTYPE_VGLAB 0x8131 /* VG Laboratory Systems */ 253 /* 0x8132 - 0x8137 Bridge Communications */ 254#define ETHERTYPE_IPX 0x8137 /* Novell (old) NetWare IPX (ECONFIG E option) */ 255#define ETHERTYPE_NOVELL 0x8138 /* Novell, Inc. */ 256 /* 0x8139 - 0x813D KTI */ 257#define ETHERTYPE_MUMPS 0x813F /* M/MUMPS data sharing */ 258#define ETHERTYPE_AMOEBA 0x8145 /* Vrije Universiteit (NL) Amoeba 4 RPC (obsolete) */ 259#define ETHERTYPE_FLIP 0x8146 /* Vrije Universiteit (NL) FLIP (Fast Local Internet Protocol) */ 260#define ETHERTYPE_VURESERVED 0x8147 /* Vrije Universiteit (NL) [reserved] */ 261#define ETHERTYPE_LOGICRAFT 0x8148 /* Logicraft */ 262#define ETHERTYPE_NCD 0x8149 /* Network Computing Devices */ 263#define ETHERTYPE_ALPHA 0x814A /* Alpha Micro */ 264#define ETHERTYPE_SNMP 0x814C /* SNMP over Ethernet (see RFC1089) */ 265 /* 0x814D - 0x814E BIIN */ 266#define ETHERTYPE_TEC 0x814F /* Technically Elite Concepts */ 267#define ETHERTYPE_RATIONAL 0x8150 /* Rational Corp */ 268 /* 0x8151 - 0x8153 Qualcomm */ 269 /* 0x815C - 0x815E Computer Protocol Pty Ltd */ 270 /* 0x8164 - 0x8166 Charles River Data Systems */ 271#define ETHERTYPE_XTP 0x817D /* Protocol Engines XTP */ 272#define ETHERTYPE_SGITW 0x817E /* SGI/Time Warner prop. */ 273#define ETHERTYPE_HIPPI_FP 0x8180 /* HIPPI-FP encapsulation */ 274#define ETHERTYPE_STP 0x8181 /* Scheduled Transfer STP, HIPPI-ST */ 275 /* 0x8182 - 0x8183 Reserved for HIPPI-6400 */ 276 /* 0x8184 - 0x818C SGI prop. */ 277#define ETHERTYPE_MOTOROLA 0x818D /* Motorola */ 278#define ETHERTYPE_NETBEUI 0x8191 /* PowerLAN NetBIOS/NetBEUI (PC) */ 279 /* 0x819A - 0x81A3 RAD Network Devices */ 280 /* 0x81B7 - 0x81B9 Xyplex */ 281 /* 0x81CC - 0x81D5 Apricot Computers */ 282 /* 0x81D6 - 0x81DD Artisoft Lantastic */ 283 /* 0x81E6 - 0x81EF Polygon */ 284 /* 0x81F0 - 0x81F2 Comsat Labs */ 285 /* 0x81F3 - 0x81F5 SAIC */ 286 /* 0x81F6 - 0x81F8 VG Analytical */ 287 /* 0x8203 - 0x8205 QNX Software Systems Ltd. */ 288 /* 0x8221 - 0x8222 Ascom Banking Systems */ 289 /* 0x823E - 0x8240 Advanced Encryption Systems */ 290 /* 0x8263 - 0x826A Charles River Data Systems */ 291 /* 0x827F - 0x8282 Athena Programming */ 292 /* 0x829A - 0x829B Inst Ind Info Tech */ 293 /* 0x829C - 0x82AB Taurus Controls */ 294 /* 0x82AC - 0x8693 Walker Richer & Quinn */ 295#define ETHERTYPE_ACCTON 0x8390 /* Accton Technologies (unregistered) */ 296#define ETHERTYPE_TALARISMC 0x852B /* Talaris multicast */ 297#define ETHERTYPE_KALPANA 0x8582 /* Kalpana */ 298 /* 0x8694 - 0x869D Idea Courier */ 299 /* 0x869E - 0x86A1 Computer Network Tech */ 300 /* 0x86A3 - 0x86AC Gateway Communications */ 301#define ETHERTYPE_SECTRA 0x86DB /* SECTRA */ 302#define ETHERTYPE_IPV6 0x86DD /* IP protocol version 6 */ 303#define ETHERTYPE_DELTACON 0x86DE /* Delta Controls */ 304#define ETHERTYPE_ATOMIC 0x86DF /* ATOMIC */ 305 /* 0x86E0 - 0x86EF Landis & Gyr Powers */ 306 /* 0x8700 - 0x8710 Motorola */ 307#define ETHERTYPE_RDP 0x8739 /* Control Technology Inc. RDP Without IP */ 308#define ETHERTYPE_MICP 0x873A /* Control Technology Inc. Mcast Industrial Ctrl Proto. */ 309 /* 0x873B - 0x873C Control Technology Inc. Proprietary */ 310#define ETHERTYPE_TCPCOMP 0x876B /* TCP/IP Compression (RFC1701) */ 311#define ETHERTYPE_IPAS 0x876C /* IP Autonomous Systems (RFC1701) */ 312#define ETHERTYPE_SECUREDATA 0x876D /* Secure Data (RFC1701) */ 313#define ETHERTYPE_FLOWCONTROL 0x8808 /* 802.3x flow control packet */ 314#define ETHERTYPE_PPP 0x880B /* PPP (obsolete by PPPOE) */ 315#define ETHERTYPE_HITACHI 0x8820 /* Hitachi Cable (Optoelectronic Systems Laboratory) */ 316#define ETHERTYPE_MPLS 0x8847 /* MPLS Unicast */ 317#define ETHERTYPE_MPLS_MCAST 0x8848 /* MPLS Multicast */ 318#define ETHERTYPE_AXIS 0x8856 /* Axis Communications AB proprietary bootstrap/config */ 319#define ETHERTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */ 320#define ETHERTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */ 321#define ETHERTYPE_LANPROBE 0x8888 /* HP LanProbe test? */ 322#define ETHERTYPE_PAE 0x888e /* EAPOL PAE/802.1x */ 323#define ETHERTYPE_LOOPBACK 0x9000 /* Loopback: used to test interfaces */ 324#define ETHERTYPE_LBACK ETHERTYPE_LOOPBACK /* DEC MOP loopback */ 325#define ETHERTYPE_XNSSM 0x9001 /* 3Com (Formerly Bridge Communications), XNS Systems Management */ 326#define ETHERTYPE_TCPSM 0x9002 /* 3Com (Formerly Bridge Communications), TCP/IP Systems Management */ 327#define ETHERTYPE_BCLOOP 0x9003 /* 3Com (Formerly Bridge Communications), loopback detection */ 328#define ETHERTYPE_DEBNI 0xAAAA /* DECNET? Used by VAX 6220 DEBNI */ 329#define ETHERTYPE_SONIX 0xFAF5 /* Sonix Arpeggio */ 330#define ETHERTYPE_VITAL 0xFF00 /* BBN VITAL-LanBridge cache wakeups */ 331 /* 0xFF00 - 0xFFOF ISC Bunker Ramo */ 332 333#define ETHERTYPE_MAX 0xFFFF /* Maximum valid ethernet type, reserved */ 334 335/* 336 * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have 337 * (type-ETHERTYPE_TRAIL)*512 bytes of data followed 338 * by an ETHER type (as given above) and then the (variable-length) header. 339 */ 340#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */ 341#define ETHERTYPE_NTRAILER 16 342 343#define ETHERMTU (ETHER_MAX_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN) 344#define ETHERMIN (ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN) 345#define ETHERMTU_JUMBO (ETHER_MAX_LEN_JUMBO - ETHER_HDR_LEN - ETHER_CRC_LEN) 346/* 347 * The ETHER_BPF_MTAP macro should be used by drivers which support hardware 348 * offload for VLAN tag processing. It will check the mbuf to see if it has 349 * M_VLANTAG set, and if it does, will pass the packet along to 350 * ether_vlan_mtap. This function will re-insert VLAN tags for the duration 351 * of the tap, show they show up properly for network analyzers. 352 */ 353#define ETHER_BPF_MTAP(_ifp, _m) do { \ 354 if (bpf_peers_present((_ifp)->if_bpf)) { \ 355 M_ASSERTVALID(_m); \ 356 if (((_m)->m_flags & M_VLANTAG) != 0) \ 357 ether_vlan_mtap((_ifp)->if_bpf, (_m), NULL, 0); \ 358 else \ 359 bpf_mtap((_ifp)->if_bpf, (_m)); \ 360 } \ 361} while (0) 362 363#ifdef _KERNEL 364 365struct ifnet; 366struct mbuf; 367struct rtentry; 368struct sockaddr; 369struct bpf_if; 370 371extern uint32_t ether_crc32_le(const uint8_t *, size_t); 372extern uint32_t ether_crc32_be(const uint8_t *, size_t); 373extern void ether_demux(struct ifnet *, struct mbuf *); 374extern void ether_ifattach(struct ifnet *, const u_int8_t *); 375extern void ether_ifdetach(struct ifnet *); 376extern int ether_ioctl(struct ifnet *, int, caddr_t); 377extern int ether_output(struct ifnet *, 378 struct mbuf *, struct sockaddr *, struct rtentry *); 379extern int ether_output_frame(struct ifnet *, struct mbuf *); 380extern char *ether_sprintf(const u_int8_t *); 381void ether_vlan_mtap(struct bpf_if *, struct mbuf *, 382 void *, u_int); 383 384#else /* _KERNEL */ 385 386#include <sys/cdefs.h> 387 388/* 389 * Ethernet address conversion/parsing routines. 390 */ 391__BEGIN_DECLS 392struct ether_addr *ether_aton(const char *); 393int ether_hostton(const char *, struct ether_addr *); 394int ether_line(const char *, struct ether_addr *, char *); 395char *ether_ntoa(const struct ether_addr *); 396int ether_ntohost(char *, const struct ether_addr *); 397__END_DECLS 398 399#endif /* !_KERNEL */ 400 401#endif /* !_NET_ETHERNET_H_ */ 402