| /* Copyright (C) 1997, 1999, 2001, 2008 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* Based on the FreeBSD version of this file. Curiously, that file |
| lacks a copyright in the header. */ |
| |
| #ifndef __NET_ETHERNET_H |
| #define __NET_ETHERNET_H 1 |
| |
| #include <sys/cdefs.h> |
| #include <sys/types.h> |
| #include <linux/if_ether.h> /* IEEE 802.3 Ethernet constants */ |
| |
| __BEGIN_DECLS |
| |
| /* This is a name for the 48 bit ethernet address available on many |
| systems. */ |
| struct ether_addr |
| { |
| u_int8_t ether_addr_octet[ETH_ALEN]; |
| } __attribute__ ((__packed__)); |
| |
| /* 10Mb/s ethernet header */ |
| struct ether_header |
| { |
| u_int8_t ether_dhost[ETH_ALEN]; /* destination eth addr */ |
| u_int8_t ether_shost[ETH_ALEN]; /* source ether addr */ |
| u_int16_t ether_type; /* packet type ID field */ |
| } __attribute__ ((__packed__)); |
| |
| /* Ethernet protocol ID's */ |
| #define ETHERTYPE_PUP 0x0200 /* Xerox PUP */ |
| #define ETHERTYPE_SPRITE 0x0500 /* Sprite */ |
| #define ETHERTYPE_IP 0x0800 /* IP */ |
| #define ETHERTYPE_ARP 0x0806 /* Address resolution */ |
| #define ETHERTYPE_REVARP 0x8035 /* Reverse ARP */ |
| #define ETHERTYPE_AT 0x809B /* AppleTalk protocol */ |
| #define ETHERTYPE_AARP 0x80F3 /* AppleTalk ARP */ |
| #define ETHERTYPE_VLAN 0x8100 /* IEEE 802.1Q VLAN tagging */ |
| #define ETHERTYPE_IPX 0x8137 /* IPX */ |
| #define ETHERTYPE_IPV6 0x86dd /* IP protocol version 6 */ |
| #define ETHERTYPE_LOOPBACK 0x9000 /* used to test interfaces */ |
| |
| |
| #define ETHER_ADDR_LEN ETH_ALEN /* size of ethernet addr */ |
| #define ETHER_TYPE_LEN 2 /* bytes in type field */ |
| #define ETHER_CRC_LEN 4 /* bytes in CRC field */ |
| #define ETHER_HDR_LEN ETH_HLEN /* total octets in header */ |
| #define ETHER_MIN_LEN (ETH_ZLEN + ETHER_CRC_LEN) /* min packet length */ |
| #define ETHER_MAX_LEN (ETH_FRAME_LEN + ETHER_CRC_LEN) /* max packet length */ |
| |
| /* make sure ethenet length is valid */ |
| #define ETHER_IS_VALID_LEN(foo) \ |
| ((foo) >= ETHER_MIN_LEN && (foo) <= ETHER_MAX_LEN) |
| |
| /* |
| * 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 ETH_DATA_LEN |
| #define ETHERMIN (ETHER_MIN_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN) |
| |
| __END_DECLS |
| |
| #endif /* net/ethernet.h */ |