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| 1 | /* Copyright (C) 1997-2024 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <https://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #ifndef _NET_IF_ETHER_H |
| 19 | #define _NET_IF_ETHER_H 1 |
| 20 | |
| 21 | /* |
| 22 | * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble |
| 23 | * and FCS/CRC (frame check sequence). |
| 24 | */ |
| 25 | |
| 26 | #define ETH_ALEN 6 /* Octets in one ethernet addr */ |
| 27 | #define ETH_HLEN 14 /* Total octets in header. */ |
| 28 | #define ETH_ZLEN 60 /* Min. octets in frame sans FCS */ |
| 29 | #define ETH_DATA_LEN 1500 /* Max. octets in payload */ |
| 30 | #define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */ |
| 31 | |
| 32 | /* |
| 33 | * These are the defined Ethernet Protocol ID's. |
| 34 | */ |
| 35 | |
| 36 | #define ETH_P_LOOP 0x0060 /* Ethernet Loopback packet */ |
| 37 | #define ETH_P_ECHO 0x0200 /* Ethernet Echo packet */ |
| 38 | #define ETH_P_PUP 0x0400 /* Xerox PUP packet */ |
| 39 | #define ETH_P_IP 0x0800 /* Internet Protocol packet */ |
| 40 | #define ETH_P_X25 0x0805 /* CCITT X.25 */ |
| 41 | #define ETH_P_ARP 0x0806 /* Address Resolution packet */ |
| 42 | #define ETH_P_BPQ 0x08FF /* G8BPQ AX.25 Ethernet Packet [ NOT AN OFFICIALLY REGISTERED ID ] */ |
| 43 | #define ETH_P_DEC 0x6000 /* DEC Assigned proto */ |
| 44 | #define ETH_P_DNA_DL 0x6001 /* DEC DNA Dump/Load */ |
| 45 | #define ETH_P_DNA_RC 0x6002 /* DEC DNA Remote Console */ |
| 46 | #define ETH_P_DNA_RT 0x6003 /* DEC DNA Routing */ |
| 47 | #define ETH_P_LAT 0x6004 /* DEC LAT */ |
| 48 | #define ETH_P_DIAG 0x6005 /* DEC Diagnostics */ |
| 49 | #define ETH_P_CUST 0x6006 /* DEC Customer use */ |
| 50 | #define ETH_P_SCA 0x6007 /* DEC Systems Comms Arch */ |
| 51 | #define ETH_P_RARP 0x8035 /* Reverse Addr Res packet */ |
| 52 | #define ETH_P_ATALK 0x809B /* Appletalk DDP */ |
| 53 | #define ETH_P_AARP 0x80F3 /* Appletalk AARP */ |
| 54 | #define ETH_P_IPX 0x8137 /* IPX over DIX */ |
| 55 | #define ETH_P_IPV6 0x86DD /* IPv6 over bluebook */ |
| 56 | |
| 57 | /* |
| 58 | * Non DIX types. Won't clash for 1500 types. |
| 59 | */ |
| 60 | |
| 61 | #define ETH_P_802_3 0x0001 /* Dummy type for 802.3 frames */ |
| 62 | #define ETH_P_AX25 0x0002 /* Dummy protocol id for AX.25 */ |
| 63 | #define ETH_P_ALL 0x0003 /* Every packet (be careful!!!) */ |
| 64 | #define ETH_P_802_2 0x0004 /* 802.2 frames */ |
| 65 | #define ETH_P_SNAP 0x0005 /* Internal only */ |
| 66 | #define ETH_P_DDCMP 0x0006 /* DEC DDCMP: Internal only */ |
| 67 | #define ETH_P_WAN_PPP 0x0007 /* Dummy type for WAN PPP frames*/ |
| 68 | #define ETH_P_PPP_MP 0x0008 /* Dummy type for PPP MP frames */ |
| 69 | #define ETH_P_LOCALTALK 0x0009 /* Localtalk pseudo type */ |
| 70 | #define ETH_P_PPPTALK 0x0010 /* Dummy type for Atalk over PPP*/ |
| 71 | #define ETH_P_TR_802_2 0x0011 /* 802.2 frames */ |
| 72 | |
| 73 | /* |
| 74 | * This is an Ethernet frame header. |
| 75 | */ |
| 76 | |
| 77 | struct ethhdr |
| 78 | { |
| 79 | unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ |
| 80 | unsigned char h_source[ETH_ALEN]; /* source ether addr */ |
| 81 | unsigned short int h_proto; /* packet type ID field */ |
| 82 | }; |
| 83 | |
| 84 | #endif /* net/if_ether.h */ |
| 85 |
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