| Junxiao Shi | 2222a61 | 2015-06-06 08:01:38 -0700 | [diff] [blame^] | 1 | /* @(#) $Header: /tcpdump/master/tcpdump/ether.h,v 1.8 2002-12-11 07:13:51 guy Exp $ (LBL) */ |
| 2 | /* |
| 3 | * Copyright (c) 1982, 1986, 1993 |
| 4 | * The Regents of the University of California. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by the University of |
| 17 | * California, Berkeley and its contributors. |
| 18 | * 4. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 |
| 35 | */ |
| 36 | |
| 37 | #define ETHERMTU 1500 |
| 38 | |
| 39 | /* |
| 40 | * The number of bytes in an ethernet (MAC) address. |
| 41 | */ |
| 42 | #define ETHER_ADDR_LEN 6 |
| 43 | |
| 44 | /* |
| 45 | * Structure of a DEC/Intel/Xerox or 802.3 Ethernet header. |
| 46 | */ |
| 47 | struct ether_header { |
| 48 | u_int8_t ether_dhost[ETHER_ADDR_LEN]; |
| 49 | u_int8_t ether_shost[ETHER_ADDR_LEN]; |
| 50 | u_int16_t ether_type; |
| 51 | }; |
| 52 | |
| 53 | /* |
| 54 | * Length of a DEC/Intel/Xerox or 802.3 Ethernet header; note that some |
| 55 | * compilers may pad "struct ether_header" to a multiple of 4 bytes, |
| 56 | * for example, so "sizeof (struct ether_header)" may not give the right |
| 57 | * answer. |
| 58 | */ |
| 59 | #define ETHER_HDRLEN 14 |