xref: /freebsd/sys/net/ethernet.h (revision e4b54c028f7fd787e37efd18c34ba0f5bfb21598) 
1e4b54c02SPoul-Henning Kamp /*
2e4b54c02SPoul-Henning Kamp  * Fundamental constants relating to ethernet.
3e4b54c02SPoul-Henning Kamp  *
4e4b54c02SPoul-Henning Kamp  * $Id$
5e4b54c02SPoul-Henning Kamp  *
6e4b54c02SPoul-Henning Kamp  */
7e4b54c02SPoul-Henning Kamp 
8e4b54c02SPoul-Henning Kamp #define	ETHER_ADDR_LEN		6
9e4b54c02SPoul-Henning Kamp #define ETHER_TYPE_LEN		2
10e4b54c02SPoul-Henning Kamp #define	ETHER_CRC_LENGTH	4
11e4b54c02SPoul-Henning Kamp #define	ETHER_HDR_SIZE		(ETHER_ADDR_LEN*2+ETHER_TYPE_LEN)
12e4b54c02SPoul-Henning Kamp #define ETHER_MIN_LEN		64
13e4b54c02SPoul-Henning Kamp #define ETHER_MAX_LEN		1518
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