ether.h

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/*
 * FILENAME: ether.h
 *
 * Copyright  2000 By InterNiche Technologies Inc. All rights reserved
 *
 * information common to all ethernet drivers
 *
 * MODULE: INET
 *
 *
 * PORTABLE: yes
 */

/* Additional Copyrights: */
/* Portions Copyright 1990, 1993 by NetPort Software. */
/* Portions Copyright 1986 by Carnegie Mellon */
/* Portions Copyright 1983, 1985 by the Massachusetts Institute of Technology */

#ifndef _ETHER_H_
#define  _ETHER_H_   1


/* initialization modes: 0 = rcv normal + broadcast packets */
#define     LOOPBACK    0x01  /* send packets in loopback mode */
#define     ALLPACK     0x02  /* receive all packets: promiscuous */
#define     MULTI       0x04  /* receive multicast packets */

/* ethernet packet header */

START_PACKED_STRUCT(ethhdr)
u_char   e_dst[6];
u_char   e_src[6];
unshort  e_type;
END_PACKED_STRUCT(ethhdr)

/* ETHHDR_SIZE - size of packet header structure for allocation 
 * purposes Note this is a default -- it should be overridden in 
 * ipport.h if the need arises. 
 */

#ifndef ETHHDR_SIZE
#define  ETHHDR_SIZE (sizeof(struct ethhdr))
#endif   /* ETHHDR_SIZE */

/* ETHHDR_BIAS - where to locate the struct ethhdr within the 
 * allocated space, as an offset from the start in bytes Note this is 
 * a default -- it should be overridden in ipport.h if the need 
 * arises. 
 */

#ifndef  ETHHDR_BIAS
#define  ETHHDR_BIAS 0
#endif   /* ETHHDR_BIAS */

/* minimum & maximun length legal ethernet packet sizes */
#define     ET_MINLEN   60
#define     ET_MAXLEN   1514
#define     MINTU       60
#define     MTU         1514

extern   unsigned char  ETBROADCAST[];

#endif   /* _ETHER_H_ */