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if_ether.h
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1992-07-29
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/*
* Mach Operating System
* Copyright (c) 1987 Carnegie-Mellon University
* All rights reserved. The CMU software License Agreement specifies
* the terms and conditions for use and redistribution.
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of California at Berkeley. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*
* @(#)if_ether.h 7.2 (Berkeley) 12/7/87
*
* HISTORY
* 09-Apr-90 Bradley Taylor (btaylor) at NeXT, Inc.
* Move Ethernet definitions to <net/etherdefs.h>. Leave arp stuff here.
*
* 20-Oct-87 Peter King (king) at NeXT, Inc.
* SUN_RPC: Add definition for ether_addr. Add RARP support.
*
* 25-Jan-86 Avadis Tevanian (avie) at Carnegie-Mellon University
* Upgraded to 4.3.
*
* 15-Aug@ Mike Accetta (mja) at Carnegie-Mellon University
* CS_INET: added ac_if field to arptab definition to allow
* multiple interfaces to co-exist.
* [V1(1)]
*/
/* @(#)if_ether.h 2.1 88/05/18 4.0NFSSRC SMI; from UCB 7.1 6/5/86 */
#import <net/etherdefs.h>
/*
* Ethernet Address Resolution Protocol.
*
* See RFC 826 for protocol description. Structure below is adapted
* to resolving internet addresses. Field names used correspond to
* RFC 826.
*/
struct ether_arp {
struct arphdr ea_hdr; /* fixed-size header */
u_char arp_sha[6]; /* sender hardware address */
u_char arp_spa[4]; /* sender protocol address */
u_char arp_tha[6]; /* target hardware address */
u_char arp_tpa[4]; /* target protocol address */
};
#define arp_hrd ea_hdr.ar_hrd
#define arp_pro ea_hdr.ar_pro
#define arp_hln ea_hdr.ar_hln
#define arp_pln ea_hdr.ar_pln
#define arp_op ea_hdr.ar_op
/*
* Structure shared between the ethernet driver modules and
* the address resolution code. For example, each ec_softc or il_softc
* begins with this structure.
*/
struct arpcom {
struct ifnet ac_if; /* network-visible interface */
u_char ac_enaddr[6]; /* ethernet hardware address */
struct in_addr ac_ipaddr; /* copy of ip address- XXX */
};
/*
* Internet to ethernet address resolution table.
*/
struct arptab {
struct in_addr at_iaddr; /* internet address */
u_char at_enaddr[6]; /* ethernet address */
u_char at_timer; /* minutes since last reference */
u_char at_flags; /* flags */
struct mbuf *at_hold; /* last packet until resolved/timeout */
struct ifnet *at_if; /* interface (CS_INET) */
};
#ifdef KERNEL
u_char etherbroadcastaddr[6];
struct arptab *arptnew();
char *ether_sprintf();
#endif