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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 the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, 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'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * @(#)if_ether.h 7.3 (Berkeley) 6/29/88 plus MULTICAST 1.0
- *
- * HISTORY
- * 11-Jul-93 Mac Gillon (mgillon) at NeXT
- * Integrated MULTICAST support
- *
- * 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-85 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 */
- struct ether_multi *ac_multiaddrs; /* list of ether multicast addrs */
- };
-
- /*
- * 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; /* one element packet buffering */
- struct ifnet *at_if; /* interface (CS_INET) */
- };
-
- #ifdef KERNEL
- u_char etherbroadcastaddr[6];
- struct arptab *arptnew();
- char *ether_sprintf();
- #endif
-
- /*
- * Ethernet multicast address structure. There is one of these for each
- * multicast address or range of multicast addresses that we are supposed
- * to listen to on a particular interface. They are kept in a linked list,
- * rooted in the interface's arpcom structure. (This really has nothing to
- * do with ARP, or with the Internet address family, but this appears to be
- * the minimally-disrupting place to put it.)
- */
- struct ether_multi {
- u_char enm_addrlo[6]; /* low or only address of range */
- u_char enm_addrhi[6]; /* high or only address of range */
- struct arpcom *enm_ac; /* back pointer to arpcom */
- u_int enm_refcount; /* no. claims to this addr/range */
- struct ether_multi *enm_next; /* ptr to next ether_multi */
- };
-
- #ifdef KERNEL
- /*
- * Structure used by macros below to remember position when stepping through
- * all of the ether_multi records.
- */
- struct ether_multistep {
- struct ether_multi *e_enm;
- };
-
- /*
- * Macro for looking up the ether_multi record for a given range of Ethernet
- * multicast addresses connected to a given arpcom structure. If no matching
- * record is found, "enm" returns NULL.
- */
- #define ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm) \
- /* u_char addrlo[6]; */ \
- /* u_char addrhi[6]; */ \
- /* struct arpcom *ac; */ \
- /* struct ether_multi *enm; */ \
- { \
- for ((enm) = (ac)->ac_multiaddrs; \
- (enm) != NULL && \
- (bcmp((enm)->enm_addrlo, (addrlo), 6) != 0 || \
- bcmp((enm)->enm_addrhi, (addrhi), 6) != 0); \
- (enm) = (enm)->enm_next); \
- }
-
- /*
- * Macro to step through all of the ether_multi records, one at a time.
- * The current position is remembered in "step", which the caller must
- * provide. ETHER_FIRST_MULTI(), below, must be called to initialize "step"
- * and get the first record. Both macros return a NULL "enm" when there
- * are no remaining records.
- */
- #define ETHER_NEXT_MULTI(step, enm) \
- /* struct ether_multistep step; */ \
- /* struct ether_multi *enm; */ \
- { \
- if (((enm) = (step).e_enm) != NULL) \
- (step).e_enm = (enm)->enm_next; \
- }
-
- #define ETHER_FIRST_MULTI(step, ac, enm) \
- /* struct ether_multistep step; */ \
- /* struct arpcom *ac; */ \
- /* struct ether_multi *enm; */ \
- { \
- (step).e_enm = (ac)->ac_multiaddrs; \
- ETHER_NEXT_MULTI((step), (enm)); \
- }
- #endif KERNEL
-
-