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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * Copyright (c) 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)if_arp.h 8.1 (Berkeley) 6/10/93
- */
-
- #ifndef _NET_IF_ARP_H_
- #define _NET_IF_ARP_H_
-
- /*
- * Address Resolution Protocol.
- *
- * See RFC 826 for protocol description. ARP packets are variable
- * in size; the arphdr structure defines the fixed-length portion.
- * Protocol type values are the same as those for 10 Mb/s Ethernet.
- * It is followed by the variable-sized fields ar_sha, arp_spa,
- * arp_tha and arp_tpa in that order, according to the lengths
- * specified. Field names used correspond to RFC 826.
- */
- struct arphdr {
- u_short ar_hrd; /* format of hardware address */
- #define ARPHRD_ETHER 1 /* ethernet hardware format */
- #define ARPHRD_FRELAY 15 /* frame relay hardware format */
- u_short ar_pro; /* format of protocol address */
- u_char ar_hln; /* length of hardware address */
- u_char ar_pln; /* length of protocol address */
- u_short ar_op; /* one of: */
- #define ARPOP_REQUEST 1 /* request to resolve address */
- #define ARPOP_REPLY 2 /* response to previous request */
- #define ARPOP_REVREQUEST 3 /* request protocol address given hardware */
- #define ARPOP_REVREPLY 4 /* response giving protocol address */
- #define ARPOP_INVREQUEST 8 /* request to identify peer */
- #define ARPOP_INVREPLY 9 /* response identifying peer */
- /*
- * The remaining fields are variable in size,
- * according to the sizes above.
- */
- #ifdef COMMENT_ONLY
- u_char ar_sha[]; /* sender hardware address */
- u_char ar_spa[]; /* sender protocol address */
- u_char ar_tha[]; /* target hardware address */
- u_char ar_tpa[]; /* target protocol address */
- #endif
- };
-
- /*
- * ARP ioctl request
- */
- struct arpreq {
- struct sockaddr arp_pa; /* protocol address */
- struct sockaddr arp_ha; /* hardware address */
- int arp_flags; /* flags */
- };
- /* arp_flags and at_flags field values */
- #define ATF_INUSE 0x01 /* entry in use */
- #define ATF_COM 0x02 /* completed entry (enaddr valid) */
- #define ATF_PERM 0x04 /* permanent entry */
- #define ATF_PUBL 0x08 /* publish entry (respond for other host) */
- #define ATF_USETRAILERS 0x10 /* has requested trailers */
-
-
- /*
- * 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 */
- };
-
- /*
- * 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;
- };
-
- #ifdef KERNEL
- /*
- * 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 {
- /*
- * The ifnet struct _must_ be at the head of this structure.
- */
- 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 */
- int ac_multicnt; /* length of ac_multiaddrs list */
- };
-
-
- #endif
-
- #endif /* !_NET_IF_ARP_H_ */
-