--- /dev/null
+/*!\file net/if_arc.h
+ * ARC-net definitions.
+ */
+
+/* $NetBSD: if_arc.h,v 1.6 1997/03/15 18:12:30 is Exp $ */
+
+/*
+ * Copyright (c) 1982, 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.
+ *
+ * from: NetBSD: if_ether.h,v 1.10 1994/06/29 06:37:55 cgd Exp
+ * @(#)if_ether.h 8.1 (Berkeley) 6/10/93
+ */
+
+#ifndef __NET_IF_ARC_H
+#define __NET_IF_ARC_H
+
+#include <sys/packon.h>
+
+/*
+ * Arcnet address - 1 octets
+ * don't know who uses this.
+ */
+struct arc_addr {
+ u_int8_t arc_addr_octet[1];
+};
+
+/*
+ * Structure of a 2.5MB/s Arcnet header.
+ * as given to interface code.
+ */
+struct arc_header {
+ u_int8_t arc_shost;
+ u_int8_t arc_dhost;
+ u_int8_t arc_type;
+ /*
+ * only present for newstyle encoding with LL fragmentation.
+ * Don't use sizeof(anything), use ARC_HDR{,NEW}LEN instead.
+ */
+ u_int8_t arc_flag;
+ u_int16_t arc_seqid;
+
+ /*
+ * only present in exception packets (arc_flag == 0xff)
+ */
+ u_int8_t arc_type2; /* same as arc_type */
+ u_int8_t arc_flag2; /* real flag value */
+ u_int16_t arc_seqid2; /* real seqid value */
+};
+
+#define ARC_ADDR_LEN 1
+
+#define ARC_HDRLEN 3
+#define ARC_HDRNEWLEN 6
+
+/* these lengths are data link layer length - 2*ARC_ADDR_LEN */
+#define ARC_MIN_LEN 1
+#define ARC_MIN_FORBID_LEN 254
+#define ARC_MAX_FORBID_LEN 256
+#define ARC_MAX_LEN 508
+
+
+/* RFC 1051 */
+#define ARCTYPE_IP_OLD 240 /* IP protocol */
+#define ARCTYPE_ARP_OLD 241 /* address resolution protocol */
+
+/* RFC 1201 */
+#define ARCTYPE_IP 212 /* IP protocol */
+#define ARCTYPE_ARP 213 /* address resolution protocol */
+#define ARCTYPE_REVARP 214 /* reverse addr resolution protocol */
+
+#define ARCTYPE_ATALK 221 /* Appletalk */
+#define ARCTYPE_BANIAN 247 /* Banyan Vines */
+#define ARCTYPE_IPX 250 /* Novell IPX */
+
+#define ARCMTU 507
+#define ARCMIN 0
+
+struct arccom {
+ struct ifnet ac_if; /* network-visible interface */
+
+ u_int16_t ac_seqid; /* seq. id used by PHDS encap. */
+
+ struct ac_frag {
+ u_int8_t af_maxflag; /* from first packet */
+ u_int8_t af_lastseen; /* last split flag seen */
+ u_int16_t af_seqid;
+ struct mbuf *af_packet;
+ } ac_fragtab[256]; /* indexed by sender ll address */
+
+};
+
+#include <sys/packoff.h>
+
+#endif
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