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diff --git a/libexec/rbootd/rmp.h b/libexec/rbootd/rmp.h
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+/*
+ * Copyright (c) 1988, 1992 The University of Utah and the Center
+ *	for Software Science (CSS).
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Center for Software Science of the University of Utah Computer
+ * Science Department.  CSS requests users of this software to return
+ * to css-dist@cs.utah.edu any improvements that they make and grant
+ * CSS redistribution rights.
+ *
+ * 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.
+ *
+ *	@(#)rmp.h	8.1 (Berkeley) 6/4/93
+ *
+ * Utah $Hdr: rmp.h 3.1 92/07/06$
+ * Author: Jeff Forys, University of Utah CSS
+ */
+
+/*
+ *  Define MIN/MAX sizes of RMP (ethernet) packet.
+ *  For ease of computation, the 4 octet CRC field is not included.
+ *
+ *  MCLBYTES is for bpfwrite(); it is adamant about using a cluster.
+ */
+
+#define	RMP_MAX_PACKET	MIN(1514,MCLBYTES)
+#define	RMP_MIN_PACKET	60
+
+/*
+ *  Define RMP/Ethernet Multicast address (9:0:9:0:0:4) and its length.
+ */
+#define	RMP_ADDR	{ 0x9, 0x0, 0x9, 0x0, 0x0, 0x4 }
+#define	RMP_ADDRLEN	6
+
+/*
+ *  Define IEEE802.2 (Logical Link Control) information.
+ */
+#define	IEEE_DSAP_HP	0xF8	/* Destination Service Access Point */
+#define	IEEE_SSAP_HP	0xF8	/* Source Service Access Point */
+#define	IEEE_CNTL_HP	0x0300	/* Type 1 / I format control information */
+
+#define	HPEXT_DXSAP	0x608	/* HP Destination Service Access Point */
+#define	HPEXT_SXSAP	0x609	/* HP Source Service Access Point */
+
+/*
+ *  802.3-style "Ethernet" header.
+ */
+
+struct hp_hdr {
+	u_char	daddr[RMP_ADDRLEN];
+	u_char	saddr[RMP_ADDRLEN];
+	u_short	len;
+};
+
+/*
+ * HP uses 802.2 LLC with their own local extensions.  This struct makes
+ * sence out of this data (encapsulated in the above 802.3 packet).
+ */
+
+struct hp_llc {
+	u_char	dsap;		/* 802.2 DSAP */
+	u_char	ssap;		/* 802.2 SSAP */
+	u_short	cntrl;		/* 802.2 control field */
+	u_short	filler;		/* HP filler (must be zero) */
+	u_short	dxsap;		/* HP extended DSAP */
+	u_short	sxsap;		/* HP extended SSAP */
+};