Home | History | Annotate | Line # | Download | only in rbootd 
      1 /*	$NetBSD: rmp.h,v 1.6 2011/02/08 20:20:28 rmind Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988, 1992 The University of Utah and the Center
      5  *	for Software Science (CSS).
      6  * Copyright (c) 1992, 1993
      7  *	The Regents of the University of California.  All rights reserved.
      8  *
      9  * This code is derived from software contributed to Berkeley by
     10  * the Center for Software Science of the University of Utah Computer
     11  * Science Department.  CSS requests users of this software to return
     12  * to css-dist (at) cs.utah.edu any improvements that they make and grant
     13  * CSS redistribution rights.
     14  *
     15  * Redistribution and use in source and binary forms, with or without
     16  * modification, are permitted provided that the following conditions
     17  * are met:
     18  * 1. Redistributions of source code must retain the above copyright
     19  *    notice, this list of conditions and the following disclaimer.
     20  * 2. Redistributions in binary form must reproduce the above copyright
     21  *    notice, this list of conditions and the following disclaimer in the
     22  *    documentation and/or other materials provided with the distribution.
     23  * 3. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *	from: @(#)rmp.h	8.1 (Berkeley) 6/4/93
     40  *
     41  * From: Utah Hdr: rmp.h 3.1 92/07/06
     42  * Author: Jeff Forys, University of Utah CSS
     43  */
     44 
     45 /*
     46  *  Define MIN/MAX sizes of RMP (ethernet) packet.
     47  *  For ease of computation, the 4 octet CRC field is not included.
     48  *
     49  *  MCLBYTES is for bpfwrite(); it is adamant about using a cluster.
     50  */
     51 
     52 #define	RMP_MAX_PACKET	MIN(1514,MCLBYTES)
     53 #define	RMP_MIN_PACKET	60
     54 
     55 /*
     56  *  Define RMP/Ethernet Multicast address (9:0:9:0:0:4) and its length.
     57  */
     58 #define	RMP_ADDR	{ 0x9, 0x0, 0x9, 0x0, 0x0, 0x4 }
     59 #define	RMP_ADDRLEN	6
     60 
     61 /*
     62  *  Define IEEE802.2 (Logical Link Control) information.
     63  */
     64 #define	IEEE_DSAP_HP	0xF8	/* Destination Service Access Point */
     65 #define	IEEE_SSAP_HP	0xF8	/* Source Service Access Point */
     66 #define	IEEE_CNTL_HP	0x0300	/* Type 1 / I format control information */
     67 
     68 #define	HPEXT_DXSAP	0x608	/* HP Destination Service Access Point */
     69 #define	HPEXT_SXSAP	0x609	/* HP Source Service Access Point */
     70 
     71 /*
     72  *  802.3-style "Ethernet" header.
     73  */
     74 
     75 struct hp_hdr {
     76 	u_int8_t	daddr[RMP_ADDRLEN];
     77 	u_int8_t	saddr[RMP_ADDRLEN];
     78 	u_int16_t	len;
     79 };
     80 
     81 /*
     82  * HP uses 802.2 LLC with their own local extensions.  This struct makes
     83  * sense out of this data (encapsulated in the above 802.3 packet).
     84  */
     85 
     86 struct hp_llc {
     87 	u_int8_t	dsap;		/* 802.2 DSAP */
     88 	u_int8_t	ssap;		/* 802.2 SSAP */
     89 	u_int16_t	cntrl;		/* 802.2 control field */
     90 	u_int16_t	filler;		/* HP filler (must be zero) */
     91 	u_int16_t	dxsap;		/* HP extended DSAP */
     92 	u_int16_t	sxsap;		/* HP extended SSAP */
     93 };
     94