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rmp.h revision 1.2 
      1 /*
      2  * Copyright (c) 1988, 1992 The University of Utah and the Center
      3  *	for Software Science (CSS).
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Center for Software Science of the University of Utah Computer
      9  * Science Department.  CSS requests users of this software to return
     10  * to css-dist (at) cs.utah.edu any improvements that they make and grant
     11  * CSS redistribution rights.
     12  *
     13  * Redistribution and use in source and binary forms, with or without
     14  * modification, are permitted provided that the following conditions
     15  * are met:
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice, this list of conditions and the following disclaimer.
     18  * 2. Redistributions in binary form must reproduce the above copyright
     19  *    notice, this list of conditions and the following disclaimer in the
     20  *    documentation and/or other materials provided with the distribution.
     21  * 3. All advertising materials mentioning features or use of this software
     22  *    must display the following acknowledgement:
     23  *	This product includes software developed by the University of
     24  *	California, Berkeley and its contributors.
     25  * 4. Neither the name of the University nor the names of its contributors
     26  *    may be used to endorse or promote products derived from this software
     27  *    without specific prior written permission.
     28  *
     29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     39  * SUCH DAMAGE.
     40  *
     41  *	from: @(#)rmp.h	8.1 (Berkeley) 6/4/93
     42  *	      $Id: rmp.h,v 1.2 1994/01/11 16:41:49 brezak Exp $
     43  *
     44  * From: Utah Hdr: rmp.h 3.1 92/07/06
     45  * Author: Jeff Forys, University of Utah CSS
     46  */
     47 
     48 /*
     49  *  Define MIN/MAX sizes of RMP (ethernet) packet.
     50  *  For ease of computation, the 4 octet CRC field is not included.
     51  *
     52  *  MCLBYTES is for bpfwrite(); it is adamant about using a cluster.
     53  */
     54 
     55 #define	RMP_MAX_PACKET	MIN(1514,MCLBYTES)
     56 #define	RMP_MIN_PACKET	60
     57 
     58 /*
     59  *  Define RMP/Ethernet Multicast address (9:0:9:0:0:4) and its length.
     60  */
     61 #define	RMP_ADDR	{ 0x9, 0x0, 0x9, 0x0, 0x0, 0x4 }
     62 #define	RMP_ADDRLEN	6
     63 
     64 /*
     65  *  Define IEEE802.2 (Logical Link Control) information.
     66  */
     67 #define	IEEE_DSAP_HP	0xF8	/* Destination Service Access Point */
     68 #define	IEEE_SSAP_HP	0xF8	/* Source Service Access Point */
     69 #define	IEEE_CNTL_HP	0x0300	/* Type 1 / I format control information */
     70 
     71 #define	HPEXT_DXSAP	0x608	/* HP Destination Service Access Point */
     72 #define	HPEXT_SXSAP	0x609	/* HP Source Service Access Point */
     73 
     74 /*
     75  *  802.3-style "Ethernet" header.
     76  */
     77 
     78 struct hp_hdr {
     79 	u_char	daddr[RMP_ADDRLEN];
     80 	u_char	saddr[RMP_ADDRLEN];
     81 	u_short	len;
     82 };
     83 
     84 /*
     85  * HP uses 802.2 LLC with their own local extensions.  This struct makes
     86  * sence out of this data (encapsulated in the above 802.3 packet).
     87  */
     88 
     89 struct hp_llc {
     90 	u_char	dsap;		/* 802.2 DSAP */
     91 	u_char	ssap;		/* 802.2 SSAP */
     92 	u_short	cntrl;		/* 802.2 control field */
     93 	u_short	filler;		/* HP filler (must be zero) */
     94 	u_short	dxsap;		/* HP extended DSAP */
     95 	u_short	sxsap;		/* HP extended SSAP */
     96 };
     97