rbootd.tproj/rmp.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1988, 1992 The University of Utah and the Center
  26  *      for Software Science (CSS).
  27  * Copyright (c) 1992, 1993
  28  *      The Regents of the University of California.  All rights reserved.
  29  *
  30  * This code is derived from software contributed to Berkeley by
  31  * the Center for Software Science of the University of Utah Computer
  32  * Science Department.  CSS requests users of this software to return
  33  * to css-dist@cs.utah.edu any improvements that they make and grant
  34  * CSS redistribution rights.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)rmp.h       8.1 (Berkeley) 6/4/93
  65  *
  66  * Utah $Hdr: rmp.h 3.1 92/07/06$
  67  * Author: Jeff Forys, University of Utah CSS
  68  */
  69
  70 /*
  71  *  Define MIN/MAX sizes of RMP (ethernet) packet.
  72  *  For ease of computation, the 4 octet CRC field is not included.
  73  *
  74  *  MCLBYTES is for bpfwrite(); it is adamant about using a cluster.
  75  */
  76
  77 #define RMP_MAX_PACKET  MIN(1514,MCLBYTES)
  78 #define RMP_MIN_PACKET  60
  79
  80 /*
  81  *  Define RMP/Ethernet Multicast address (9:0:9:0:0:4) and its length.
  82  */
  83 #define RMP_ADDR        { 0x9, 0x0, 0x9, 0x0, 0x0, 0x4 }
  84 #define RMP_ADDRLEN     6
  85
  86 /*
  87  *  Define IEEE802.2 (Logical Link Control) information.
  88  */
  89 #define IEEE_DSAP_HP    0xF8    /* Destination Service Access Point */
  90 #define IEEE_SSAP_HP    0xF8    /* Source Service Access Point */
  91 #define IEEE_CNTL_HP    0x0300  /* Type 1 / I format control information */
  92
  93 #define HPEXT_DXSAP     0x608   /* HP Destination Service Access Point */
  94 #define HPEXT_SXSAP     0x609   /* HP Source Service Access Point */
  95
  96 /*
  97  *  802.3-style "Ethernet" header.
  98  */
  99
 100 struct hp_hdr {
 101         u_char  daddr[RMP_ADDRLEN];
 102         u_char  saddr[RMP_ADDRLEN];
 103         u_short len;
 104 };
 105
 106 /*
 107  * HP uses 802.2 LLC with their own local extensions.  This struct makes
 108  * sence out of this data (encapsulated in the above 802.3 packet).
 109  */
 110
 111 struct hp_llc {
 112         u_char  dsap;           /* 802.2 DSAP */
 113         u_char  ssap;           /* 802.2 SSAP */
 114         u_short cntrl;          /* 802.2 control field */
 115         u_short filler;         /* HP filler (must be zero) */
 116         u_short dxsap;          /* HP extended DSAP */
 117         u_short sxsap;          /* HP extended SSAP */
 118 };