usr.sbin/rbootd/rmp.h

   1 /*      $NetBSD: rmp.h,v 1.4 1995/10/06 05:12:18 thorpej Exp $  */
   2
   3 /*
   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@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. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  *
  37  *      from: @(#)rmp.h 8.1 (Berkeley) 6/4/93
  38  *
  39  * From: Utah Hdr: rmp.h 3.1 92/07/06
  40  * Author: Jeff Forys, University of Utah CSS
  41  */
  42
  43 /*
  44  * Copyright (c) 1988, 1992 The University of Utah and the Center
  45  *      for Software Science (CSS).
  46  *
  47  * This code is derived from software contributed to Berkeley by
  48  * the Center for Software Science of the University of Utah Computer
  49  * Science Department.  CSS requests users of this software to return
  50  * to css-dist@cs.utah.edu any improvements that they make and grant
  51  * CSS redistribution rights.
  52  *
  53  * Redistribution and use in source and binary forms, with or without
  54  * modification, are permitted provided that the following conditions
  55  * are met:
  56  * 1. Redistributions of source code must retain the above copyright
  57  *    notice, this list of conditions and the following disclaimer.
  58  * 2. Redistributions in binary form must reproduce the above copyright
  59  *    notice, this list of conditions and the following disclaimer in the
  60  *    documentation and/or other materials provided with the distribution.
  61  * 3. All advertising materials mentioning features or use of this software
  62  *    must display the following acknowledgement:
  63  *      This product includes software developed by the University of
  64  *      California, Berkeley and its contributors.
  65  * 4. Neither the name of the University nor the names of its contributors
  66  *    may be used to endorse or promote products derived from this software
  67  *    without specific prior written permission.
  68  *
  69  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  70  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  71  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  72  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  73  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  74  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  75  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  76  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  77  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  78  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  79  * SUCH DAMAGE.
  80  *
  81  *      from: @(#)rmp.h 8.1 (Berkeley) 6/4/93
  82  *
  83  * From: Utah Hdr: rmp.h 3.1 92/07/06
  84  * Author: Jeff Forys, University of Utah CSS
  85  */
  86
  87 /*
  88  *  Define MIN/MAX sizes of RMP (ethernet) packet.
  89  *  For ease of computation, the 4 octet CRC field is not included.
  90  *
  91  *  MCLBYTES is for bpfwrite(); it is adamant about using a cluster.
  92  */
  93
  94 #define RMP_MAX_PACKET  MIN(1514,MCLBYTES)
  95 #define RMP_MIN_PACKET  60
  96
  97 /*
  98  *  Define RMP/Ethernet Multicast address (9:0:9:0:0:4) and its length.
  99  */
 100 #define RMP_ADDR        { 0x9, 0x0, 0x9, 0x0, 0x0, 0x4 }
 101 #define RMP_ADDRLEN     6
 102
 103 /*
 104  *  Define IEEE802.2 (Logical Link Control) information.
 105  */
 106 #define IEEE_DSAP_HP    0xF8    /* Destination Service Access Point */
 107 #define IEEE_SSAP_HP    0xF8    /* Source Service Access Point */
 108 #define IEEE_CNTL_HP    0x0300  /* Type 1 / I format control information */
 109
 110 #define HPEXT_DXSAP     0x608   /* HP Destination Service Access Point */
 111 #define HPEXT_SXSAP     0x609   /* HP Source Service Access Point */
 112
 113 /*
 114  *  802.3-style "Ethernet" header.
 115  */
 116
 117 struct hp_hdr {
 118         u_int8_t        daddr[RMP_ADDRLEN];
 119         u_int8_t        saddr[RMP_ADDRLEN];
 120         u_int16_t       len;
 121 };
 122
 123 /*
 124  * HP uses 802.2 LLC with their own local extensions.  This struct makes
 125  * sense out of this data (encapsulated in the above 802.3 packet).
 126  */
 127
 128 struct hp_llc {
 129         u_int8_t        dsap;           /* 802.2 DSAP */
 130         u_int8_t        ssap;           /* 802.2 SSAP */
 131         u_int16_t       cntrl;          /* 802.2 control field */
 132         u_int16_t       filler;         /* HP filler (must be zero) */
 133         u_int16_t       dxsap;          /* HP extended DSAP */
 134         u_int16_t       sxsap;          /* HP extended SSAP */
 135 };