/*      $NetBSD: rmp.h,v 1.6 2011/02/08 20:20:28 rmind Exp $    */

/*
* 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 [email protected] 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. 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.
*
*      from: @(#)rmp.h 8.1 (Berkeley) 6/4/93
*
* From: 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_int8_t        daddr[RMP_ADDRLEN];
       u_int8_t        saddr[RMP_ADDRLEN];
       u_int16_t       len;
};

/*
* HP uses 802.2 LLC with their own local extensions.  This struct makes
* sense out of this data (encapsulated in the above 802.3 packet).
*/

struct hp_llc {
       u_int8_t        dsap;           /* 802.2 DSAP */
       u_int8_t        ssap;           /* 802.2 SSAP */
       u_int16_t       cntrl;          /* 802.2 control field */
       u_int16_t       filler;         /* HP filler (must be zero) */
       u_int16_t       dxsap;          /* HP extended DSAP */
       u_int16_t       sxsap;          /* HP extended SSAP */
};