usr/src/libexec/rbootd/rmp.h

/*
 * 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 css-dist@cs.utah.edu 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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.
 *
 *      @(#)rmp.h       8.1 (Berkeley) 6/4/93
 *
 * 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_char  daddr[RMP_ADDRLEN];
        u_char  saddr[RMP_ADDRLEN];
        u_short len;
};

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

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