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@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 * $FreeBSD$ 43 */ 44 45 /* 46 * Define MIN/MAX sizes of RMP (ethernet) packet. 47 * For ease of computation, the 4 octet CRC field is not included. 48 * 49 * MCLBYTES is for bpfwrite(); it is adamant about using a cluster. 50 */ 51 52 #define RMP_MAX_PACKET MIN(1514,MCLBYTES) 53 #define RMP_MIN_PACKET 60 54 55 /* 56 * Define RMP/Ethernet Multicast address (9:0:9:0:0:4) and its length. 57 */ 58 #define RMP_ADDR { 0x9, 0x0, 0x9, 0x0, 0x0, 0x4 } 59 #define RMP_ADDRLEN 6 60 61 /* 62 * Define IEEE802.2 (Logical Link Control) information. 63 */ 64 #define IEEE_DSAP_HP 0xF8 /* Destination Service Access Point */ 65 #define IEEE_SSAP_HP 0xF8 /* Source Service Access Point */ 66 #define IEEE_CNTL_HP 0x0300 /* Type 1 / I format control information */ 67 68 #define HPEXT_DXSAP 0x608 /* HP Destination Service Access Point */ 69 #define HPEXT_SXSAP 0x609 /* HP Source Service Access Point */ 70 71 /* 72 * 802.3-style "Ethernet" header. 73 */ 74 75 struct hp_hdr { 76 u_int8_t daddr[RMP_ADDRLEN]; 77 u_int8_t saddr[RMP_ADDRLEN]; 78 u_int16_t len; 79 }; 80 81 /* 82 * HP uses 802.2 LLC with their own local extensions. This struct makes 83 * sense out of this data (encapsulated in the above 802.3 packet). 84 */ 85 86 struct hp_llc { 87 u_int8_t dsap; /* 802.2 DSAP */ 88 u_int8_t ssap; /* 802.2 SSAP */ 89 u_int16_t cntrl; /* 802.2 control field */ 90 u_int16_t filler; /* HP filler (must be zero) */ 91 u_int16_t dxsap; /* HP extended DSAP */ 92 u_int16_t sxsap; /* HP extended SSAP */ 93 }; 94