/* * 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_var.h	8.1 (Berkeley) 6/4/93 * * Utah $Hdr: rmp_var.h 3.1 92/07/06$ * Author: Jeff Forys, University of Utah CSS *//* *  Possible values for "rmp_type" fields. */#define	RMP_BOOT_REQ	1	/* boot request packet */#define	RMP_BOOT_REPL	129	/* boot reply packet */#define	RMP_READ_REQ	2	/* read request packet */#define	RMP_READ_REPL	130	/* read reply packet */#define	RMP_BOOT_DONE	3	/* boot complete packet *//* *  Useful constants. */#define RMP_VERSION	2	/* protocol version */#define RMP_TIMEOUT	600	/* timeout connection after ten minutes */#define	RMP_PROBESID	0xffff	/* session ID for probes */#define	RMP_HOSTLEN	13	/* max length of server's name */#define	RMP_MACHLEN	20	/* length of machine type field *//* *  RMP error codes */#define	RMP_E_OKAY	0#define	RMP_E_EOF	2	/* read reply: returned end of file */#define	RMP_E_ABORT	3	/* abort operation */#define	RMP_E_BUSY	4	/* boot reply: server busy */#define	RMP_E_TIMEOUT	5	/* lengthen time out (not implemented) */#define	RMP_E_NOFILE	16	/* boot reply: file does not exist */#define RMP_E_OPENFILE	17	/* boot reply: file open failed */#define	RMP_E_NODFLT	18	/* boot reply: default file does not exist */#define RMP_E_OPENDFLT	19	/* boot reply: default file open failed */#define	RMP_E_BADSID	25	/* read reply: bad session ID */#define RMP_E_BADPACKET	27 	/* Bad packet detected *//* *  RMPDATALEN is the maximum number of data octets that can be stuffed *  into an RMP packet.  This excludes the 802.2 LLC w/HP extensions. */#define RMPDATALEN	(RMP_MAX_PACKET - (sizeof(struct hp_hdr) + \			                   sizeof(struct hp_llc)))/* *  Define sizes of packets we send.  Boot and Read replies are variable *  in length depending on the length of `s'. * *  Also, define how much space `restofpkt' can take up for outgoing *  Boot and Read replies.  Boot Request packets are effectively *  limited to 255 bytes due to the preceding 1-byte length field. */#define	RMPBOOTSIZE(s)	(sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \			 sizeof(struct rmp_boot_repl) + s - sizeof(restofpkt))#define	RMPREADSIZE(s)	(sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \			 sizeof(struct rmp_read_repl) + s - sizeof(restofpkt) \			 - sizeof(u_char))#define	RMPDONESIZE	(sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \			 sizeof(struct rmp_boot_done))#define	RMPBOOTDATA	255#define	RMPREADDATA	(RMPDATALEN - \			 (2*sizeof(u_char)+sizeof(u_short)+sizeof(u_word)))/* * This protocol defines some field sizes as "rest of ethernet packet". * There is no easy way to specify this in C, so we use a one character * field to denote it, and index past it to the end of the packet. */typedef char	restofpkt;/* * Due to the RMP packet layout, we'll run into alignment problems * on machines that cant access words on half-word boundaries.  If * you know that your machine does not suffer from this problem, * add it to the hp300 #define below. * * The following macros are used to deal with this problem: *	WORDZE(w)	Return True if u_word `w' is zero, False otherwise. *	ZEROWORD(w)	Set u_word `w' to zero. *	COPYWORD(w1,w2)	Copy u_word `w1' to `w2'. *	GETWORD(w,i)	Copy u_word `w' into int `i'. *	PUTWORD(i,w)	Copy int `i' into u_word `w'. * * N.B. We do not support little endian alignment-challenged machines. */#if defined(vax) || defined(tahoe) || defined(hp300)typedef	u_int		u_word;#define	WORDZE(w)	((w) == 0)#define	ZEROWORD(w)	(w) = 0#define	COPYWORD(w1,w2)	(w2) = (w1)#define	GETWORD(w, i)	(i) = (w)#define	PUTWORD(i, w)	(w) = (i)#else#define	_WORD_HIGHPART	0	/* XXX: assume Big Endian for now */#define	_WORD_LOWPART	1typedef	struct _uword { u_short val[2]; }	u_word;#define	WORDZE(w) \	((w.val[_WORD_HIGHPART] == 0) && (w.val[_WORD_LOWPART] == 0))#define	ZEROWORD(w) \	(w).val[_WORD_HIGHPART] = (w).val[_WORD_LOWPART] = 0#define	COPYWORD(w1, w2) \	{ (w2).val[_WORD_HIGHPART] = (w1).val[_WORD_HIGHPART]; \	  (w2).val[_WORD_LOWPART] = (w1).val[_WORD_LOWPART]; \	}#define	GETWORD(w, i) \	(i) = (((u_int)(w).val[_WORD_HIGHPART]) << 16) | (w).val[_WORD_LOWPART]#define	PUTWORD(i, w) \	{ (w).val[_WORD_HIGHPART] = (u_short) (((i) >> 16) & 0xffff); \	  (w).val[_WORD_LOWPART] = (u_short) (i & 0xffff); \	}#endif/* * Packet structures. */struct rmp_raw {		/* generic RMP packet */	u_char	rmp_type;		/* packet type */	u_char	rmp_rawdata[RMPDATALEN-1];};struct rmp_boot_req {		/* boot request */	u_char	rmp_type;		/* packet type (RMP_BOOT_REQ) */	u_char	rmp_retcode;		/* return code (0) */	u_word	rmp_seqno;		/* sequence number (real time clock) */	u_short	rmp_session;		/* session id (normally 0) */	u_short	rmp_version;		/* protocol version (RMP_VERSION) */	char	rmp_machtype[RMP_MACHLEN];	/* machine type */	u_char	rmp_flnmsize;		/* length of rmp_flnm */	restofpkt rmp_flnm;		/* name of file to be read */};struct rmp_boot_repl {		/* boot reply */	u_char	rmp_type;		/* packet type (RMP_BOOT_REPL) */	u_char	rmp_retcode;		/* return code (normally 0) */	u_word	rmp_seqno;		/* sequence number (from boot req) */	u_short	rmp_session;		/* session id (generated) */	u_short	rmp_version;		/* protocol version (RMP_VERSION) */	u_char	rmp_flnmsize;		/* length of rmp_flnm */	restofpkt rmp_flnm;		/* name of file (from boot req) */};struct rmp_read_req {		/* read request */	u_char	rmp_type;		/* packet type (RMP_READ_REQ) */	u_char	rmp_retcode;		/* return code (0) */	u_word	rmp_offset;		/* file relative byte offset */	u_short	rmp_session;		/* session id (from boot repl) */	u_short	rmp_size;		/* max no of bytes to send */};struct rmp_read_repl {		/* read reply */	u_char	rmp_type;		/* packet type (RMP_READ_REPL) */	u_char	rmp_retcode;		/* return code (normally 0) */	u_word	rmp_offset;		/* byte offset (from read req) */	u_short	rmp_session;		/* session id (from read req) */	restofpkt rmp_data;		/* data (max size from read req) */	u_char	rmp_unused;		/* padding to 16-bit boundary */};struct rmp_boot_done {		/* boot complete */	u_char	rmp_type;		/* packet type (RMP_BOOT_DONE) */	u_char	rmp_retcode;		/* return code (0) */	u_word	rmp_unused;		/* not used (0) */	u_short	rmp_session;		/* session id (from read repl) */};struct rmp_packet {	struct hp_hdr hp_hdr;	struct hp_llc hp_llc;	union {		struct rmp_boot_req	rmp_brq;	/* boot request */		struct rmp_boot_repl	rmp_brpl;	/* boot reply */		struct rmp_read_req	rmp_rrq;	/* read request */		struct rmp_read_repl	rmp_rrpl;	/* read reply */		struct rmp_boot_done	rmp_done;	/* boot complete */		struct rmp_raw		rmp_raw;	/* raw data */	} rmp_proto;};/* *  Make life easier... */#define	r_type	rmp_proto.rmp_raw.rmp_type#define	r_data	rmp_proto.rmp_raw.rmp_data#define	r_brq	rmp_proto.rmp_brq#define	r_brpl	rmp_proto.rmp_brpl#define	r_rrq	rmp_proto.rmp_rrq#define	r_rrpl	rmp_proto.rmp_rrpl#define	r_done	rmp_proto.rmp_done