text: /*
   * Copyright (c) 1989, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Rick Macklem at The University of Guelph.
   *
   * 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.
   *
   *	@(#)nfsrvcache.h	8.3 (Berkeley) 3/30/95
   * $Id: nfsrvcache.h,v 1.11 1998/05/31 20:09:00 peter Exp $
   */
  
  
  #ifndef _NFS_NFSRVCACHE_H_
  #define _NFS_NFSRVCACHE_H_
  
  #include <sys/queue.h>
  
  /*
   * Definitions for the server recent request cache
   */
  
  #define	NFSRVCACHESIZ	64
  
  struct nfsrvcache {
  	TAILQ_ENTRY(nfsrvcache) rc_lru;		/* LRU chain */
  	LIST_ENTRY(nfsrvcache) rc_hash;		/* Hash chain */
  	u_int32_t rc_xid;			/* rpc id number */
  	union {
  		struct mbuf *ru_repmb;		/* Reply mbuf list OR */
  		int ru_repstat;			/* Reply status */
  	} rc_un;
  	union nethostaddr rc_haddr;		/* Host address */
  	u_int32_t rc_proc;			/* rpc proc number */
  	u_char	rc_state;		/* Current state of request */
  	u_char	rc_flag;		/* Flag bits */
  };
  
  #define	rc_reply	rc_un.ru_repmb
  #define	rc_status	rc_un.ru_repstat
  #define	rc_inetaddr	rc_haddr.had_inetaddr
  #define	rc_nam		rc_haddr.had_nam
  
  /* Cache entry states */
  #define	RC_UNUSED	0
  #define	RC_INPROG	1
  #define	RC_DONE		2
  
  /* Return values */
  #define	RC_DROPIT	0
  #define	RC_REPLY	1
  #define	RC_DOIT		2
  #define	RC_CHECKIT	3
  
  /* Flag bits */
  #define	RC_LOCKED	0x01
  #define	RC_WANTED	0x02
  #define	RC_REPSTATUS	0x04
  #define	RC_REPMBUF	0x08
  #define	RC_NQNFS	0x10
  #define	RC_INETADDR	0x20
  #define	RC_NAM		0x40
  
  #endif
  