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/* $NetBSD: nfsrvcache.h,v 1.9 1995/12/19 23:08:11 cgd Exp $ */
/*
* 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 8.2 (Berkeley) 8/18/94
*/
/*
* Definitions for the server recent request cache
*/
#define NFSRVCACHESIZ 256
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_int16_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
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