nfsrvcache.h revision 22521
11541Srgrimes/* 21541Srgrimes * Copyright (c) 1989, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * This code is derived from software contributed to Berkeley by 61541Srgrimes * Rick Macklem at The University of Guelph. 71541Srgrimes * 81541Srgrimes * Redistribution and use in source and binary forms, with or without 91541Srgrimes * modification, are permitted provided that the following conditions 101541Srgrimes * are met: 111541Srgrimes * 1. Redistributions of source code must retain the above copyright 121541Srgrimes * notice, this list of conditions and the following disclaimer. 131541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141541Srgrimes * notice, this list of conditions and the following disclaimer in the 151541Srgrimes * documentation and/or other materials provided with the distribution. 161541Srgrimes * 3. All advertising materials mentioning features or use of this software 171541Srgrimes * must display the following acknowledgement: 181541Srgrimes * This product includes software developed by the University of 191541Srgrimes * California, Berkeley and its contributors. 201541Srgrimes * 4. Neither the name of the University nor the names of its contributors 211541Srgrimes * may be used to endorse or promote products derived from this software 221541Srgrimes * without specific prior written permission. 231541Srgrimes * 241541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341541Srgrimes * SUCH DAMAGE. 351541Srgrimes * 3622521Sdyson * @(#)nfsrvcache.h 8.3 (Berkeley) 3/30/95 3721673Sjkh * $FreeBSD: head/sys/nfsserver/nfsrvcache.h 22521 1997-02-10 02:22:35Z dyson $ 381541Srgrimes */ 391541Srgrimes 4022521Sdyson 412175Spaul#ifndef _NFS_NFSRVCACHE_H_ 422175Spaul#define _NFS_NFSRVCACHE_H_ 432175Spaul 441541Srgrimes/* 451541Srgrimes * Definitions for the server recent request cache 461541Srgrimes */ 471541Srgrimes 489336Sdfr#define NFSRVCACHESIZ 64 491541Srgrimes 501541Srgrimesstruct nfsrvcache { 513664Sphk TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */ 523664Sphk LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */ 531541Srgrimes u_long rc_xid; /* rpc id number */ 541541Srgrimes union { 551541Srgrimes struct mbuf *ru_repmb; /* Reply mbuf list OR */ 561541Srgrimes int ru_repstat; /* Reply status */ 571541Srgrimes } rc_un; 581541Srgrimes union nethostaddr rc_haddr; /* Host address */ 591541Srgrimes short rc_proc; /* rpc proc number */ 601541Srgrimes u_char rc_state; /* Current state of request */ 611541Srgrimes u_char rc_flag; /* Flag bits */ 621541Srgrimes}; 631541Srgrimes 641541Srgrimes#define rc_reply rc_un.ru_repmb 651541Srgrimes#define rc_status rc_un.ru_repstat 661541Srgrimes#define rc_inetaddr rc_haddr.had_inetaddr 671541Srgrimes#define rc_nam rc_haddr.had_nam 681541Srgrimes 691541Srgrimes/* Cache entry states */ 701541Srgrimes#define RC_UNUSED 0 711541Srgrimes#define RC_INPROG 1 721541Srgrimes#define RC_DONE 2 731541Srgrimes 741541Srgrimes/* Return values */ 751541Srgrimes#define RC_DROPIT 0 761541Srgrimes#define RC_REPLY 1 771541Srgrimes#define RC_DOIT 2 781541Srgrimes#define RC_CHECKIT 3 791541Srgrimes 801541Srgrimes/* Flag bits */ 811541Srgrimes#define RC_LOCKED 0x01 821541Srgrimes#define RC_WANTED 0x02 831541Srgrimes#define RC_REPSTATUS 0x04 841541Srgrimes#define RC_REPMBUF 0x08 851541Srgrimes#define RC_NQNFS 0x10 861541Srgrimes#define RC_INETADDR 0x20 871541Srgrimes#define RC_NAM 0x40 882175Spaul 892175Spaul#endif 90