nfsrvcache.h revision 139823
1139823Simp/*- 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 * 4. Neither the name of the University nor the names of its contributors 171541Srgrimes * may be used to endorse or promote products derived from this software 181541Srgrimes * without specific prior written permission. 191541Srgrimes * 201541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301541Srgrimes * SUCH DAMAGE. 311541Srgrimes * 3222521Sdyson * @(#)nfsrvcache.h 8.3 (Berkeley) 3/30/95 3350477Speter * $FreeBSD: head/sys/nfsserver/nfsrvcache.h 139823 2005-01-07 01:45:51Z imp $ 341541Srgrimes */ 351541Srgrimes 3683651Speter#ifndef _NFSSERVER_NFSRVCACHE_H_ 3783651Speter#define _NFSSERVER_NFSRVCACHE_H_ 3822521Sdyson 3933058Sbde#include <sys/queue.h> 4033058Sbde 411541Srgrimes/* 421541Srgrimes * Definitions for the server recent request cache 431541Srgrimes */ 441541Srgrimes 459336Sdfr#define NFSRVCACHESIZ 64 461541Srgrimes 471541Srgrimesstruct nfsrvcache { 4860938Sjake TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */ 4960938Sjake LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */ 5036541Speter u_int32_t rc_xid; /* rpc id number */ 511541Srgrimes union { 521541Srgrimes struct mbuf *ru_repmb; /* Reply mbuf list OR */ 531541Srgrimes int ru_repstat; /* Reply status */ 541541Srgrimes } rc_un; 551541Srgrimes union nethostaddr rc_haddr; /* Host address */ 5626420Sdfr u_int32_t rc_proc; /* rpc proc number */ 571541Srgrimes u_char rc_state; /* Current state of request */ 581541Srgrimes u_char rc_flag; /* Flag bits */ 591541Srgrimes}; 601541Srgrimes 611541Srgrimes#define rc_reply rc_un.ru_repmb 621541Srgrimes#define rc_status rc_un.ru_repstat 631541Srgrimes#define rc_inetaddr rc_haddr.had_inetaddr 641541Srgrimes#define rc_nam rc_haddr.had_nam 651541Srgrimes 661541Srgrimes/* Cache entry states */ 671541Srgrimes#define RC_UNUSED 0 681541Srgrimes#define RC_INPROG 1 691541Srgrimes#define RC_DONE 2 701541Srgrimes 711541Srgrimes/* Return values */ 721541Srgrimes#define RC_DROPIT 0 731541Srgrimes#define RC_REPLY 1 741541Srgrimes#define RC_DOIT 2 751541Srgrimes 761541Srgrimes/* Flag bits */ 771541Srgrimes#define RC_LOCKED 0x01 781541Srgrimes#define RC_WANTED 0x02 791541Srgrimes#define RC_REPSTATUS 0x04 801541Srgrimes#define RC_REPMBUF 0x08 8183651Speter/* free 0x10 */ 821541Srgrimes#define RC_INETADDR 0x20 831541Srgrimes#define RC_NAM 0x40 842175Spaul 852175Spaul#endif 86