1 /* $OpenBSD: nfsrvcache.h,v 1.5 2001/06/25 03:28:16 csapuntz Exp $ */ 2 /* $NetBSD: nfsrvcache.h,v 1.10 1996/02/18 11:54:08 fvdl Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Rick Macklem at The University of Guelph. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)nfsrvcache.h 8.3 (Berkeley) 3/30/95 40 */ 41 42 43 #ifndef _NFS_NFSRVCACHE_H_ 44 #define _NFS_NFSRVCACHE_H_ 45 46 /* 47 * Definitions for the server recent request cache 48 */ 49 50 #define NFSRVCACHESIZ 64 51 52 struct nfsrvcache { 53 TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */ 54 LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */ 55 u_int32_t rc_xid; /* rpc id number */ 56 union { 57 struct mbuf *ru_repmb; /* Reply mbuf list OR */ 58 int ru_repstat; /* Reply status */ 59 } rc_un; 60 union nethostaddr rc_haddr; /* Host address */ 61 u_int16_t rc_proc; /* rpc proc number */ 62 u_char rc_state; /* Current state of request */ 63 u_char rc_flag; /* Flag bits */ 64 }; 65 66 #define rc_reply rc_un.ru_repmb 67 #define rc_status rc_un.ru_repstat 68 #define rc_inetaddr rc_haddr.had_inetaddr 69 #define rc_nam rc_haddr.had_nam 70 71 /* Cache entry states */ 72 #define RC_UNUSED 0 73 #define RC_INPROG 1 74 #define RC_DONE 2 75 76 /* Return values */ 77 #define RC_DROPIT 0 78 #define RC_REPLY 1 79 #define RC_DOIT 2 80 #define RC_CHECKIT 3 81 82 /* Flag bits */ 83 #define RC_LOCKED 0x01 84 #define RC_WANTED 0x02 85 #define RC_REPSTATUS 0x04 86 #define RC_REPMBUF 0x08 87 #define RC_INETADDR 0x20 88 #define RC_NAM 0x40 89 90 #endif 91