1 /* $OpenBSD: nfsrvcache.h,v 1.8 2013/11/26 20:41:27 beck 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)nfsrvcache.h 8.3 (Berkeley) 3/30/95 36 */ 37 38 #ifndef _NFS_NFSRVCACHE_H_ 39 #define _NFS_NFSRVCACHE_H_ 40 41 #define NFSRVCACHESIZ 2048 42 43 struct nfsrvcache { 44 TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */ 45 LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */ 46 u_int32_t rc_xid; /* rpc id number */ 47 union { 48 struct mbuf *ru_repmb; /* Reply mbuf list OR */ 49 int ru_repstat; /* Reply status */ 50 } rc_un; 51 union nethostaddr rc_haddr; /* Host address */ 52 u_int16_t rc_proc; /* rpc proc number */ 53 u_char rc_state; /* Current state of request */ 54 u_char rc_flag; /* Flag bits */ 55 }; 56 57 #define rc_reply rc_un.ru_repmb 58 #define rc_status rc_un.ru_repstat 59 #define rc_inetaddr rc_haddr.had_inetaddr 60 #define rc_nam rc_haddr.had_nam 61 62 /* Cache entry states */ 63 #define RC_UNUSED 0 64 #define RC_INPROG 1 65 #define RC_DONE 2 66 67 /* Return values */ 68 #define RC_DROPIT 0 69 #define RC_REPLY 1 70 #define RC_DOIT 2 71 #define RC_CHECKIT 3 72 73 /* Flag bits */ 74 #define RC_LOCKED 0x01 75 #define RC_WANTED 0x02 76 #define RC_REPSTATUS 0x04 77 #define RC_REPMBUF 0x08 78 #define RC_INETADDR 0x20 79 #define RC_NAM 0x40 80 81 #endif 82