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
43struct 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