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
82