Annotation of sys/nfs/nfsrvcache.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: nfsrvcache.h,v 1.6 2003/06/02 23:28:20 millert 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:
39: #ifndef _NFS_NFSRVCACHE_H_
40: #define _NFS_NFSRVCACHE_H_
41:
42: /*
43: * Definitions for the server recent request cache
44: */
45:
46: #define NFSRVCACHESIZ 64
47:
48: struct nfsrvcache {
49: TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */
50: LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */
51: u_int32_t rc_xid; /* rpc id number */
52: union {
53: struct mbuf *ru_repmb; /* Reply mbuf list OR */
54: int ru_repstat; /* Reply status */
55: } rc_un;
56: union nethostaddr rc_haddr; /* Host address */
57: u_int16_t rc_proc; /* rpc proc number */
58: u_char rc_state; /* Current state of request */
59: u_char rc_flag; /* Flag bits */
60: };
61:
62: #define rc_reply rc_un.ru_repmb
63: #define rc_status rc_un.ru_repstat
64: #define rc_inetaddr rc_haddr.had_inetaddr
65: #define rc_nam rc_haddr.had_nam
66:
67: /* Cache entry states */
68: #define RC_UNUSED 0
69: #define RC_INPROG 1
70: #define RC_DONE 2
71:
72: /* Return values */
73: #define RC_DROPIT 0
74: #define RC_REPLY 1
75: #define RC_DOIT 2
76: #define RC_CHECKIT 3
77:
78: /* Flag bits */
79: #define RC_LOCKED 0x01
80: #define RC_WANTED 0x02
81: #define RC_REPSTATUS 0x04
82: #define RC_REPMBUF 0x08
83: #define RC_INETADDR 0x20
84: #define RC_NAM 0x40
85:
86: #endif
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