Annotation of sys/nfs/nfsrvcache.h, Revision 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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