[apple/xnu.git] / bsd / nfs / nfsrvcache.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rick Macklem at The University of Guelph.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)nfsrvcache.h	8.3 (Berkeley) 3/30/95
 * FreeBSD-Id: nfsrvcache.h,v 1.9 1997/06/03 17:22:47 dfr Exp $
 */


#ifndef _NFS_NFSRVCACHE_H_
#define _NFS_NFSRVCACHE_H_

/*
 * Definitions for the server recent request cache
 */

#define	NFSRVCACHESIZ	64

struct nfsrvcache {
	TAILQ_ENTRY(nfsrvcache) rc_lru;		/* LRU chain */
	LIST_ENTRY(nfsrvcache) rc_hash;		/* Hash chain */
	u_long	rc_xid;				/* rpc id number */
	union {
		struct mbuf *ru_repmb;		/* Reply mbuf list OR */
		int ru_repstat;			/* Reply status */
	} rc_un;
	union nethostaddr rc_haddr;		/* Host address */
	u_int32_t rc_proc;			/* rpc proc number */
	u_char	rc_state;		/* Current state of request */
	u_char	rc_flag;		/* Flag bits */
};

#define	rc_reply	rc_un.ru_repmb
#define	rc_status	rc_un.ru_repstat
#define	rc_inetaddr	rc_haddr.had_inetaddr
#define	rc_nam		rc_haddr.had_nam

/* Cache entry states */
#define	RC_UNUSED	0
#define	RC_INPROG	1
#define	RC_DONE		2

/* Return values */
#define	RC_DROPIT	0
#define	RC_REPLY	1
#define	RC_DOIT		2
#define	RC_CHECKIT	3

/* Flag bits */
#define	RC_LOCKED	0x01
#define	RC_WANTED	0x02
#define	RC_REPSTATUS	0x04
#define	RC_REPMBUF	0x08
#define	RC_NQNFS	0x10
#define	RC_INETADDR	0x20
#define	RC_NAM		0x40

#endif
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	23	/*
	24	* Copyright (c) 1989, 1993
	25	* The Regents of the University of California. All rights reserved.
	26	*
	27	* This code is derived from software contributed to Berkeley by
	28	* Rick Macklem at The University of Guelph.
	29	*
	30	* Redistribution and use in source and binary forms, with or without
	31	* modification, are permitted provided that the following conditions
	32	* are met:
	33	* 1. Redistributions of source code must retain the above copyright
	34	* notice, this list of conditions and the following disclaimer.
	35	* 2. Redistributions in binary form must reproduce the above copyright
	36	* notice, this list of conditions and the following disclaimer in the
	37	* documentation and/or other materials provided with the distribution.
	38	* 3. All advertising materials mentioning features or use of this software
	39	* must display the following acknowledgement:
	40	* This product includes software developed by the University of
	41	* California, Berkeley and its contributors.
	42	* 4. Neither the name of the University nor the names of its contributors
	43	* may be used to endorse or promote products derived from this software
	44	* without specific prior written permission.
	45	*
	46	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	47	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	48	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	49	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	50	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	51	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	52	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	53	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	54	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	55	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	56	* SUCH DAMAGE.
	57	*
	58	* @(#)nfsrvcache.h 8.3 (Berkeley) 3/30/95
	59	* FreeBSD-Id: nfsrvcache.h,v 1.9 1997/06/03 17:22:47 dfr Exp $
	60	*/
	61
	62
	63	#ifndef _NFS_NFSRVCACHE_H_
	64	#define _NFS_NFSRVCACHE_H_
65
66	/*
67	* Definitions for the server recent request cache
68	*/
69
70	#define NFSRVCACHESIZ 64
71
72	struct nfsrvcache {
73	TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */
74	LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */
75	u_long rc_xid; /* rpc id number */
76	union {
77	struct mbuf ru_repmb; / Reply mbuf list OR */
78	int ru_repstat; /* Reply status */
79	} rc_un;
80	union nethostaddr rc_haddr; /* Host address */
81	u_int32_t rc_proc; /* rpc proc number */
82	u_char rc_state; /* Current state of request */
83	u_char rc_flag; /* Flag bits */
84	};
85
86	#define rc_reply rc_un.ru_repmb
87	#define rc_status rc_un.ru_repstat
88	#define rc_inetaddr rc_haddr.had_inetaddr
89	#define rc_nam rc_haddr.had_nam
90
91	/* Cache entry states */
92	#define RC_UNUSED 0
93	#define RC_INPROG 1
94	#define RC_DONE 2
95
96	/* Return values */
97	#define RC_DROPIT 0
98	#define RC_REPLY 1
99	#define RC_DOIT 2
100	#define RC_CHECKIT 3
101
102	/* Flag bits */
103	#define RC_LOCKED 0x01
104	#define RC_WANTED 0x02
105	#define RC_REPSTATUS 0x04
106	#define RC_REPMBUF 0x08
107	#define RC_NQNFS 0x10
108	#define RC_INETADDR 0x20
109	#define RC_NAM 0x40
110
111	#endif