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	1	/*
	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
	7	*
	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	26	/*
	27	* Copyright (c) 1992, 1993
	28	* The Regents of the University of California. All rights reserved.
	29	*
	30	* This code is derived from software contributed to Berkeley by
	31	* Rick Macklem at The University of Guelph.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 3. All advertising materials mentioning features or use of this software
	42	* must display the following acknowledgement:
	43	* This product includes software developed by the University of
	44	* California, Berkeley and its contributors.
	45	* 4. Neither the name of the University nor the names of its contributors
	46	* may be used to endorse or promote products derived from this software
	47	* without specific prior written permission.
	48	*
	49	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	50	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	51	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	52	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	53	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	54	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	55	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	56	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	57	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	58	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	59	* SUCH DAMAGE.
	60	*
	61	* @(#)nfsrtt.h 8.2 (Berkeley) 3/30/95
	62	* FreeBSD-Id: nfsrtt.h,v 1.8 1997/06/03 17:22:47 dfr Exp $
	63	*/
	64
	65
	66	#ifndef _NFS_NFSRTT_H_
	67	#define _NFS_NFSRTT_H_
	68
	69	#include <sys/appleapiopts.h>
	70
	71	#ifdef __APPLE_API_PRIVATE
	72	/*
	73	* Definitions for performance monitor.
	74	* The client and server logging are turned on by setting the global
	75	* constant "nfsrtton" to 1.
	76	*/
	77	#define NFSRTTLOGSIZ 128
	78
	79	/*
	80	* Circular log of client side rpc activity. Each log entry is for one
	81	* rpc filled in upon completion. (ie. in order of completion)
	82	* The "pos" is the table index for the "next" entry, therefore the
	83	* list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
	84	* chronological order of completion.
	85	*/
	86	struct nfsrtt {
	87	int pos; /* Position in array for next entry */
	88	struct rttl {
	89	u_int32_t proc; /* NFS procedure number */
	90	int rtt; /* Measured round trip time */
	91	int rto; /* Round Trip Timeout */
	92	int sent; /* # rpcs in progress */
	93	int cwnd; /* Send window */
	94	int srtt; /* Ave Round Trip Time */
	95	int sdrtt; /* Ave mean deviation of RTT */
	96	fsid_t fsid; /* Fsid for mount point */
	97	struct timeval tstamp; /* Timestamp of log entry */
	98	} rttl[NFSRTTLOGSIZ];
	99	};
	100
	101	/*
	102	* And definitions for server side performance monitor.
	103	* The log organization is the same as above except it is filled in at the
	104	* time the server sends the rpc reply.
	105	*/
	106
	107	/*
	108	* Bits for the flags field.
	109	*/
	110	#define DRT_NQNFS 0x01 /* Rpc used Nqnfs protocol */
	111	#define DRT_TCP 0x02 /* Client used TCP transport */
	112	#define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */
	113	#define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */
	114	#define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */
	115
	116	/*
	117	* Server log structure
	118	* NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
	119	* (ISO perhaps?)
	120	*/
	121	struct nfsdrt {
	122	int pos; /* Position of next log entry */
	123	struct drt {
	124	int flag; /* Bits as defined above */
	125	u_int32_t proc; /* NFS procedure number */
	126	u_long ipadr; /* IP address of client */
	127	int resptime; /* Response time (usec) */
	128	struct timeval tstamp; /* Timestamp of log entry */
	129	} drt[NFSRTTLOGSIZ];
	130	};
	131
	132	#endif /* __APPLE_API_PRIVATE */
	133	#endif /* _NFS_NFSRTT_H_ */