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	1	/*
	2	* Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
	3	*
	4	* @APPLE_LICENSE_OSREFERENCE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the
	10	* License may not be used to create, or enable the creation or
	11	* redistribution of, unlawful or unlicensed copies of an Apple operating
	12	* system, or to circumvent, violate, or enable the circumvention or
	13	* violation of, any terms of an Apple operating system software license
	14	* agreement.
	15	*
	16	* Please obtain a copy of the License at
	17	* http://www.opensource.apple.com/apsl/ and read it before using this
	18	* file.
	19	*
	20	* The Original Code and all software distributed under the License are
	21	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	22	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	23	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	25	* Please see the License for the specific language governing rights and
	26	* limitations under the License.
	27	*
	28	* @APPLE_LICENSE_OSREFERENCE_HEADER_END@
	29	*/
	30	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	31	/*
	32	* Copyright (c) 1992, 1993
	33	* The Regents of the University of California. All rights reserved.
	34	*
	35	* This code is derived from software contributed to Berkeley by
	36	* Rick Macklem at The University of Guelph.
	37	*
	38	* Redistribution and use in source and binary forms, with or without
	39	* modification, are permitted provided that the following conditions
	40	* are met:
	41	* 1. Redistributions of source code must retain the above copyright
	42	* notice, this list of conditions and the following disclaimer.
	43	* 2. Redistributions in binary form must reproduce the above copyright
	44	* notice, this list of conditions and the following disclaimer in the
	45	* documentation and/or other materials provided with the distribution.
	46	* 3. All advertising materials mentioning features or use of this software
	47	* must display the following acknowledgement:
	48	* This product includes software developed by the University of
	49	* California, Berkeley and its contributors.
	50	* 4. Neither the name of the University nor the names of its contributors
	51	* may be used to endorse or promote products derived from this software
	52	* without specific prior written permission.
	53	*
	54	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	55	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	56	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	57	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	58	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	59	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	60	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	61	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	62	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	63	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	64	* SUCH DAMAGE.
	65	*
	66	* @(#)nfsrtt.h 8.2 (Berkeley) 3/30/95
	67	* FreeBSD-Id: nfsrtt.h,v 1.8 1997/06/03 17:22:47 dfr Exp $
	68	*/
	69
	70
	71	#ifndef _NFS_NFSRTT_H_
	72	#define _NFS_NFSRTT_H_
	73
	74	#include <sys/appleapiopts.h>
	75
	76	#ifdef __APPLE_API_PRIVATE
	77	/*
	78	* Definitions for performance monitor.
	79	* The client and server logging are turned on by setting the global
	80	* constant "nfsrtton" to 1.
	81	*/
	82	#define NFSRTTLOGSIZ 128
	83
	84	/*
	85	* Circular log of client side rpc activity. Each log entry is for one
	86	* rpc filled in upon completion. (ie. in order of completion)
	87	* The "pos" is the table index for the "next" entry, therefore the
	88	* list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
	89	* chronological order of completion.
	90	*/
	91	struct nfsrtt {
	92	int pos; /* Position in array for next entry */
	93	struct rttl {
	94	u_int32_t proc; /* NFS procedure number */
	95	int rtt; /* Measured round trip time */
	96	int rto; /* Round Trip Timeout */
	97	int sent; /* # rpcs in progress */
	98	int cwnd; /* Send window */
	99	int srtt; /* Ave Round Trip Time */
	100	int sdrtt; /* Ave mean deviation of RTT */
	101	fsid_t fsid; /* Fsid for mount point */
	102	struct timeval tstamp; /* Timestamp of log entry */
	103	} rttl[NFSRTTLOGSIZ];
	104	};
	105
	106	/*
	107	* And definitions for server side performance monitor.
	108	* The log organization is the same as above except it is filled in at the
	109	* time the server sends the rpc reply.
	110	*/
	111
	112	/*
	113	* Bits for the flags field.
	114	*/
	115	#define DRT_TCP 0x02 /* Client used TCP transport */
	116	#define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */
	117	#define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */
	118	#define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */
	119
	120	/*
	121	* Server log structure
	122	* NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
	123	* (ISO perhaps?)
	124	*/
	125	struct nfsdrt {
	126	int pos; /* Position of next log entry */
	127	struct drt {
	128	int flag; /* Bits as defined above */
	129	u_int32_t proc; /* NFS procedure number */
	130	u_long ipadr; /* IP address of client */
	131	int resptime; /* Response time (usec) */
	132	struct timeval tstamp; /* Timestamp of log entry */
	133	} drt[NFSRTTLOGSIZ];
	134	};
	135
	136	#endif /* __APPLE_API_PRIVATE */
	137	#endif /* _NFS_NFSRTT_H_ */