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nfsrtt.h revision 1.7 
      1 /*	$NetBSD: nfsrtt.h,v 1.7 2003/08/07 16:33:57 agc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Rick Macklem at The University of Guelph.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)nfsrtt.h	8.2 (Berkeley) 3/30/95
     35  */
     36 
     37 
     38 #ifndef _NFS_NFSRTT_H_
     39 #define _NFS_NFSRTT_H_
     40 
     41 /*
     42  * Definitions for performance monitor.
     43  * The client and server logging are turned on by setting the global
     44  * constant "nfsrtton" to 1.
     45  */
     46 #define	NFSRTTLOGSIZ	128
     47 
     48 /*
     49  * Circular log of client side rpc activity. Each log entry is for one
     50  * rpc filled in upon completion. (ie. in order of completion)
     51  * The "pos" is the table index for the "next" entry, therefore the
     52  * list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
     53  * chronological order of completion.
     54  */
     55 struct nfsrtt {
     56 	int pos;			/* Position in array for next entry */
     57 	struct rttl {
     58 		u_int32_t	proc;		/* NFS procedure number */
     59 		int		rtt;		/* Measured round trip time */
     60 		int		rto;		/* Round Trip Timeout */
     61 		int		sent;		/* # rpcs in progress */
     62 		int		cwnd;		/* Send window */
     63 		int		srtt;		/* Ave Round Trip Time */
     64 		int		sdrtt;		/* Ave mean deviation of RTT */
     65 		fsid_t		fsid;		/* Fsid for mount point */
     66 		struct timeval	tstamp;	/* Timestamp of log entry */
     67 	} rttl[NFSRTTLOGSIZ];
     68 };
     69 
     70 /*
     71  * And definitions for server side performance monitor.
     72  * The log organization is the same as above except it is filled in at the
     73  * time the server sends the rpc reply.
     74  */
     75 
     76 /*
     77  * Bits for the flags field.
     78  */
     79 #define	DRT_NQNFS	0x01	/* Rpc used Nqnfs protocol */
     80 #define	DRT_TCP		0x02	/* Client used TCP transport */
     81 #define	DRT_CACHEREPLY	0x04	/* Reply was from recent request cache */
     82 #define	DRT_CACHEDROP	0x08	/* Rpc request dropped, due to recent reply */
     83 #define DRT_NFSV3	0x10	/* Rpc used NFS Version 3 */
     84 
     85 /*
     86  * Server log structure
     87  * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
     88  *	(ISO perhaps?)
     89  */
     90 struct nfsdrt {
     91 	int pos;			/* Position of next log entry */
     92 	struct drt {
     93 		int       flag;		/* Bits as defined above */
     94 		u_int32_t proc;		/* NFS procedure number */
     95 		u_int32_t ipadr;	/* IP address of client */
     96 		int       resptime;	/* Response time (usec) */
     97 		struct timeval tstamp;	/* Timestamp of log entry */
     98 	} drt[NFSRTTLOGSIZ];
     99 };
    100 
    101 #ifdef _KERNEL
    102 extern int nfsrtton;
    103 #endif
    104 
    105 #endif
    106