Home | History | Annotate | Line # | Download | only in nfs
nfsrtt.h revision 1.5 
      1 /*	$NetBSD: nfsrtt.h,v 1.5 1997/05/12 23:36:08 fvdl 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. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)nfsrtt.h	8.2 (Berkeley) 3/30/95
     39  */
     40 
     41 
     42 #ifndef _NFS_NFSRTT_H_
     43 #define _NFS_NFSRTT_H_
     44 
     45 /*
     46  * Definitions for performance monitor.
     47  * The client and server logging are turned on by setting the global
     48  * constant "nfsrtton" to 1.
     49  */
     50 #define	NFSRTTLOGSIZ	128
     51 
     52 /*
     53  * Circular log of client side rpc activity. Each log entry is for one
     54  * rpc filled in upon completion. (ie. in order of completion)
     55  * The "pos" is the table index for the "next" entry, therefore the
     56  * list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
     57  * chronological order of completion.
     58  */
     59 struct nfsrtt {
     60 	int pos;			/* Position in array for next entry */
     61 	struct rttl {
     62 		u_int32_t	proc;		/* NFS procedure number */
     63 		int		rtt;		/* Measured round trip time */
     64 		int		rto;		/* Round Trip Timeout */
     65 		int		sent;		/* # rpcs in progress */
     66 		int		cwnd;		/* Send window */
     67 		int		srtt;		/* Ave Round Trip Time */
     68 		int		sdrtt;		/* Ave mean deviation of RTT */
     69 		fsid_t		fsid;		/* Fsid for mount point */
     70 		struct timeval	tstamp;	/* Timestamp of log entry */
     71 	} rttl[NFSRTTLOGSIZ];
     72 };
     73 
     74 /*
     75  * And definitions for server side performance monitor.
     76  * The log organization is the same as above except it is filled in at the
     77  * time the server sends the rpc reply.
     78  */
     79 
     80 /*
     81  * Bits for the flags field.
     82  */
     83 #define	DRT_NQNFS	0x01	/* Rpc used Nqnfs protocol */
     84 #define	DRT_TCP		0x02	/* Client used TCP transport */
     85 #define	DRT_CACHEREPLY	0x04	/* Reply was from recent request cache */
     86 #define	DRT_CACHEDROP	0x08	/* Rpc request dropped, due to recent reply */
     87 #define DRT_NFSV3	0x10	/* Rpc used NFS Version 3 */
     88 
     89 /*
     90  * Server log structure
     91  * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
     92  *	(ISO perhaps?)
     93  */
     94 struct nfsdrt {
     95 	int pos;			/* Position of next log entry */
     96 	struct drt {
     97 		int       flag;		/* Bits as defined above */
     98 		u_int32_t proc;		/* NFS procedure number */
     99 		u_int32_t ipadr;	/* IP address of client */
    100 		int       resptime;	/* Response time (usec) */
    101 		struct timeval tstamp;	/* Timestamp of log entry */
    102 	} drt[NFSRTTLOGSIZ];
    103 };
    104 
    105 #endif
    106