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/* $NetBSD: nfsrtt.h,v 1.10 2014/09/05 05:34:41 matt Exp $ */
/*
* Copyright (c) 1992, 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. 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.
*
* @(#)nfsrtt.h 8.2 (Berkeley) 3/30/95
*/
#ifndef _NFS_NFSRTT_H_
#define _NFS_NFSRTT_H_
/*
* Definitions for performance monitor.
* The client and server logging are turned on by setting the global
* constant "nfsrtton" to 1.
*/
#define NFSRTTLOGSIZ 128
/*
* Circular log of client side rpc activity. Each log entry is for one
* rpc filled in upon completion. (ie. in order of completion)
* The "pos" is the table index for the "next" entry, therefore the
* list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
* chronological order of completion.
*/
struct rttl {
u_int32_t proc; /* NFS procedure number */
int rtt; /* Measured round trip time */
int rto; /* Round Trip Timeout */
int sent; /* # rpcs in progress */
int cwnd; /* Send window */
int srtt; /* Ave Round Trip Time */
int sdrtt; /* Ave mean deviation of RTT */
fsid_t fsid; /* Fsid for mount point */
struct timeval tstamp; /* Timestamp of log entry */
};
struct nfsrtt {
int pos; /* Position in array for next entry */
struct rttl rttl[NFSRTTLOGSIZ];
};
/*
* And definitions for server side performance monitor.
* The log organization is the same as above except it is filled in at the
* time the server sends the rpc reply.
*/
/*
* Bits for the flags field.
*/
#define DRT_TCP 0x02 /* Client used TCP transport */
#define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */
#define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */
#define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */
/*
* Server log structure
* NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
* (ISO perhaps?)
*/
struct nfsdrt {
int pos; /* Position of next log entry */
struct drt {
int flag; /* Bits as defined above */
u_int32_t proc; /* NFS procedure number */
u_int32_t ipadr; /* IP address of client */
int resptime; /* Response time (usec) */
struct timeval tstamp; /* Timestamp of log entry */
} drt[NFSRTTLOGSIZ];
};
#ifdef _KERNEL
extern int nfsrtton;
#endif
#endif
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