1/* $NetBSD: nfsrtt.h,v 1.11 2024/12/07 02:05:55 riastradh 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#ifndef _NFS_NFSRTT_H_
38#define _NFS_NFSRTT_H_
39
40#include <sys/types.h>
41
42#include <sys/fstypes.h>
43#include <sys/time.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 */
59struct rttl {
60 u_int32_t proc; /* NFS procedure number */
61 int rtt; /* Measured round trip time */
62 int rto; /* Round Trip Timeout */
63 int sent; /* # rpcs in progress */
64 int cwnd; /* Send window */
65 int srtt; /* Ave Round Trip Time */
66 int sdrtt; /* Ave mean deviation of RTT */
67 fsid_t fsid; /* Fsid for mount point */
68 struct timeval tstamp; /* Timestamp of log entry */
69};
70
71struct nfsrtt {
72 int pos; /* Position in array for next entry */
73 struct rttl rttl[NFSRTTLOGSIZ];
74};
75
76/*
77 * And definitions for server side performance monitor.
78 * The log organization is the same as above except it is filled in at the
79 * time the server sends the rpc reply.
80 */
81
82/*
83 * Bits for the flags field.
84 */
85#define DRT_TCP 0x02 /* Client used TCP transport */
86#define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */
87#define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */
88#define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */
89
90/*
91 * Server log structure
92 * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
93 * (ISO perhaps?)
94 */
95struct nfsdrt {
96 int pos; /* Position of next log entry */
97 struct drt {
98 int flag; /* Bits as defined above */
99 u_int32_t proc; /* NFS procedure number */
100 u_int32_t ipadr; /* IP address of client */
101 int resptime; /* Response time (usec) */
102 struct timeval tstamp; /* Timestamp of log entry */
103 } drt[NFSRTTLOGSIZ];
104};
105
106#ifdef _KERNEL
107extern int nfsrtton;
108#endif
109
110#endif /* _NFS_NFSRTT_H_ */