FreeBSD/Linux Kernel Cross Reference
sys/nfs/nfsrtt.h
1 /*
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)nfsrtt.h 8.1 (Berkeley) 6/10/93
37 * $FreeBSD: src/sys/nfs/nfsrtt.h,v 1.4.4.1 1999/09/05 08:19:52 peter Exp $
38 */
39
40 #ifndef _NFS_NFSRTT_H_
41 #define _NFS_NFSRTT_H_
42
43 /*
44 * Definitions for performance monitor.
45 * The client and server logging are turned on by setting the global
46 * constant "nfsrtton" to 1.
47 */
48 #define NFSRTTLOGSIZ 128
49
50 /*
51 * Circular log of client side rpc activity. Each log entry is for one
52 * rpc filled in upon completion. (ie. in order of completion)
53 * The "pos" is the table index for the "next" entry, therefore the
54 * list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
55 * chronological order of completion.
56 */
57 struct nfsrtt {
58 int pos; /* Position in array for next entry */
59 struct rttl {
60 int 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 } rttl[NFSRTTLOGSIZ];
70 };
71
72 /*
73 * And definitions for server side performance monitor.
74 * The log organization is the same as above except it is filled in at the
75 * time the server sends the rpc reply.
76 */
77
78 /*
79 * Bits for the flags field.
80 */
81 #define DRT_NQNFS 0x01 /* Rpc used Nqnfs protocol */
82 #define DRT_TCP 0x02 /* Client used TCP transport */
83 #define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */
84 #define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */
85 #define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */
86
87 /*
88 * Server log structure
89 * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
90 * (ISO perhaps?)
91 */
92 struct nfsdrt {
93 int pos; /* Position of next log entry */
94 struct drt {
95 int flag; /* Bits as defined above */
96 int proc; /* NFS procedure number */
97 u_long ipadr; /* IP address of client */
98 int resptime; /* Response time (usec) */
99 struct timeval tstamp; /* Timestamp of log entry */
100 } drt[NFSRTTLOGSIZ];
101 };
102
103 #endif
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