1 | /* $NetBSD: nfsrtt.h,v 1.10 2014/09/05 05:34:41 matt 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 rttl { |
56 | u_int32_t proc; /* NFS procedure number */ |
57 | int rtt; /* Measured round trip time */ |
58 | int rto; /* Round Trip Timeout */ |
59 | int sent; /* # rpcs in progress */ |
60 | int cwnd; /* Send window */ |
61 | int srtt; /* Ave Round Trip Time */ |
62 | int sdrtt; /* Ave mean deviation of RTT */ |
63 | fsid_t fsid; /* Fsid for mount point */ |
64 | struct timeval tstamp; /* Timestamp of log entry */ |
65 | }; |
66 | |
67 | struct nfsrtt { |
68 | int pos; /* Position in array for next entry */ |
69 | struct rttl 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_TCP 0x02 /* Client used TCP transport */ |
82 | #define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */ |
83 | #define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */ |
84 | #define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */ |
85 | |
86 | /* |
87 | * Server log structure |
88 | * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol. |
89 | * (ISO perhaps?) |
90 | */ |
91 | struct nfsdrt { |
92 | int pos; /* Position of next log entry */ |
93 | struct drt { |
94 | int flag; /* Bits as defined above */ |
95 | u_int32_t proc; /* NFS procedure number */ |
96 | u_int32_t ipadr; /* IP address of client */ |
97 | int resptime; /* Response time (usec) */ |
98 | struct timeval tstamp; /* Timestamp of log entry */ |
99 | } drt[NFSRTTLOGSIZ]; |
100 | }; |
101 | |
102 | #ifdef _KERNEL |
103 | extern int nfsrtton; |
104 | #endif |
105 | |
106 | #endif |
107 | |