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