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 */ 59 struct 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 71 struct 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 */ 95 struct 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 107 extern int nfsrtton; 108 #endif 109 110 #endif /* _NFS_NFSRTT_H_ */ 111