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. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)nfsrtt.h 8.2 (Berkeley) 3/30/95 33 * $FreeBSD: src/sys/nfs/nfsrtt.h,v 1.10 1999/08/28 00:50:03 peter Exp $ 34 * $DragonFly: src/sys/vfs/nfs/nfsrtt.h,v 1.2 2003/06/17 04:28:54 dillon Exp $ 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 nfsrtt { 56 int pos; /* Position in array for next entry */ 57 struct rttl { 58 u_int32_t proc; /* NFS procedure number */ 59 int rtt; /* Measured round trip time */ 60 int rto; /* Round Trip Timeout */ 61 int sent; /* # rpcs in progress */ 62 int cwnd; /* Send window */ 63 int srtt; /* Ave Round Trip Time */ 64 int sdrtt; /* Ave mean deviation of RTT */ 65 fsid_t fsid; /* Fsid for mount point */ 66 struct timeval tstamp; /* Timestamp of log entry */ 67 } rttl[NFSRTTLOGSIZ]; 68 }; 69 70 /* 71 * And definitions for server side performance monitor. 72 * The log organization is the same as above except it is filled in at the 73 * time the server sends the rpc reply. 74 */ 75 76 /* 77 * Bits for the flags field. 78 */ 79 #define DRT_NQNFS 0x01 /* Rpc used Nqnfs protocol */ 80 #define DRT_TCP 0x02 /* Client used TCP transport */ 81 #define DRT_CACHEREPLY 0x04 /* Reply was from recent request cache */ 82 #define DRT_CACHEDROP 0x08 /* Rpc request dropped, due to recent reply */ 83 #define DRT_NFSV3 0x10 /* Rpc used NFS Version 3 */ 84 85 /* 86 * Server log structure 87 * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol. 88 * (ISO perhaps?) 89 */ 90 struct nfsdrt { 91 int pos; /* Position of next log entry */ 92 struct drt { 93 int flag; /* Bits as defined above */ 94 u_int32_t proc; /* NFS procedure number */ 95 u_int32_t ipadr; /* IP address of client */ 96 int resptime; /* Response time (usec) */ 97 struct timeval tstamp; /* Timestamp of log entry */ 98 } drt[NFSRTTLOGSIZ]; 99 }; 100 101 #endif 102