| 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 | |