sys/nfs/nfsrtt.h

   1 /*      $NetBSD: nfsrtt.h,v 1.8 2005/12/11 12:25:17 christos 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 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_TCP         0x02    /* Client used TCP transport */
  80 #define DRT_CACHEREPLY  0x04    /* Reply was from recent request cache */
  81 #define DRT_CACHEDROP   0x08    /* Rpc request dropped, due to recent reply */
  82 #define DRT_NFSV3       0x10    /* Rpc used NFS Version 3 */
  83
  84 /*
  85  * Server log structure
  86  * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
  87  *      (ISO perhaps?)
  88  */
  89 struct nfsdrt {
  90         int pos;                        /* Position of next log entry */
  91         struct drt {
  92                 int       flag;         /* Bits as defined above */
  93                 u_int32_t proc;         /* NFS procedure number */
  94                 u_int32_t ipadr;        /* IP address of client */
  95                 int       resptime;     /* Response time (usec) */
  96                 struct timeval tstamp;  /* Timestamp of log entry */
  97         } drt[NFSRTTLOGSIZ];
  98 };
  99
 100 #ifdef _KERNEL
 101 extern int nfsrtton;
 102 #endif
 103
 104 #endif