bsd/nfs/nfsrtt.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1992, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Rick Macklem at The University of Guelph.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)nfsrtt.h    8.2 (Berkeley) 3/30/95
  59  * FreeBSD-Id: nfsrtt.h,v 1.8 1997/06/03 17:22:47 dfr Exp $
  60  */
  61
  62
  63 #ifndef _NFS_NFSRTT_H_
  64 #define _NFS_NFSRTT_H_
  65
  66 #include <sys/appleapiopts.h>
  67
  68 #ifdef __APPLE_API_PRIVATE
  69 /*
  70  * Definitions for performance monitor.
  71  * The client and server logging are turned on by setting the global
  72  * constant "nfsrtton" to 1.
  73  */
  74 #define NFSRTTLOGSIZ    128
  75
  76 /*
  77  * Circular log of client side rpc activity. Each log entry is for one
  78  * rpc filled in upon completion. (ie. in order of completion)
  79  * The "pos" is the table index for the "next" entry, therefore the
  80  * list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
  81  * chronological order of completion.
  82  */
  83 struct nfsrtt {
  84         int pos;                        /* Position in array for next entry */
  85         struct rttl {
  86                 u_int32_t proc;         /* NFS procedure number */
  87                 int     rtt;            /* Measured round trip time */
  88                 int     rto;            /* Round Trip Timeout */
  89                 int     sent;           /* # rpcs in progress */
  90                 int     cwnd;           /* Send window */
  91                 int     srtt;           /* Ave Round Trip Time */
  92                 int     sdrtt;          /* Ave mean deviation of RTT */
  93                 fsid_t  fsid;           /* Fsid for mount point */
  94                 struct timeval tstamp;  /* Timestamp of log entry */
  95         } rttl[NFSRTTLOGSIZ];
  96 };
  97
  98 /*
  99  * And definitions for server side performance monitor.
 100  * The log organization is the same as above except it is filled in at the
 101  * time the server sends the rpc reply.
 102  */
 103
 104 /*
 105  * Bits for the flags field.
 106  */
 107 #define DRT_TCP         0x02    /* Client used TCP transport */
 108 #define DRT_CACHEREPLY  0x04    /* Reply was from recent request cache */
 109 #define DRT_CACHEDROP   0x08    /* Rpc request dropped, due to recent reply */
 110 #define DRT_NFSV3       0x10    /* Rpc used NFS Version 3 */
 111
 112 /*
 113  * Server log structure
 114  * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
 115  *      (ISO perhaps?)
 116  */
 117 struct nfsdrt {
 118         int pos;                        /* Position of next log entry */
 119         struct drt {
 120                 int     flag;           /* Bits as defined above */
 121                 u_int32_t proc;         /* NFS procedure number */
 122                 u_long  ipadr;          /* IP address of client */
 123                 int     resptime;       /* Response time (usec) */
 124                 struct timeval tstamp;  /* Timestamp of log entry */
 125         } drt[NFSRTTLOGSIZ];
 126 };
 127
 128 #endif /* __APPLE_API_PRIVATE */
 129 #endif /* _NFS_NFSRTT_H_ */