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Annotation of sys/nfs/nfsrtt.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: nfsrtt.h,v 1.6 2003/06/02 23:28:20 millert Exp $      */
                      2: /*     $NetBSD: nfsrtt.h,v 1.4 1996/02/18 11:54:07 fvdl Exp $  */
                      3:
                      4: /*
                      5:  * Copyright (c) 1992, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * Rick Macklem at The University of Guelph.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. Neither the name of the University nor the names of its contributors
                     20:  *    may be used to endorse or promote products derived from this software
                     21:  *    without specific prior written permission.
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     33:  * SUCH DAMAGE.
                     34:  *
                     35:  *     @(#)nfsrtt.h    8.2 (Berkeley) 3/30/95
                     36:  */
                     37:
                     38:
                     39: #ifndef _NFS_NFSRTT_H_
                     40: #define _NFS_NFSRTT_H_
                     41:
                     42: /*
                     43:  * Definitions for performance monitor.
                     44:  * The client and server logging are turned on by setting the global
                     45:  * constant "nfsrtton" to 1.
                     46:  */
                     47: #define        NFSRTTLOGSIZ    128
                     48:
                     49: /*
                     50:  * Circular log of client side rpc activity. Each log entry is for one
                     51:  * rpc filled in upon completion. (ie. in order of completion)
                     52:  * The "pos" is the table index for the "next" entry, therefore the
                     53:  * list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
                     54:  * chronological order of completion.
                     55:  */
                     56: struct nfsrtt {
                     57:        int pos;                        /* Position in array for next entry */
                     58:        struct rttl {
                     59:                int     proc;           /* NFS procedure number */
                     60:                int     rtt;            /* Measured round trip time */
                     61:                int     rto;            /* Round Trip Timeout */
                     62:                int     sent;           /* # rpcs in progress */
                     63:                int     cwnd;           /* Send window */
                     64:                int     srtt;           /* Ave Round Trip Time */
                     65:                int     sdrtt;          /* Ave mean deviation of RTT */
                     66:                fsid_t  fsid;           /* Fsid for mount point */
                     67:                struct timeval tstamp;  /* Timestamp of log entry */
                     68:        } rttl[NFSRTTLOGSIZ];
                     69: };
                     70:
                     71: /*
                     72:  * And definitions for server side performance monitor.
                     73:  * The log organization is the same as above except it is filled in at the
                     74:  * time the server sends the rpc reply.
                     75:  */
                     76:
                     77: /*
                     78:  * Bits for the flags field.
                     79:  */
                     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:                int       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