BSD 4.4 Lite Kernel Sources

1 files changed, 96 insertions, 0 deletions

diff --git a/sys/nfs/nfsrtt.h b/sys/nfs/nfsrtt.h
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+/*
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Rick Macklem at The University of Guelph.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)nfsrtt.h	8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * Definitions for performance monitor.
+ * The client and server logging are turned on by setting the global
+ * constant "nfsrtton" to 1.
+ */
+#define	NFSRTTLOGSIZ	128
+
+/*
+ * Circular log of client side rpc activity. Each log entry is for one
+ * rpc filled in upon completion. (ie. in order of completion)
+ * The "pos" is the table index for the "next" entry, therefore the
+ * list goes from nfsrtt.rttl[pos] --> nfsrtt.rttl[pos - 1] in
+ * chronological order of completion.
+ */
+struct nfsrtt {
+	int pos;			/* Position in array for next entry */
+	struct rttl {
+		int	proc;		/* NFS procedure number */
+		int	rtt;		/* Measured round trip time */
+		int	rto;		/* Round Trip Timeout */
+		int	sent;		/* # rpcs in progress */
+		int	cwnd;		/* Send window */
+		int	srtt;		/* Ave Round Trip Time */
+		int	sdrtt;		/* Ave mean deviation of RTT */
+		fsid_t	fsid;		/* Fsid for mount point */
+		struct timeval tstamp;	/* Timestamp of log entry */
+	} rttl[NFSRTTLOGSIZ];
+};
+
+/*
+ * And definitions for server side performance monitor.
+ * The log organization is the same as above except it is filled in at the
+ * time the server sends the rpc reply.
+ */
+
+/*
+ * Bits for the flags field.
+ */
+#define	DRT_NQNFS	0x01	/* Rpc used Nqnfs protocol */
+#define	DRT_TCP		0x02	/* Client used TCP transport */
+#define	DRT_CACHEREPLY	0x04	/* Reply was from recent request cache */
+#define	DRT_CACHEDROP	0x08	/* Rpc request dropped, due to recent reply */
+
+/*
+ * Server log structure
+ * NB: ipadr == INADDR_ANY indicates a client using a non IP protocol.
+ *	(ISO perhaps?)
+ */
+struct nfsdrt {
+	int pos;			/* Position of next log entry */
+	struct drt {
+		int	flag;		/* Bits as defined above */
+		int	proc;		/* NFS procedure number */
+		u_long	ipadr;		/* IP address of client */
+		int	resptime;	/* Response time (usec) */
+		struct timeval tstamp;	/* Timestamp of log entry */
+	} drt[NFSRTTLOGSIZ];
+};