[src/trunk]: src/sys/sys Add mbuf sysctl variables: msize, mclbytes, nmbclust...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2a00480db6d4
branches:  trunk
changeset: 472285:2a00480db6d4
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Mon Apr 26 21:55:53 1999 +0000

description:
Add mbuf sysctl variables: msize, mclbytes, nmbclusters, mblowat, and
mcllowat.

diffstat:

 sys/sys/mbuf.h |  29 +++++++++++++++++++++++++----
 1 files changed, 25 insertions(+), 4 deletions(-)

diffs (49 lines):

diff -r 3082248978e0 -r 2a00480db6d4 sys/sys/mbuf.h
--- a/sys/sys/mbuf.h    Mon Apr 26 21:54:46 1999 +0000
+++ b/sys/sys/mbuf.h    Mon Apr 26 21:55:53 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mbuf.h,v 1.42 1999/02/27 18:20:37 sommerfe Exp $       */
+/*     $NetBSD: mbuf.h,v 1.43 1999/04/26 21:55:53 thorpej Exp $        */
 
 /*-
  * Copyright (c) 1996, 1997, 1999 The NetBSD Foundation, Inc.
@@ -485,15 +485,36 @@
        u_short m_mtypes[256];  /* type specific mbuf allocations */
 };
 
+/*
+ * Mbuf sysctl variables.
+ */
+#define        MBUF_MSIZE              1       /* int: mbuf base size */
+#define        MBUF_MCLBYTES           2       /* int: mbuf cluster size */
+#define        MBUF_NMBCLUSTERS        3       /* int: limit on the # of clusters */
+#define        MBUF_MBLOWAT            4       /* int: mbuf low water mark */
+#define        MBUF_MCLLOWAT           5       /* int: mbuf cluster low water mark */
+#define        MBUF_MAXID              6       /* number of valid MBUF ids */
+
+#define        CTL_MBUF_NAMES { \
+       { 0, 0 }, \
+       { "msize", CTLTYPE_INT }, \
+       { "mclbytes", CTLTYPE_INT }, \
+       { "nmbclusters", CTLTYPE_INT }, \
+       { "mblowat", CTLTYPE_INT }, \
+       { "mcllowat", CTLTYPE_INT }, \
+}
+
 #ifdef _KERNEL
 extern struct mbstat mbstat;
-extern int     nmbclusters;
-extern int     nmbufs;
-extern struct mbuf *mmbfree;
+extern int     nmbclusters;            /* limit on the # of clusters */
+extern int     mblowat;                /* mbuf low water mark */
+extern int     mcllowat;               /* mbuf cluster low water mark */
 extern int     max_linkhdr;            /* largest link-level header */
 extern int     max_protohdr;           /* largest protocol header */
 extern int     max_hdr;                /* largest link+protocol header */
 extern int     max_datalen;            /* MHLEN - max_hdr */
+extern const int msize;                        /* mbuf base size */
+extern const int mclbytes;             /* mbuf cluster size */
 extern int     mbtypes[];              /* XXX */
 extern struct pool mbpool;
 extern struct pool mclpool;