[src/trunk]: src/sys/sys recover traditional MINCLSIZE (= MHLEN + MLEN + 1). ...

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

details:   https://anonhg.NetBSD.org/src/rev/0d514cef0da7
branches:  trunk
changeset: 495415:0d514cef0da7
user:      itojun <itojun%NetBSD.org@localhost>
date:      Thu Jul 27 17:18:19 2000 +0000

description:
recover traditional MINCLSIZE (= MHLEN + MLEN + 1).  it will make
drivers less aggressive about use of cluster mbufs.

this chnage affects drivers with m_devget()-emulation.  many of
recent drivers do not look at MINCLSIZE any more, not sure why.

diffstat:

 sys/sys/mbuf.h |  4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diffs (18 lines):

diff -r 1ae04db292aa -r 0d514cef0da7 sys/sys/mbuf.h
--- a/sys/sys/mbuf.h    Thu Jul 27 16:34:31 2000 +0000
+++ b/sys/sys/mbuf.h    Thu Jul 27 17:18:19 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mbuf.h,v 1.49 2000/03/01 12:49:27 itojun Exp $ */
+/*     $NetBSD: mbuf.h,v 1.50 2000/07/27 17:18:19 itojun Exp $ */
 
 /*-
  * Copyright (c) 1996, 1997, 1999 The NetBSD Foundation, Inc.
@@ -97,7 +97,7 @@
  * non-external mbufs in the driver.  This has no impact on performance
  * seen from the packet statistics, and avoid header pullups in network code.
  */
-#define        MINCLSIZE       (MHLEN + 1)     /* smallest amount to put in cluster */
+#define        MINCLSIZE       (MHLEN+MLEN+1)  /* smallest amount to put in cluster */
 #define        M_MAXCOMPRESS   (MHLEN / 2)     /* max amount to copy for compression */
 
 /*