[src/trunk]: src/sys/sys Follow FreeBSD and cast MLEN and MHLEN to int. mbuf ...

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

details:   https://anonhg.NetBSD.org/src/rev/1e59c874f888
branches:  trunk
changeset: 969737:1e59c874f888
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Sat Feb 29 16:59:00 2020 +0000

description:
Follow FreeBSD and cast MLEN and MHLEN to int. mbuf length arithmtic is
done with signed integers and this avoids comparisons with different
signedness.

diffstat:

 sys/sys/mbuf.h |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (21 lines):

diff -r 3572aa4eb5ff -r 1e59c874f888 sys/sys/mbuf.h
--- a/sys/sys/mbuf.h    Sat Feb 29 16:56:58 2020 +0000
+++ b/sys/sys/mbuf.h    Sat Feb 29 16:59:00 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mbuf.h,v 1.222 2019/09/23 08:04:35 maxv Exp $  */
+/*     $NetBSD: mbuf.h,v 1.223 2020/02/29 16:59:00 mlelstv Exp $       */
 
 /*
  * Copyright (c) 1996, 1997, 1999, 2001, 2007 The NetBSD Foundation, Inc.
@@ -319,9 +319,9 @@
 MBUF_DEFINE(_mbuf_dummy, 1, 1);
 
 /* normal data len */
-#define MLEN           (MSIZE - offsetof(struct _mbuf_dummy, m_dat))
+#define MLEN           ((int)(MSIZE - offsetof(struct _mbuf_dummy, m_dat)))
 /* data len w/pkthdr */
-#define MHLEN          (MSIZE - offsetof(struct _mbuf_dummy, m_pktdat))
+#define MHLEN          ((int)(MSIZE - offsetof(struct _mbuf_dummy, m_pktdat)))
 
 #define MINCLSIZE      (MHLEN+MLEN+1)  /* smallest amount to put in cluster */