Reduce MAX_M[RT]U back to 2048. Even on a null-modem

ppp link, we gain nothing with a larger mtu.

Suggested by:	joerg

Fix pred1 buffer size (must be == MAX_MTU)

2 files changed, 6 insertions, 8 deletions

diff --git a/usr.sbin/ppp/hdlc.h b/usr.sbin/ppp/hdlc.h
index 683d02e..c0789b0 100644
--- a/usr.sbin/ppp/hdlc.h
+++ b/usr.sbin/ppp/hdlc.h
@@ -15,7 +15,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
- * $Id: hdlc.h,v 1.6 1997/02/22 16:10:17 peter Exp $
+ * $Id: hdlc.h,v 1.7 1997/06/01 01:13:02 brian Exp $
  *
  *	TODO:
  */
@@ -39,11 +39,11 @@
 #define GOODFCS 0xf0b8	/* Good FCS value */
 
 #define	DEF_MRU		1500
-#define	MAX_MRU		16384
+#define	MAX_MRU		2048
 #define	MIN_MRU		296
 
 #define	DEF_MTU		0	/* whatever peer says */
-#define	MAX_MTU		16384
+#define	MAX_MTU		2048
 #define	MIN_MTU		296
 
 /*
diff --git a/usr.sbin/ppp/pred.c b/usr.sbin/ppp/pred.c
index e9b76a2..d7fb09d 100644
--- a/usr.sbin/ppp/pred.c
+++ b/usr.sbin/ppp/pred.c
@@ -5,7 +5,7 @@
 
 /*
  *
- * $Id: pred.c,v 1.9 1997/02/22 16:10:47 peter Exp $
+ * $Id: pred.c,v 1.10 1997/05/10 01:22:18 brian Exp $
  *
  * pred.c -- Test program for Dave Rand's rendition of the
  * predictor algorithm
@@ -94,8 +94,6 @@ int len;
     return(dest - orgdest);
 }
 
-#define SIZ1 2048
-
 void
 Pred1Init(direction)
 int direction;
@@ -116,7 +114,7 @@ Pred1Output(int pri, u_short proto, struct mbuf *bp)
   struct mbuf *mwp;
   u_char *cp, *wp, *hp;
   int orglen, len;
-  u_char bufp[SIZ1];
+  u_char bufp[MAX_MTU];
   u_short fcs;
 
   orglen = plength(bp) + 2;	/* add count of proto */
@@ -162,7 +160,7 @@ struct mbuf *bp;
   u_char *bufp;
   u_short fcs, proto;
 
-  wp = mballoc(SIZ1, MB_IPIN);
+  wp = mballoc(MAX_MTU, MB_IPIN);
   cp = MBUF_CTOP(bp);
   olen = plength(bp);
   pp = bufp = MBUF_CTOP(wp);