From d7c1b0394cf9260b5ff6319bfbe055ea7fc70d23 Mon Sep 17 00:00:00 2001
From: Paul Mackerras <paulus@samba.org>
Date: Wed, 30 Apr 1997 05:46:24 +0000
Subject: [PATCH] added in some mtu defns

---
 include/net/ppp_defs.h | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/include/net/ppp_defs.h b/include/net/ppp_defs.h
index 9b6ca4a..d1383f3 100644
--- a/include/net/ppp_defs.h
+++ b/include/net/ppp_defs.h
@@ -1,4 +1,4 @@
-/*	$Id: ppp_defs.h,v 1.10 1997/03/04 03:32:37 paulus Exp $	*/
+/*	$Id: ppp_defs.h,v 1.11 1997/04/30 05:46:24 paulus Exp $	*/
 
 /*
  * ppp_defs.h - PPP definitions.
@@ -35,7 +35,21 @@
  */
 #define PPP_HDRLEN	4	/* octets for standard ppp header */
 #define PPP_FCSLEN	2	/* octets for FCS */
+
+/*
+ * Packet sizes
+ *
+ * Note - lcp shouldn't be allowed to negotiate stuff outside these
+ *	  limits.  See lcp.h in the pppd directory.
+ * (XXX - these constants should simply be shared by lcp.c instead
+ *	  of living in lcp.h)
+ */
+#define	PPP_MTU		1500	/* Default MTU (size of Info field) */
+#define PPP_MAXMTU	65535 - (PPP_HDRLEN + PPP_FCSLEN)
+#define PPP_MINMTU	64
 #define PPP_MRU		1500	/* default MRU = max length of info field */
+#define PPP_MAXMRU	65000	/* Largest MRU we allow */
+#define PPP_MINMRU	128
 
 #define PPP_ADDRESS(p)	(((u_char *)(p))[0])
 #define PPP_CONTROL(p)	(((u_char *)(p))[1])
-- 
2.39.2