From: dtucker <dtucker@openbsd.org>
Date: Tue, 14 Dec 2021 23:47:36 +0000 (+0000)
Subject: Correct value for IPTOS_DSCP_LE since it needs to allow for the preceeding
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=7cf9856068a1d5a2615a65d75cb474b94382bcd1;p=openbsd

Correct value for IPTOS_DSCP_LE since it needs to allow for the preceeding
two ECN bits.  From daisuke.higashi at gmail.com via OpenSSH bz#3373,
ok claudio@, job@, djm@.
---

diff --git a/sys/netinet/ip.h b/sys/netinet/ip.h
index 6147cc8df5a..31a11b8c2d5 100644
--- a/sys/netinet/ip.h
+++ b/sys/netinet/ip.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip.h,v 1.19 2020/01/26 09:39:36 djm Exp $	*/
+/*	$OpenBSD: ip.h,v 1.20 2021/12/14 23:47:36 dtucker Exp $	*/
 /*	$NetBSD: ip.h,v 1.9 1995/05/15 01:22:44 cgd Exp $	*/
 
 /*
@@ -95,10 +95,12 @@ struct ip {
 #define	IPTOS_PREC_ROUTINE		0x00
 
 /*
- * Definitions for DiffServ Codepoints as per RFC2474
+ * Definitions for DiffServ Codepoints as per RFCs 2474, 3246, 4594 & 8622.
+ * These are the 6 most significant bits as they appear on the wire, so the
+ * two least significant bits must be zero.
  */
 #define	IPTOS_DSCP_CS0		0x00
-#define	IPTOS_DSCP_LE		0x01
+#define	IPTOS_DSCP_LE		0x04
 #define	IPTOS_DSCP_CS1		0x20
 #define	IPTOS_DSCP_AF11		0x28
 #define	IPTOS_DSCP_AF12		0x30