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From: "Andrey V. Elsukov" <ae@FreeBSD.org>
Date: Wed, 2 Mar 2016 13:54:44 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org
Subject: svn commit: r296312 - in stable/9: sbin/ipfw sys/netpfil/ipfw
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Author: ae
Date: Wed Mar  2 13:54:43 2016
New Revision: 296312
URL: https://svnweb.freebsd.org/changeset/base/296312

Log:
  MFC r295969:
    Fix bug in filling and handling ipfw's O_DSCP opcode.
    Due to integer overflow CS4 token was handled as BE.
  
    PR:		207459

Modified:
  stable/9/sbin/ipfw/ipfw2.c
  stable/9/sys/netpfil/ipfw/ip_fw2.c
Directory Properties:
  stable/9/sbin/ipfw/   (props changed)
  stable/9/sys/   (props changed)
  stable/9/sys/netpfil/   (props changed)

Modified: stable/9/sbin/ipfw/ipfw2.c
==============================================================================
--- stable/9/sbin/ipfw/ipfw2.c	Wed Mar  2 13:38:21 2016	(r296311)
+++ stable/9/sbin/ipfw/ipfw2.c	Wed Mar  2 13:54:43 2016	(r296312)
@@ -779,7 +779,7 @@ fill_dscp(ipfw_insn *cmd, char *av, int 
 				errx(EX_DATAERR, "Invalid DSCP value");
 		}
 
-		if (code > 32)
+		if (code >= 32)
 			*high |= 1 << (code - 32);
 		else
 			*low |= 1 << code;

Modified: stable/9/sys/netpfil/ipfw/ip_fw2.c
==============================================================================
--- stable/9/sys/netpfil/ipfw/ip_fw2.c	Wed Mar  2 13:38:21 2016	(r296311)
+++ stable/9/sys/netpfil/ipfw/ip_fw2.c	Wed Mar  2 13:54:43 2016	(r296312)
@@ -1679,7 +1679,7 @@ do {								\
 					break;
 
 				/* DSCP bitmask is stored as low_u32 high_u32 */
-				if (x > 32)
+				if (x >= 32)
 					match = *(p + 1) & (1 << (x - 32));
 				else
 					match = *p & (1 << x);