[src/trunk]: src/sys/netinet drop packet if IPv6 udp packet does not have che...

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

details:   https://anonhg.NetBSD.org/src/rev/9b9e0f74ceca
branches:  trunk
changeset: 565163:9b9e0f74ceca
user:      itojun <itojun%NetBSD.org@localhost>
date:      Wed Mar 31 07:54:00 2004 +0000

description:
drop packet if IPv6 udp packet does not have checksum (checksum is mandatory
in IPv6).

diffstat:

 sys/netinet/udp_usrreq.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (31 lines):

diff -r e978978c500d -r 9b9e0f74ceca sys/netinet/udp_usrreq.c
--- a/sys/netinet/udp_usrreq.c  Wed Mar 31 07:52:43 2004 +0000
+++ b/sys/netinet/udp_usrreq.c  Wed Mar 31 07:54:00 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: udp_usrreq.c,v 1.116 2004/03/24 15:34:54 atatat Exp $  */
+/*     $NetBSD: udp_usrreq.c,v 1.117 2004/03/31 07:54:00 itojun Exp $  */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -61,7 +61,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.116 2004/03/24 15:34:54 atatat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.117 2004/03/31 07:54:00 itojun Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -430,9 +430,10 @@
        /*
         * Checksum extended UDP header and data.
         */
-       if (uh->uh_sum == 0)
+       if (uh->uh_sum == 0) {
                udp6stat.udp6s_nosum++;
-       else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
+               goto bad;
+       } else if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
                udp6stat.udp6s_badsum++;
                goto bad;
        }