From 506f4949395e15eab13a4e26eaf7a12376bf8a01 Mon Sep 17 00:00:00 2001
From: Ruslan Ermilov <ru@FreeBSD.org>
Date: Wed, 1 Nov 2000 16:56:33 +0000
Subject: [PATCH] Wrong checksum may have been computed for certain UDP
 packets.

Reviewed by:	jlemon
---
 sys/netinet/udp_usrreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index 589fbef76d1..221dd8d4570 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -220,7 +220,7 @@ udp_input(m, off, proto)
 				uh->uh_sum = m->m_pkthdr.csum_data;
 			else
 	                	uh->uh_sum = in_pseudo(ip->ip_src.s_addr,
-				    ip->ip_dst.s_addr, htonl(ip->ip_len +
+				    ip->ip_dst.s_addr, htonl((u_short)len +
 				    m->m_pkthdr.csum_data + IPPROTO_UDP));
 			uh->uh_sum ^= 0xffff;
 		} else {