fixed an endian bug on fragment header scanning

Reported by Masahito Endo <masaxmasa@tahi.org>
kame · Oct 10, 2003 · f4022e3 · f4022e3
1 parent 1bbf097
commit f4022e3
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/kame/sys/netinet6/ip6_input.c b/kame/sys/netinet6/ip6_input.c
@@ -1,4 +1,4 @@
-/*	$KAME: ip6_input.c,v 1.330 2003/09/21 09:33:42 jinmei Exp $	*/
+/*	$KAME: ip6_input.c,v 1.331 2003/10/10 13:58:00 suz Exp $	*/
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -2103,7 +2103,8 @@ ip6_nexthdr(m, off, proto, nxtp)
 		if (m->m_pkthdr.len < off + sizeof(fh))
 			return -1;
 		m_copydata(m, off, sizeof(fh), (caddr_t)&fh);
-		if ((ntohs(fh.ip6f_offlg) & IP6F_OFF_MASK) != 0)
+		/* IP6F_OFF_MASK = 0xfff8(BigEndian), 0xf8ff(LittleEndian) */
+		if (fh.ip6f_offlg & IP6F_OFF_MASK)
 			return -1;
 		if (nxtp)
 			*nxtp = fh.ip6f_nxt;