 @@ -1,14 +1,14 @@
-/*	$NetBSD: icmp6.c,v 1.108 2005/01/17 10:16:07 itojun Exp $	*/
+/*	$NetBSD: icmp6.c,v 1.108.8.1 2008/10/03 09:21:02 jdc Exp $	*/
 /*	$KAME: icmp6.c,v 1.217 2001/06/20 15:03:29 jinmei Exp $	*/
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
 @@ -52,27 +52,27 @@
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
+ *
  *	@(#)ip_icmp.c	8.2 (Berkeley) 1/4/94
  */
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: icmp6.c,v 1.108 2005/01/17 10:16:07 itojun Exp $");
+__KERNEL_RCSID(0, "$NetBSD: icmp6.c,v 1.108.8.1 2008/10/03 09:21:02 jdc Exp $");
 #include "opt_inet.h"
 #include "opt_ipsec.h"
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/malloc.h>
 #include <sys/mbuf.h>
 #include <sys/protosw.h>
 #include <sys/socket.h>
 #include <sys/socketvar.h>
 #include <sys/time.h>
 #include <sys/kernel.h>
 @@ -505,26 +505,29 @@ icmp6_input(mp, offp, proto)
 			break;
 #endif
 		case ICMP6_DST_UNREACH_NOPORT:
 			code = PRC_UNREACH_PORT;
 			break;
 		default:
 			goto badcode;
+		}
 		goto deliver;
 	case ICMP6_PACKET_TOO_BIG:
 		icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_pkttoobig);
 		/*
 		 * MTU is checked in icmp6_mtudisc.
 		 */
 		code = PRC_MSGSIZE;
 		/*
 		 * Updating the path MTU will be done after examining
 		 * intermediate extension headers.
 		 */
 		goto deliver;
 	case ICMP6_TIME_EXCEEDED:
 		icmp6_ifstat_inc(m->m_pkthdr.rcvif, ifs6_in_timeexceed);
 		switch (code) {
 		case ICMP6_TIME_EXCEED_TRANSIT:
 			code = PRC_TIMXCEED_INTRANS;
 @@ -1098,26 +1101,40 @@ icmp6_mtudisc_update(ip6cp, validated)
 	struct ip6ctlparam *ip6cp;
 	int validated;
+{
 	unsigned long rtcount;
 	struct icmp6_mtudisc_callback *mc;
 	struct in6_addr *dst = ip6cp->ip6c_finaldst;
 	struct icmp6_hdr *icmp6 = ip6cp->ip6c_icmp6;
 	struct mbuf *m = ip6cp->ip6c_m;	/* will be necessary for scope issue */
 	u_int mtu = ntohl(icmp6->icmp6_mtu);
 	struct rtentry *rt = NULL;
 	struct sockaddr_in6 sin6;
 	/*
 	 * The MTU should not be less than the minimal IPv6 MTU except for the
 	 * hack in ip6_output/ip6_setpmtu where we always include a frag header.
 	 * In that one case, the MTU might be less than 1280.
 	 */
 	if (__predict_false(mtu < IPV6_MMTU - sizeof(struct ip6_frag))) {
 		/* is the mtu even sane? */
 		if (mtu < sizeof(struct ip6_hdr) + sizeof(struct ip6_frag) + 8)
 			return;
 		if (!validated)
 			return;
 		mtu = IPV6_MMTU - sizeof(struct ip6_frag);
+	}
 	/*
 	 * allow non-validated cases if memory is plenty, to make traffic
 	 * from non-connected pcb happy.
 	 */
 	rtcount = rt_timer_count(icmp6_mtudisc_timeout_q);
 	if (validated) {
 		if (0 <= icmp6_mtudisc_hiwat && rtcount > icmp6_mtudisc_hiwat)
 			return;
 		else if (0 <= icmp6_mtudisc_lowat &&
 		    rtcount > icmp6_mtudisc_lowat) {
 			/*
 			 * XXX nuke a victim, install the new one.
 			 */
+		}