KAME netinet6 basic part(no IPsec,no V6 Multicast Forwarding, no UDP/TCP

for IPv6 yet)

With this patch, you can assigne IPv6 addr automatically, and can reply to
IPv6 ping.

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project

1 files changed, 410 insertions, 0 deletions

diff --git a/sys/netinet6/in6_proto.c b/sys/netinet6/in6_proto.c
new file mode 100644
index 0000000..8189d01
--- /dev/null
+++ b/sys/netinet6/in6_proto.c
@@ -0,0 +1,410 @@
+/*
+ * 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
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1993
+ *	The Regents of the University of California.  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
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * 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.
+ *
+ *	@(#)in_proto.c	8.1 (Berkeley) 6/10/93
+ */
+
+#include "opt_inet.h"
+#include "opt_ipsec.h"
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/protosw.h>
+#include <sys/kernel.h>
+#include <sys/domain.h>
+#include <sys/mbuf.h>
+#include <sys/systm.h>
+#include <sys/sysctl.h>
+
+#include <net/if.h>
+#include <net/radix.h>
+#include <net/route.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_var.h>
+#include <netinet/ip.h>
+#include <netinet/ip_var.h>
+#include <netinet6/ip6.h>
+#include <netinet6/ip6_var.h>
+#include <netinet6/icmp6.h>
+
+#include <netinet/tcp.h>
+#include <netinet/tcp_timer.h>
+#include <netinet/tcp_var.h>
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+#include <netinet6/tcp6_var.h>
+#include <netinet6/udp6_var.h>
+
+#include <netinet6/pim6_var.h>
+
+#include <netinet6/nd6.h>
+#include <netinet6/in6_prefix.h>
+
+#ifdef IPSEC
+#include <netinet6/ipsec.h>
+#ifdef INET6
+#include <netinet6/ipsec6.h>
+#endif /* INET6 */
+#include <netinet6/ah.h>
+#ifdef IPSEC_ESP
+#include <netinet6/esp.h>
+#endif
+#include <netinet6/ipcomp.h>
+#endif /*IPSEC*/
+
+#include <netinet6/ip6protosw.h>
+
+/* #include "gif.h" */
+#if NGIF > 0
+#include <netinet6/in6_gif.h>
+#endif
+
+#include <net/net_osdep.h>
+
+#define	offsetof(type, member)	((size_t)(&((type *)0)->member))
+
+/*
+ * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
+ */
+
+extern struct	domain inet6domain;
+static struct	pr_usrreqs nousrreqs;
+
+struct ip6protosw inet6sw[] = {
+{ 0,		&inet6domain,	IPPROTO_IPV6,	0,
+  0,		0,		0,		0,
+  0,
+  ip6_init,	0,		frag6_slowtimo,	frag6_drain,
+  &nousrreqs,
+},
+{ SOCK_RAW,	&inet6domain,	IPPROTO_RAW,	PR_ATOMIC | PR_ADDR,
+  rip6_input,	rip6_output,	0,		rip6_ctloutput,
+  0,
+  0,		0,		0,		0,
+  &rip6_usrreqs
+},
+{ SOCK_RAW,	&inet6domain,	IPPROTO_ICMPV6,	PR_ATOMIC | PR_ADDR,
+  icmp6_input,	rip6_output,	0,		rip6_ctloutput,
+  0,
+  icmp6_init,	icmp6_fasttimo,	0,		0,
+  &rip6_usrreqs
+},
+{ SOCK_RAW,	&inet6domain,	IPPROTO_DSTOPTS,PR_ATOMIC|PR_ADDR,
+  dest6_input,	0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs
+},
+{ SOCK_RAW,	&inet6domain,	IPPROTO_ROUTING,PR_ATOMIC|PR_ADDR,
+  route6_input,	0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs
+},
+{ SOCK_RAW,	&inet6domain,	IPPROTO_FRAGMENT,PR_ATOMIC|PR_ADDR,
+  frag6_input,	0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs
+},
+#ifdef IPSEC
+{ SOCK_RAW,	&inet6domain,	IPPROTO_AH,	PR_ATOMIC|PR_ADDR,
+  ah6_input,	0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs,
+},
+#ifdef IPSEC_ESP
+{ SOCK_RAW,	&inet6domain,	IPPROTO_ESP,	PR_ATOMIC|PR_ADDR,
+  esp6_input,	0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs,
+},
+#endif
+{ SOCK_RAW,	&inet6domain,	IPPROTO_IPCOMP,	PR_ATOMIC|PR_ADDR,
+  ipcomp6_input, 0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs,
+},
+#endif /* IPSEC */
+#if NGIF > 0
+{ SOCK_RAW,	&inet6domain,	IPPROTO_IPV4,	PR_ATOMIC|PR_ADDR,
+  in6_gif_input,0,	 	0,		0,
+  0,
+  0,		0,		0,		0,
+  &nousrreqs
+},
+#ifdef INET6
+{ SOCK_RAW,	&inet6domain,	IPPROTO_IPV6,	PR_ATOMIC|PR_ADDR,
+  in6_gif_input,0,	 	0,		0,
+  0,	
+  0,		0,		0,		0,
+  &nousrreqs
+},
+#endif /* INET6 */
+#endif /* GIF */
+/* raw wildcard */
+{ SOCK_RAW,	&inet6domain,	0,		PR_ATOMIC | PR_ADDR,
+  rip6_input,	rip6_output,	0,		rip6_ctloutput,
+  0,
+  0,		0,		0,		0,
+  &rip6_usrreqs
+},
+};
+
+extern int	in6_inithead __P((void **, int));
+
+struct domain inet6domain =
+    { AF_INET6, "internet6", 0, 0, 0,
+      (struct protosw *)inet6sw,
+      (struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 0,
+      in6_inithead,
+      offsetof(struct sockaddr_in6, sin6_addr) << 3,
+      sizeof(struct sockaddr_in6) };
+
+DOMAIN_SET(inet6);
+
+/*
+ * Internet configuration info
+ */
+#ifndef	IPV6FORWARDING
+#ifdef GATEWAY6
+#define	IPV6FORWARDING	1	/* forward IP6 packets not for us */
+#else
+#define	IPV6FORWARDING	0	/* don't forward IP6 packets not for us */
+#endif /* GATEWAY6 */
+#endif /* !IPV6FORWARDING */
+
+#ifndef	IPV6_SENDREDIRECTS
+#define	IPV6_SENDREDIRECTS	1
+#endif
+
+int	ip6_forwarding = IPV6FORWARDING;	/* act as router? */
+int	ip6_sendredirects = IPV6_SENDREDIRECTS;
+int	ip6_defhlim = IPV6_DEFHLIM;
+int	ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
+int	ip6_accept_rtadv = 0;	/* "IPV6FORWARDING ? 0 : 1" is dangerous */
+int	ip6_maxfragpackets = 200;
+int	ip6_log_interval = 5;
+int	ip6_hdrnestlimit = 50;	/* appropriate? */
+int	ip6_dad_count = 1;	/* DupAddrDetectionTransmits */
+u_int32_t	ip6_flow_seq;
+int	ip6_auto_flowlabel = 1;
+#if NGIF > 0
+int	ip6_gif_hlim = GIF_HLIM;
+#else
+int	ip6_gif_hlim = 0;
+#endif
+int	ip6_use_deprecated = 1;	/* allow deprecated addr (RFC2462 5.5.4) */
+int	ip6_rr_prune = 5;	/* router renumbering prefix
+				 * walk list every 5 sec.    */
+int	ip6_mapped_addr_on = 1;
+
+u_int32_t ip6_id = 0UL;
+int	ip6_keepfaith = 0;
+time_t	ip6_log_time = (time_t)0L;
+
+/* icmp6 */
+/*
+ * BSDI4 defines these variables in in_proto.c...
+ * XXX: what if we don't define INET? Should we define pmtu6_expire
+ * or so? (jinmei@kame.net 19990310)
+ */
+int	pmtu_expire = 60*10;
+int	pmtu_probe = 60*2;
+
+/* raw IP6 parameters */
+/*
+ * Nominal space allocated to a raw ip socket.
+ */
+#define	RIPV6SNDQ	8192
+#define	RIPV6RCVQ	8192
+
+u_long	rip6_sendspace = RIPV6SNDQ;
+u_long	rip6_recvspace = RIPV6RCVQ;
+
+/* ICMPV6 parameters */
+int	icmp6_rediraccept = 1;		/* accept and process redirects */
+int	icmp6_redirtimeout = 10 * 60;	/* 10 minutes */
+u_int	icmp6errratelim = 1000;		/* 1000usec = 1msec */
+
+/* UDP on IP6 parameters */
+int	udp6_sendspace = 9216;		/* really max datagram size */
+int	udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
+					/* 40 1K datagrams */
+
+/*
+ * sysctl related items.
+ */
+SYSCTL_NODE(_net,	PF_INET6,	inet6,	CTLFLAG_RW,	0,
+	"Internet6 Family");
+
+/* net.inet6 */
+SYSCTL_NODE(_net_inet6,	IPPROTO_IPV6,	ip6,	CTLFLAG_RW, 0,	"IP6");
+SYSCTL_NODE(_net_inet6,	IPPROTO_ICMPV6,	icmp6,	CTLFLAG_RW, 0,	"ICMP6");
+SYSCTL_NODE(_net_inet6,	IPPROTO_UDP,	udp6,	CTLFLAG_RW, 0,	"UDP6");
+SYSCTL_NODE(_net_inet6,	IPPROTO_TCP,	tcp6,	CTLFLAG_RW, 0,	"TCP6");
+#ifdef IPSEC
+SYSCTL_NODE(_net_inet6,	IPPROTO_ESP,	ipsec6,	CTLFLAG_RW, 0,	"IPSEC6");
+#endif /* IPSEC */
+
+/* net.inet6.ip6 */
+static int
+sysctl_ip6_forwarding SYSCTL_HANDLER_ARGS
+{
+	int error = 0;
+	int old_ip6_forwarding;
+	int changed;
+
+	error = SYSCTL_OUT(req, arg1, sizeof(int));
+	if (error || !req->newptr)
+		return (error);
+	old_ip6_forwarding = ip6_forwarding;
+	error = SYSCTL_IN(req, arg1, sizeof(int));
+	if (error != 0)
+		return (error);
+	changed = (ip6_forwarding ? 1 : 0) ^ (old_ip6_forwarding ? 1 : 0);
+	if (changed == 0)
+		return (error);
+	if (ip6_forwarding != 0) {	/* host becomes router */
+		int s = splnet();
+		struct nd_prefix *pr, *next;
+
+		for (pr = nd_prefix.lh_first; pr; pr = next) {
+			next = pr->ndpr_next;
+			if (!IN6_IS_ADDR_UNSPECIFIED(&pr->ndpr_addr))
+				in6_ifdel(pr->ndpr_ifp, &pr->ndpr_addr);
+			prelist_remove(pr);
+		}
+		splx(s);
+	} else {			/* router becomes host */
+		struct socket so;
+
+		/* XXX: init dummy so */
+		bzero(&so, sizeof(so));
+		while(!LIST_EMPTY(&rr_prefix))
+			delete_each_prefix(&so, LIST_FIRST(&rr_prefix),
+					   PR_ORIG_KERNEL);
+	}
+
+	return (error);
+}
+
+SYSCTL_OID(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
+	   CTLTYPE_INT|CTLFLAG_RW, &ip6_forwarding, 0, sysctl_ip6_forwarding,
+	   "I", "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
+	redirect, CTLFLAG_RW,		&ip6_sendredirects,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM,
+	hlim, CTLFLAG_RW,		&ip6_defhlim,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
+	maxfragpackets, CTLFLAG_RW,	&ip6_maxfragpackets,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
+	accept_rtadv, CTLFLAG_RW,	&ip6_accept_rtadv,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH,
+	keepfaith, CTLFLAG_RW,		&ip6_keepfaith,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
+	log_interval, CTLFLAG_RW,	&ip6_log_interval,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
+	hdrnestlimit, CTLFLAG_RW,	&ip6_hdrnestlimit,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT,
+	dad_count, CTLFLAG_RW,	&ip6_dad_count,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
+	auto_flowlabel, CTLFLAG_RW,	&ip6_auto_flowlabel,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
+	defmcasthlim, CTLFLAG_RW,	&ip6_defmcasthlim,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
+	gifhlim, CTLFLAG_RW,	&ip6_gif_hlim,			0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
+	use_deprecated, CTLFLAG_RW,	&ip6_use_deprecated,	0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE,
+	rr_prune, CTLFLAG_RW,	&ip6_rr_prune,			0, "");
+SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAPPED_ADDR,
+	mapped_addr, CTLFLAG_RW,	&ip6_mapped_addr_on,	0, "");
+
+/* net.inet6.icmp6 */
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
+	rediraccept, CTLFLAG_RW,	&icmp6_rediraccept,	0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
+	redirtimeout, CTLFLAG_RW,	&icmp6_redirtimeout,	0, "");
+SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD,
+	&icmp6stat, icmp6stat, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRRATELIMIT,
+	errratelimit, CTLFLAG_RW,	&icmp6errratelim,	0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
+	nd6_prune, CTLFLAG_RW,		&nd6_prune,	0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
+	nd6_delay, CTLFLAG_RW,		&nd6_delay,	0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
+	nd6_umaxtries, CTLFLAG_RW,	&nd6_umaxtries,	0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
+	nd6_mmaxtries, CTLFLAG_RW,	&nd6_mmaxtries,	0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
+	nd6_useloopback, CTLFLAG_RW,	&nd6_useloopback, 0, "");
+SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PROXYALL,
+	nd6_proxyall, CTLFLAG_RW,	&nd6_proxyall, 0, "");