in6_proto.c

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#endif /* !OpenBSD */
#endif /* IPSEC */
#ifdef INET
{ SOCK_RAW,	&inet6domain,	IPPROTO_IPV4,	PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  encap6_input,	rip6_output, 	encap6_ctlinput, rip6_ctloutput,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  0,
#else
  rip6_usrreq,
#endif
  encap_init,	0,		0,		0,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  &rip6_usrreqs
#endif
},
#endif /* INET */
{ SOCK_RAW,	&inet6domain,	IPPROTO_IPV6,	PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  encap6_input, rip6_output,	encap6_ctlinput, rip6_ctloutput,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  0,
#else
  rip6_usrreq,
#endif
  encap_init,	0,		0,		0,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  &rip6_usrreqs
#endif
},
#if defined(__NetBSD__) && defined(ISO)
{ SOCK_RAW,	&inet6domain,	IPPROTO_EON,	PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  encap6_input,	rip6_output,	encap6_ctlinput, rip6_ctloutput,
  rip6_usrreq,	/* XXX */
  encap_init,	0,		0,		0,
},
#endif
{ SOCK_RAW,     &inet6domain,	IPPROTO_PIM,	PR_ATOMIC|PR_ADDR|PR_LASTHDR,
  pim6_input,	rip6_output,	0,              rip6_ctloutput,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  0,
#else
  rip6_usrreq,
#endif
  0,            0,              0,              0,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  &rip6_usrreqs
# endif
},
/* raw wildcard */
{ SOCK_RAW,	&inet6domain,	0,		PR_ATOMIC|PR_ADDR,
  rip6_input,	rip6_output,	0,		rip6_ctloutput,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  0, 0,
#else
  rip6_usrreq, rip6_init,
#endif
  0,		0,		0,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  &rip6_usrreqs
#endif
},
};

#ifdef MIP6
struct ip6protosw mip6_tunnel_protosw =
{ SOCK_RAW,	&inet6domain,	IPPROTO_IPV6,	PR_ATOMIC|PR_ADDR,
  mip6_tunnel_input, rip6_output,	0,	rip6_ctloutput,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  0,
#else
  rip6_usrreq,
#endif
  0,            0,              0,              0,
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
  &rip6_usrreqs
#endif
};
#endif /* MIP6 */

#ifdef __FreeBSD__
extern int in6_inithead __P((void **, int));
#endif

struct domain inet6domain =
    { AF_INET6, "internet6", 0, 0, 0,
      (struct protosw *)inet6sw,
      (struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 0,
#ifdef __FreeBSD__
      in6_inithead,
#else
#ifdef RADIX_ART
      rn_art_inithead,
#elif defined(RADIX_MPATH)
      rn_mpath_inithead,
#else
      rn_inithead,
#endif
#endif
      offsetof(struct sockaddr_in6, sin6_addr) << 3,
      sizeof(struct sockaddr_in6) };

#ifdef __FreeBSD__
DOMAIN_SET(inet6);
#endif

/*
 * 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 = 1; // was 0;	/* "IPV6FORWARDING ? 0 : 1" is dangerous */
#if defined(__FreeBSD__) && __FreeBSD__ >= 4
int	ip6_maxfragpackets;	/* initialized in frag6.c:frag6_init() */
#else
int	ip6_maxfragpackets = 200;
#endif
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;
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. */
#if defined(__NetBSD__)
int	ip6_v6only = 1;
#elif defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ == 2) || (defined(__bsdi__) && _BSDI_VERSION < 199802) || defined(TCP6)
const int	ip6_v6only = 1;
#else
int	ip6_v6only = 0;
#endif

u_int32_t ip6_id = 0UL;
int	ip6_keepfaith = 0;
time_t	ip6_log_time = (time_t)0L;

/* icmp6 */
#ifndef __bsdi__
/*
 * BSDI4 defines these variables in in_proto.c...
 * XXX: what if we don't define INET? Should we define pmtu6_expire
 * or so? ([e-mail] 19990310)
 */
int pmtu_expire = 60*10;
int pmtu_probe = 60*2;
#endif

/* 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 */
int	icmp6errppslim = 100;		/* 100pps */
int	icmp6_nodeinfo = 3;		/* enable/disable NI response */

#ifdef TCP6
/* TCP on IP6 parameters */
int	tcp6_sendspace = 1024 * 8;
int	tcp6_recvspace = 1024 * 8;
int 	tcp6_mssdflt = TCP6_MSS;
int 	tcp6_rttdflt = TCP6TV_SRTTDFLT / PR_SLOWHZ;
int	tcp6_do_rfc1323 = 1;
int	tcp6_conntimeo = TCP6TV_KEEP_INIT;	/* initial connection timeout */
int	tcp6_43maxseg = 0;
int	tcp6_pmtu = 0;

/*
 * Parameters for keepalive option.
 * Connections for which SO_KEEPALIVE is set will be probed
 * after being idle for a time of tcp6_keepidle (in units of PR_SLOWHZ).
 * Starting at that time, the connection is probed at intervals
 * of tcp6_keepintvl (same units) until a response is received
 * or until tcp6_keepcnt probes have been made, at which time
 * the connection is dropped.  Note that a tcp6_keepidle value
 * under 2 hours is nonconformant with RFC-1122, Internet Host Requirements.
 */
int	tcp6_keepidle = TCP6TV_KEEP_IDLE;	/* time before probing idle */
int	tcp6_keepintvl = TCP6TV_KEEPINTVL;	/* interval betwn idle probes */
int	tcp6_keepcnt = TCP6TV_KEEPCNT;		/* max idle probes */
int	tcp6_maxpersistidle = TCP6TV_KEEP_IDLE;	/* max idle time in persist */

#ifndef INET_SERVER
#define	TCP6_LISTEN_HASH_SIZE	17
#define	TCP6_CONN_HASH_SIZE	97
#define	TCP6_SYN_HASH_SIZE	293
#define	TCP6_SYN_BUCKET_SIZE	35
#else
#define	TCP6_LISTEN_HASH_SIZE	97
#define	TCP6_CONN_HASH_SIZE	9973
#define	TCP6_SYN_HASH_SIZE	997
#define	TCP6_SYN_BUCKET_SIZE	35
#endif
int	tcp6_listen_hash_size = TCP6_LISTEN_HASH_SIZE;
int	tcp6_conn_hash_size = TCP6_CONN_HASH_SIZE;
struct	tcp6_hash_list tcp6_listen_hash[TCP6_LISTEN_HASH_SIZE],
	tcp6_conn_hash[TCP6_CONN_HASH_SIZE];

int	tcp6_syn_cache_size = TCP6_SYN_HASH_SIZE;
int	tcp6_syn_cache_limit = TCP6_SYN_HASH_SIZE*TCP6_SYN_BUCKET_SIZE;
int	tcp6_syn_bucket_limit = 3*TCP6_SYN_BUCKET_SIZE;
struct	syn_cache_head6 tcp6_syn_cache[TCP6_SYN_HASH_SIZE];
struct	syn_cache_head6 *tcp6_syn_cache_first;
int	tcp6_syn_cache_interval = 8;	/* runs timer every 4 seconds */
int	tcp6_syn_cache_timeo = TCP6TV_KEEP_INIT;

/*
 * Parameters for computing a desirable data segment size
 * given an upper bound (either interface MTU, or peer's MSS option)_.
 * As applications tend to use a buffer size that is a multiple
 * of kilobytes, try for something that divides evenly. However,
 * do not round down too much.
 *
 * Round segment size down to a multiple of TCP6_ROUNDSIZE if this
 * does not result in lowering by more than (size/TCP6_ROUNDFRAC).
 * For example, round 536 to 512.  Older versions of the system
 * effectively used MCLBYTES (1K or 2K) as TCP6_ROUNDSIZE, with
 * a value of 1 for TCP6_ROUNDFRAC (eliminating its effect).
 * We round to a multiple of 256 for SLIP.
 */
#ifndef	TCP6_ROUNDSIZE
#define	TCP6_ROUNDSIZE	256	/* round to multiple of 256 */
#endif
#ifndef	TCP6_ROUNDFRAC
#define	TCP6_ROUNDFRAC	10	/* round down at most N/10, or 10% */
#endif

int	tcp6_roundsize = TCP6_ROUNDSIZE;
int	tcp6_roundfrac = TCP6_ROUNDFRAC;
#endif /* TCP6 */

/* 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 */

#ifdef CYGPKG_NET_FREEBSD_SYSCTL
/* net.inet6.ip6 */
static int
sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
{
	int error = 0;
	int old;

	error = SYSCTL_OUT(req, arg1, sizeof(int));
	if (error || !req->newptr)
		return (error);
	old = ip6_temp_preferred_lifetime;
	error = SYSCTL_IN(req, arg1, sizeof(int));
	if (ip6_temp_preferred_lifetime <
	    ip6_desync_factor + ip6_temp_regen_advance) {
		ip6_temp_preferred_lifetime = old;
		return(EINVAL);
	}
	return(error);
}

static int
sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
{
	int error = 0;
	int old;

	error = SYSCTL_OUT(req, arg1, sizeof(int));
	if (error || !req->newptr)
		return (error);
	old = ip6_temp_valid_lifetime;
	error = SYSCTL_IN(req, arg1, sizeof(int));
	if (ip6_temp_valid_lifetime < ip6_temp_preferred_lifetime) {
		ip6_temp_preferred_lifetime = old;
		return(EINVAL);
	}
	return(error);
}
#endif
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING,
	forwarding, CTLFLAG_RW, 	&ip6_forwarding,	0, "");
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_STRUCT(_net_inet6_ip6, IPV6CTL_STATS, stats, CTLFLAG_RD,
	&ip6stat, ip6stat, "");
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, "");
#ifndef __ECOS /* We don't support gif at the moment */
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
	gifhlim, CTLFLAG_RW,	&ip6_gif_hlim,			0, "");
#endif
SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
	kame_version, CTLFLAG_RD,	__KAME_VERSION,		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_USETEMPADDR,
	use_tempaddr, CTLFLAG_RW, &ip6_use_tempaddr,		0, "");
SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
	   CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_preferred_lifetime, 0,
	   sysctl_ip6_temppltime, "I", "");
SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
	   CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_valid_lifetime, 0,
	   sysctl_ip6_tempvltime, "I", "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY,
	v6only,	CTLFLAG_RW,	&ip6_v6only,			0, "");
SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
	auto_linklocal, CTLFLAG_RW, &ip6_auto_linklocal,	0, "");
SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD,
	&rip6stat, rip6stat, "");

/* 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_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_NODEINFO,
	nodeinfo, CTLFLAG_RW,	&icmp6_nodeinfo,	0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
	errppslimit, CTLFLAG_RW,	&icmp6errppslim,	0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
	nd6_maxnudhint, CTLFLAG_RW,	&nd6_maxnudhint, 0, "");
SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
	nd6_debug, CTLFLAG_RW,	&nd6_debug,		0, "");