in6.h

eCos操作系统源码

#define IPV6_ADDR_SCOPE_NODELOCAL	0x01
#define IPV6_ADDR_SCOPE_INTFACELOCAL	0x01
#define IPV6_ADDR_SCOPE_LINKLOCAL	0x02
#define IPV6_ADDR_SCOPE_SITELOCAL	0x05
#define IPV6_ADDR_SCOPE_ORGLOCAL	0x08	/* just used in this file */
#define IPV6_ADDR_SCOPE_GLOBAL		0x0e
#else
#define __IPV6_ADDR_SCOPE_NODELOCAL	0x01
#define __IPV6_ADDR_SCOPE_INTFACELOCAL	0x01
#define __IPV6_ADDR_SCOPE_LINKLOCAL	0x02
#define __IPV6_ADDR_SCOPE_SITELOCAL	0x05
#define __IPV6_ADDR_SCOPE_ORGLOCAL	0x08	/* just used in this file */
#define __IPV6_ADDR_SCOPE_GLOBAL	0x0e
#endif

/*
 * Unicast Scope
 * Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
 */
#define IN6_IS_ADDR_LINKLOCAL(a)	\
	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
#define IN6_IS_ADDR_SITELOCAL(a)	\
	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))

/*
 * Multicast
 */
#define IN6_IS_ADDR_MULTICAST(a)	((a)->s6_addr[0] == 0xff)

#ifdef _KERNEL	/* XXX nonstandard */
#define IPV6_ADDR_MC_SCOPE(a)		((a)->s6_addr[1] & 0x0f)
#else
#define __IPV6_ADDR_MC_SCOPE(a)		((a)->s6_addr[1] & 0x0f)
#endif

/*
 * Multicast Scope
 */
#ifdef _KERNEL	/* refers nonstandard items */
#define IN6_IS_ADDR_MC_NODELOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
#define IN6_IS_ADDR_MC_INTFACELOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_INTFACELOCAL))
#define IN6_IS_ADDR_MC_LINKLOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
#define IN6_IS_ADDR_MC_SITELOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) && 	\
	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
#define IN6_IS_ADDR_MC_ORGLOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
#define IN6_IS_ADDR_MC_GLOBAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
#else
#define IN6_IS_ADDR_MC_NODELOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL))
#define IN6_IS_ADDR_MC_LINKLOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL))
#define IN6_IS_ADDR_MC_SITELOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) && 	\
	 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL))
#define IN6_IS_ADDR_MC_ORGLOCAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL))
#define IN6_IS_ADDR_MC_GLOBAL(a)	\
	(IN6_IS_ADDR_MULTICAST(a) &&	\
	 (__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL))
#endif

#ifdef _KERNEL	/* nonstandard */
/*
 * KAME Scope
 */
#define IN6_IS_SCOPE_LINKLOCAL(a)	\
	((IN6_IS_ADDR_LINKLOCAL(a)) ||	\
	 (IN6_IS_ADDR_MC_LINKLOCAL(a)))

#if (defined(__FreeBSD__) && __FreeBSD__ >= 3)
#define IFA6_IS_DEPRECATED(a) \
	((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
	 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
	 (a)->ia6_lifetime.ia6t_pltime)
#define IFA6_IS_INVALID(a) \
	((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
	 (u_int32_t)((time_second - (a)->ia6_updatetime)) > \
	 (a)->ia6_lifetime.ia6t_vltime)
#else
#define IFA6_IS_DEPRECATED(a) \
	((a)->ia6_lifetime.ia6t_pltime != ND6_INFINITE_LIFETIME && \
	 (u_int32_t)((time.tv_sec - (a)->ia6_updatetime)) > \
	 (a)->ia6_lifetime.ia6t_pltime)
#define IFA6_IS_INVALID(a) \
	((a)->ia6_lifetime.ia6t_vltime != ND6_INFINITE_LIFETIME && \
	 (u_int32_t)((time.tv_sec - (a)->ia6_updatetime)) > \
	 (a)->ia6_lifetime.ia6t_vltime)
#endif
#endif /* _KERNEL */

/*
 * IP6 route structure
 */
#if !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(__FreeBSD__)
#ifndef _XOPEN_SOURCE
#ifndef NEW_STRUCT_ROUTE
struct route_in6 {
	struct	rtentry *ro_rt;
	struct	sockaddr_in6 ro_dst;
};
#endif /* !NEW_STRUCT_ROUTE */
#endif
#endif

/*
 * Options for use with [gs]etsockopt at the IPV6 level.
 * First word of comment is data type; bool is stored in int.
 */
/* no hdrincl */
#if 0 /* the followings are relic in IPv4 and hence are disabled */
#define IPV6_OPTIONS		1  /* buf/ip6_opts; set/get IP6 options */
#define IPV6_RECVOPTS		5  /* bool; receive all IP6 opts w/dgram */
#define IPV6_RECVRETOPTS	6  /* bool; receive IP6 opts for response */
#define IPV6_RECVDSTADDR	7  /* bool; receive IP6 dst addr w/dgram */
#define IPV6_RETOPTS		8  /* ip6_opts; set/get IP6 options */
#endif
#define IPV6_SOCKOPT_RESERVED1	3  /* reserved for future use */
#define IPV6_UNICAST_HOPS	4  /* int; IP6 hops */
#define IPV6_MULTICAST_IF	9  /* u_int; set/get IP6 multicast i/f */
#define IPV6_MULTICAST_HOPS	10 /* int; set/get IP6 multicast hops */
#define IPV6_MULTICAST_LOOP	11 /* u_int; set/get IP6 multicast loopback */
#define IPV6_JOIN_GROUP		12 /* ip6_mreq; join a group membership */
#define IPV6_LEAVE_GROUP	13 /* ip6_mreq; leave a group membership */
#define IPV6_PORTRANGE		14 /* int; range to choose for unspec port */
#define ICMP6_FILTER		18 /* icmp6_filter; icmp6 filter */
/* RFC2292 options */
#ifdef _KERNEL
#define IPV6_2292PKTINFO	19 /* bool; send/recv if, src/dst addr */
#define IPV6_2292HOPLIMIT	20 /* bool; hop limit */
#define IPV6_2292NEXTHOP	21 /* bool; next hop addr */
#define IPV6_2292HOPOPTS	22 /* bool; hop-by-hop option */
#define IPV6_2292DSTOPTS	23 /* bool; destinaion option */
#define IPV6_2292RTHDR		24 /* bool; routing header */
#define IPV6_2292PKTOPTIONS	25 /* buf/cmsghdr; set/get IPv6 options */
#endif

#define IPV6_CHECKSUM		26 /* int; checksum offset for raw socket */
#define IPV6_V6ONLY		27 /* bool; make AF_INET6 sockets v6 only */
#ifndef _KERNEL
#define IPV6_BINDV6ONLY		IPV6_V6ONLY
#endif

#if 1 /* IPSEC */
#define IPV6_IPSEC_POLICY	28 /* struct; get/set security policy */
#endif
#define IPV6_FAITH		29 /* bool; accept FAITH'ed connections */

#if 1 /* IPV6FIREWALL */
#define IPV6_FW_ADD		30 /* add a firewall rule to chain */
#define IPV6_FW_DEL		31 /* delete a firewall rule from chain */
#define IPV6_FW_FLUSH		32 /* flush firewall rule chain */
#define IPV6_FW_ZERO		33 /* clear single/all firewall counter(s) */
#define IPV6_FW_GET		34 /* get entire firewall rule chain */
#endif

/* new socket options introduced in RFC2292bis */
#define IPV6_RTHDRDSTOPTS	35 /* ip6_dest; send dst option before rthdr */

#define IPV6_RECVPKTINFO	36 /* bool; recv if, dst addr */
#define IPV6_RECVHOPLIMIT	37 /* bool; recv hop limit */
#define IPV6_RECVRTHDR		38 /* bool; recv routing header */
#define IPV6_RECVHOPOPTS	39 /* bool; recv hop-by-hop option */
#define IPV6_RECVDSTOPTS	40 /* bool; recv dst option after rthdr */
#ifdef _KERNEL
#define IPV6_RECVRTHDRDSTOPTS	41 /* bool; recv dst option before rthdr */
#endif

#define IPV6_USE_MIN_MTU	42 /* bool; send packets at the minimum MTU */
#define IPV6_RECVPATHMTU	43 /* bool; notify an according MTU */

#define IPV6_PATHMTU		44 /* mtuinfo; get the current path MTU (sopt),
				      4 bytes int; MTU notification (cmsg) */
#define IPV6_REACHCONF		45 /* no data; ND reachability confirm
				      (cmsg only) */

/* more new socket options introduced in RFC2292bis */
#define IPV6_PKTINFO		46 /* in6_pktinfo; send if, src addr */
#define IPV6_HOPLIMIT		47 /* int; send hop limit */
#define IPV6_NEXTHOP		48 /* sockaddr; next hop addr */
#define IPV6_HOPOPTS		49 /* ip6_hbh; send hop-by-hop option */
#define IPV6_DSTOPTS		50 /* ip6_dest; send dst option befor rthdr */
#define IPV6_RTHDR		51 /* ip6_rthdr; send routing header */
#if 0
#define IPV6_PKTOPTIONS		52 /* buf/cmsghdr; set/get IPv6 options */
				   /* obsoleted by 2292bis */
#endif

#ifdef __OpenBSD__
#define IPV6_AUTH_LEVEL		53   /* int; authentication used */
#define IPV6_ESP_TRANS_LEVEL	54   /* int; transport encryption */
#define IPV6_ESP_NETWORK_LEVEL	55   /* int; full-packet encryption */
#define IPSEC6_OUTSA		56   /* set the outbound SA for a socket */
#endif

#define IPV6_RECVTCLASS		57 /* bool; recv traffic class values */
#ifdef _KERNEL
#define IPV6_OTCLASS		58 /* u_int8_t; send traffic class value */
#endif
#define IPV6_AUTOFLOWLABEL	59 /* bool; attach flowlabel automagically */

#ifdef __OpenBSD__
#define IPV6_IPCOMP_LEVEL	60   /* int; compression */
#endif

#define IPV6_TCLASS		61 /* int; send traffic class value */
#define IPV6_DONTFRAG		62 /* bool; disable IPv6 fragmentation */

/* to define items, should talk with KAME guys first, for *BSD compatibility */

#define IPV6_RTHDR_LOOSE     0 /* this hop need not be a neighbor. XXX old spec */
#define IPV6_RTHDR_STRICT    1 /* this hop must be a neighbor. XXX old spec */
#define IPV6_RTHDR_TYPE_0    0 /* IPv6 routing header type 0 */

/*
 * Defaults and limits for options
 */
#define IPV6_DEFAULT_MULTICAST_HOPS 1	/* normally limit m'casts to 1 hop */
#define IPV6_DEFAULT_MULTICAST_LOOP 1	/* normally hear sends if a member */

/*
 * Argument structure for IPV6_JOIN_GROUP and IPV6_LEAVE_GROUP.
 */
struct ipv6_mreq {
	struct in6_addr	ipv6mr_multiaddr;
	unsigned int	ipv6mr_interface;
};

/*
 * IPV6_PKTINFO: Packet information(RFC2292 sec 5)
 */
struct in6_pktinfo {
	struct in6_addr	ipi6_addr;	/* src/dst IPv6 address */
	unsigned int	ipi6_ifindex;	/* send/recv interface index */
};

/*
 * Control structure for IPV6_RECVPATHMTU socket option.
 * Note that this structure is not fully conformant to rfc2292bis-02.
 * However, since how to tell the destination of the path (or the path itself)
 * to the application is not determined, we use our original structure.  
 */
struct ip6_mtuinfo {
	struct sockaddr_in6 ip6m_addr;	/* or sockaddr_storage? */
	u_int32_t ip6m_mtu;
};

/*
 * Argument for IPV6_PORTRANGE:
 * - which range to search when port is unspecified at bind() or connect()
 */
#define	IPV6_PORTRANGE_DEFAULT	0	/* default range */
#define	IPV6_PORTRANGE_HIGH	1	/* "high" - request firewall bypass */
#define	IPV6_PORTRANGE_LOW	2	/* "low" - vouchsafe security */

#ifndef _XOPEN_SOURCE
/*
 * Definitions for inet6 sysctl operations.
 *
 * Third level is protocol number.
 * Fourth level is desired variable within that protocol.
 */
#define IPV6PROTO_MAXID	(IPPROTO_PIM + 1)	/* don't list to IPV6PROTO_MAX */

#define CTL_IPV6PROTO_NAMES { \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, \
	{ "tcp6", CTLTYPE_NODE }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ "udp6", CTLTYPE_NODE }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, \
	{ "ip6", CTLTYPE_NODE }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, \
	{ "ipsec6", CTLTYPE_NODE }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ 0, 0 }, \
	{ "icmp6", CTLTYPE_NODE }, \
	{ 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
	{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \