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NetBSD/sys/netinet6/in6.h
dyoung c5d5f7697a Make ifconfig(8) set and display preference numbers for IPv6 
addresses.  Make the kernel support SIOC[SG]IFADDRPREF for IPv6
interface addresses.

In in6ifa_ifpforlinklocal(), consult preference numbers before
making an otherwise arbitrary choice of in6_ifaddr.  Otherwise,
preference numbers are *not* consulted by the kernel, but that will
be rather easy for somebody with a little bit of free time to fix.

Please note that setting the preference number for a link-local
IPv6 address does not work right, yet, but that ought to be fixed
soon.

In support of the changes above,

1 Add a method to struct domain for "externalizing" a sockaddr, and
  provide an implementation for IPv6.  Expect more work in this area: it
  may be more proper to say that the IPv6 implementation "internalizes"
  a sockaddr.  Add sockaddr_externalize().

2 Add a subroutine, sofamily(), that returns a struct socket's address
  family or AF_UNSPEC.

3 Make a lot of IPv4-specific code generic, and move it from
  sys/netinet/ to sys/net/ for re-use by IPv6 parts of the kernel and
  ifconfig(8).
2009-09-11 22:06:29 +00:00

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/* $NetBSD: in6.h,v 1.68 2009/09/11 22:06:29 dyoung Exp $ */
/* $KAME: in6.h,v 1.83 2001/03/29 02:55:07 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
* 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.
*/
/*
* Copyright (c) 1982, 1986, 1990, 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. 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.h 8.3 (Berkeley) 1/3/94
*/
#ifndef _NETINET6_IN6_H_
#define _NETINET6_IN6_H_
#ifndef __KAME_NETINET_IN_H_INCLUDED_
#error "do not include netinet6/in6.h directly, include netinet/in.h. see RFC2553"
#endif
#include <sys/socket.h>
/*
* Identification of the network protocol stack
* for *BSD-current/release: http://www.kame.net/dev/cvsweb.cgi/kame/COVERAGE
* has the table of implementation/integration differences.
*/
#define __KAME__
#define __KAME_VERSION "NetBSD-current"
/*
* Local port number conventions:
*
* Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
* unless a kernel is compiled with IPNOPRIVPORTS defined.
*
* When a user does a bind(2) or connect(2) with a port number of zero,
* a non-conflicting local port address is chosen.
*
* The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
* that is settable by sysctl(3); net.inet.ip.anonportmin and
* net.inet.ip.anonportmax respectively.
*
* A user may set the IPPROTO_IP option IP_PORTRANGE to change this
* default assignment range.
*
* The value IP_PORTRANGE_DEFAULT causes the default behavior.
*
* The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
* and exists only for FreeBSD compatibility purposes.
*
* The value IP_PORTRANGE_LOW changes the range to the "low" are
* that is (by convention) restricted to privileged processes.
* This convention is based on "vouchsafe" principles only.
* It is only secure if you trust the remote host to restrict these ports.
* The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
*/
#if defined(_NETBSD_SOURCE)
#define IPV6PORT_RESERVED 1024
#define IPV6PORT_ANONMIN 49152
#define IPV6PORT_ANONMAX 65535
#define IPV6PORT_RESERVEDMIN 600
#define IPV6PORT_RESERVEDMAX (IPV6PORT_RESERVED-1)
#endif
/*
* IPv6 address
*/
struct in6_addr {
union {
__uint8_t __u6_addr8[16];
__uint16_t __u6_addr16[8];
uint32_t __u6_addr32[4];
} __u6_addr; /* 128-bit IP6 address */
};
#define s6_addr __u6_addr.__u6_addr8
#ifdef _KERNEL /* XXX nonstandard */
#define s6_addr8 __u6_addr.__u6_addr8
#define s6_addr16 __u6_addr.__u6_addr16
#define s6_addr32 __u6_addr.__u6_addr32
#endif
#define INET6_ADDRSTRLEN 46
/*
* Socket address for IPv6
*/
#if defined(_NETBSD_SOURCE)
#define SIN6_LEN
#endif
struct sockaddr_in6 {
uint8_t sin6_len; /* length of this struct(socklen_t)*/
sa_family_t sin6_family; /* AF_INET6 (sa_family_t) */
in_port_t sin6_port; /* Transport layer port */
uint32_t sin6_flowinfo; /* IP6 flow information */
struct in6_addr sin6_addr; /* IP6 address */
uint32_t sin6_scope_id; /* scope zone index */
};
/*
* Local definition for masks
*/
#ifdef _KERNEL /* XXX nonstandard */
#define IN6MASK0 {{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}}
#define IN6MASK32 {{{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6MASK64 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6MASK96 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6MASK128 {{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }}}
#endif
#ifdef _KERNEL
extern const struct sockaddr_in6 sa6_any;
extern const struct in6_addr in6mask0;
extern const struct in6_addr in6mask32;
extern const struct in6_addr in6mask64;
extern const struct in6_addr in6mask96;
extern const struct in6_addr in6mask128;
#endif /* _KERNEL */
/*
* Macros started with IPV6_ADDR is KAME local
*/
#ifdef _KERNEL /* XXX nonstandard */
#if BYTE_ORDER == BIG_ENDIAN
#define IPV6_ADDR_INT32_ONE 1
#define IPV6_ADDR_INT32_TWO 2
#define IPV6_ADDR_INT32_MNL 0xff010000
#define IPV6_ADDR_INT32_MLL 0xff020000
#define IPV6_ADDR_INT32_SMP 0x0000ffff
#define IPV6_ADDR_INT16_ULL 0xfe80
#define IPV6_ADDR_INT16_USL 0xfec0
#define IPV6_ADDR_INT16_MLL 0xff02
#elif BYTE_ORDER == LITTLE_ENDIAN
#define IPV6_ADDR_INT32_ONE 0x01000000
#define IPV6_ADDR_INT32_TWO 0x02000000
#define IPV6_ADDR_INT32_MNL 0x000001ff
#define IPV6_ADDR_INT32_MLL 0x000002ff
#define IPV6_ADDR_INT32_SMP 0xffff0000
#define IPV6_ADDR_INT16_ULL 0x80fe
#define IPV6_ADDR_INT16_USL 0xc0fe
#define IPV6_ADDR_INT16_MLL 0x02ff
#endif
#endif
/*
* Definition of some useful macros to handle IP6 addresses
*/
#define IN6ADDR_ANY_INIT \
{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
#define IN6ADDR_LOOPBACK_INIT \
{{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
#define IN6ADDR_NODELOCAL_ALLNODES_INIT \
{{{ 0xff, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
#define IN6ADDR_LINKLOCAL_ALLNODES_INIT \
{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }}}
#define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \
{{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }}}
extern const struct in6_addr in6addr_any;
extern const struct in6_addr in6addr_loopback;
extern const struct in6_addr in6addr_nodelocal_allnodes;
extern const struct in6_addr in6addr_linklocal_allnodes;
extern const struct in6_addr in6addr_linklocal_allrouters;
#define IN6_ARE_ADDR_EQUAL(a, b) \
(memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
/*
* Unspecified
*/
#define IN6_IS_ADDR_UNSPECIFIED(a) \
((a)->__u6_addr.__u6_addr32[0] == 0 && \
(a)->__u6_addr.__u6_addr32[1] == 0 && \
(a)->__u6_addr.__u6_addr32[2] == 0 && \
(a)->__u6_addr.__u6_addr32[3] == 0)
/*
* Loopback
*/
#define IN6_IS_ADDR_LOOPBACK(a) \
((a)->__u6_addr.__u6_addr32[0] == 0 && \
(a)->__u6_addr.__u6_addr32[1] == 0 && \
(a)->__u6_addr.__u6_addr32[2] == 0 && \
(a)->__u6_addr.__u6_addr32[3] == ntohl(1))
/*
* IPv4 compatible
*/
#define IN6_IS_ADDR_V4COMPAT(a) \
((a)->__u6_addr.__u6_addr32[0] == 0 && \
(a)->__u6_addr.__u6_addr32[1] == 0 && \
(a)->__u6_addr.__u6_addr32[2] == 0 && \
(a)->__u6_addr.__u6_addr32[3] != 0 && \
(a)->__u6_addr.__u6_addr32[3] != ntohl(1))
/*
* Mapped
*/
#define IN6_IS_ADDR_V4MAPPED(a) \
((a)->__u6_addr.__u6_addr32[0] == 0 && \
(a)->__u6_addr.__u6_addr32[1] == 0 && \
(a)->__u6_addr.__u6_addr32[2] == ntohl(0x0000ffff))
/*
* KAME Scope Values
*/
#ifdef _KERNEL /* XXX nonstandard */
#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_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)))
#define IN6_IS_SCOPE_EMBEDDABLE(__a) \
(IN6_IS_SCOPE_LINKLOCAL(__a) || IN6_IS_ADDR_MC_INTFACELOCAL(__a))
#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)
#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
/* These are deprecated non-standard options which are no longer supported. */
#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 */
#if defined(_NETBSD_SOURCE)
#define ICMP6_FILTER 18 /* icmp6_filter; icmp6 filter */
#endif
/* 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; destination 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 */
#if 1 /* IPSEC */
#define IPV6_IPSEC_POLICY 28 /* struct; get/set security policy */
#endif
#define IPV6_FAITH 29 /* bool; accept FAITH'ed connections */
/* new socket options introduced in RFC3542 */
#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) */
/* more new socket options introduced in RFC3542 */
#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 */
#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_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.
*/
struct ip6_mtuinfo {
struct sockaddr_in6 ip6m_addr; /* or sockaddr_storage? */
uint32_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 */
#if defined(_NETBSD_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 }, \
{ 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 }, { 0, 0 }, { 0, 0 }, \
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "pim6", CTLTYPE_NODE }, \
}
/*
* Names for IP sysctl objects
*/
#define IPV6CTL_FORWARDING 1 /* act as router */
#define IPV6CTL_SENDREDIRECTS 2 /* may send redirects when forwarding*/
#define IPV6CTL_DEFHLIM 3 /* default Hop-Limit */
#ifdef notyet
#define IPV6CTL_DEFMTU 4 /* default MTU */
#endif
#define IPV6CTL_FORWSRCRT 5 /* forward source-routed dgrams */
#define IPV6CTL_STATS 6 /* stats */
#define IPV6CTL_MRTSTATS 7 /* multicast forwarding stats */
#define IPV6CTL_MRTPROTO 8 /* multicast routing protocol */
#define IPV6CTL_MAXFRAGPACKETS 9 /* max packets reassembly queue */
#define IPV6CTL_SOURCECHECK 10 /* verify source route and intf */
#define IPV6CTL_SOURCECHECK_LOGINT 11 /* minimume logging interval */
#define IPV6CTL_ACCEPT_RTADV 12
#define IPV6CTL_KEEPFAITH 13
#define IPV6CTL_LOG_INTERVAL 14
#define IPV6CTL_HDRNESTLIMIT 15
#define IPV6CTL_DAD_COUNT 16
#define IPV6CTL_AUTO_FLOWLABEL 17
#define IPV6CTL_DEFMCASTHLIM 18
#define IPV6CTL_GIF_HLIM 19 /* default HLIM for gif encap packet */
#define IPV6CTL_KAME_VERSION 20
#define IPV6CTL_USE_DEPRECATED 21 /* use deprecated addr (RFC2462 5.5.4) */
#define IPV6CTL_RR_PRUNE 22 /* walk timer for router renumbering */
/* 23: reserved */
#define IPV6CTL_V6ONLY 24
/* 25 to 27: reserved */
#define IPV6CTL_ANONPORTMIN 28 /* minimum ephemeral port */
#define IPV6CTL_ANONPORTMAX 29 /* maximum ephemeral port */
#define IPV6CTL_LOWPORTMIN 30 /* minimum reserved port */
#define IPV6CTL_LOWPORTMAX 31 /* maximum reserved port */
/* 32 to 38: reserved */
#define IPV6CTL_USE_DEFAULTZONE 39 /* use default scope zone */
/* 40: reserved */
#define IPV6CTL_MAXFRAGS 41 /* max fragments */
#define IPV6CTL_IFQ 42 /* ip6intrq node */
/* New entries should be added here from current IPV6CTL_MAXID value. */
/* to define items, should talk with KAME guys first, for *BSD compatibility */
#define IPV6CTL_MAXID 43
#define IPV6CTL_NAMES { \
{ 0, 0 }, \
{ "forwarding", CTLTYPE_INT }, \
{ "redirect", CTLTYPE_INT }, \
{ "hlim", CTLTYPE_INT }, \
{ "mtu", CTLTYPE_INT }, \
{ "forwsrcrt", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT }, \
{ 0, 0 }, \
{ "mrtproto", CTLTYPE_INT }, \
{ "maxfragpackets", CTLTYPE_INT }, \
{ "sourcecheck", CTLTYPE_INT }, \
{ "sourcecheck_logint", CTLTYPE_INT }, \
{ "accept_rtadv", CTLTYPE_INT }, \
{ "keepfaith", CTLTYPE_INT }, \
{ "log_interval", CTLTYPE_INT }, \
{ "hdrnestlimit", CTLTYPE_INT }, \
{ "dad_count", CTLTYPE_INT }, \
{ "auto_flowlabel", CTLTYPE_INT }, \
{ "defmcasthlim", CTLTYPE_INT }, \
{ "gifhlim", CTLTYPE_INT }, \
{ "kame_version", CTLTYPE_STRING }, \
{ "use_deprecated", CTLTYPE_INT }, \
{ "rr_prune", CTLTYPE_INT }, \
{ 0, 0 }, \
{ "v6only", CTLTYPE_INT }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "anonportmin", CTLTYPE_INT }, \
{ "anonportmax", CTLTYPE_INT }, \
{ "lowportmin", CTLTYPE_INT }, \
{ "lowportmax", CTLTYPE_INT }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "maxfrags", CTLTYPE_INT }, \
{ "ifq", CTLTYPE_NODE }, \
}
#endif /* _NETBSD_SOURCE */
#ifdef _KERNEL
struct cmsghdr;
/*
* in6_cksum_phdr:
*
* Compute significant parts of the IPv6 checksum pseudo-header
* for use in a delayed TCP/UDP checksum calculation.
*
* Args:
*
* src Source IPv6 address
* dst Destination IPv6 address
* len htonl(proto-hdr-len)
* nxt htonl(next-proto-number)
*
* NOTE: We expect the src and dst addresses to be 16-bit
* aligned!
*/
static __inline u_int16_t __unused
in6_cksum_phdr(const struct in6_addr *src, const struct in6_addr *dst,
u_int32_t len, u_int32_t nxt)
{
u_int32_t sum = 0;
const u_int16_t *w;
/*LINTED*/
w = (const u_int16_t *) src;
sum += w[0];
if (!IN6_IS_SCOPE_LINKLOCAL(src))
sum += w[1];
sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
sum += w[6]; sum += w[7];
/*LINTED*/
w = (const u_int16_t *) dst;
sum += w[0];
if (!IN6_IS_SCOPE_LINKLOCAL(dst))
sum += w[1];
sum += w[2]; sum += w[3]; sum += w[4]; sum += w[5];
sum += w[6]; sum += w[7];
sum += (u_int16_t)(len >> 16) + (u_int16_t)(len /*& 0xffff*/);
sum += (u_int16_t)(nxt >> 16) + (u_int16_t)(nxt /*& 0xffff*/);
sum = (u_int16_t)(sum >> 16) + (u_int16_t)(sum /*& 0xffff*/);
if (sum > 0xffff)
sum -= 0xffff;
return (sum);
}
struct mbuf;
struct ifnet;
int sockaddr_in6_cmp(const struct sockaddr *, const struct sockaddr *);
struct sockaddr *sockaddr_in6_externalize(struct sockaddr *, socklen_t,
const struct sockaddr *);
int in6_cksum(struct mbuf *, u_int8_t, u_int32_t, u_int32_t);
void in6_delayed_cksum(struct mbuf *);
int in6_localaddr(const struct in6_addr *);
int in6_addrscope(const struct in6_addr *);
struct in6_ifaddr *in6_ifawithifp(struct ifnet *, struct in6_addr *);
extern void in6_if_up(struct ifnet *);
#ifndef __FreeBSD__
extern int in6_src_sysctl(void *, size_t *, void *, size_t);
#endif
extern void addrsel_policy_init(void);
extern u_char ip6_protox[];
#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
#define satocsin6(sa) ((const struct sockaddr_in6 *)(sa))
#define sin6tosa(sin6) ((struct sockaddr *)(sin6))
#define sin6tocsa(sin6) ((const struct sockaddr *)(sin6))
#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
static inline void
sockaddr_in6_init1(struct sockaddr_in6 *sin6, const struct in6_addr *addr,
in_port_t port, uint32_t flowinfo, uint32_t scope_id)
{
sin6->sin6_port = port;
sin6->sin6_flowinfo = flowinfo;
sin6->sin6_addr = *addr;
sin6->sin6_scope_id = scope_id;
}
static inline void
sockaddr_in6_init(struct sockaddr_in6 *sin6, const struct in6_addr *addr,
in_port_t port, uint32_t flowinfo, uint32_t scope_id)
{
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
sockaddr_in6_init1(sin6, addr, port, flowinfo, scope_id);
}
static inline struct sockaddr *
sockaddr_in6_alloc(const struct in6_addr *addr, in_port_t port,
uint32_t flowinfo, uint32_t scope_id, int flags)
{
struct sockaddr *sa;
if ((sa = sockaddr_alloc(AF_INET6, sizeof(struct sockaddr_in6),
flags)) == NULL)
return NULL;
sockaddr_in6_init1(satosin6(sa), addr, port, flowinfo, scope_id);
return sa;
}
#endif /* _KERNEL */
#if defined(_NETBSD_SOURCE)
#include <machine/ansi.h>
#ifdef _BSD_SIZE_T_
typedef _BSD_SIZE_T_ size_t;
#define _SIZE_T
#undef _BSD_SIZE_T_
#endif
#include <sys/cdefs.h>
__BEGIN_DECLS
struct cmsghdr;
void in6_sin6_2_sin(struct sockaddr_in *, struct sockaddr_in6 *);
void in6_sin_2_v4mapsin6(struct sockaddr_in *, struct sockaddr_in6 *);
void in6_sin6_2_sin_in_sock(struct sockaddr *);
void in6_sin_2_v4mapsin6_in_sock(struct sockaddr **);
extern int inet6_option_space(int);
extern int inet6_option_init(void *, struct cmsghdr **, int);
extern int inet6_option_append(struct cmsghdr *, const uint8_t *,
int, int);
extern uint8_t *inet6_option_alloc(struct cmsghdr *, int, int, int);
extern int inet6_option_next(const struct cmsghdr *, uint8_t **);
extern int inet6_option_find(const struct cmsghdr *, uint8_t **, int);
extern size_t inet6_rthdr_space(int, int);
extern struct cmsghdr *inet6_rthdr_init(void *, int);
extern int inet6_rthdr_add(struct cmsghdr *, const struct in6_addr *,
unsigned int);
extern int inet6_rthdr_lasthop(struct cmsghdr *, unsigned int);
#if 0 /* not implemented yet */
extern int inet6_rthdr_reverse(const struct cmsghdr *, struct cmsghdr *);
#endif
extern int inet6_rthdr_segments(const struct cmsghdr *);
extern struct in6_addr *inet6_rthdr_getaddr(struct cmsghdr *, int);
extern int inet6_rthdr_getflags(const struct cmsghdr *, int);
extern int inet6_opt_init(void *, socklen_t);
extern int inet6_opt_append(void *, socklen_t, int, uint8_t,
socklen_t, uint8_t, void **);
extern int inet6_opt_finish(void *, socklen_t, int);
extern int inet6_opt_set_val(void *, int, void *, socklen_t);
extern int inet6_opt_next(void *, socklen_t, int, uint8_t *,
socklen_t *, void **);
extern int inet6_opt_find(void *, socklen_t, int, uint8_t,
socklen_t *, void **);
extern int inet6_opt_get_val(void *, int, void *, socklen_t);
extern socklen_t inet6_rth_space(int, int);
extern void *inet6_rth_init(void *, socklen_t, int, int);
extern int inet6_rth_add(void *, const struct in6_addr *);
extern int inet6_rth_reverse(const void *, void *);
extern int inet6_rth_segments(const void *);
extern struct in6_addr *inet6_rth_getaddr(const void *, int);
__END_DECLS
#endif /* _NETBSD_SOURCE */
#endif /* !_NETINET6_IN6_H_ */
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