in6_var.h

/*
 * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
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 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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 * as defined in and that are subject to the Apple Public Source License
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/*
 * 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) 1985, 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_var.h	8.1 (Berkeley) 6/10/93
 */

#ifndef _NETINET6_IN6_VAR_H_
#define _NETINET6_IN6_VAR_H_
#include <sys/appleapiopts.h>
#include <net/net_kev.h>

#include <netinet6/scope6_var.h>
#include <sys/kern_event.h>
#include <net/ethernet.h>

/*
 * pltime/vltime are just for future reference (required to implements 2
 * hour rule for hosts).  they should never be modified by nd6_timeout or
 * anywhere else.
 *	userland -> kernel: accept pltime/vltime
 *	kernel -> userland: throw up everything
 *	in kernel: modify preferred/expire only
 */
struct in6_addrlifetime {
	time_t ia6t_expire;     /* valid lifetime expiration time */
	time_t ia6t_preferred;  /* preferred lifetime expiration time */
	u_int32_t ia6t_vltime;  /* valid lifetime */
	u_int32_t ia6t_pltime;  /* prefix lifetime */
};


/* control structure to manage address selection policy */
struct in6_addrpolicy {
	struct sockaddr_in6 addr; /* prefix address */
	struct sockaddr_in6 addrmask; /* prefix mask */
	int preced;             /* precedence */
	int label;              /* matching label */
	u_quad_t use;           /* statistics */
};

/*
 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
 */
struct in6_ifstat {
	u_quad_t ifs6_in_receive;       /* # of total input datagram */
	u_quad_t ifs6_in_hdrerr;        /* # of datagrams with invalid hdr */
	u_quad_t ifs6_in_toobig;        /* # of datagrams exceeded MTU */
	u_quad_t ifs6_in_noroute;       /* # of datagrams with no route */
	u_quad_t ifs6_in_addrerr;       /* # of datagrams with invalid dst */
	u_quad_t ifs6_in_protounknown;  /* # of datagrams with unknown proto */
	                                /* NOTE: increment on final dst if */
	u_quad_t ifs6_in_truncated;     /* # of truncated datagrams */
	u_quad_t ifs6_in_discard;       /* # of discarded datagrams */
	                                /* NOTE: fragment timeout is not here */
	u_quad_t ifs6_in_deliver;       /* # of datagrams delivered to ULP */
	                                /* NOTE: increment on final dst if */
	u_quad_t ifs6_out_forward;      /* # of datagrams forwarded */
	                                /* NOTE: increment on outgoing if */
	u_quad_t ifs6_out_request;      /* # of outgoing datagrams from ULP */
	                                /* NOTE: does not include forwrads */
	u_quad_t ifs6_out_discard;      /* # of discarded datagrams */
	u_quad_t ifs6_out_fragok;       /* # of datagrams fragmented */
	u_quad_t ifs6_out_fragfail;     /* # of datagrams failed on fragment */
	u_quad_t ifs6_out_fragcreat;    /* # of fragment datagrams */
	                                /* NOTE: this is # after fragment */
	u_quad_t ifs6_reass_reqd;       /* # of incoming fragmented packets */
	                                /* NOTE: increment on final dst if */
	u_quad_t ifs6_reass_ok;         /* # of reassembled packets */
	                                /* NOTE: this is # after reass */
	                                /* NOTE: increment on final dst if */
	u_quad_t ifs6_atmfrag_rcvd;     /* # of atomic fragments received */
	u_quad_t ifs6_reass_fail;       /* # of reass failures */
	                                /* NOTE: may not be packet count */
	                                /* NOTE: increment on final dst if */
	u_quad_t ifs6_in_mcast;         /* # of inbound multicast datagrams */
	u_quad_t ifs6_out_mcast;        /* # of outbound multicast datagrams */

	u_quad_t ifs6_cantfoward_icmp6; /* # of ICMPv6 packets received for unreachable dest */
	u_quad_t ifs6_addr_expiry_cnt;  /* # of address expiry events (excluding privacy addresses) */
	u_quad_t ifs6_pfx_expiry_cnt;   /* # of prefix expiry events */
	u_quad_t ifs6_defrtr_expiry_cnt;        /* # of default router expiry events */
};

/*
 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
 * XXX: I'm not sure if this file is the right place for this structure...
 */
struct icmp6_ifstat {
	/*
	 * Input statistics
	 */
	/* ipv6IfIcmpInMsgs, total # of input messages */
	u_quad_t ifs6_in_msg;
	/* ipv6IfIcmpInErrors, # of input error messages */
	u_quad_t ifs6_in_error;
	/* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
	u_quad_t ifs6_in_dstunreach;
	/* ipv6IfIcmpInAdminProhibs, # of input admin. prohibited errs */
	u_quad_t ifs6_in_adminprohib;
	/* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
	u_quad_t ifs6_in_timeexceed;
	/* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
	u_quad_t ifs6_in_paramprob;
	/* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
	u_quad_t ifs6_in_pkttoobig;
	/* ipv6IfIcmpInEchos, # of input echo requests */
	u_quad_t ifs6_in_echo;
	/* ipv6IfIcmpInEchoReplies, # of input echo replies */
	u_quad_t ifs6_in_echoreply;
	/* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
	u_quad_t ifs6_in_routersolicit;
	/* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
	u_quad_t ifs6_in_routeradvert;
	/* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
	u_quad_t ifs6_in_neighborsolicit;
	/* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advs. */
	u_quad_t ifs6_in_neighboradvert;
	/* ipv6IfIcmpInRedirects, # of input redirects */
	u_quad_t ifs6_in_redirect;
	/* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
	u_quad_t ifs6_in_mldquery;
	/* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
	u_quad_t ifs6_in_mldreport;
	/* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
	u_quad_t ifs6_in_mlddone;

	/*
	 * Output statistics. We should solve unresolved routing problem...
	 */
	/* ipv6IfIcmpOutMsgs, total # of output messages */
	u_quad_t ifs6_out_msg;
	/* ipv6IfIcmpOutErrors, # of output error messages */
	u_quad_t ifs6_out_error;
	/* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
	u_quad_t ifs6_out_dstunreach;
	/* ipv6IfIcmpOutAdminProhibs, # of output admin. prohibited errs */
	u_quad_t ifs6_out_adminprohib;
	/* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
	u_quad_t ifs6_out_timeexceed;
	/* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
	u_quad_t ifs6_out_paramprob;
	/* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
	u_quad_t ifs6_out_pkttoobig;
	/* ipv6IfIcmpOutEchos, # of output echo requests */
	u_quad_t ifs6_out_echo;
	/* ipv6IfIcmpOutEchoReplies, # of output echo replies */
	u_quad_t ifs6_out_echoreply;
	/* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
	u_quad_t ifs6_out_routersolicit;
	/* ipv6IfIcmpOutRouterAdvertisements, # of output router advs. */
	u_quad_t ifs6_out_routeradvert;
	/* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
	u_quad_t ifs6_out_neighborsolicit;
	/* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advs. */
	u_quad_t ifs6_out_neighboradvert;
	/* ipv6IfIcmpOutRedirects, # of output redirects */
	u_quad_t ifs6_out_redirect;
	/* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
	u_quad_t ifs6_out_mldquery;
	/* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
	u_quad_t ifs6_out_mldreport;
	/* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
	u_quad_t ifs6_out_mlddone;
};

struct in6_ifreq {
	char    ifr_name[IFNAMSIZ];
	union {
		struct  sockaddr_in6 ifru_addr;
		struct  sockaddr_in6 ifru_dstaddr;
		int     ifru_flags;
		int     ifru_flags6;
		int     ifru_metric;
		int     ifru_intval;
		caddr_t ifru_data;
		struct in6_addrlifetime ifru_lifetime;
		struct in6_ifstat ifru_stat;
		struct icmp6_ifstat ifru_icmp6stat;
		u_int32_t ifru_scope_id[SCOPE6_ID_MAX];
	} ifr_ifru;
};

struct in6_aliasreq {
	char    ifra_name[IFNAMSIZ];
	struct  sockaddr_in6 ifra_addr;
	struct  sockaddr_in6 ifra_dstaddr;
	struct  sockaddr_in6 ifra_prefixmask;
	int     ifra_flags;
	struct in6_addrlifetime ifra_lifetime;
};



/* prefix type macro */
#define IN6_PREFIX_ND   1
#define IN6_PREFIX_RR   2

/*
 * prefix related flags passed between kernel(NDP related part) and
 * user land command(ifconfig) and daemon(rtadvd).
 */
struct in6_prflags {
	struct prf_ra {
		u_char onlink : 1;
		u_char autonomous : 1;
		u_char reserved : 6;
	} prf_ra;
	u_char prf_reserved1;
	u_short prf_reserved2;
	/* want to put this on 4byte offset */
	struct prf_rr {
		u_char decrvalid : 1;
		u_char decrprefd : 1;
		u_char reserved : 6;
	} prf_rr;
	u_char prf_reserved3;
	u_short prf_reserved4;
};

struct  in6_prefixreq {
	char    ipr_name[IFNAMSIZ];
	u_char  ipr_origin;
	u_char  ipr_plen;
	u_int32_t ipr_vltime;
	u_int32_t ipr_pltime;
	struct in6_prflags ipr_flags;
	struct  sockaddr_in6 ipr_prefix;
};

#define PR_ORIG_RA      0
#define PR_ORIG_RR      1
#define PR_ORIG_STATIC  2
#define PR_ORIG_KERNEL  3

#define ipr_raf_onlink          ipr_flags.prf_ra.onlink
#define ipr_raf_auto            ipr_flags.prf_ra.autonomous

#define ipr_statef_onlink       ipr_flags.prf_state.onlink

#define ipr_rrf_decrvalid       ipr_flags.prf_rr.decrvalid
#define ipr_rrf_decrprefd       ipr_flags.prf_rr.decrprefd

struct in6_rrenumreq {
	char    irr_name[IFNAMSIZ];
	u_char  irr_origin;
	u_char  irr_m_len;      /* match len for matchprefix */
	u_char  irr_m_minlen;   /* minlen for matching prefix */
	u_char  irr_m_maxlen;   /* maxlen for matching prefix */
	u_char  irr_u_uselen;   /* uselen for adding prefix */
	u_char  irr_u_keeplen;  /* keeplen from matching prefix */
	struct irr_raflagmask {
		u_char onlink : 1;
		u_char autonomous : 1;
		u_char reserved : 6;
	} irr_raflagmask;
	u_int32_t irr_vltime;
	u_int32_t irr_pltime;
	struct in6_prflags irr_flags;
	struct  sockaddr_in6 irr_matchprefix;
	struct  sockaddr_in6 irr_useprefix;
};

#define irr_raf_mask_onlink     irr_raflagmask.onlink
#define irr_raf_mask_auto       irr_raflagmask.autonomous
#define irr_raf_mask_reserved   irr_raflagmask.reserved

#define irr_raf_onlink          irr_flags.prf_ra.onlink
#define irr_raf_auto            irr_flags.prf_ra.autonomous

#define irr_statef_onlink       irr_flags.prf_state.onlink

#define irr_rrf                 irr_flags.prf_rr
#define irr_rrf_decrvalid       irr_flags.prf_rr.decrvalid
#define irr_rrf_decrprefd       irr_flags.prf_rr.decrprefd

/*
 * Event data, inet6 style.
 */
struct kev_in6_addrlifetime {
	u_int32_t ia6t_expire;
	u_int32_t ia6t_preferred;
	u_int32_t ia6t_vltime;
	u_int32_t ia6t_pltime;
};

struct kev_in6_data {
	struct net_event_data link_data;
	struct sockaddr_in6 ia_addr;    /* interface address */
	struct sockaddr_in6 ia_net;     /* network number of interface */
	struct sockaddr_in6 ia_dstaddr; /* space for destination addr */
	struct sockaddr_in6 ia_prefixmask; /* prefix mask */
	u_int32_t ia_plen;              /* prefix length */
	u_int32_t ia6_flags;            /* address flags from in6_ifaddr */
	struct kev_in6_addrlifetime ia_lifetime; /* address life info */
	uint8_t ia_mac[ETHER_ADDR_LEN];
};


#define SIOCSIFADDR_IN6          _IOW('i', 12, struct in6_ifreq)
#define SIOCGIFADDR_IN6         _IOWR('i', 33, struct in6_ifreq)

/*
 * SIOCSxxx ioctls should be unused (see comments in in6.c), but
 * we do not shift numbers for binary compatibility.
 */
#define SIOCSIFDSTADDR_IN6      _IOW('i', 14, struct in6_ifreq)
#define SIOCSIFNETMASK_IN6      _IOW('i', 22, struct in6_ifreq)

#define SIOCGIFDSTADDR_IN6      _IOWR('i', 34, struct in6_ifreq)
#define SIOCGIFNETMASK_IN6      _IOWR('i', 37, struct in6_ifreq)

#define SIOCDIFADDR_IN6         _IOW('i', 25, struct in6_ifreq)
#define SIOCAIFADDR_IN6         _IOW('i', 26, struct in6_aliasreq)

#define SIOCSIFPHYADDR_IN6      _IOW('i', 62, struct in6_aliasreq)
#define SIOCGIFPSRCADDR_IN6     _IOWR('i', 63, struct in6_ifreq)
#define SIOCGIFPDSTADDR_IN6     _IOWR('i', 64, struct in6_ifreq)
#define SIOCGIFAFLAG_IN6        _IOWR('i', 73, struct in6_ifreq)

#define SIOCGDRLST_IN6          _IOWR('i', 74, struct in6_drlist)

#define SIOCGPRLST_IN6          _IOWR('i', 75, struct in6_prlist)

#define OSIOCGIFINFO_IN6        _IOWR('i', 108, struct in6_ondireq)
#define SIOCGIFINFO_IN6         _IOWR('i', 76, struct in6_ondireq)
#define SIOCSNDFLUSH_IN6        _IOWR('i', 77, struct in6_ifreq)

#define SIOCGNBRINFO_IN6        _IOWR('i', 78, struct in6_nbrinfo)

#define SIOCSPFXFLUSH_IN6       _IOWR('i', 79, struct in6_ifreq)
#define SIOCSRTRFLUSH_IN6       _IOWR('i', 80, struct in6_ifreq)

#define SIOCGIFALIFETIME_IN6    _IOWR('i', 81, struct in6_ifreq)
#define SIOCSIFALIFETIME_IN6    _IOWR('i', 82, struct in6_ifreq)
#define SIOCGIFSTAT_IN6         _IOWR('i', 83, struct in6_ifreq)
#define SIOCGIFSTAT_ICMP6       _IOWR('i', 84, struct in6_ifreq)

#define SIOCSDEFIFACE_IN6       _IOWR('i', 85, struct in6_ndifreq)
#define SIOCGDEFIFACE_IN6       _IOWR('i', 86, struct in6_ndifreq)

#define SIOCSIFINFO_FLAGS       _IOWR('i', 87, struct in6_ndireq) /* XXX */

/* N.B.: These 3 ioctls are deprecated and won't work */
#define SIOCSSCOPE6             _IOW('i', 88, struct in6_ifreq)
#define SIOCGSCOPE6             _IOWR('i', 89, struct in6_ifreq)
#define SIOCGSCOPE6DEF          _IOWR('i', 90, struct in6_ifreq)

#define SIOCSIFPREFIX_IN6       _IOW('i', 100, struct in6_prefixreq) /* set */
#define SIOCGIFPREFIX_IN6       _IOWR('i', 101, struct in6_prefixreq) /* get */
#define SIOCDIFPREFIX_IN6       _IOW('i', 102, struct in6_prefixreq) /* del */
#define SIOCAIFPREFIX_IN6       _IOW('i', 103, struct in6_rrenumreq) /* add */

/* change */
#define SIOCCIFPREFIX_IN6       _IOW('i', 104, struct in6_rrenumreq)

/* set global */
#define SIOCSGIFPREFIX_IN6      _IOW('i', 105, struct in6_rrenumreq)

/*
 * multicast routing, get s/g pkt cnt, pkt cnt per interface.
 */
#define SIOCGETSGCNT_IN6        _IOWR('u', 28, struct sioc_sg_req6)
#define SIOCGETMIFCNT_IN6       _IOWR('u', 107, struct sioc_mif_req6)

#define SIOCAADDRCTL_POLICY     _IOW('u', 108, struct in6_addrpolicy)
#define SIOCDADDRCTL_POLICY     _IOW('u', 109, struct in6_addrpolicy)


#define IN6_IFF_ANYCAST         0x0001  /* anycast address */
#define IN6_IFF_TENTATIVE       0x0002  /* tentative address */
#define IN6_IFF_DUPLICATED      0x0004  /* DAD detected duplicate */
#define IN6_IFF_DETACHED        0x0008  /* may be detached from the link */
#define IN6_IFF_DEPRECATED      0x0010  /* deprecated address */

/* don't perform DAD on this address (used only at first SIOC* call) */
#define IN6_IFF_NODAD           0x0020

#define IN6_IFF_AUTOCONF        0x0040  /* autoconfigurable address. */
#define IN6_IFF_TEMPORARY       0x0080  /* temporary (anonymous) address. */
#define IN6_IFF_DYNAMIC         0x0100  /* assigned by DHCPv6 service */
#define IN6_IFF_OPTIMISTIC      0x0200  /* optimistic DAD, i.e. RFC 4429 */
#define IN6_IFF_SECURED         0x0400  /* cryptographically generated */
#define IN6_IFF_CLAT46          0x1000  /* Address reserved for CLAT46 */
#define IN6_IFF_NOPFX           0x8000  /* Depreciated. Don't use. */

/* Duplicate Address Detection [DAD] in progress. */
#define IN6_IFF_DADPROGRESS     (IN6_IFF_TENTATIVE|IN6_IFF_OPTIMISTIC)

/* do not input/output */
#define IN6_IFF_NOTREADY        (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)

/* SLAAC/DHCPv6 address */
#define IN6_IFF_NOTMANUAL       (IN6_IFF_AUTOCONF|IN6_IFF_DYNAMIC)


#endif /* _NETINET6_IN6_VAR_H_ */