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freebsd-skq/sys/netinet6/in6_var.h
Yoshinobu Inoue cfa1ca9dfa udp IPv6 support, IPv6/IPv4 tunneling support in kernel, 
packet divert at kernel for IPv6/IPv4 translater daemon

This includes queue related patch submitted by jburkhol@home.com.

Submitted by: queue related patch from jburkhol@home.com
Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project
1999-12-07 17:39:16 +00:00

560 lines
21 KiB
C
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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
* $FreeBSD$
*/
#ifndef _NETINET6_IN6_VAR_H_
#define _NETINET6_IN6_VAR_H_
/*
* Interface address, Internet version. One of these structures
* is allocated for each interface with an Internet address.
* The ifaddr structure contains the protocol-independent part
* of the structure and is assumed to be first.
*/
/*
* 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: throuw 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 */
};
struct in6_ifaddr {
struct ifaddr ia_ifa; /* protocol-independent info */
#define ia_ifp ia_ifa.ifa_ifp
#define ia_flags ia_ifa.ifa_flags
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 */
struct in6_ifaddr *ia_next; /* next in6 list of IP6 addresses */
int ia6_flags;
struct in6_addrlifetime ia6_lifetime; /* NULL = infty */
struct ifprefix *ia6_ifpr; /* back pointer to ifprefix */
};
/*
* IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
*/
struct in6_ifstat {
u_int64_t ifs6_in_receive; /* # of total input datagram */
u_int64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */
u_int64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */
u_int64_t ifs6_in_noroute; /* # of datagrams with no route */
u_int64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */
u_int64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */
/* NOTE: increment on final dst if */
u_int64_t ifs6_in_truncated; /* # of truncated datagrams */
u_int64_t ifs6_in_discard; /* # of discarded datagrams */
/* NOTE: fragment timeout is not here */
u_int64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */
/* NOTE: increment on final dst if */
u_int64_t ifs6_out_forward; /* # of datagrams forwarded */
/* NOTE: increment on outgoing if */
u_int64_t ifs6_out_request; /* # of outgoing datagrams from ULP */
/* NOTE: does not include forwrads */
u_int64_t ifs6_out_discard; /* # of discarded datagrams */
u_int64_t ifs6_out_fragok; /* # of datagrams fragmented */
u_int64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */
u_int64_t ifs6_out_fragcreat; /* # of fragment datagrams */
/* NOTE: this is # after fragment */
u_int64_t ifs6_reass_reqd; /* # of incoming fragmented packets */
/* NOTE: increment on final dst if */
u_int64_t ifs6_reass_ok; /* # of reassembled packets */
/* NOTE: this is # after reass */
/* NOTE: increment on final dst if */
u_int64_t ifs6_reass_fail; /* # of reass failures */
/* NOTE: may not be packet count */
/* NOTE: increment on final dst if */
u_int64_t ifs6_in_mcast; /* # of inbound multicast datagrams */
u_int64_t ifs6_out_mcast; /* # of outbound multicast datagrams */
};
/*
* 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_int64_t ifs6_in_msg;
/* ipv6IfIcmpInErrors, # of input error messages */
u_int64_t ifs6_in_error;
/* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
u_int64_t ifs6_in_dstunreach;
/* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
u_int64_t ifs6_in_adminprohib;
/* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
u_int64_t ifs6_in_timeexceed;
/* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
u_int64_t ifs6_in_paramprob;
/* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
u_int64_t ifs6_in_pkttoobig;
/* ipv6IfIcmpInEchos, # of input echo requests */
u_int64_t ifs6_in_echo;
/* ipv6IfIcmpInEchoReplies, # of input echo replies */
u_int64_t ifs6_in_echoreply;
/* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
u_int64_t ifs6_in_routersolicit;
/* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
u_int64_t ifs6_in_routeradvert;
/* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
u_int64_t ifs6_in_neighborsolicit;
/* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
u_int64_t ifs6_in_neighboradvert;
/* ipv6IfIcmpInRedirects, # of input redirects */
u_int64_t ifs6_in_redirect;
/* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
u_int64_t ifs6_in_mldquery;
/* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
u_int64_t ifs6_in_mldreport;
/* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
u_int64_t ifs6_in_mlddone;
/*
* Output statistics. We should solve unresolved routing problem...
*/
/* ipv6IfIcmpOutMsgs, total # of output messages */
u_int64_t ifs6_out_msg;
/* ipv6IfIcmpOutErrors, # of output error messages */
u_int64_t ifs6_out_error;
/* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
u_int64_t ifs6_out_dstunreach;
/* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
u_int64_t ifs6_out_adminprohib;
/* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
u_int64_t ifs6_out_timeexceed;
/* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
u_int64_t ifs6_out_paramprob;
/* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
u_int64_t ifs6_out_pkttoobig;
/* ipv6IfIcmpOutEchos, # of output echo requests */
u_int64_t ifs6_out_echo;
/* ipv6IfIcmpOutEchoReplies, # of output echo replies */
u_int64_t ifs6_out_echoreply;
/* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
u_int64_t ifs6_out_routersolicit;
/* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
u_int64_t ifs6_out_routeradvert;
/* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
u_int64_t ifs6_out_neighborsolicit;
/* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
u_int64_t ifs6_out_neighboradvert;
/* ipv6IfIcmpOutRedirects, # of output redirects */
u_int64_t ifs6_out_redirect;
/* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
u_int64_t ifs6_out_mldquery;
/* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
u_int64_t ifs6_out_mldreport;
/* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
u_int64_t ifs6_out_mlddone;
};
struct in6_ifreq {
char ifr_name[IFNAMSIZ];
union {
struct sockaddr_in6 ifru_addr;
struct sockaddr_in6 ifru_dstaddr;
short ifru_flags;
int ifru_flags6;
int ifru_metric;
caddr_t ifru_data;
struct in6_addrlifetime ifru_lifetime;
struct in6_ifstat ifru_stat;
struct icmp6_ifstat ifru_icmp6stat;
} 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
/*
* Given a pointer to an in6_ifaddr (ifaddr),
* return a pointer to the addr as a sockaddr_in6
*/
#define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr))
#define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr))
#define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
#define IA6_SIN6(ia) (&((ia)->ia_addr))
#define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
#define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
#define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
#define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
#ifdef _KERNEL
#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
(((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
(((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
(((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
(((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
#endif
#define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq)
#define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq)
#define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq)
#define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq)
#define SIOCSIFNETMASK_IN6 _IOW('i', 22, 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', 70, struct in6_aliasreq)
#define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq)
#define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, 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 SIOCGIFINFO_IN6 _IOWR('i', 76, struct in6_ndireq)
#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 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 */
#define SIOCCIFPREFIX_IN6 _IOW('i', 104, \
struct in6_rrenumreq) /* change */
#define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \
struct in6_rrenumreq) /* set global */
#define SIOCGETSGCNT_IN6 _IOWR('u', 106, \
struct sioc_sg_req6) /* get s,g pkt cnt */
#define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \
struct sioc_mif_req6) /* get pkt cnt per if */
#define IN6_IFF_ANYCAST 0x01 /* anycast address */
#define IN6_IFF_TENTATIVE 0x02 /* tentative address */
#define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */
#define IN6_IFF_DETACHED 0x08 /* may be detached from the link */
#define IN6_IFF_DEPRECATED 0x10 /* deprecated address */
/* do not input/output */
#define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
#ifdef _KERNEL
extern struct in6_ifaddr *in6_ifaddr;
extern struct in6_ifstat **in6_ifstat;
extern size_t in6_ifstatmax;
extern struct icmp6stat icmp6stat;
extern struct icmp6_ifstat **icmp6_ifstat;
extern size_t icmp6_ifstatmax;
#define in6_ifstat_inc(ifp, tag) \
do { \
if ((ifp) && (ifp)->if_index <= if_index \
&& (ifp)->if_index < in6_ifstatmax \
&& in6_ifstat && in6_ifstat[(ifp)->if_index]) { \
in6_ifstat[(ifp)->if_index]->tag++; \
} \
} while (0)
extern struct ifqueue ip6intrq; /* IP6 packet input queue */
extern struct in6_addr zeroin6_addr;
extern u_char inet6ctlerrmap[];
extern u_long in6_maxmtu;
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_IPMADDR);
#endif /* MALLOC_DECLARE */
/*
* Macro for finding the internet address structure (in6_ifaddr) corresponding
* to a given interface (ifnet structure).
*/
#define IFP_TO_IA6(ifp, ia) \
/* struct ifnet *ifp; */ \
/* struct in6_ifaddr *ia; */ \
do { \
struct ifaddr *ifa; \
TAILQ_FOREACH(ifa, &(ifp)->if_addrlist, ifa_list) { \
if (!ifa->ifa_addr) \
continue; \
if (ifa->ifa_addr->sa_family == AF_INET6) \
break; \
} \
(ia) = (struct in6_ifaddr *)ifa; \
} while (0)
#endif /* _KERNEL */
/*
* Multi-cast membership entry. One for each group/ifp that a PCB
* belongs to.
*/
struct in6_multi_mship {
struct in6_multi *i6mm_maddr; /* Multicast address pointer */
LIST_ENTRY(in6_multi_mship) i6mm_chain; /* multicast options chain */
};
struct in6_multi {
LIST_ENTRY(in6_multi) in6m_entry; /* list glue */
struct in6_addr in6m_addr; /* IP6 multicast address */
struct ifnet *in6m_ifp; /* back pointer to ifnet */
struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
u_int in6m_refcount; /* # membership claims by sockets */
u_int in6m_state; /* state of the membership */
u_int in6m_timer; /* MLD6 listener report timer */
};
#ifdef _KERNEL
#ifdef SYSCTL_DECL
SYSCTL_DECL(_net_inet6_ip6);
#endif
extern LIST_HEAD(in6_multihead, in6_multi) in6_multihead;
/*
* Structure used by macros below to remember position when stepping through
* all of eht in6_multi records.
*/
struct in6_multistep {
struct in6_ifaddr *i_ia;
struct in6_multi *i_in6m;
};
/*
* Macros for looking up the in6_multi record for a given IP6 multicast
* address on a given interface. If no matching record is found, "in6m"
* returns NLL.
*/
#define IN6_LOOKUP_MULTI(addr, ifp, in6m) \
/* struct in6_addr addr; */ \
/* struct ifnet *ifp; */ \
/* struct in6_multi *in6m; */ \
do { \
register struct ifmultiaddr *ifma; \
for (ifma = (ifp)->if_multiaddrs.lh_first; ifma; \
ifma = ifma->ifma_link.le_next) { \
if (ifma->ifma_addr->sa_family == AF_INET6 \
&& IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6 *)ifma->ifma_addr)->sin6_addr, \
&(addr))) \
break; \
} \
(in6m) = (struct in6_multi *)(ifma ? ifma->ifma_protospec : 0); \
} while(0)
/*
* Macro to step through all of the in6_multi records, one at a time.
* The current position is remembered in "step", which the caller must
* provide. IN6_FIRST_MULTI(), below, must be called to initialize "step"
* and get the first record. Both macros return a NULL "in6m" when there
* are no remaining records.
*/
#define IN6_NEXT_MULTI(step, in6m) \
/* struct in6_multistep step; */ \
/* struct in6_multi *in6m; */ \
do { \
if (((in6m) = (step).i_in6m) != NULL) \
(step).i_in6m = LIST_NEXT((step).i_in6m, in6m_entry); \
} while(0)
#define IN6_FIRST_MULTI(step, in6m) \
/* struct in6_multistep step; */ \
/* struct in6_multi *in6m */ \
do { \
(step).i_in6m = LIST_FIRST(&in6_multihead); \
IN6_NEXT_MULTI((step), (in6m)); \
} while(0)
int in6_ifinit __P((struct ifnet *,
struct in6_ifaddr *, struct sockaddr_in6 *, int));
struct in6_multi *in6_addmulti __P((struct in6_addr *, struct ifnet *,
int *));
void in6_delmulti __P((struct in6_multi *));
void in6_ifscrub __P((struct ifnet *, struct in6_ifaddr *));
extern int in6_ifindex2scopeid __P((int));
extern int in6_mask2len __P((struct in6_addr *));
extern void in6_len2mask __P((struct in6_addr *, int));
int in6_control __P((struct socket *,
u_long, caddr_t, struct ifnet *, struct proc *));
void in6_savemkludge __P((struct in6_ifaddr *));
void in6_setmaxmtu __P((void));
void in6_restoremkludge __P((struct in6_ifaddr *, struct ifnet *));
struct in6_ifaddr *in6ifa_ifpforlinklocal __P((struct ifnet *));
struct in6_ifaddr *in6ifa_ifpwithaddr __P((struct ifnet *,
struct in6_addr *));
char *ip6_sprintf __P((struct in6_addr *));
int in6_matchlen __P((struct in6_addr *, struct in6_addr *));
int in6_are_prefix_equal __P((struct in6_addr *p1, struct in6_addr *p2,
int len));
void in6_prefixlen2mask __P((struct in6_addr *maskp, int len));
int in6_prefix_ioctl __P((struct socket *so, u_long cmd, caddr_t data,
struct ifnet *ifp));
int in6_prefix_add_ifid __P((int iilen, struct in6_ifaddr *ia));
void in6_prefix_remove_ifid __P((int iilen, struct in6_ifaddr *ia));
#endif /* _KERNEL */
#endif /* _NETINET6_IN6_VAR_H_ */
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