[apple/xnu.git] / bsd / netinet / in_var.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * 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	8.2 (Berkeley) 1/9/95
 * $FreeBSD: src/sys/netinet/in_var.h,v 1.33.2.2 2001/07/17 10:50:01 ru Exp $
 */

#ifndef _NETINET_IN_VAR_H_
#define _NETINET_IN_VAR_H_
#include <sys/appleapiopts.h>

#include <sys/queue.h>
#ifdef __APPLE__
#include <sys/kern_event.h>
#endif

#ifdef __APPLE_API_UNSTABLE

/*
 * Interface address, Internet version.  One of these structures
 * is allocated for each Internet address on an interface.
 * The ifaddr structure contains the protocol-independent part
 * of the structure and is assumed to be first.
 */
struct in_ifaddr {
	struct	ifaddr ia_ifa;		/* protocol-independent info */
#define	ia_ifp		ia_ifa.ifa_ifp
#define ia_flags	ia_ifa.ifa_flags
					/* ia_{,sub}net{,mask} in host order */
	u_long	ia_net;			/* network number of interface */
	u_long	ia_netmask;		/* mask of net part */
	u_long	ia_subnet;		/* subnet number, including net */
	u_long	ia_subnetmask;		/* mask of subnet part */
	struct	in_addr ia_netbroadcast; /* to recognize net broadcasts */
	TAILQ_ENTRY(in_ifaddr) ia_link;	/* tailq macro glue */
	struct	sockaddr_in ia_addr;	/* reserve space for interface name */
	struct	sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
#define	ia_broadaddr	ia_dstaddr
	struct	sockaddr_in ia_sockmask; /* reserve space for general netmask */
};

struct	in_aliasreq {
	char	ifra_name[IFNAMSIZ];		/* if name, e.g. "en0" */
	struct	sockaddr_in ifra_addr;
	struct	sockaddr_in ifra_broadaddr;
#define ifra_dstaddr ifra_broadaddr
	struct	sockaddr_in ifra_mask;
#ifdef __APPLE__
        u_long              dlt;
#endif
};

#ifdef __APPLE__
/*
 * Event data, internet style.
 */
struct kev_in_data {
        struct net_event_data   link_data;
	struct in_addr  ia_addr;
	u_long	ia_net;			/* network number of interface */
	u_long	ia_netmask;		/* mask of net part */
	u_long	ia_subnet;		/* subnet number, including net */
	u_long	ia_subnetmask;		/* mask of subnet part */
	struct	in_addr ia_netbroadcast; /* to recognize net broadcasts */
	struct  in_addr ia_dstaddr;
};

struct kev_in_collision {
	struct	net_event_data	link_data;	/* link colliding arp was received on */
	struct	in_addr	ia_ipaddr;	/* IP address we and another node are using */
	u_char	hw_len;	/* length of hardware address */
	u_char	hw_addr[0];	/* variable length hardware address */
};


/*
 * Define inet event subclass and specific inet events.
 */

#define KEV_INET_SUBCLASS 1

#define KEV_INET_NEW_ADDR     1
#define KEV_INET_CHANGED_ADDR 2
#define KEV_INET_ADDR_DELETED 3
#define KEV_INET_SIFDSTADDR   4
#define KEV_INET_SIFBRDADDR   5
#define KEV_INET_SIFNETMASK   6
#define KEV_INET_ARPCOLLISION 7	/* use kev_in_collision */
#endif /* __APPLE__ */

/*
 * Given a pointer to an in_ifaddr (ifaddr),
 * return a pointer to the addr as a sockaddr_in.
 */
#define IA_SIN(ia)    (&(((struct in_ifaddr *)(ia))->ia_addr))
#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))

#define IN_LNAOF(in, ifa) \
	((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))

#endif /* __APPLE_API_UNSTABLE */

#ifdef	KERNEL
#ifdef __APPLE_API_PRIVATE
extern	TAILQ_HEAD(in_ifaddrhead, in_ifaddr) in_ifaddrhead;
extern	struct	ifqueue	ipintrq;		/* ip packet input queue */
extern	struct	in_addr zeroin_addr;
extern	u_char	inetctlerrmap[];

/*
 * Macro for finding the interface (ifnet structure) corresponding to one
 * of our IP addresses.
 */
#define INADDR_TO_IFP(addr, ifp) \
	/* struct in_addr addr; */ \
	/* struct ifnet *ifp; */ \
{ \
	struct in_ifaddr *ia; \
\
	TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) \
		if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
			break; \
	(ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
}

/*
 * Macro for finding the internet address structure (in_ifaddr) corresponding
 * to a given interface (ifnet structure).
 */
#define IFP_TO_IA(ifp, ia) \
	/* struct ifnet *ifp; */ \
	/* struct in_ifaddr *ia; */ \
{ \
	for ((ia) = TAILQ_FIRST(&in_ifaddrhead); \
	    (ia) != NULL && (ia)->ia_ifp != (ifp); \
	    (ia) = TAILQ_NEXT((ia), ia_link)) \
		continue; \
}
#endif /* __APPLE_API_PRIVATE */
#endif

#ifdef __APPLE_API_UNSTABLE
/*
 * This information should be part of the ifnet structure but we don't wish
 * to change that - as it might break a number of things
 */

struct router_info {
	struct ifnet *rti_ifp;
	int    rti_type; /* type of router which is querier on this interface */
	int    rti_time; /* # of slow timeouts since last old query */
	struct router_info *rti_next;
};

/*
 * Internet multicast address structure.  There is one of these for each IP
 * multicast group to which this host belongs on a given network interface.
 * For every entry on the interface's if_multiaddrs list which represents
 * an IP multicast group, there is one of these structures.  They are also
 * kept on a system-wide list to make it easier to keep our legacy IGMP code
 * compatible with the rest of the world (see IN_FIRST_MULTI et al, below).
 */
struct in_multi {
	LIST_ENTRY(in_multi) inm_link;	/* queue macro glue */
	struct	in_addr inm_addr;	/* IP multicast address, convenience */
	struct	ifnet *inm_ifp;		/* back pointer to ifnet */
	struct	ifmultiaddr *inm_ifma;	/* back pointer to ifmultiaddr */
	u_int	inm_timer;		/* IGMP membership report timer */
	u_int	inm_state;		/*  state of the membership */
	struct	router_info *inm_rti;	/* router info*/
};
#endif /* __APPLE_API_UNSTABLE */

#ifdef KERNEL
#ifdef __APPLE_API_PRIVATE

#ifdef SYSCTL_DECL
SYSCTL_DECL(_net_inet_ip);
SYSCTL_DECL(_net_inet_raw);
#endif

extern LIST_HEAD(in_multihead, in_multi) in_multihead;

/*
 * Structure used by macros below to remember position when stepping through
 * all of the in_multi records.
 */
struct in_multistep {
	struct in_multi *i_inm;
};

/*
 * Macro for looking up the in_multi record for a given IP multicast address
 * on a given interface.  If no matching record is found, "inm" is set null.
 */
#define IN_LOOKUP_MULTI(addr, ifp, inm) \
	/* struct in_addr addr; */ \
	/* struct ifnet *ifp; */ \
	/* struct in_multi *inm; */ \
do { \
	struct ifmultiaddr *ifma; \
\
	LIST_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { \
		if (ifma->ifma_addr->sa_family == AF_INET \
		    && ((struct sockaddr_in *)ifma->ifma_addr)->sin_addr.s_addr == \
		    (addr).s_addr) \
			break; \
	} \
	(inm) = ifma ? ifma->ifma_protospec : 0; \
} while(0)

/*
 * Macro to step through all of the in_multi records, one at a time.
 * The current position is remembered in "step", which the caller must
 * provide.  IN_FIRST_MULTI(), below, must be called to initialize "step"
 * and get the first record.  Both macros return a NULL "inm" when there
 * are no remaining records.
 */
#define IN_NEXT_MULTI(step, inm) \
	/* struct in_multistep  step; */ \
	/* struct in_multi *inm; */ \
do { \
	if (((inm) = (step).i_inm) != NULL) \
		(step).i_inm = LIST_NEXT((step).i_inm, inm_link); \
} while(0)

#define IN_FIRST_MULTI(step, inm) \
	/* struct in_multistep step; */ \
	/* struct in_multi *inm; */ \
do { \
	(step).i_inm = LIST_FIRST(&in_multihead); \
	IN_NEXT_MULTI((step), (inm)); \
} while(0)

struct	route;
struct	in_multi *in_addmulti __P((struct in_addr *, struct ifnet *));
void	in_delmulti __P((struct in_multi *));
int	in_control __P((struct socket *, u_long, caddr_t, struct ifnet *,
			struct proc *));
void	in_rtqdrain __P((void));
void	ip_input __P((struct mbuf *));
int	in_ifadown __P((struct ifaddr *ifa, int));
void	in_ifscrub __P((struct ifnet *, struct in_ifaddr *));
int	ipflow_fastforward __P((struct mbuf *));
void	ipflow_create __P((const struct route *, struct mbuf *));
void	ipflow_slowtimo __P((void));

#endif /* __APPLE_API_PRIVATE */
#endif /* _KERNEL */

/* INET6 stuff */
#include <netinet6/in6_var.h>

#endif /* _NETINET_IN_VAR_H_ */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
43866e37	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
43866e37 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
43866e37 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1985, 1986, 1993
	27	* The Regents of the University of California. All rights reserved.
	28	*
	29	* Redistribution and use in source and binary forms, with or without
	30	* modification, are permitted provided that the following conditions
	31	* are met:
	32	* 1. Redistributions of source code must retain the above copyright
	33	* notice, this list of conditions and the following disclaimer.
	34	* 2. Redistributions in binary form must reproduce the above copyright
	35	* notice, this list of conditions and the following disclaimer in the
	36	* documentation and/or other materials provided with the distribution.
	37	* 3. All advertising materials mentioning features or use of this software
	38	* must display the following acknowledgement:
	39	* This product includes software developed by the University of
	40	* California, Berkeley and its contributors.
	41	* 4. Neither the name of the University nor the names of its contributors
	42	* may be used to endorse or promote products derived from this software
	43	* without specific prior written permission.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	46	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	47	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	48	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	49	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	50	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	51	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	53	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	54	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	55	* SUCH DAMAGE.
	56	*
	57	* @(#)in_var.h 8.2 (Berkeley) 1/9/95
9bccf70c	58	* $FreeBSD: src/sys/netinet/in_var.h,v 1.33.2.2 2001/07/17 10:50:01 ru Exp $
1c79356b A	59	*/
	60
	61	#ifndef _NETINET_IN_VAR_H_
	62	#define _NETINET_IN_VAR_H_
9bccf70c	63	#include <sys/appleapiopts.h>
1c79356b A	64
1c79356b A	65	#include <sys/queue.h>
9bccf70c	66	#ifdef __APPLE__
1c79356b	67	#include <sys/kern_event.h>
9bccf70c A	68	#endif
	69
	70	#ifdef __APPLE_API_UNSTABLE
1c79356b A	71
	72	/*
	73	* Interface address, Internet version. One of these structures
	74	* is allocated for each Internet address on an interface.
	75	* The ifaddr structure contains the protocol-independent part
	76	* of the structure and is assumed to be first.
	77	*/
	78	struct in_ifaddr {
	79	struct ifaddr ia_ifa; /* protocol-independent info */
	80	#define ia_ifp ia_ifa.ifa_ifp
	81	#define ia_flags ia_ifa.ifa_flags
	82	/* ia_{,sub}net{,mask} in host order */
	83	u_long ia_net; /* network number of interface */
	84	u_long ia_netmask; /* mask of net part */
	85	u_long ia_subnet; /* subnet number, including net */
	86	u_long ia_subnetmask; /* mask of subnet part */
	87	struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
	88	TAILQ_ENTRY(in_ifaddr) ia_link; /* tailq macro glue */
	89	struct sockaddr_in ia_addr; /* reserve space for interface name */
	90	struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */
	91	#define ia_broadaddr ia_dstaddr
	92	struct sockaddr_in ia_sockmask; /* reserve space for general netmask */
	93	};
	94
	95	struct in_aliasreq {
	96	char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
	97	struct sockaddr_in ifra_addr;
	98	struct sockaddr_in ifra_broadaddr;
	99	#define ifra_dstaddr ifra_broadaddr
	100	struct sockaddr_in ifra_mask;
9bccf70c	101	#ifdef __APPLE__
1c79356b	102	u_long dlt;
9bccf70c	103	#endif
1c79356b A	104	};
1c79356b A	105
9bccf70c	106	#ifdef __APPLE__
1c79356b A	107	/*
	108	* Event data, internet style.
	109	*/
1c79356b A	110	struct kev_in_data {
	111	struct net_event_data link_data;
	112	struct in_addr ia_addr;
	113	u_long ia_net; /* network number of interface */
	114	u_long ia_netmask; /* mask of net part */
	115	u_long ia_subnet; /* subnet number, including net */
	116	u_long ia_subnetmask; /* mask of subnet part */
	117	struct in_addr ia_netbroadcast; /* to recognize net broadcasts */
	118	struct in_addr ia_dstaddr;
	119	};
	120
90556fb8 A	121	struct kev_in_collision {
	122	struct net_event_data link_data; /* link colliding arp was received on */
	123	struct in_addr ia_ipaddr; /* IP address we and another node are using */
	124	u_char hw_len; /* length of hardware address */
	125	u_char hw_addr[0]; /* variable length hardware address */
	126	};
	127
1c79356b	128
1c79356b A	129	/*
	130	* Define inet event subclass and specific inet events.
	131	*/
	132
	133	#define KEV_INET_SUBCLASS 1
	134
	135	#define KEV_INET_NEW_ADDR 1
	136	#define KEV_INET_CHANGED_ADDR 2
	137	#define KEV_INET_ADDR_DELETED 3
	138	#define KEV_INET_SIFDSTADDR 4
	139	#define KEV_INET_SIFBRDADDR 5
	140	#define KEV_INET_SIFNETMASK 6
90556fb8	141	#define KEV_INET_ARPCOLLISION 7 /* use kev_in_collision */
9bccf70c	142	#endif /* __APPLE__ */
1c79356b A	143
	144	/*
	145	* Given a pointer to an in_ifaddr (ifaddr),
	146	* return a pointer to the addr as a sockaddr_in.
	147	*/
	148	#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr))
	149	#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr))
	150
	151	#define IN_LNAOF(in, ifa) \
	152	((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask))
	153
9bccf70c	154	#endif /* __APPLE_API_UNSTABLE */
1c79356b A	155
1c79356b A	156	#ifdef KERNEL
9bccf70c	157	#ifdef __APPLE_API_PRIVATE
1c79356b A	158	extern TAILQ_HEAD(in_ifaddrhead, in_ifaddr) in_ifaddrhead;
	159	extern struct ifqueue ipintrq; /* ip packet input queue */
	160	extern struct in_addr zeroin_addr;
	161	extern u_char inetctlerrmap[];
	162
	163	/*
	164	* Macro for finding the interface (ifnet structure) corresponding to one
	165	* of our IP addresses.
	166	*/
	167	#define INADDR_TO_IFP(addr, ifp) \
	168	/* struct in_addr addr; */ \
	169	/* struct ifnet ifp; / \
	170	{ \
9bccf70c	171	struct in_ifaddr *ia; \
1c79356b	172	\
9bccf70c A	173	TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) \
	174	if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \
	175	break; \
1c79356b A	176	(ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \
	177	}
	178
	179	/*
	180	* Macro for finding the internet address structure (in_ifaddr) corresponding
	181	* to a given interface (ifnet structure).
	182	*/
	183	#define IFP_TO_IA(ifp, ia) \
	184	/* struct ifnet ifp; / \
	185	/* struct in_ifaddr ia; / \
	186	{ \
9bccf70c	187	for ((ia) = TAILQ_FIRST(&in_ifaddrhead); \
1c79356b	188	(ia) != NULL && (ia)->ia_ifp != (ifp); \
9bccf70c	189	(ia) = TAILQ_NEXT((ia), ia_link)) \
1c79356b A	190	continue; \
1c79356b A	191	}
9bccf70c	192	#endif /* __APPLE_API_PRIVATE */
1c79356b A	193	#endif
1c79356b A	194
9bccf70c	195	#ifdef __APPLE_API_UNSTABLE
1c79356b A	196	/*
	197	* This information should be part of the ifnet structure but we don't wish
	198	* to change that - as it might break a number of things
	199	*/
	200
	201	struct router_info {
	202	struct ifnet *rti_ifp;
	203	int rti_type; /* type of router which is querier on this interface */
	204	int rti_time; /* # of slow timeouts since last old query */
	205	struct router_info *rti_next;
	206	};
	207
	208	/*
	209	* Internet multicast address structure. There is one of these for each IP
	210	* multicast group to which this host belongs on a given network interface.
	211	* For every entry on the interface's if_multiaddrs list which represents
	212	* an IP multicast group, there is one of these structures. They are also
	213	* kept on a system-wide list to make it easier to keep our legacy IGMP code
	214	* compatible with the rest of the world (see IN_FIRST_MULTI et al, below).
	215	*/
	216	struct in_multi {
	217	LIST_ENTRY(in_multi) inm_link; /* queue macro glue */
	218	struct in_addr inm_addr; /* IP multicast address, convenience */
	219	struct ifnet inm_ifp; / back pointer to ifnet */
	220	struct ifmultiaddr inm_ifma; / back pointer to ifmultiaddr */
	221	u_int inm_timer; /* IGMP membership report timer */
	222	u_int inm_state; /* state of the membership */
	223	struct router_info inm_rti; / router info*/
	224	};
9bccf70c	225	#endif /* __APPLE_API_UNSTABLE */
1c79356b A	226
1c79356b A	227	#ifdef KERNEL
9bccf70c	228	#ifdef __APPLE_API_PRIVATE
1c79356b A	229
	230	#ifdef SYSCTL_DECL
	231	SYSCTL_DECL(_net_inet_ip);
	232	SYSCTL_DECL(_net_inet_raw);
	233	#endif
	234
	235	extern LIST_HEAD(in_multihead, in_multi) in_multihead;
	236
	237	/*
	238	* Structure used by macros below to remember position when stepping through
	239	* all of the in_multi records.
	240	*/
	241	struct in_multistep {
	242	struct in_multi *i_inm;
	243	};
	244
	245	/*
	246	* Macro for looking up the in_multi record for a given IP multicast address
	247	* on a given interface. If no matching record is found, "inm" is set null.
	248	*/
	249	#define IN_LOOKUP_MULTI(addr, ifp, inm) \
	250	/* struct in_addr addr; */ \
	251	/* struct ifnet ifp; / \
	252	/* struct in_multi inm; / \
	253	do { \
9bccf70c	254	struct ifmultiaddr *ifma; \
1c79356b	255	\
9bccf70c	256	LIST_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { \
1c79356b A	257	if (ifma->ifma_addr->sa_family == AF_INET \
	258	&& ((struct sockaddr_in *)ifma->ifma_addr)->sin_addr.s_addr == \
	259	(addr).s_addr) \
	260	break; \
	261	} \
	262	(inm) = ifma ? ifma->ifma_protospec : 0; \
	263	} while(0)
	264
	265	/*
	266	* Macro to step through all of the in_multi records, one at a time.
	267	* The current position is remembered in "step", which the caller must
	268	* provide. IN_FIRST_MULTI(), below, must be called to initialize "step"
	269	* and get the first record. Both macros return a NULL "inm" when there
	270	* are no remaining records.
	271	*/
	272	#define IN_NEXT_MULTI(step, inm) \
	273	/* struct in_multistep step; */ \
	274	/* struct in_multi inm; / \
	275	do { \
	276	if (((inm) = (step).i_inm) != NULL) \
9bccf70c	277	(step).i_inm = LIST_NEXT((step).i_inm, inm_link); \
1c79356b A	278	} while(0)
	279
	280	#define IN_FIRST_MULTI(step, inm) \
	281	/* struct in_multistep step; */ \
	282	/* struct in_multi inm; / \
	283	do { \
9bccf70c	284	(step).i_inm = LIST_FIRST(&in_multihead); \
1c79356b A	285	IN_NEXT_MULTI((step), (inm)); \
	286	} while(0)
	287
	288	struct route;
	289	struct in_multi in_addmulti __P((struct in_addr , struct ifnet *));
	290	void in_delmulti __P((struct in_multi *));
	291	int in_control __P((struct socket , u_long, caddr_t, struct ifnet ,
	292	struct proc *));
	293	void in_rtqdrain __P((void));
	294	void ip_input __P((struct mbuf *));
9bccf70c	295	int in_ifadown __P((struct ifaddr *ifa, int));
1c79356b A	296	void in_ifscrub __P((struct ifnet , struct in_ifaddr ));
	297	int ipflow_fastforward __P((struct mbuf *));
	298	void ipflow_create __P((const struct route , struct mbuf ));
	299	void ipflow_slowtimo __P((void));
	300
9bccf70c A	301	#endif /* __APPLE_API_PRIVATE */
	302	#endif /* _KERNEL */
	303
1c79356b A	304	/* INET6 stuff */
1c79356b A	305	#include <netinet6/in6_var.h>
1c79356b A	306
1c79356b A	307	#endif /* _NETINET_IN_VAR_H_ */