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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This 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 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
- */
-
- #ifndef _NETINET_IN_VAR_H_
- #define _NETINET_IN_VAR_H_
-
- #include <sys/queue.h>
- #include <sys/kern_event.h>
-
- /*
- * 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;
- u_long dlt;
- };
-
-
- /*
- * 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;
- };
-
-
-
- /*
- * 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
-
- /*
- * 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))
-
-
- #ifdef KERNEL
- 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; */ \
- { \
- register struct in_ifaddr *ia; \
- \
- for (ia = in_ifaddrhead.tqh_first; \
- ia != NULL && ((ia->ia_ifp->if_flags & IFF_POINTOPOINT)? \
- IA_DSTSIN(ia):IA_SIN(ia))->sin_addr.s_addr != (addr).s_addr; \
- ia = ia->ia_link.tqe_next) \
- continue; \
- if (ia == NULL) \
- for (ia = in_ifaddrhead.tqh_first; \
- ia != NULL; \
- ia = ia->ia_link.tqe_next) \
- if (ia->ia_ifp->if_flags & IFF_POINTOPOINT && \
- 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) = in_ifaddrhead.tqh_first; \
- (ia) != NULL && (ia)->ia_ifp != (ifp); \
- (ia) = (ia)->ia_link.tqe_next) \
- continue; \
- }
- #endif
-
- /*
- * 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*/
- };
-
- #ifdef KERNEL
-
- #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 { \
- 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_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 = (step).i_inm->inm_link.le_next; \
- } while(0)
-
- #define IN_FIRST_MULTI(step, inm) \
- /* struct in_multistep step; */ \
- /* struct in_multi *inm; */ \
- do { \
- (step).i_inm = in_multihead.lh_first; \
- 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));
- 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 /* KERNEL */
- #if INET6
- /* INET6 stuff */
- #include <netinet6/in6_var.h>
- #endif
-
- #endif /* _NETINET_IN_VAR_H_ */
-