home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1985, 1986 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.
- *
- * from: @(#)in_var.h 7.6 (Berkeley) 6/28/90
- * $Id: in_var.h,v 1.4 1993/12/08 23:48:05 hpeyerl Exp $
- */
-
- #ifndef _NETINET_IN_VAR_H_
- #define _NETINET_IN_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.
- */
- 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 */
- struct in_ifaddr *ia_next; /* next in list of internet addresses */
- 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_multi *ia_multiaddrs; /*list of multicast addresses */
- };
-
- 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;
- };
- /*
- * 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))
-
- #ifdef KERNEL
- struct in_ifaddr *in_ifaddr;
- struct in_ifaddr *in_iaonnetof();
- struct ifqueue ipintrq; /* ip packet input queue */
- #endif
-
- #ifdef KERNEL
- /*
- * 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_ifaddr; \
- ia != NULL && IA_SIN(ia)->sin_addr.s_addr != (addr).s_addr; \
- ia = ia->ia_next) \
- continue; \
- (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_ifaddr; \
- (ia) != NULL && (ia)->ia_ifp != (ifp); \
- (ia) = (ia)->ia_next) \
- continue; \
- }
- #endif
-
- /*
- * Internet multicast address structure. There is one of these for each IP
- * multicast group to which this host belongs on a given network interface.
- * They are kept in a linked list, rooted in the interface's in_ifaddr
- * structure.
- */
- struct in_multi {
- struct in_addr inm_addr; /* IP multicast address */
- struct ifnet *inm_ifp; /* back pointer to ifnet */
- struct in_ifaddr *inm_ia; /* back pointer to in_ifaddr */
- u_int inm_refcount; /* no. membership claims by sockets */
- u_int inm_timer; /* IGMP membership report timer */
- struct in_multi *inm_next; /* ptr to next multicast address */
- };
-
- #ifdef KERNEL
- /*
- * Structure used by macros below to remember position when stepping through
- * all of the in_multi records.
- */
- struct in_multistep {
- struct in_ifaddr *i_ia;
- 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" returns NULL.
- */
- #define IN_LOOKUP_MULTI(addr, ifp, inm) \
- /* struct in_addr addr; */ \
- /* struct ifnet *ifp; */ \
- /* struct in_multi *inm; */ \
- { \
- register struct in_ifaddr *ia; \
- \
- IFP_TO_IA((ifp), ia); \
- if (ia == NULL) \
- (inm) = NULL; \
- else \
- for ((inm) = ia->ia_multiaddrs; \
- (inm) != NULL && (inm)->inm_addr.s_addr != (addr).s_addr; \
- (inm) = inm->inm_next) \
- continue; \
- }
-
- /*
- * 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; */ \
- { \
- if (((inm) = (step).i_inm) != NULL) \
- (step).i_inm = (inm)->inm_next; \
- else \
- while ((step).i_ia != NULL) { \
- (inm) = (step).i_ia->ia_multiaddrs; \
- (step).i_ia = (step).i_ia->ia_next; \
- if ((inm) != NULL) { \
- (step).i_inm = (inm)->inm_next; \
- break; \
- } \
- } \
- }
-
- #define IN_FIRST_MULTI(step, inm) \
- /* struct in_multistep step; */ \
- /* struct in_multi *inm; */ \
- { \
- (step).i_ia = in_ifaddr; \
- (step).i_inm = NULL; \
- IN_NEXT_MULTI((step), (inm)); \
- }
-
- struct in_multi *in_addmulti __P((struct in_addr *, struct ifnet *));
- int in_delmulti __P((struct in_multi *));
- #endif
-
- #endif /* !_NETINET_IN_VAR_H_ */
-