/* $OpenBSD: in_var.h,v 1.26 2013/10/23 15:12:42 mpi Exp $ */ /* $NetBSD: in_var.h,v 1.16 1996/02/13 23:42:15 christos Exp $ */ /* * 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. 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 _NETINET_IN_VAR_H_ #define _NETINET_IN_VAR_H_ #include /* * 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_net{,mask} in host order */ u_int32_t ia_net; /* network number of interface */ u_int32_t ia_netmask; /* mask of net part */ TAILQ_ENTRY(in_ifaddr) ia_list; /* 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 */ LIST_HEAD(, in_multi) ia_multiaddrs; /* list of multicast addresses */ struct in_multi *ia_allhosts; /* multicast address record for the allhosts multicast group */ }; struct in_aliasreq { char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ union { struct sockaddr_in ifrau_addr; int ifrau_align; } ifra_ifrau; #ifndef ifra_addr #define ifra_addr ifra_ifrau.ifrau_addr #endif struct sockaddr_in ifra_dstaddr; #define ifra_broadaddr ifra_dstaddr 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 TAILQ_HEAD(in_ifaddrhead, in_ifaddr); extern struct in_ifaddrhead in_ifaddr; /* * Macro for finding the interface (ifnet structure) corresponding to one * of our IP addresses. */ #define INADDR_TO_IFP(addr, ifp, rtableid) \ /* struct in_addr addr; */ \ /* struct ifnet *ifp; */ \ do { \ struct in_ifaddr *ia; \ \ TAILQ_FOREACH(ia, &in_ifaddr, ia_list) \ if (ia->ia_ifp->if_rdomain == rtable_l2(rtableid) && \ ia->ia_addr.sin_addr.s_addr == (addr).s_addr) \ break; \ (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \ } while (/* CONSTCOND */ 0) /* * 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; */ \ do { \ TAILQ_FOREACH((ia), &in_ifaddr, ia_list) \ if ((ia)->ia_ifp == (ifp)) \ break; \ } while (/* CONSTCOND */ 0) #endif /* * Per-interface router version information. */ struct router_info { struct ifnet *rti_ifp; int rti_type; /* type of router on this interface */ int rti_age; /* time since last v1 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. * 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 in_ifaddr *inm_ia; /* back pointer to in_ifaddr */ #define inm_ifp inm_ia->ia_ifp u_int inm_refcount; /* no. membership claims by sockets */ u_int inm_timer; /* IGMP membership report timer */ LIST_ENTRY(in_multi) inm_list; /* list of multicast addresses */ u_int inm_state; /* state of membership */ struct router_info *inm_rti; /* router version info */ }; #ifdef _KERNEL /* * Macro for iterating over all the in_multi records linked to a given * interface. */ #define IN_FOREACH_MULTI(ia, ifp, inm) \ /* struct in_ifaddr *ia; */ \ /* struct ifnet *ifp; */ \ /* struct in_multi *inm; */ \ IFP_TO_IA((ifp), ia); \ if (ia != NULL) \ LIST_FOREACH((inm), &ia->ia_multiaddrs, inm_list) \ /* * 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; */ \ do { \ struct in_ifaddr *ia; \ \ (inm) = NULL; \ IN_FOREACH_MULTI(ia, ifp, inm) \ if ((inm)->inm_addr.s_addr == (addr).s_addr) \ break; \ } while (/* CONSTCOND */ 0) int in_ifinit(struct ifnet *, struct in_ifaddr *, struct sockaddr_in *, int); struct in_multi *in_addmulti(struct in_addr *, struct ifnet *); void in_delmulti(struct in_multi *); void in_ifscrub(struct ifnet *, struct in_ifaddr *); int in_control(struct socket *, u_long, caddr_t, struct ifnet *); #endif #endif /* _NETINET_IN_VAR_H_ */