/* $OpenBSD: in_var.h,v 1.17 2011/10/13 18:23:40 claudio 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" */ struct sockaddr_in ifra_addr; 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; extern struct ifqueue ipintrq; /* ip packet input queue */ extern int inetctlerrmap[]; void in_socktrim(struct sockaddr_in *); /* * Macro for finding the interface (ifnet structure) corresponding to one * of our IP addresses. */ #define INADDR_TO_IFP(addr, ifp, rdomain) \ /* struct in_addr addr; */ \ /* struct ifnet *ifp; */ \ do { \ struct in_ifaddr *ia; \ \ for (ia = TAILQ_FIRST(&in_ifaddr); ia != TAILQ_END(&in_ifaddr) && \ (ia->ia_ifp->if_rdomain != rtable_l2(rdomain) || \ ia->ia_addr.sin_addr.s_addr != (addr).s_addr); \ ia = TAILQ_NEXT(ia, ia_list)) \ continue; \ (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 { \ for ((ia) = TAILQ_FIRST(&in_ifaddr); \ (ia) != TAILQ_END(&in_ifaddr) && (ia)->ia_ifp != (ifp); \ (ia) = TAILQ_NEXT((ia), ia_list)) \ continue; \ } 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 */ 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 /* * 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; */ \ do { \ struct in_ifaddr *ia; \ \ IFP_TO_IA((ifp), ia); \ if (ia == NULL) \ (inm) = NULL; \ else \ for ((inm) = LIST_FIRST(&ia->ia_multiaddrs); \ (inm) != LIST_END(&ia->ia_multiaddrs) && \ (inm)->inm_addr.s_addr != (addr).s_addr; \ (inm) = LIST_NEXT(inm, inm_list)) \ continue; \ } while (/* CONSTCOND */ 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((inm), inm_list); \ else \ while ((step).i_ia != NULL) { \ (inm) = LIST_FIRST(&(step).i_ia->ia_multiaddrs); \ (step).i_ia = TAILQ_NEXT((step).i_ia, ia_list); \ if ((inm) != NULL) { \ (step).i_inm = LIST_NEXT((inm), inm_list); \ break; \ } \ } \ } while (/* CONSTCOND */ 0) #define IN_FIRST_MULTI(step, inm) \ /* struct in_multistep step; */ \ /* struct in_multi *inm; */ \ do { \ (step).i_ia = TAILQ_FIRST(&in_ifaddr); \ (step).i_inm = NULL; \ IN_NEXT_MULTI((step), (inm)); \ } while (/* CONSTCOND */ 0) int in_ifinit(struct ifnet *, struct in_ifaddr *, struct sockaddr_in *, int, 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 *); int inet_nat64(int, const void *, void *, const void *, u_int8_t); int inet_nat46(int, const void *, void *, const void *, u_int8_t); int in_mask2len(struct in_addr *); #endif /* INET6 stuff */ #include #endif /* _NETINET_IN_VAR_H_ */