/*      $OpenBSD: if.h,v 1.91 2007/06/25 16:37:58 henning Exp $ */
/*      $NetBSD: if_compat.h,v 1.2 2008/06/18 09:06:27 yamt Exp $       */

/*
 * Copyright (c) 1982, 1986, 1989, 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.
 *
 *      @(#)if.h        8.1 (Berkeley) 6/10/93
 */

#ifndef _NET_IF_COMPAT_H_
#define _NET_IF_COMPAT_H_

#include <sys/queue.h>

/*
 * interface groups
 */

#define IFG_ALL         "all"           /* group contains all interfaces */
#define IFG_EGRESS      "egress"        /* if(s) default route(s) point to */

struct ifg_group {
        char                             ifg_group[IFNAMSIZ];
        u_int                            ifg_refcnt;
        void                            *ifg_pf_kif;
        int                              ifg_carp_demoted;
        TAILQ_HEAD(, ifg_member)         ifg_members;
        TAILQ_ENTRY(ifg_group)           ifg_next;
};

struct ifg_member {
        TAILQ_ENTRY(ifg_member)  ifgm_next;
        struct ifnet            *ifgm_ifp;
};

struct ifg_list {
        struct ifg_group        *ifgl_group;
        TAILQ_ENTRY(ifg_list)    ifgl_next;
};

TAILQ_HEAD(ifg_list_head, ifg_list);

struct ifg_req {
        union {
                char                     ifgrqu_group[IFNAMSIZ];
                char                     ifgrqu_member[IFNAMSIZ];
        } ifgrq_ifgrqu;
#define ifgrq_group     ifgrq_ifgrqu.ifgrqu_group
#define ifgrq_member    ifgrq_ifgrqu.ifgrqu_member
};

struct ifg_attrib {
        int     ifg_carp_demoted;
};

/*
 * Used to lookup groups for an interface
 */
struct ifgroupreq {
        char    ifgr_name[IFNAMSIZ];
        u_int   ifgr_len;
        union {
                char                     ifgru_group[IFNAMSIZ];
                struct  ifg_req         *ifgru_groups;
                struct  ifg_attrib       ifgru_attrib;
        } ifgr_ifgru;
#define ifgr_group      ifgr_ifgru.ifgru_group
#define ifgr_groups     ifgr_ifgru.ifgru_groups
#define ifgr_attrib     ifgr_ifgru.ifgru_attrib
};

#ifdef _KERNEL
void    if_init_groups(struct ifnet *);
void    if_destroy_groups(struct ifnet *);
struct  ifg_list_head *if_get_groups(struct ifnet *);

struct  ifg_group *if_creategroup(const char *);
int     if_addgroup(struct ifnet *, const char *);
int     if_delgroup(struct ifnet *, const char *);
void    if_group_routechange(struct sockaddr *, struct sockaddr *);
#endif /* _KERNEL */

#endif /* !_NET_IF_COMPAT_H_ */