FreeBSD/Linux Kernel Cross Reference
sys/net/if_clone.h

     /*
      * 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. 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: @(#)if.h  8.1 (Berkeley) 6/10/93
     * $FreeBSD: src/sys/net/if_var.h,v 1.18.2.16 2003/04/15 18:11:19 fjoe Exp $
     * $FreeBSD: src/sys/net/if.h,v 1.58.2.9 2002/08/30 14:23:38 sobomax Exp $
     * $DragonFly: src/sys/net/if_clone.h,v 1.1 2008/01/11 11:59:40 sephe Exp $
     */
    
    #ifndef _NET_IF_CLONE_H_
    #define _NET_IF_CLONE_H_
    
    #ifdef _KERNEL
    
    #ifndef _SYS_QUEUE_H_
    #include <sys/queue.h>
    #endif
    
    /*
     * Structure describing a `cloning' interface.
     */
    struct if_clone {
            LIST_ENTRY(if_clone) ifc_list;  /* on list of cloners */
            const char      *ifc_name;      /* name of device, e.g. `gif' */
            size_t          ifc_namelen;    /* length of name */
            int             ifc_minifs;     /* minimum number of interfaces */
            int             ifc_maxunit;    /* maximum unit number */
            unsigned char   *ifc_units;     /* bitmap to handle units */
            int             ifc_bmlen;      /* bitmap length */
    
            int             (*ifc_create)(struct if_clone *, int, caddr_t);
            int             (*ifc_destroy)(struct ifnet *);
    };
    
    #define IF_CLONE_INITIALIZER(name, create, destroy, minifs, maxunit)    \
    { { 0 }, name, sizeof(name) - 1, minifs, maxunit, NULL, 0, create, destroy }
    
    /* interface clone event */
    typedef void (*if_clone_event_handler_t)(void *, struct if_clone *);
    EVENTHANDLER_DECLARE(if_clone_event, if_clone_event_handler_t);
    
    struct if_clonereq;     /* XXX, should move definition from net/if.h */
    
    void    if_clone_attach(struct if_clone *);
    void    if_clone_detach(struct if_clone *);
    int     if_clone_create(char *, int, caddr_t);
    int     if_clone_destroy(const char *);
    int     if_clone_list(struct if_clonereq *);
    
    #endif  /* _KERNEL */
    
    #endif /* !_NET_IF_CLONE_H_ */

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