/*      $NetBSD: if_agrsoftc.c,v 1.4 2009/03/15 21:23:31 cegger Exp $   */

/*-
* Copyright (c)2005 YAMAMOTO Takashi,
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_agrsoftc.c,v 1.4 2009/03/15 21:23:31 cegger Exp $");

#include <sys/param.h>
#include <sys/callout.h>
#include <sys/malloc.h>

#include <net/if.h>
#include <net/if_ether.h>

#include <net/agr/if_agrvar_impl.h>

/*
* these functions are isolated from if_agr.c to avoid inclusion of if_ether.h.
*/

struct agr_softc *
agr_alloc_softc(void)
{
       struct agr_softc *sc;
       union {
               struct ifnet u_if;
               struct ethercom u_ec;
       } *u;

       /*
        * as we don't know our if_type yet..
        */

       sc = malloc(sizeof(*sc) - sizeof(sc->sc_if) + sizeof(*u),
           M_DEVBUF, M_WAITOK | M_ZERO);

       return sc;
}

void
agr_free_softc(struct agr_softc *sc)
{

       free(sc, M_DEVBUF);
}