/*      $NetBSD: qop_dummy.c,v 1.7 2002/03/05 04:11:53 itojun Exp $     */
/*      $KAME: qop_dummy.c,v 1.5 2001/12/03 08:20:55 kjc Exp $  */
/*
 * Copyright (C) 1999-2000
 *      Sony Computer Science Laboratories, Inc.  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 SONY CSL 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 SONY CSL 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/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <stdio.h>
#include <errno.h>
#include <syslog.h>
#include <string.h>

#include <altq/altq.h>
#include "altq_qop.h"

int null_interface_parser(const char *, int, char **);
int null_class_parser(const char *, const char *, const char *, int, char **);
int qcmd_nop_add_if(const char *);
static int nop_attach(struct ifinfo *);
static int nop_detach(struct ifinfo *);
static int nop_clear(struct ifinfo *);
static int nop_enable(struct ifinfo *);
static int nop_disable(struct ifinfo *);
static int nop_add_class(struct classinfo *);
static int nop_modify_class(struct classinfo *, void *);
static int nop_delete_class(struct classinfo *);
static int nop_add_filter(struct fltrinfo *);
static int nop_delete_filter(struct fltrinfo *);

struct qdisc_ops nop_qdisc = {
        ALTQT_NONE,
        "nop",
        nop_attach,
        nop_detach,
        nop_clear,
        nop_enable,
        nop_disable,
        nop_add_class,
        nop_modify_class,
        nop_delete_class,
        nop_add_filter,
        nop_delete_filter,
};

#define EQUAL(s1, s2)   (strcmp((s1), (s2)) == 0)

/*
 * parser interface for null interface
 */
int
null_interface_parser(const char *ifname, int argc, char **argv)
{
        u_int   bandwidth = 0;
        u_int   tbrsize = 0;

        /*
         * process options
         */
        while (argc > 0) {
                if (EQUAL(*argv, "bandwidth")) {
                        argc--; argv++;
                        if (argc > 0)
                                bandwidth = atobps(*argv);
                } else if (EQUAL(*argv, "tbrsize")) {
                        argc--; argv++;
                        if (argc > 0)
                                tbrsize = atobytes(*argv);
                } else {
                        LOG(LOG_ERR, 0, "Unknown keyword '%s'", *argv);
                        return (0);
                }
                argc--; argv++;
        }

        if (bandwidth != 0)
                if (qcmd_tbr_register(ifname, bandwidth, tbrsize) != 0)
                        return (0);

        /*
         * add a dummy interface since traffic conditioner might need it.
         */
        if (qcmd_nop_add_if(ifname) != 0)
                return (0);
        return (1);
}

int
null_class_parser(const char *ifname, const char *class_name,
                  const char *parent_name, int argc, char **argv)
{
        LOG(LOG_ERR, 0,
            "class cannot be defined without a queueing discipline in %s, line %d",
            altqconfigfile, line_no);
        return (0);
}

/*
 * qcmd api
 */
int
qcmd_nop_add_if(const char *ifname)
{
        int error;
        
        error = qop_add_if(NULL, ifname, 0, &nop_qdisc, NULL);
        if (error != 0)
                LOG(LOG_ERR, errno, "%s: can't add nop on interface '%s'",
                    qoperror(error), ifname);
        return (error);
}

/*
 * qop api
 */
static int nop_attach(struct ifinfo *ifinfo)
{
        return (0);
}

static int nop_detach(struct ifinfo *ifinfo)
{
        return (0);
}

static int nop_clear(struct ifinfo *ifinfo)
{
        return (0);
}

static int nop_enable(struct ifinfo *ifinfo)
{
        return (0);
}

static int nop_disable(struct ifinfo *ifinfo)
{
        return (0);
}

static int nop_add_class(struct classinfo *clinfo)
{
        return (0);
}

static int nop_modify_class(struct classinfo *clinfo, void *arg)
{
        return (0);
}

static int nop_delete_class(struct classinfo *clinfo)
{
        return (0);
}

static int nop_add_filter(struct fltrinfo *fltrinfo)
{
        return (0);
}

static int nop_delete_filter(struct fltrinfo *fltrinfo)
{
        return (0);
}