/*      $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);
}