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NetBSD/sys/altq/altq_conf.c

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/* $NetBSD: altq_conf.c,v 1.21 2014/07/25 08:10:31 dholland Exp $ */
/* $KAME: altq_conf.c,v 1.24 2005/04/13 03:44:24 suz Exp $ */
/*
* Copyright (C) 1997-2003
* 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: altq_conf.c,v 1.21 2014/07/25 08:10:31 dholland Exp $");
#ifdef _KERNEL_OPT
#include "opt_altq.h"
#include "opt_inet.h"
#endif
/*
* altq device interface.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/kauth.h>
#include <net/if.h>
#include <altq/altq.h>
#include <altq/altqconf.h>
#include <altq/altq_conf.h>
#ifdef ALTQ3_COMPAT
#ifdef ALTQ_CBQ
altqdev_decl(cbq);
#endif
#ifdef ALTQ_WFQ
altqdev_decl(wfq);
#endif
#ifdef ALTQ_AFMAP
altqdev_decl(afm);
#endif
#ifdef ALTQ_FIFOQ
altqdev_decl(fifoq);
#endif
#ifdef ALTQ_RED
altqdev_decl(red);
#endif
#ifdef ALTQ_RIO
altqdev_decl(rio);
#endif
#ifdef ALTQ_LOCALQ
altqdev_decl(localq);
#endif
#ifdef ALTQ_HFSC
altqdev_decl(hfsc);
#endif
#ifdef ALTQ_CDNR
altqdev_decl(cdnr);
#endif
#ifdef ALTQ_BLUE
altqdev_decl(blue);
#endif
#ifdef ALTQ_PRIQ
altqdev_decl(priq);
#endif
#ifdef ALTQ_JOBS
altqdev_decl(jobs);
#endif
/*
* altq minor device (discipline) table
*/
static struct altqsw altqsw[] = { /* minor */
{"altq", noopen, noclose, noioctl}, /* 0 (reserved) */
#ifdef ALTQ_CBQ
{"cbq", cbqopen, cbqclose, cbqioctl}, /* 1 */
#else
{"noq", noopen, noclose, noioctl}, /* 1 */
#endif
#ifdef ALTQ_WFQ
{"wfq", wfqopen, wfqclose, wfqioctl}, /* 2 */
#else
{"noq", noopen, noclose, noioctl}, /* 2 */
#endif
#ifdef ALTQ_AFMAP
{"afm", afmopen, afmclose, afmioctl}, /* 3 */
#else
{"noq", noopen, noclose, noioctl}, /* 3 */
#endif
#ifdef ALTQ_FIFOQ
{"fifoq", fifoqopen, fifoqclose, fifoqioctl}, /* 4 */
#else
{"noq", noopen, noclose, noioctl}, /* 4 */
#endif
#ifdef ALTQ_RED
{"red", redopen, redclose, redioctl}, /* 5 */
#else
{"noq", noopen, noclose, noioctl}, /* 5 */
#endif
#ifdef ALTQ_RIO
{"rio", rioopen, rioclose, rioioctl}, /* 6 */
#else
{"noq", noopen, noclose, noioctl}, /* 6 */
#endif
#ifdef ALTQ_LOCALQ
{"localq",localqopen, localqclose, localqioctl}, /* 7 (local use) */
#else
{"noq", noopen, noclose, noioctl}, /* 7 (local use) */
#endif
#ifdef ALTQ_HFSC
{"hfsc",hfscopen, hfscclose, hfscioctl}, /* 8 */
#else
{"noq", noopen, noclose, noioctl}, /* 8 */
#endif
#ifdef ALTQ_CDNR
{"cdnr",cdnropen, cdnrclose, cdnrioctl}, /* 9 */
#else
{"noq", noopen, noclose, noioctl}, /* 9 */
#endif
#ifdef ALTQ_BLUE
{"blue",blueopen, blueclose, blueioctl}, /* 10 */
#else
{"noq", noopen, noclose, noioctl}, /* 10 */
#endif
#ifdef ALTQ_PRIQ
{"priq",priqopen, priqclose, priqioctl}, /* 11 */
#else
{"noq", noopen, noclose, noioctl}, /* 11 */
#endif
#ifdef ALTQ_JOBS
{"jobs",jobsopen, jobsclose, jobsioctl}, /* 12 */
#else
{"noq", noopen, noclose, noioctl}, /* 12 */
#endif
};
/*
* altq major device support
*/
int naltqsw = sizeof (altqsw) / sizeof (altqsw[0]);
dev_type_open(altqopen);
dev_type_close(altqclose);
dev_type_ioctl(altqioctl);
const struct cdevsw altq_cdevsw = {
.d_open = altqopen,
.d_close = altqclose,
.d_read = noread,
.d_write = nowrite,
.d_ioctl = altqioctl,
.d_stop = nostop,
.d_tty = notty,
.d_poll = nopoll,
.d_mmap = nommap,
.d_kqfilter = nokqfilter,
.d_discard = nodiscard,
.d_flag = D_OTHER,
};
int
altqopen(dev_t dev, int flag, int fmt, struct lwp *l)
{
int unit = minor(dev);
if (unit == 0)
return (0);
if (unit < naltqsw)
return (*altqsw[unit].d_open)(dev, flag, fmt, l);
return ENXIO;
}
int
altqclose(dev_t dev, int flag, int fmt, struct lwp *l)
{
int unit = minor(dev);
if (unit == 0)
return (0);
if (unit < naltqsw)
return (*altqsw[unit].d_close)(dev, flag, fmt, l);
return ENXIO;
}
int
altqioctl(dev_t dev, ioctlcmd_t cmd, void *addr, int flag, struct lwp *l)
{
int unit = minor(dev);
if (unit == 0) {
struct ifnet *ifp;
struct altqreq *typereq;
struct tbrreq *tbrreq;
int error;
switch (cmd) {
case ALTQGTYPE:
case ALTQTBRGET:
break;
default:
#if (__FreeBSD_version > 400000)
if ((error = suser(p)) != 0)
return (error);
#else
if ((error = kauth_authorize_network(l->l_cred,
KAUTH_NETWORK_ALTQ, KAUTH_REQ_NETWORK_ALTQ_CONF,
NULL, NULL, NULL)) != 0)
return (error);
#endif
break;
}
switch (cmd) {
case ALTQGTYPE:
typereq = (struct altqreq *)addr;
if ((ifp = ifunit(typereq->ifname)) == NULL)
return (EINVAL);
typereq->arg = (u_long)ifp->if_snd.altq_type;
return (0);
case ALTQTBRSET:
tbrreq = (struct tbrreq *)addr;
if ((ifp = ifunit(tbrreq->ifname)) == NULL)
return (EINVAL);
return tbr_set(&ifp->if_snd, &tbrreq->tb_prof);
case ALTQTBRGET:
tbrreq = (struct tbrreq *)addr;
if ((ifp = ifunit(tbrreq->ifname)) == NULL)
return (EINVAL);
return tbr_get(&ifp->if_snd, &tbrreq->tb_prof);
default:
return (EINVAL);
}
}
if (unit < naltqsw)
return (*altqsw[unit].d_ioctl)(dev, cmd, addr, flag, l);
return ENXIO;
}
#ifdef __FreeBSD__
static int altq_devsw_installed = 0;
#endif
#ifdef __FreeBSD__
static void
altq_drvinit(void *unused)
{
int unit;
#if 0
mtx_init(&altq_mtx, "altq global lock", MTX_DEF);
#endif
altq_devsw_installed = 1;
printf("altq: attached. Major number assigned automatically.\n");
/* create minor devices */
for (unit = 0; unit < naltqsw; unit++) {
if (unit == 0 || altqsw[unit].d_open != NULL)
altqsw[unit].dev = make_dev(&altq_cdevsw, unit,
UID_ROOT, GID_WHEEL, 0644, "altq/%s",
altqsw[unit].d_name);
}
}
SYSINIT(altqdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,altq_drvinit,NULL)
#endif /* FreeBSD */
#ifdef ALTQ_KLD
/*
* KLD support
*/
static int altq_module_register(struct altq_module_data *);
static int altq_module_deregister(struct altq_module_data *);
static struct altq_module_data *altq_modules[ALTQT_MAX];
#if __FreeBSD_version < 502103
static struct altqsw noqdisc = {"noq", noopen, noclose, noioctl};
#else
static struct altqsw noqdisc = {"noq"};
#endif
void altq_module_incref(int type)
{
if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL)
return;
altq_modules[type]->ref++;
}
void altq_module_declref(int type)
{
if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL)
return;
altq_modules[type]->ref--;
}
static int
altq_module_register(struct altq_module_data *mdata)
{
int type = mdata->type;
if (type < 0 || type >= ALTQT_MAX)
return (EINVAL);
#if (__FreeBSD_version < 502103)
if (altqsw[type].d_open != noopen)
#else
if (altqsw[type].d_open != NULL)
#endif
return (EBUSY);
altqsw[type] = *mdata->altqsw; /* set discipline functions */
altq_modules[type] = mdata; /* save module data pointer */
#if (__FreeBSD_version < 502103)
make_dev(&altq_cdevsw, type, UID_ROOT, GID_WHEEL, 0644,
"altq/%s", altqsw[type].d_name);
#else
altqsw[type].dev = make_dev(&altq_cdevsw, type, UID_ROOT, GID_WHEEL,
0644, "altq/%s", altqsw[type].d_name);
#endif
return (0);
}
static int
altq_module_deregister(struct altq_module_data *mdata)
{
int type = mdata->type;
if (type < 0 || type >= ALTQT_MAX)
return (EINVAL);
if (mdata != altq_modules[type])
return (EINVAL);
if (altq_modules[type]->ref > 0)
return (EBUSY);
#if (__FreeBSD_version < 502103)
destroy_dev(makedev(CDEV_MAJOR, type));
#else
destroy_dev(altqsw[type].dev);
#endif
altqsw[type] = noqdisc;
altq_modules[type] = NULL;
return (0);
}
int
altq_module_handler(module_t mod, int cmd, void *arg)
{
struct altq_module_data *data = (struct altq_module_data *)arg;
int error = 0;
switch (cmd) {
case MOD_LOAD:
error = altq_module_register(data);
break;
case MOD_UNLOAD:
error = altq_module_deregister(data);
break;
default:
error = EINVAL;
break;
}
return (error);
}
#endif /* ALTQ_KLD */
#endif /* ALTQ3_COMPAT */
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