392 lines
8.9 KiB
C
392 lines
8.9 KiB
C
/* $NetBSD: altq_conf.c,v 1.22 2021/09/21 14:30:15 christos Exp $ */
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/* $KAME: altq_conf.c,v 1.24 2005/04/13 03:44:24 suz Exp $ */
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/*
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* Copyright (C) 1997-2003
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* Sony Computer Science Laboratories Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: altq_conf.c,v 1.22 2021/09/21 14:30:15 christos Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_altq.h"
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#include "opt_inet.h"
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#endif
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/*
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* altq device interface.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/errno.h>
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#include <sys/kauth.h>
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#include <net/if.h>
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#include <altq/altq.h>
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#include <altq/altqconf.h>
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#include <altq/altq_conf.h>
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#ifdef ALTQ3_COMPAT
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#ifdef ALTQ_CBQ
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altqdev_decl(cbq);
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#endif
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#ifdef ALTQ_WFQ
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altqdev_decl(wfq);
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#endif
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#ifdef ALTQ_AFMAP
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altqdev_decl(afm);
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#endif
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#ifdef ALTQ_FIFOQ
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altqdev_decl(fifoq);
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#endif
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#ifdef ALTQ_RED
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altqdev_decl(red);
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#endif
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#ifdef ALTQ_RIO
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altqdev_decl(rio);
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#endif
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#ifdef ALTQ_LOCALQ
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altqdev_decl(localq);
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#endif
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#ifdef ALTQ_HFSC
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altqdev_decl(hfsc);
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#endif
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#ifdef ALTQ_CDNR
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altqdev_decl(cdnr);
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#endif
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#ifdef ALTQ_BLUE
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altqdev_decl(blue);
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#endif
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#ifdef ALTQ_PRIQ
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altqdev_decl(priq);
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#endif
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#ifdef ALTQ_JOBS
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altqdev_decl(jobs);
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#endif
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/*
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* altq minor device (discipline) table
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*/
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static struct altqsw altqsw[] = { /* minor */
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{"altq", noopen, noclose, noioctl}, /* 0 (reserved) */
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#ifdef ALTQ_CBQ
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{"cbq", cbqopen, cbqclose, cbqioctl}, /* 1 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 1 */
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#endif
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#ifdef ALTQ_WFQ
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{"wfq", wfqopen, wfqclose, wfqioctl}, /* 2 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 2 */
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#endif
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#ifdef ALTQ_AFMAP
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{"afm", afmopen, afmclose, afmioctl}, /* 3 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 3 */
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#endif
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#ifdef ALTQ_FIFOQ
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{"fifoq", fifoqopen, fifoqclose, fifoqioctl}, /* 4 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 4 */
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#endif
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#ifdef ALTQ_RED
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{"red", redopen, redclose, redioctl}, /* 5 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 5 */
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#endif
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#ifdef ALTQ_RIO
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{"rio", rioopen, rioclose, rioioctl}, /* 6 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 6 */
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#endif
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#ifdef ALTQ_LOCALQ
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{"localq",localqopen, localqclose, localqioctl}, /* 7 (local use) */
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#else
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{"noq", noopen, noclose, noioctl}, /* 7 (local use) */
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#endif
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#ifdef ALTQ_HFSC
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{"hfsc",hfscopen, hfscclose, hfscioctl}, /* 8 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 8 */
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#endif
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#ifdef ALTQ_CDNR
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{"cdnr",cdnropen, cdnrclose, cdnrioctl}, /* 9 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 9 */
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#endif
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#ifdef ALTQ_BLUE
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{"blue",blueopen, blueclose, blueioctl}, /* 10 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 10 */
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#endif
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#ifdef ALTQ_PRIQ
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{"priq",priqopen, priqclose, priqioctl}, /* 11 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 11 */
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#endif
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#ifdef ALTQ_JOBS
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{"jobs",jobsopen, jobsclose, jobsioctl}, /* 12 */
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#else
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{"noq", noopen, noclose, noioctl}, /* 12 */
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#endif
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};
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/*
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* altq major device support
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*/
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int naltqsw = sizeof (altqsw) / sizeof (altqsw[0]);
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dev_type_open(altqopen);
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dev_type_close(altqclose);
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dev_type_ioctl(altqioctl);
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const struct cdevsw altq_cdevsw = {
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.d_open = altqopen,
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.d_close = altqclose,
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.d_read = noread,
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.d_write = nowrite,
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.d_ioctl = altqioctl,
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.d_stop = nostop,
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.d_tty = notty,
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.d_poll = nopoll,
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.d_mmap = nommap,
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.d_kqfilter = nokqfilter,
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.d_discard = nodiscard,
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.d_flag = D_OTHER,
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};
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int
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altqopen(dev_t dev, int flag, int fmt, struct lwp *l)
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{
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int unit = minor(dev);
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if (unit == 0)
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return (0);
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if (unit < naltqsw)
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return (*altqsw[unit].d_open)(dev, flag, fmt, l);
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return ENXIO;
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}
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int
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altqclose(dev_t dev, int flag, int fmt, struct lwp *l)
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{
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int unit = minor(dev);
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if (unit == 0)
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return (0);
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if (unit < naltqsw)
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return (*altqsw[unit].d_close)(dev, flag, fmt, l);
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return ENXIO;
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}
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int
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altqioctl(dev_t dev, ioctlcmd_t cmd, void *addr, int flag, struct lwp *l)
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{
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int unit = minor(dev);
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if (unit == 0) {
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struct ifnet *ifp;
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struct altqreq *typereq;
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struct tbrreq *tbrreq;
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int error;
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switch (cmd) {
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case ALTQGTYPE:
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case ALTQTBRGET:
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break;
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default:
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if ((error = kauth_authorize_network(
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l->l_cred, KAUTH_NETWORK_ALTQ,
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KAUTH_REQ_NETWORK_ALTQ_CONF, NULL, NULL,
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NULL)) != 0)
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return (error);
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break;
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}
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switch (cmd) {
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case ALTQGTYPE:
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typereq = (struct altqreq *)addr;
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if ((ifp = ifunit(typereq->ifname)) == NULL)
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return (EINVAL);
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typereq->arg = (u_long)ifp->if_snd.altq_type;
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return (0);
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case ALTQTBRSET:
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tbrreq = (struct tbrreq *)addr;
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if ((ifp = ifunit(tbrreq->ifname)) == NULL)
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return (EINVAL);
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return tbr_set(&ifp->if_snd, &tbrreq->tb_prof);
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case ALTQTBRGET:
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tbrreq = (struct tbrreq *)addr;
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if ((ifp = ifunit(tbrreq->ifname)) == NULL)
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return (EINVAL);
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return tbr_get(&ifp->if_snd, &tbrreq->tb_prof);
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default:
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return (EINVAL);
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}
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}
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if (unit < naltqsw)
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return (*altqsw[unit].d_ioctl)(dev, cmd, addr, flag, l);
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return ENXIO;
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}
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#ifdef __FreeBSD__
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static int altq_devsw_installed = 0;
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#endif
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#ifdef __FreeBSD__
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static void
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altq_drvinit(void *unused)
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{
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int unit;
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#if 0
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mtx_init(&altq_mtx, "altq global lock", MTX_DEF);
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#endif
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altq_devsw_installed = 1;
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printf("altq: attached. Major number assigned automatically.\n");
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/* create minor devices */
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for (unit = 0; unit < naltqsw; unit++) {
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if (unit == 0 || altqsw[unit].d_open != NULL)
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altqsw[unit].dev = make_dev(&altq_cdevsw, unit,
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UID_ROOT, GID_WHEEL, 0644, "altq/%s",
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altqsw[unit].d_name);
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}
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}
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SYSINIT(altqdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,altq_drvinit,NULL)
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#endif /* FreeBSD */
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#ifdef ALTQ_KLD
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/*
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* KLD support
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*/
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static int altq_module_register(struct altq_module_data *);
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static int altq_module_deregister(struct altq_module_data *);
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static struct altq_module_data *altq_modules[ALTQT_MAX];
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#if __FreeBSD_version < 502103
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static struct altqsw noqdisc = {"noq", noopen, noclose, noioctl};
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#else
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static struct altqsw noqdisc = {"noq"};
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#endif
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void altq_module_incref(int type)
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{
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if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL)
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return;
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altq_modules[type]->ref++;
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}
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void altq_module_declref(int type)
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{
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if (type < 0 || type >= ALTQT_MAX || altq_modules[type] == NULL)
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return;
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altq_modules[type]->ref--;
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}
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static int
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altq_module_register(struct altq_module_data *mdata)
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{
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int type = mdata->type;
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if (type < 0 || type >= ALTQT_MAX)
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return (EINVAL);
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#if (__FreeBSD_version < 502103)
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if (altqsw[type].d_open != noopen)
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#else
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if (altqsw[type].d_open != NULL)
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#endif
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return (EBUSY);
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altqsw[type] = *mdata->altqsw; /* set discipline functions */
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altq_modules[type] = mdata; /* save module data pointer */
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#if (__FreeBSD_version < 502103)
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make_dev(&altq_cdevsw, type, UID_ROOT, GID_WHEEL, 0644,
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"altq/%s", altqsw[type].d_name);
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#else
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altqsw[type].dev = make_dev(&altq_cdevsw, type, UID_ROOT, GID_WHEEL,
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0644, "altq/%s", altqsw[type].d_name);
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#endif
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return (0);
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}
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static int
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altq_module_deregister(struct altq_module_data *mdata)
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{
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int type = mdata->type;
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if (type < 0 || type >= ALTQT_MAX)
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return (EINVAL);
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if (mdata != altq_modules[type])
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return (EINVAL);
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if (altq_modules[type]->ref > 0)
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return (EBUSY);
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#if (__FreeBSD_version < 502103)
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destroy_dev(makedev(CDEV_MAJOR, type));
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#else
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destroy_dev(altqsw[type].dev);
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#endif
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altqsw[type] = noqdisc;
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altq_modules[type] = NULL;
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return (0);
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}
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int
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altq_module_handler(module_t mod, int cmd, void *arg)
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{
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struct altq_module_data *data = (struct altq_module_data *)arg;
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int error = 0;
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switch (cmd) {
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case MOD_LOAD:
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error = altq_module_register(data);
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break;
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case MOD_UNLOAD:
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error = altq_module_deregister(data);
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break;
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default:
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error = EINVAL;
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break;
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}
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return (error);
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}
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#endif /* ALTQ_KLD */
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#endif /* ALTQ3_COMPAT */
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