+++ /dev/null
-/*
- * Copyright (c) 2011-2013 Apple Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-
-/*
- * Copyright (c) 2008 The DragonFly Project. All rights reserved.
- *
- * This code is derived from software contributed to The DragonFly Project
- * by Matthew Dillon <dillon@backplane.com>
- *
- * 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.
- * 3. Neither the name of The DragonFly Project nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific, prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
- * COPYRIGHT HOLDERS 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.
- *
- * $DragonFly: src/sys/net/altq/altq_fairq.c,v 1.2 2008/05/14 11:59:23 sephe Exp $
- */
-/*
- * Matt: I gutted altq_priq.c and used it as a skeleton on which to build
- * fairq. The fairq algorithm is completely different then priq, of course,
- * but because I used priq's skeleton I believe I should include priq's
- * copyright.
- *
- * Copyright (C) 2000-2003
- * 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.
- */
-
-#if PF_ALTQ && PKTSCHED_FAIRQ
-
-#include <sys/cdefs.h>
-#include <sys/param.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/systm.h>
-#include <sys/errno.h>
-#include <sys/kernel.h>
-
-#include <net/if.h>
-#include <net/pfvar.h>
-#include <net/net_osdep.h>
-#include <net/altq/altq.h>
-#include <net/altq/altq_fairq.h>
-#include <netinet/in.h>
-
-/*
- * function prototypes
- */
-static int altq_fairq_enqueue(struct ifaltq *, struct mbuf *);
-static struct mbuf *altq_fairq_dequeue(struct ifaltq *, enum altdq_op);
-static int altq_fairq_request(struct ifaltq *, enum altrq, void *);
-
-int
-altq_fairq_pfattach(struct pf_altq *a)
-{
- struct ifnet *ifp;
- int error;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if ((ifp = ifunit(a->ifname)) == NULL || a->altq_disc == NULL)
- return (EINVAL);
-
- IFCQ_LOCK(&ifp->if_snd);
- error = altq_attach(IFCQ_ALTQ(&ifp->if_snd), ALTQT_FAIRQ, a->altq_disc,
- altq_fairq_enqueue, altq_fairq_dequeue, NULL, altq_fairq_request);
- IFCQ_UNLOCK(&ifp->if_snd);
-
- return (error);
-}
-
-int
-altq_fairq_add(struct pf_altq *a)
-{
- struct fairq_if *fif;
- struct ifnet *ifp;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if ((ifp = ifunit(a->ifname)) == NULL)
- return (EINVAL);
- if (!ALTQ_IS_READY(IFCQ_ALTQ(&ifp->if_snd)))
- return (ENODEV);
-
- fif = fairq_alloc(ifp, M_WAITOK, TRUE);
- if (fif == NULL)
- return (ENOMEM);
-
- /* keep the state in pf_altq */
- a->altq_disc = fif;
-
- return (0);
-}
-
-int
-altq_fairq_remove(struct pf_altq *a)
-{
- struct fairq_if *fif;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if ((fif = a->altq_disc) == NULL)
- return (EINVAL);
- a->altq_disc = NULL;
-
- return (fairq_destroy(fif));
-}
-
-int
-altq_fairq_add_queue(struct pf_altq *a)
-{
- struct fairq_if *fif;
- struct fairq_opts *opts = &a->pq_u.fairq_opts;
- int err;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if ((fif = a->altq_disc) == NULL)
- return (EINVAL);
-
- IFCQ_LOCK(fif->fif_ifq);
- err = fairq_add_queue(fif, a->priority, a->qlimit, a->bandwidth,
- opts->nbuckets, opts->flags, opts->hogs_m1, opts->lssc_m1,
- opts->lssc_d, opts->lssc_m2, a->qid, NULL);
- IFCQ_UNLOCK(fif->fif_ifq);
-
- return (err);
-}
-
-int
-altq_fairq_remove_queue(struct pf_altq *a)
-{
- struct fairq_if *fif;
- int err;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if ((fif = a->altq_disc) == NULL)
- return (EINVAL);
-
- IFCQ_LOCK(fif->fif_ifq);
- err = fairq_remove_queue(fif, a->qid);
- IFCQ_UNLOCK(fif->fif_ifq);
-
- return (err);
-}
-
-int
-altq_fairq_getqstats(struct pf_altq *a, void *ubuf, int *nbytes)
-{
- struct ifclassq *ifq = NULL;
- struct fairq_if *fif;
- struct fairq_classstats stats;
- int error = 0;
-
- lck_mtx_assert(pf_lock, LCK_MTX_ASSERT_OWNED);
-
- if ((unsigned)*nbytes < sizeof (stats))
- return (EINVAL);
-
- if ((fif = altq_lookup(a->ifname, ALTQT_FAIRQ)) == NULL)
- return (EBADF);
-
- ifq = fif->fif_ifq;
- IFCQ_LOCK_ASSERT_HELD(ifq); /* lock held by altq_lookup */
- error = fairq_get_class_stats(fif, a->qid, &stats);
- IFCQ_UNLOCK(ifq);
- if (error != 0)
- return (error);
-
- if ((error = copyout((caddr_t)&stats, (user_addr_t)(uintptr_t)ubuf,
- sizeof (stats))) != 0)
- return (error);
-
- *nbytes = sizeof (stats);
-
- return (0);
-}
-
-static int
-altq_fairq_request(struct ifaltq *altq, enum altrq req, void *arg)
-{
- struct fairq_if *fif = (struct fairq_if *)altq->altq_disc;
-
- switch (req) {
- case ALTRQ_PURGE:
- fairq_purge(fif);
- break;
-
- case ALTRQ_PURGE_SC:
- /* not supported for ALTQ instance */
- break;
-
- case ALTRQ_EVENT:
- fairq_event(fif, (cqev_t)arg);
- break;
-
- case ALTRQ_THROTTLE:
- default:
- break;
- }
- return (0);
-}
-
-/*
- * altq_fairq_enqueue is an enqueue function to be registered to
- * (*altq_enqueue) in struct ifaltq.
- */
-static int
-altq_fairq_enqueue(struct ifaltq *altq, struct mbuf *m)
-{
- /* grab class set by classifier */
- if (!(m->m_flags & M_PKTHDR)) {
- /* should not happen */
- printf("%s: packet for %s does not have pkthdr\n", __func__,
- if_name(altq->altq_ifcq->ifcq_ifp));
- m_freem(m);
- return (ENOBUFS);
- }
-
- return (fairq_enqueue(altq->altq_disc, NULL, m, m_pftag(m)));
-}
-
-/*
- * altq_fairq_dequeue is a dequeue function to be registered to
- * (*altq_dequeue) in struct ifaltq.
- *
- * note: ALTDQ_POLL returns the next packet without removing the packet
- * from the queue. ALTDQ_REMOVE is a normal dequeue operation.
- * ALTDQ_REMOVE must return the same packet if called immediately
- * after ALTDQ_POLL.
- */
-static struct mbuf *
-altq_fairq_dequeue(struct ifaltq *altq, enum altdq_op op)
-{
- return (fairq_dequeue(altq->altq_disc, (cqdq_op_t)op));
-}
-#endif /* PF_ALTQ && PKTSCHED_FAIRQ */
projects / apple / xnu.git / blobdiff