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-rw-r--r--sys/contrib/altq/altq/altq_priq.c1036
1 files changed, 1036 insertions, 0 deletions
diff --git a/sys/contrib/altq/altq/altq_priq.c b/sys/contrib/altq/altq/altq_priq.c
new file mode 100644
index 000000000000..7211277c4b5a
--- /dev/null
+++ b/sys/contrib/altq/altq/altq_priq.c
@@ -0,0 +1,1036 @@
+/* $KAME: altq_priq.c,v 1.11 2003/09/17 14:23:25 kjc Exp $ */
+/*
+ * 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.
+ */
+/*
+ * priority queue
+ */
+
+#if defined(__FreeBSD__) || defined(__NetBSD__)
+#include "opt_altq.h"
+#if (__FreeBSD__ != 2)
+#include "opt_inet.h"
+#ifdef __FreeBSD__
+#include "opt_inet6.h"
+#endif
+#endif
+#endif /* __FreeBSD__ || __NetBSD__ */
+
+#ifdef ALTQ_PRIQ /* priq is enabled by ALTQ_PRIQ option in opt_altq.h */
+
+#include <sys/param.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/errno.h>
+#include <sys/kernel.h>
+#include <sys/queue.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+
+#include <net/pfvar.h>
+#include <altq/altq.h>
+#include <altq/altq_conf.h>
+#include <altq/altq_priq.h>
+
+/*
+ * function prototypes
+ */
+#ifdef ALTQ3_COMPAT
+static struct priq_if *priq_attach(struct ifaltq *, u_int);
+static int priq_detach(struct priq_if *);
+#endif
+static int priq_clear_interface(struct priq_if *);
+static int priq_request(struct ifaltq *, int, void *);
+static void priq_purge(struct priq_if *);
+static struct priq_class *priq_class_create(struct priq_if *, int, int, int,
+ int);
+static int priq_class_destroy(struct priq_class *);
+static int priq_enqueue(struct ifaltq *, struct mbuf *, struct altq_pktattr *);
+static struct mbuf *priq_dequeue(struct ifaltq *, int);
+
+static int priq_addq(struct priq_class *, struct mbuf *);
+static struct mbuf *priq_getq(struct priq_class *);
+static struct mbuf *priq_pollq(struct priq_class *);
+static void priq_purgeq(struct priq_class *);
+
+#ifdef ALTQ3_COMPAT
+static int priqcmd_if_attach(struct priq_interface *);
+static int priqcmd_if_detach(struct priq_interface *);
+static int priqcmd_add_class(struct priq_add_class *);
+static int priqcmd_delete_class(struct priq_delete_class *);
+static int priqcmd_modify_class(struct priq_modify_class *);
+static int priqcmd_add_filter(struct priq_add_filter *);
+static int priqcmd_delete_filter(struct priq_delete_filter *);
+static int priqcmd_class_stats(struct priq_class_stats *);
+#endif /* ALTQ3_COMPAT */
+
+static void get_class_stats(struct priq_classstats *, struct priq_class *);
+static struct priq_class *clh_to_clp(struct priq_if *, u_int32_t);
+
+#ifdef ALTQ3_COMPAT
+altqdev_decl(priq);
+
+/* pif_list keeps all priq_if's allocated. */
+static struct priq_if *pif_list = NULL;
+#endif /* ALTQ3_COMPAT */
+
+int
+priq_pfattach(struct pf_altq *a)
+{
+ struct ifnet *ifp;
+ int s, error;
+
+ if ((ifp = ifunit(a->ifname)) == NULL || a->altq_disc == NULL)
+ return (EINVAL);
+#ifdef __NetBSD__
+ s = splnet();
+#else
+ s = splimp();
+#endif
+ error = altq_attach(&ifp->if_snd, ALTQT_PRIQ, a->altq_disc,
+ priq_enqueue, priq_dequeue, priq_request, NULL, NULL);
+ splx(s);
+ return (error);
+}
+
+int
+priq_add_altq(struct pf_altq *a)
+{
+ struct priq_if *pif;
+ struct ifnet *ifp;
+
+ if ((ifp = ifunit(a->ifname)) == NULL)
+ return (EINVAL);
+ if (!ALTQ_IS_READY(&ifp->if_snd))
+ return (ENODEV);
+
+ MALLOC(pif, struct priq_if *, sizeof(struct priq_if),
+ M_DEVBUF, M_WAITOK);
+ if (pif == NULL)
+ return (ENOMEM);
+ bzero(pif, sizeof(struct priq_if));
+ pif->pif_bandwidth = a->ifbandwidth;
+ pif->pif_maxpri = -1;
+ pif->pif_ifq = &ifp->if_snd;
+
+ /* keep the state in pf_altq */
+ a->altq_disc = pif;
+
+ return (0);
+}
+
+int
+priq_remove_altq(struct pf_altq *a)
+{
+ struct priq_if *pif;
+
+ if ((pif = a->altq_disc) == NULL)
+ return (EINVAL);
+ a->altq_disc = NULL;
+
+ (void)priq_clear_interface(pif);
+
+ FREE(pif, M_DEVBUF);
+ return (0);
+}
+
+int
+priq_add_queue(struct pf_altq *a)
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+
+ if ((pif = a->altq_disc) == NULL)
+ return (EINVAL);
+
+ /* check parameters */
+ if (a->priority >= PRIQ_MAXPRI)
+ return (EINVAL);
+ if (a->qid == 0)
+ return (EINVAL);
+ if (pif->pif_classes[a->priority] != NULL)
+ return (EBUSY);
+ if (clh_to_clp(pif, a->qid) != NULL)
+ return (EBUSY);
+
+ cl = priq_class_create(pif, a->priority, a->qlimit,
+ a->pq_u.priq_opts.flags, a->qid);
+ if (cl == NULL)
+ return (ENOMEM);
+
+ return (0);
+}
+
+int
+priq_remove_queue(struct pf_altq *a)
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+
+ if ((pif = a->altq_disc) == NULL)
+ return (EINVAL);
+
+ if ((cl = clh_to_clp(pif, a->qid)) == NULL)
+ return (EINVAL);
+
+ return (priq_class_destroy(cl));
+}
+
+int
+priq_getqstats(struct pf_altq *a, void *ubuf, int *nbytes)
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+ struct priq_classstats stats;
+ int error = 0;
+
+ if ((pif = altq_lookup(a->ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ if ((cl = clh_to_clp(pif, a->qid)) == NULL)
+ return (EINVAL);
+
+ if (*nbytes < sizeof(stats))
+ return (EINVAL);
+
+ get_class_stats(&stats, cl);
+
+ if ((error = copyout((caddr_t)&stats, ubuf, sizeof(stats))) != 0)
+ return (error);
+ *nbytes = sizeof(stats);
+ return (0);
+}
+
+/*
+ * bring the interface back to the initial state by discarding
+ * all the filters and classes.
+ */
+static int
+priq_clear_interface(struct priq_if *pif)
+{
+ struct priq_class *cl;
+ int pri;
+
+#ifdef ALTQ3_CLFIER_COMPAT
+ /* free the filters for this interface */
+ acc_discard_filters(&pif->pif_classifier, NULL, 1);
+#endif
+
+ /* clear out the classes */
+ for (pri = 0; pri <= pif->pif_maxpri; pri++)
+ if ((cl = pif->pif_classes[pri]) != NULL)
+ priq_class_destroy(cl);
+
+ return (0);
+}
+
+static int
+priq_request(struct ifaltq *ifq, int req, void *arg)
+{
+ struct priq_if *pif = (struct priq_if *)ifq->altq_disc;
+
+ switch (req) {
+ case ALTRQ_PURGE:
+ priq_purge(pif);
+ break;
+ }
+ return (0);
+}
+
+/* discard all the queued packets on the interface */
+static void
+priq_purge(struct priq_if *pif)
+{
+ struct priq_class *cl;
+ int pri;
+
+ for (pri = 0; pri <= pif->pif_maxpri; pri++) {
+ if ((cl = pif->pif_classes[pri]) != NULL && !qempty(cl->cl_q))
+ priq_purgeq(cl);
+ }
+ if (ALTQ_IS_ENABLED(pif->pif_ifq))
+ pif->pif_ifq->ifq_len = 0;
+}
+
+static struct priq_class *
+priq_class_create(struct priq_if *pif, int pri, int qlimit, int flags, int qid)
+{
+ struct priq_class *cl;
+ int s;
+
+#ifndef ALTQ_RED
+ if (flags & PRCF_RED) {
+#ifdef ALTQ_DEBUG
+ printf("priq_class_create: RED not configured for PRIQ!\n");
+#endif
+ return (NULL);
+ }
+#endif
+
+ if ((cl = pif->pif_classes[pri]) != NULL) {
+ /* modify the class instead of creating a new one */
+#ifdef __NetBSD__
+ s = splnet();
+#else
+ s = splimp();
+#endif
+ if (!qempty(cl->cl_q))
+ priq_purgeq(cl);
+ splx(s);
+#ifdef ALTQ_RIO
+ if (q_is_rio(cl->cl_q))
+ rio_destroy((rio_t *)cl->cl_red);
+#endif
+#ifdef ALTQ_RED
+ if (q_is_red(cl->cl_q))
+ red_destroy(cl->cl_red);
+#endif
+ } else {
+ MALLOC(cl, struct priq_class *, sizeof(struct priq_class),
+ M_DEVBUF, M_WAITOK);
+ if (cl == NULL)
+ return (NULL);
+ bzero(cl, sizeof(struct priq_class));
+
+ MALLOC(cl->cl_q, class_queue_t *, sizeof(class_queue_t),
+ M_DEVBUF, M_WAITOK);
+ if (cl->cl_q == NULL)
+ goto err_ret;
+ bzero(cl->cl_q, sizeof(class_queue_t));
+ }
+
+ pif->pif_classes[pri] = cl;
+ if (flags & PRCF_DEFAULTCLASS)
+ pif->pif_default = cl;
+ if (qlimit == 0)
+ qlimit = 50; /* use default */
+ qlimit(cl->cl_q) = qlimit;
+ qtype(cl->cl_q) = Q_DROPTAIL;
+ qlen(cl->cl_q) = 0;
+ cl->cl_flags = flags;
+ cl->cl_pri = pri;
+ if (pri > pif->pif_maxpri)
+ pif->pif_maxpri = pri;
+ cl->cl_pif = pif;
+ cl->cl_handle = qid;
+
+#ifdef ALTQ_RED
+ if (flags & (PRCF_RED|PRCF_RIO)) {
+ int red_flags, red_pkttime;
+
+ red_flags = 0;
+ if (flags & PRCF_ECN)
+ red_flags |= REDF_ECN;
+#ifdef ALTQ_RIO
+ if (flags & PRCF_CLEARDSCP)
+ red_flags |= RIOF_CLEARDSCP;
+#endif
+ if (pif->pif_bandwidth < 8)
+ red_pkttime = 1000 * 1000 * 1000; /* 1 sec */
+ else
+ red_pkttime = (int64_t)pif->pif_ifq->altq_ifp->if_mtu
+ * 1000 * 1000 * 1000 / (pif->pif_bandwidth / 8);
+#ifdef ALTQ_RIO
+ if (flags & PRCF_RIO) {
+ cl->cl_red = (red_t *)rio_alloc(0, NULL,
+ red_flags, red_pkttime);
+ if (cl->cl_red != NULL)
+ qtype(cl->cl_q) = Q_RIO;
+ } else
+#endif
+ if (flags & PRCF_RED) {
+ cl->cl_red = red_alloc(0, 0,
+ qlimit(cl->cl_q) * 10/100,
+ qlimit(cl->cl_q) * 30/100,
+ red_flags, red_pkttime);
+ if (cl->cl_red != NULL)
+ qtype(cl->cl_q) = Q_RED;
+ }
+ }
+#endif /* ALTQ_RED */
+
+ return (cl);
+
+ err_ret:
+ if (cl->cl_red != NULL) {
+#ifdef ALTQ_RIO
+ if (q_is_rio(cl->cl_q))
+ rio_destroy((rio_t *)cl->cl_red);
+#endif
+#ifdef ALTQ_RED
+ if (q_is_red(cl->cl_q))
+ red_destroy(cl->cl_red);
+#endif
+ }
+ if (cl->cl_q != NULL)
+ FREE(cl->cl_q, M_DEVBUF);
+ FREE(cl, M_DEVBUF);
+ return (NULL);
+}
+
+static int
+priq_class_destroy(struct priq_class *cl)
+{
+ struct priq_if *pif;
+ int s, pri;
+
+#ifdef __NetBSD__
+ s = splnet();
+#else
+ s = splimp();
+#endif
+
+#ifdef ALTQ3_CLFIER_COMPAT
+ /* delete filters referencing to this class */
+ acc_discard_filters(&cl->cl_pif->pif_classifier, cl, 0);
+#endif
+
+ if (!qempty(cl->cl_q))
+ priq_purgeq(cl);
+
+ pif = cl->cl_pif;
+ pif->pif_classes[cl->cl_pri] = NULL;
+ if (pif->pif_maxpri == cl->cl_pri) {
+ for (pri = cl->cl_pri; pri >= 0; pri--)
+ if (pif->pif_classes[pri] != NULL) {
+ pif->pif_maxpri = pri;
+ break;
+ }
+ if (pri < 0)
+ pif->pif_maxpri = -1;
+ }
+ splx(s);
+
+ if (cl->cl_red != NULL) {
+#ifdef ALTQ_RIO
+ if (q_is_rio(cl->cl_q))
+ rio_destroy((rio_t *)cl->cl_red);
+#endif
+#ifdef ALTQ_RED
+ if (q_is_red(cl->cl_q))
+ red_destroy(cl->cl_red);
+#endif
+ }
+ FREE(cl->cl_q, M_DEVBUF);
+ FREE(cl, M_DEVBUF);
+ return (0);
+}
+
+/*
+ * priq_enqueue is an enqueue function to be registered to
+ * (*altq_enqueue) in struct ifaltq.
+ */
+static int
+priq_enqueue(struct ifaltq *ifq, struct mbuf *m, struct altq_pktattr *pktattr)
+{
+ struct priq_if *pif = (struct priq_if *)ifq->altq_disc;
+ struct priq_class *cl;
+ struct m_tag *t;
+ int len;
+
+ /* grab class set by classifier */
+ if ((m->m_flags & M_PKTHDR) == 0) {
+ /* should not happen */
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+ printf("altq: packet for %s does not have pkthdr\n",
+ ifq->altq_ifp->if_xname);
+#else
+ printf("altq: packet for %s%d does not have pkthdr\n",
+ ifq->altq_ifp->if_name, ifq->altq_ifp->if_unit);
+#endif
+ m_freem(m);
+ return (ENOBUFS);
+ }
+ cl = NULL;
+ if ((t = m_tag_find(m, PACKET_TAG_PF_QID, NULL)) != NULL)
+ cl = clh_to_clp(pif, ((struct altq_tag *)(t+1))->qid);
+#ifdef ALTQ3_COMPAT
+ else if ((ifq->altq_flags & ALTQF_CLASSIFY) && pktattr != NULL)
+ cl = pktattr->pattr_class;
+#endif
+ if (cl == NULL) {
+ cl = pif->pif_default;
+ if (cl == NULL) {
+ m_freem(m);
+ return (ENOBUFS);
+ }
+ }
+#ifdef ALTQ3_COMPAT
+ if (pktattr != NULL)
+ cl->cl_pktattr = pktattr; /* save proto hdr used by ECN */
+ else
+#endif
+ cl->cl_pktattr = NULL;
+ len = m_pktlen(m);
+ if (priq_addq(cl, m) != 0) {
+ /* drop occurred. mbuf was freed in priq_addq. */
+ PKTCNTR_ADD(&cl->cl_dropcnt, len);
+ return (ENOBUFS);
+ }
+ IFQ_INC_LEN(ifq);
+
+ /* successfully queued. */
+ return (0);
+}
+
+/*
+ * priq_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 *
+priq_dequeue(struct ifaltq *ifq, int op)
+{
+ struct priq_if *pif = (struct priq_if *)ifq->altq_disc;
+ struct priq_class *cl;
+ struct mbuf *m;
+ int pri;
+
+ if (IFQ_IS_EMPTY(ifq))
+ /* no packet in the queue */
+ return (NULL);
+
+ for (pri = pif->pif_maxpri; pri >= 0; pri--) {
+ if ((cl = pif->pif_classes[pri]) != NULL &&
+ !qempty(cl->cl_q)) {
+ if (op == ALTDQ_POLL)
+ return (priq_pollq(cl));
+
+ m = priq_getq(cl);
+ if (m != NULL) {
+ IFQ_DEC_LEN(ifq);
+ if (qempty(cl->cl_q))
+ cl->cl_period++;
+ PKTCNTR_ADD(&cl->cl_xmitcnt, m_pktlen(m));
+ }
+ return (m);
+ }
+ }
+ return (NULL);
+}
+
+static int
+priq_addq(struct priq_class *cl, struct mbuf *m)
+{
+
+#ifdef ALTQ_RIO
+ if (q_is_rio(cl->cl_q))
+ return rio_addq((rio_t *)cl->cl_red, cl->cl_q, m,
+ cl->cl_pktattr);
+#endif
+#ifdef ALTQ_RED
+ if (q_is_red(cl->cl_q))
+ return red_addq(cl->cl_red, cl->cl_q, m, cl->cl_pktattr);
+#endif
+ if (qlen(cl->cl_q) >= qlimit(cl->cl_q)) {
+ m_freem(m);
+ return (-1);
+ }
+
+ if (cl->cl_flags & PRCF_CLEARDSCP)
+ write_dsfield(m, cl->cl_pktattr, 0);
+
+ _addq(cl->cl_q, m);
+
+ return (0);
+}
+
+static struct mbuf *
+priq_getq(struct priq_class *cl)
+{
+#ifdef ALTQ_RIO
+ if (q_is_rio(cl->cl_q))
+ return rio_getq((rio_t *)cl->cl_red, cl->cl_q);
+#endif
+#ifdef ALTQ_RED
+ if (q_is_red(cl->cl_q))
+ return red_getq(cl->cl_red, cl->cl_q);
+#endif
+ return _getq(cl->cl_q);
+}
+
+static struct mbuf *
+priq_pollq(cl)
+ struct priq_class *cl;
+{
+ return qhead(cl->cl_q);
+}
+
+static void
+priq_purgeq(struct priq_class *cl)
+{
+ struct mbuf *m;
+
+ if (qempty(cl->cl_q))
+ return;
+
+ while ((m = _getq(cl->cl_q)) != NULL) {
+ PKTCNTR_ADD(&cl->cl_dropcnt, m_pktlen(m));
+ m_freem(m);
+ }
+ ASSERT(qlen(cl->cl_q) == 0);
+}
+
+static void
+get_class_stats(struct priq_classstats *sp, struct priq_class *cl)
+{
+ sp->class_handle = cl->cl_handle;
+ sp->qlength = qlen(cl->cl_q);
+ sp->qlimit = qlimit(cl->cl_q);
+ sp->period = cl->cl_period;
+ sp->xmitcnt = cl->cl_xmitcnt;
+ sp->dropcnt = cl->cl_dropcnt;
+
+ sp->qtype = qtype(cl->cl_q);
+#ifdef ALTQ_RED
+ if (q_is_red(cl->cl_q))
+ red_getstats(cl->cl_red, &sp->red[0]);
+#endif
+#ifdef ALTQ_RIO
+ if (q_is_rio(cl->cl_q))
+ rio_getstats((rio_t *)cl->cl_red, &sp->red[0]);
+#endif
+
+}
+
+/* convert a class handle to the corresponding class pointer */
+static struct priq_class *
+clh_to_clp(struct priq_if *pif, u_int32_t chandle)
+{
+ struct priq_class *cl;
+ int idx;
+
+ if (chandle == 0)
+ return (NULL);
+
+ for (idx = pif->pif_maxpri; idx >= 0; idx--)
+ if ((cl = pif->pif_classes[idx]) != NULL &&
+ cl->cl_handle == chandle)
+ return (cl);
+
+ return (NULL);
+}
+
+
+#ifdef ALTQ3_COMPAT
+
+static struct priq_if *
+priq_attach(ifq, bandwidth)
+ struct ifaltq *ifq;
+ u_int bandwidth;
+{
+ struct priq_if *pif;
+
+ MALLOC(pif, struct priq_if *, sizeof(struct priq_if),
+ M_DEVBUF, M_WAITOK);
+ if (pif == NULL)
+ return (NULL);
+ bzero(pif, sizeof(struct priq_if));
+ pif->pif_bandwidth = bandwidth;
+ pif->pif_maxpri = -1;
+ pif->pif_ifq = ifq;
+
+ /* add this state to the priq list */
+ pif->pif_next = pif_list;
+ pif_list = pif;
+
+ return (pif);
+}
+
+static int
+priq_detach(pif)
+ struct priq_if *pif;
+{
+ (void)priq_clear_interface(pif);
+
+ /* remove this interface from the pif list */
+ if (pif_list == pif)
+ pif_list = pif->pif_next;
+ else {
+ struct priq_if *p;
+
+ for (p = pif_list; p != NULL; p = p->pif_next)
+ if (p->pif_next == pif) {
+ p->pif_next = pif->pif_next;
+ break;
+ }
+ ASSERT(p != NULL);
+ }
+
+ FREE(pif, M_DEVBUF);
+ return (0);
+}
+
+/*
+ * priq device interface
+ */
+int
+priqopen(dev, flag, fmt, p)
+ dev_t dev;
+ int flag, fmt;
+#if (__FreeBSD_version > 500000)
+ struct thread *p;
+#else
+ struct proc *p;
+#endif
+{
+ /* everything will be done when the queueing scheme is attached. */
+ return 0;
+}
+
+int
+priqclose(dev, flag, fmt, p)
+ dev_t dev;
+ int flag, fmt;
+#if (__FreeBSD_version > 500000)
+ struct thread *p;
+#else
+ struct proc *p;
+#endif
+{
+ struct priq_if *pif;
+ int err, error = 0;
+
+ while ((pif = pif_list) != NULL) {
+ /* destroy all */
+ if (ALTQ_IS_ENABLED(pif->pif_ifq))
+ altq_disable(pif->pif_ifq);
+
+ err = altq_detach(pif->pif_ifq);
+ if (err == 0)
+ err = priq_detach(pif);
+ if (err != 0 && error == 0)
+ error = err;
+ }
+
+ return error;
+}
+
+int
+priqioctl(dev, cmd, addr, flag, p)
+ dev_t dev;
+ ioctlcmd_t cmd;
+ caddr_t addr;
+ int flag;
+#if (__FreeBSD_version > 500000)
+ struct thread *p;
+#else
+ struct proc *p;
+#endif
+{
+ struct priq_if *pif;
+ struct priq_interface *ifacep;
+ int error = 0;
+
+ /* check super-user privilege */
+ switch (cmd) {
+ case PRIQ_GETSTATS:
+ break;
+ default:
+#if (__FreeBSD_version > 400000)
+ if ((error = suser(p)) != 0)
+ return (error);
+#else
+ if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
+ return (error);
+#endif
+ break;
+ }
+
+ switch (cmd) {
+
+ case PRIQ_IF_ATTACH:
+ error = priqcmd_if_attach((struct priq_interface *)addr);
+ break;
+
+ case PRIQ_IF_DETACH:
+ error = priqcmd_if_detach((struct priq_interface *)addr);
+ break;
+
+ case PRIQ_ENABLE:
+ case PRIQ_DISABLE:
+ case PRIQ_CLEAR:
+ ifacep = (struct priq_interface *)addr;
+ if ((pif = altq_lookup(ifacep->ifname,
+ ALTQT_PRIQ)) == NULL) {
+ error = EBADF;
+ break;
+ }
+
+ switch (cmd) {
+ case PRIQ_ENABLE:
+ if (pif->pif_default == NULL) {
+#ifdef ALTQ_DEBUG
+ printf("priq: no default class\n");
+#endif
+ error = EINVAL;
+ break;
+ }
+ error = altq_enable(pif->pif_ifq);
+ break;
+
+ case PRIQ_DISABLE:
+ error = altq_disable(pif->pif_ifq);
+ break;
+
+ case PRIQ_CLEAR:
+ priq_clear_interface(pif);
+ break;
+ }
+ break;
+
+ case PRIQ_ADD_CLASS:
+ error = priqcmd_add_class((struct priq_add_class *)addr);
+ break;
+
+ case PRIQ_DEL_CLASS:
+ error = priqcmd_delete_class((struct priq_delete_class *)addr);
+ break;
+
+ case PRIQ_MOD_CLASS:
+ error = priqcmd_modify_class((struct priq_modify_class *)addr);
+ break;
+
+ case PRIQ_ADD_FILTER:
+ error = priqcmd_add_filter((struct priq_add_filter *)addr);
+ break;
+
+ case PRIQ_DEL_FILTER:
+ error = priqcmd_delete_filter((struct priq_delete_filter *)addr);
+ break;
+
+ case PRIQ_GETSTATS:
+ error = priqcmd_class_stats((struct priq_class_stats *)addr);
+ break;
+
+ default:
+ error = EINVAL;
+ break;
+ }
+ return error;
+}
+
+static int
+priqcmd_if_attach(ap)
+ struct priq_interface *ap;
+{
+ struct priq_if *pif;
+ struct ifnet *ifp;
+ int error;
+
+ if ((ifp = ifunit(ap->ifname)) == NULL)
+ return (ENXIO);
+
+ if ((pif = priq_attach(&ifp->if_snd, ap->arg)) == NULL)
+ return (ENOMEM);
+
+ /*
+ * set PRIQ to this ifnet structure.
+ */
+ if ((error = altq_attach(&ifp->if_snd, ALTQT_PRIQ, pif,
+ priq_enqueue, priq_dequeue, priq_request,
+ &pif->pif_classifier, acc_classify)) != 0)
+ (void)priq_detach(pif);
+
+ return (error);
+}
+
+static int
+priqcmd_if_detach(ap)
+ struct priq_interface *ap;
+{
+ struct priq_if *pif;
+ int error;
+
+ if ((pif = altq_lookup(ap->ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ if (ALTQ_IS_ENABLED(pif->pif_ifq))
+ altq_disable(pif->pif_ifq);
+
+ if ((error = altq_detach(pif->pif_ifq)))
+ return (error);
+
+ return priq_detach(pif);
+}
+
+static int
+priqcmd_add_class(ap)
+ struct priq_add_class *ap;
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+ int qid;
+
+ if ((pif = altq_lookup(ap->iface.ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ if (ap->pri < 0 || ap->pri >= PRIQ_MAXPRI)
+ return (EINVAL);
+ if (pif->pif_classes[ap->pri] != NULL)
+ return (EBUSY);
+
+ qid = ap->pri + 1;
+ if ((cl = priq_class_create(pif, ap->pri,
+ ap->qlimit, ap->flags, qid)) == NULL)
+ return (ENOMEM);
+
+ /* return a class handle to the user */
+ ap->class_handle = cl->cl_handle;
+
+ return (0);
+}
+
+static int
+priqcmd_delete_class(ap)
+ struct priq_delete_class *ap;
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+
+ if ((pif = altq_lookup(ap->iface.ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ if ((cl = clh_to_clp(pif, ap->class_handle)) == NULL)
+ return (EINVAL);
+
+ return priq_class_destroy(cl);
+}
+
+static int
+priqcmd_modify_class(ap)
+ struct priq_modify_class *ap;
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+
+ if ((pif = altq_lookup(ap->iface.ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ if (ap->pri < 0 || ap->pri >= PRIQ_MAXPRI)
+ return (EINVAL);
+
+ if ((cl = clh_to_clp(pif, ap->class_handle)) == NULL)
+ return (EINVAL);
+
+ /*
+ * if priority is changed, move the class to the new priority
+ */
+ if (pif->pif_classes[ap->pri] != cl) {
+ if (pif->pif_classes[ap->pri] != NULL)
+ return (EEXIST);
+ pif->pif_classes[cl->cl_pri] = NULL;
+ pif->pif_classes[ap->pri] = cl;
+ cl->cl_pri = ap->pri;
+ }
+
+ /* call priq_class_create to change class parameters */
+ if ((cl = priq_class_create(pif, ap->pri,
+ ap->qlimit, ap->flags, ap->class_handle)) == NULL)
+ return (ENOMEM);
+ return 0;
+}
+
+static int
+priqcmd_add_filter(ap)
+ struct priq_add_filter *ap;
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+
+ if ((pif = altq_lookup(ap->iface.ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ if ((cl = clh_to_clp(pif, ap->class_handle)) == NULL)
+ return (EINVAL);
+
+ return acc_add_filter(&pif->pif_classifier, &ap->filter,
+ cl, &ap->filter_handle);
+}
+
+static int
+priqcmd_delete_filter(ap)
+ struct priq_delete_filter *ap;
+{
+ struct priq_if *pif;
+
+ if ((pif = altq_lookup(ap->iface.ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ return acc_delete_filter(&pif->pif_classifier,
+ ap->filter_handle);
+}
+
+static int
+priqcmd_class_stats(ap)
+ struct priq_class_stats *ap;
+{
+ struct priq_if *pif;
+ struct priq_class *cl;
+ struct priq_classstats stats, *usp;
+ int pri, error;
+
+ if ((pif = altq_lookup(ap->iface.ifname, ALTQT_PRIQ)) == NULL)
+ return (EBADF);
+
+ ap->maxpri = pif->pif_maxpri;
+
+ /* then, read the next N classes in the tree */
+ usp = ap->stats;
+ for (pri = 0; pri <= pif->pif_maxpri; pri++) {
+ cl = pif->pif_classes[pri];
+ if (cl != NULL)
+ get_class_stats(&stats, cl);
+ else
+ bzero(&stats, sizeof(stats));
+ if ((error = copyout((caddr_t)&stats, (caddr_t)usp++,
+ sizeof(stats))) != 0)
+ return (error);
+ }
+ return (0);
+}
+
+#ifdef KLD_MODULE
+
+static struct altqsw priq_sw =
+ {"priq", priqopen, priqclose, priqioctl};
+
+ALTQ_MODULE(altq_priq, ALTQT_PRIQ, &priq_sw);
+MODULE_DEPEND(altq_priq, altq_red, 1, 1, 1);
+MODULE_DEPEND(altq_priq, altq_rio, 1, 1, 1);
+
+#endif /* KLD_MODULE */
+
+#endif /* ALTQ3_COMPAT */
+#endif /* ALTQ_PRIQ */