2 /* $KAME: altq_cbq.c,v 1.19 2003/09/17 14:23:25 kjc Exp $ */
5 * Copyright (c) Sun Microsystems, Inc. 1993-1998 All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the SMCC Technology
21 * Development Group at Sun Microsystems, Inc.
23 * 4. The name of the Sun Microsystems, Inc nor may not be used to endorse or
24 * promote products derived from this software without specific prior
27 * SUN MICROSYSTEMS DOES NOT CLAIM MERCHANTABILITY OF THIS SOFTWARE OR THE
28 * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE. The software is
29 * provided "as is" without express or implied warranty of any kind.
31 * These notices must be retained in any copies of any part of this software.
34 #if defined(__FreeBSD__) || defined(__NetBSD__)
36 #if (__FreeBSD__ != 2)
39 #include "opt_inet6.h"
42 #endif /* __FreeBSD__ || __NetBSD__ */
43 #ifdef ALTQ_CBQ /* cbq is enabled by ALTQ_CBQ option in opt_altq.h */
45 #include <sys/param.h>
46 #include <sys/malloc.h>
48 #include <sys/socket.h>
49 #include <sys/systm.h>
51 #include <sys/errno.h>
55 #include <sys/kernel.h>
59 #include <netinet/in.h>
61 #include <net/pfvar.h>
62 #include <altq/altq.h>
63 #include <altq/altq_cbq.h>
65 #include <altq/altq_conf.h>
70 * Local Data structures.
72 static cbq_state_t *cbq_list = NULL;
76 * Forward Declarations.
78 static int cbq_class_destroy(cbq_state_t *, struct rm_class *);
79 static struct rm_class *clh_to_clp(cbq_state_t *, u_int32_t);
80 static int cbq_clear_interface(cbq_state_t *);
81 static int cbq_request(struct ifaltq *, int, void *);
82 static int cbq_enqueue(struct ifaltq *, struct mbuf *,
83 struct altq_pktattr *);
84 static struct mbuf *cbq_dequeue(struct ifaltq *, int);
85 static void cbqrestart(struct ifaltq *);
86 static void get_class_stats(class_stats_t *, struct rm_class *);
87 static void cbq_purge(cbq_state_t *);
89 static int cbq_add_class(struct cbq_add_class *);
90 static int cbq_delete_class(struct cbq_delete_class *);
91 static int cbq_modify_class(struct cbq_modify_class *);
92 static int cbq_class_create(cbq_state_t *, struct cbq_add_class *,
93 struct rm_class *, struct rm_class *);
94 static int cbq_clear_hierarchy(struct cbq_interface *);
95 static int cbq_set_enable(struct cbq_interface *, int);
96 static int cbq_ifattach(struct cbq_interface *);
97 static int cbq_ifdetach(struct cbq_interface *);
98 static int cbq_getstats(struct cbq_getstats *);
100 static int cbq_add_filter(struct cbq_add_filter *);
101 static int cbq_delete_filter(struct cbq_delete_filter *);
102 #endif /* ALTQ3_COMPAT */
106 * cbq_class_destroy(cbq_mod_state_t *, struct rm_class *) - This
107 * function destroys a given traffic class. Before destroying
108 * the class, all traffic for that class is released.
111 cbq_class_destroy(cbq_state_t *cbqp, struct rm_class *cl)
115 /* delete the class */
116 rmc_delete_class(&cbqp->ifnp, cl);
119 * free the class handle
121 for (i = 0; i < CBQ_MAX_CLASSES; i++)
122 if (cbqp->cbq_class_tbl[i] == cl)
123 cbqp->cbq_class_tbl[i] = NULL;
125 if (cl == cbqp->ifnp.root_)
126 cbqp->ifnp.root_ = NULL;
127 if (cl == cbqp->ifnp.default_)
128 cbqp->ifnp.default_ = NULL;
130 if (cl == cbqp->ifnp.ctl_)
131 cbqp->ifnp.ctl_ = NULL;
136 /* convert class handle to class pointer */
137 static struct rm_class *
138 clh_to_clp(cbq_state_t *cbqp, u_int32_t chandle)
146 * first, try optimistically the slot matching the lower bits of
147 * the handle. if it fails, do the linear table search.
149 i = chandle % CBQ_MAX_CLASSES;
150 if ((cl = cbqp->cbq_class_tbl[i]) != NULL &&
151 cl->stats_.handle == chandle)
153 for (i = 0; i < CBQ_MAX_CLASSES; i++)
154 if ((cl = cbqp->cbq_class_tbl[i]) != NULL &&
155 cl->stats_.handle == chandle)
161 cbq_clear_interface(cbq_state_t *cbqp)
166 #ifdef ALTQ3_CLFIER_COMPAT
167 /* free the filters for this interface */
168 acc_discard_filters(&cbqp->cbq_classifier, NULL, 1);
171 /* clear out the classes now */
174 for (i = 0; i < CBQ_MAX_CLASSES; i++) {
175 if ((cl = cbqp->cbq_class_tbl[i]) != NULL) {
176 if (is_a_parent_class(cl))
179 cbq_class_destroy(cbqp, cl);
180 cbqp->cbq_class_tbl[i] = NULL;
181 if (cl == cbqp->ifnp.root_)
182 cbqp->ifnp.root_ = NULL;
183 if (cl == cbqp->ifnp.default_)
184 cbqp->ifnp.default_ = NULL;
186 if (cl == cbqp->ifnp.ctl_)
187 cbqp->ifnp.ctl_ = NULL;
198 cbq_request(struct ifaltq *ifq, int req, void *arg)
200 cbq_state_t *cbqp = (cbq_state_t *)ifq->altq_disc;
202 IFQ_LOCK_ASSERT(ifq);
212 /* copy the stats info in rm_class to class_states_t */
214 get_class_stats(class_stats_t *statsp, struct rm_class *cl)
216 statsp->xmit_cnt = cl->stats_.xmit_cnt;
217 statsp->drop_cnt = cl->stats_.drop_cnt;
218 statsp->over = cl->stats_.over;
219 statsp->borrows = cl->stats_.borrows;
220 statsp->overactions = cl->stats_.overactions;
221 statsp->delays = cl->stats_.delays;
223 statsp->depth = cl->depth_;
224 statsp->priority = cl->pri_;
225 statsp->maxidle = cl->maxidle_;
226 statsp->minidle = cl->minidle_;
227 statsp->offtime = cl->offtime_;
228 statsp->qmax = qlimit(cl->q_);
229 statsp->ns_per_byte = cl->ns_per_byte_;
230 statsp->wrr_allot = cl->w_allotment_;
231 statsp->qcnt = qlen(cl->q_);
232 statsp->avgidle = cl->avgidle_;
234 statsp->qtype = qtype(cl->q_);
236 if (q_is_red(cl->q_))
237 red_getstats(cl->red_, &statsp->red[0]);
240 if (q_is_rio(cl->q_))
241 rio_getstats((rio_t *)cl->red_, &statsp->red[0]);
246 cbq_pfattach(struct pf_altq *a)
251 if ((ifp = ifunit(a->ifname)) == NULL || a->altq_disc == NULL)
258 error = altq_attach(&ifp->if_snd, ALTQT_CBQ, a->altq_disc,
259 cbq_enqueue, cbq_dequeue, cbq_request, NULL, NULL);
265 cbq_add_altq(struct pf_altq *a)
270 if ((ifp = ifunit(a->ifname)) == NULL)
272 if (!ALTQ_IS_READY(&ifp->if_snd))
275 /* allocate and initialize cbq_state_t */
276 cbqp = malloc(sizeof(cbq_state_t), M_DEVBUF, M_WAITOK);
279 bzero(cbqp, sizeof(cbq_state_t));
280 CALLOUT_INIT(&cbqp->cbq_callout);
282 cbqp->ifnp.ifq_ = &ifp->if_snd; /* keep the ifq */
284 /* keep the state in pf_altq */
291 cbq_remove_altq(struct pf_altq *a)
295 if ((cbqp = a->altq_disc) == NULL)
299 cbq_clear_interface(cbqp);
301 if (cbqp->ifnp.default_)
302 cbq_class_destroy(cbqp, cbqp->ifnp.default_);
303 if (cbqp->ifnp.root_)
304 cbq_class_destroy(cbqp, cbqp->ifnp.root_);
306 /* deallocate cbq_state_t */
307 free(cbqp, M_DEVBUF);
313 cbq_add_queue(struct pf_altq *a)
315 struct rm_class *borrow, *parent;
318 struct cbq_opts *opts;
321 if ((cbqp = a->altq_disc) == NULL)
327 * find a free slot in the class table. if the slot matching
328 * the lower bits of qid is free, use this slot. otherwise,
329 * use the first free slot.
331 i = a->qid % CBQ_MAX_CLASSES;
332 if (cbqp->cbq_class_tbl[i] != NULL) {
333 for (i = 0; i < CBQ_MAX_CLASSES; i++)
334 if (cbqp->cbq_class_tbl[i] == NULL)
336 if (i == CBQ_MAX_CLASSES)
340 opts = &a->pq_u.cbq_opts;
341 /* check parameters */
342 if (a->priority >= CBQ_MAXPRI)
345 /* Get pointers to parent and borrow classes. */
346 parent = clh_to_clp(cbqp, a->parent_qid);
347 if (opts->flags & CBQCLF_BORROW)
353 * A class must borrow from it's parent or it can not
354 * borrow at all. Hence, borrow can be null.
356 if (parent == NULL && (opts->flags & CBQCLF_ROOTCLASS) == 0) {
357 printf("cbq_add_queue: no parent class!\n");
361 if ((borrow != parent) && (borrow != NULL)) {
362 printf("cbq_add_class: borrow class != parent\n");
369 switch (opts->flags & CBQCLF_CLASSMASK) {
370 case CBQCLF_ROOTCLASS:
373 if (cbqp->ifnp.root_)
376 case CBQCLF_DEFCLASS:
377 if (cbqp->ifnp.default_)
385 /* more than two flags bits set */
390 * create a class. if this is a root class, initialize the
393 if ((opts->flags & CBQCLF_CLASSMASK) == CBQCLF_ROOTCLASS) {
394 rmc_init(cbqp->ifnp.ifq_, &cbqp->ifnp, opts->ns_per_byte,
395 cbqrestart, a->qlimit, RM_MAXQUEUED,
396 opts->maxidle, opts->minidle, opts->offtime,
398 cl = cbqp->ifnp.root_;
400 cl = rmc_newclass(a->priority,
401 &cbqp->ifnp, opts->ns_per_byte,
402 rmc_delay_action, a->qlimit, parent, borrow,
403 opts->maxidle, opts->minidle, opts->offtime,
404 opts->pktsize, opts->flags);
409 /* return handle to user space. */
410 cl->stats_.handle = a->qid;
411 cl->stats_.depth = cl->depth_;
413 /* save the allocated class */
414 cbqp->cbq_class_tbl[i] = cl;
416 if ((opts->flags & CBQCLF_CLASSMASK) == CBQCLF_DEFCLASS)
417 cbqp->ifnp.default_ = cl;
423 cbq_remove_queue(struct pf_altq *a)
429 if ((cbqp = a->altq_disc) == NULL)
432 if ((cl = clh_to_clp(cbqp, a->qid)) == NULL)
435 /* if we are a parent class, then return an error. */
436 if (is_a_parent_class(cl))
439 /* delete the class */
440 rmc_delete_class(&cbqp->ifnp, cl);
443 * free the class handle
445 for (i = 0; i < CBQ_MAX_CLASSES; i++)
446 if (cbqp->cbq_class_tbl[i] == cl) {
447 cbqp->cbq_class_tbl[i] = NULL;
448 if (cl == cbqp->ifnp.root_)
449 cbqp->ifnp.root_ = NULL;
450 if (cl == cbqp->ifnp.default_)
451 cbqp->ifnp.default_ = NULL;
459 cbq_getqstats(struct pf_altq *a, void *ubuf, int *nbytes)
466 if ((cbqp = altq_lookup(a->ifname, ALTQT_CBQ)) == NULL)
469 if ((cl = clh_to_clp(cbqp, a->qid)) == NULL)
472 if (*nbytes < sizeof(stats))
475 get_class_stats(&stats, cl);
477 if ((error = copyout((caddr_t)&stats, ubuf, sizeof(stats))) != 0)
479 *nbytes = sizeof(stats);
485 * cbq_enqueue(struct ifaltq *ifq, struct mbuf *m, struct altq_pktattr *pattr)
486 * - Queue data packets.
488 * cbq_enqueue is set to ifp->if_altqenqueue and called by an upper
489 * layer (e.g. ether_output). cbq_enqueue queues the given packet
490 * to the cbq, then invokes the driver's start routine.
492 * Assumptions: called in splimp
493 * Returns: 0 if the queueing is successful.
494 * ENOBUFS if a packet dropping occurred as a result of
499 cbq_enqueue(struct ifaltq *ifq, struct mbuf *m, struct altq_pktattr *pktattr)
501 cbq_state_t *cbqp = (cbq_state_t *)ifq->altq_disc;
506 IFQ_LOCK_ASSERT(ifq);
508 /* grab class set by classifier */
509 if ((m->m_flags & M_PKTHDR) == 0) {
510 /* should not happen */
511 #if defined(__NetBSD__) || defined(__OpenBSD__)\
512 || (defined(__FreeBSD__) && __FreeBSD_version >= 501113)
513 printf("altq: packet for %s does not have pkthdr\n",
514 ifq->altq_ifp->if_xname);
516 printf("altq: packet for %s%d does not have pkthdr\n",
517 ifq->altq_ifp->if_name, ifq->altq_ifp->if_unit);
523 if ((t = pf_find_mtag(m)) != NULL)
524 cl = clh_to_clp(cbqp, t->qid);
526 else if ((ifq->altq_flags & ALTQF_CLASSIFY) && pktattr != NULL)
527 cl = pktattr->pattr_class;
530 cl = cbqp->ifnp.default_;
538 cl->pktattr_ = pktattr; /* save proto hdr used by ECN */
543 if (rmc_queue_packet(cl, m) != 0) {
544 /* drop occurred. some mbuf was freed in rmc_queue_packet. */
545 PKTCNTR_ADD(&cl->stats_.drop_cnt, len);
549 /* successfully queued. */
556 cbq_dequeue(struct ifaltq *ifq, int op)
558 cbq_state_t *cbqp = (cbq_state_t *)ifq->altq_disc;
561 IFQ_LOCK_ASSERT(ifq);
563 m = rmc_dequeue_next(&cbqp->ifnp, op);
565 if (m && op == ALTDQ_REMOVE) {
566 --cbqp->cbq_qlen; /* decrement # of packets in cbq */
569 /* Update the class. */
570 rmc_update_class_util(&cbqp->ifnp);
577 * cbqrestart(queue_t *) - Restart sending of data.
578 * called from rmc_restart in splimp via timeout after waking up
584 cbqrestart(struct ifaltq *ifq)
589 IFQ_LOCK_ASSERT(ifq);
591 if (!ALTQ_IS_ENABLED(ifq))
592 /* cbq must have been detached */
595 if ((cbqp = (cbq_state_t *)ifq->altq_disc) == NULL)
596 /* should not happen */
601 cbqp->cbq_qlen > 0 && (ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0) {
603 (*ifp->if_start)(ifp);
608 static void cbq_purge(cbq_state_t *cbqp)
613 for (i = 0; i < CBQ_MAX_CLASSES; i++)
614 if ((cl = cbqp->cbq_class_tbl[i]) != NULL)
616 if (ALTQ_IS_ENABLED(cbqp->ifnp.ifq_))
617 cbqp->ifnp.ifq_->ifq_len = 0;
623 struct cbq_add_class *acp;
626 struct rm_class *borrow, *parent;
629 ifacename = acp->cbq_iface.cbq_ifacename;
630 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
633 /* check parameters */
634 if (acp->cbq_class.priority >= CBQ_MAXPRI ||
635 acp->cbq_class.maxq > CBQ_MAXQSIZE)
638 /* Get pointers to parent and borrow classes. */
639 parent = clh_to_clp(cbqp, acp->cbq_class.parent_class_handle);
640 borrow = clh_to_clp(cbqp, acp->cbq_class.borrow_class_handle);
643 * A class must borrow from it's parent or it can not
644 * borrow at all. Hence, borrow can be null.
646 if (parent == NULL && (acp->cbq_class.flags & CBQCLF_ROOTCLASS) == 0) {
647 printf("cbq_add_class: no parent class!\n");
651 if ((borrow != parent) && (borrow != NULL)) {
652 printf("cbq_add_class: borrow class != parent\n");
656 return cbq_class_create(cbqp, acp, parent, borrow);
660 cbq_delete_class(dcp)
661 struct cbq_delete_class *dcp;
667 ifacename = dcp->cbq_iface.cbq_ifacename;
668 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
671 if ((cl = clh_to_clp(cbqp, dcp->cbq_class_handle)) == NULL)
674 /* if we are a parent class, then return an error. */
675 if (is_a_parent_class(cl))
678 /* if a filter has a reference to this class delete the filter */
679 acc_discard_filters(&cbqp->cbq_classifier, cl, 0);
681 return cbq_class_destroy(cbqp, cl);
685 cbq_modify_class(acp)
686 struct cbq_modify_class *acp;
692 ifacename = acp->cbq_iface.cbq_ifacename;
693 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
696 /* Get pointer to this class */
697 if ((cl = clh_to_clp(cbqp, acp->cbq_class_handle)) == NULL)
700 if (rmc_modclass(cl, acp->cbq_class.nano_sec_per_byte,
701 acp->cbq_class.maxq, acp->cbq_class.maxidle,
702 acp->cbq_class.minidle, acp->cbq_class.offtime,
703 acp->cbq_class.pktsize) < 0)
710 * cbq_class_create(cbq_mod_state_t *cbqp, struct cbq_add_class *acp,
711 * struct rm_class *parent, struct rm_class *borrow)
713 * This function create a new traffic class in the CBQ class hierarchy of
714 * given paramters. The class that created is either the root, default,
715 * or a new dynamic class. If CBQ is not initilaized, the the root class
719 cbq_class_create(cbqp, acp, parent, borrow)
721 struct cbq_add_class *acp;
722 struct rm_class *parent, *borrow;
725 cbq_class_spec_t *spec = &acp->cbq_class;
730 * allocate class handle
732 for (i = 1; i < CBQ_MAX_CLASSES; i++)
733 if (cbqp->cbq_class_tbl[i] == NULL)
735 if (i == CBQ_MAX_CLASSES)
737 chandle = i; /* use the slot number as class handle */
740 * create a class. if this is a root class, initialize the
743 if ((spec->flags & CBQCLF_CLASSMASK) == CBQCLF_ROOTCLASS) {
744 rmc_init(cbqp->ifnp.ifq_, &cbqp->ifnp, spec->nano_sec_per_byte,
745 cbqrestart, spec->maxq, RM_MAXQUEUED,
746 spec->maxidle, spec->minidle, spec->offtime,
748 cl = cbqp->ifnp.root_;
750 cl = rmc_newclass(spec->priority,
751 &cbqp->ifnp, spec->nano_sec_per_byte,
752 rmc_delay_action, spec->maxq, parent, borrow,
753 spec->maxidle, spec->minidle, spec->offtime,
754 spec->pktsize, spec->flags);
759 /* return handle to user space. */
760 acp->cbq_class_handle = chandle;
762 cl->stats_.handle = chandle;
763 cl->stats_.depth = cl->depth_;
765 /* save the allocated class */
766 cbqp->cbq_class_tbl[i] = cl;
768 if ((spec->flags & CBQCLF_CLASSMASK) == CBQCLF_DEFCLASS)
769 cbqp->ifnp.default_ = cl;
770 if ((spec->flags & CBQCLF_CLASSMASK) == CBQCLF_CTLCLASS)
771 cbqp->ifnp.ctl_ = cl;
778 struct cbq_add_filter *afp;
784 ifacename = afp->cbq_iface.cbq_ifacename;
785 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
788 /* Get the pointer to class. */
789 if ((cl = clh_to_clp(cbqp, afp->cbq_class_handle)) == NULL)
792 return acc_add_filter(&cbqp->cbq_classifier, &afp->cbq_filter,
793 cl, &afp->cbq_filter_handle);
797 cbq_delete_filter(dfp)
798 struct cbq_delete_filter *dfp;
803 ifacename = dfp->cbq_iface.cbq_ifacename;
804 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
807 return acc_delete_filter(&cbqp->cbq_classifier,
808 dfp->cbq_filter_handle);
812 * cbq_clear_hierarchy deletes all classes and their filters on the
816 cbq_clear_hierarchy(ifacep)
817 struct cbq_interface *ifacep;
822 ifacename = ifacep->cbq_ifacename;
823 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
826 return cbq_clear_interface(cbqp);
831 * cbq_set_enable(struct cbq_enable *ep) - this function processed the
832 * ioctl request to enable class based queueing. It searches the list
833 * of interfaces for the specified interface and then enables CBQ on
836 * Returns: 0, for no error.
837 * EBADF, for specified inteface not found.
841 cbq_set_enable(ep, enable)
842 struct cbq_interface *ep;
849 ifacename = ep->cbq_ifacename;
850 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
855 if (cbqp->ifnp.root_ == NULL || cbqp->ifnp.default_ == NULL ||
856 cbqp->ifnp.ctl_ == NULL) {
857 if (cbqp->ifnp.root_ == NULL)
858 printf("No Root Class for %s\n", ifacename);
859 if (cbqp->ifnp.default_ == NULL)
860 printf("No Default Class for %s\n", ifacename);
861 if (cbqp->ifnp.ctl_ == NULL)
862 printf("No Control Class for %s\n", ifacename);
864 } else if ((error = altq_enable(cbqp->ifnp.ifq_)) == 0) {
870 error = altq_disable(cbqp->ifnp.ifq_);
878 struct cbq_getstats *gsp;
884 class_stats_t stats, *usp;
887 ifacename = gsp->iface.cbq_ifacename;
888 nclasses = gsp->nclasses;
891 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
896 for (n = 0, i = 0; n < nclasses && i < CBQ_MAX_CLASSES; n++, i++) {
897 while ((cl = cbqp->cbq_class_tbl[i]) == NULL)
898 if (++i >= CBQ_MAX_CLASSES)
901 get_class_stats(&stats, cl);
902 stats.handle = cl->stats_.handle;
904 if ((error = copyout((caddr_t)&stats, (caddr_t)usp++,
905 sizeof(stats))) != 0)
916 struct cbq_interface *ifacep;
920 cbq_state_t *new_cbqp;
923 ifacename = ifacep->cbq_ifacename;
924 if ((ifp = ifunit(ifacename)) == NULL)
926 if (!ALTQ_IS_READY(&ifp->if_snd))
929 /* allocate and initialize cbq_state_t */
930 new_cbqp = malloc(sizeof(cbq_state_t), M_DEVBUF, M_WAITOK);
931 if (new_cbqp == NULL)
933 bzero(new_cbqp, sizeof(cbq_state_t));
934 CALLOUT_INIT(&new_cbqp->cbq_callout);
936 new_cbqp->cbq_qlen = 0;
937 new_cbqp->ifnp.ifq_ = &ifp->if_snd; /* keep the ifq */
940 * set CBQ to this ifnet structure.
942 error = altq_attach(&ifp->if_snd, ALTQT_CBQ, new_cbqp,
943 cbq_enqueue, cbq_dequeue, cbq_request,
944 &new_cbqp->cbq_classifier, acc_classify);
946 free(new_cbqp, M_DEVBUF);
950 /* prepend to the list of cbq_state_t's. */
951 new_cbqp->cbq_next = cbq_list;
959 struct cbq_interface *ifacep;
964 ifacename = ifacep->cbq_ifacename;
965 if ((cbqp = altq_lookup(ifacename, ALTQT_CBQ)) == NULL)
968 (void)cbq_set_enable(ifacep, DISABLE);
970 cbq_clear_interface(cbqp);
972 /* remove CBQ from the ifnet structure. */
973 (void)altq_detach(cbqp->ifnp.ifq_);
975 /* remove from the list of cbq_state_t's. */
976 if (cbq_list == cbqp)
977 cbq_list = cbqp->cbq_next;
981 for (cp = cbq_list; cp != NULL; cp = cp->cbq_next)
982 if (cp->cbq_next == cbqp) {
983 cp->cbq_next = cbqp->cbq_next;
989 /* deallocate cbq_state_t */
990 free(cbqp, M_DEVBUF);
996 * cbq device interface
1002 cbqopen(dev, flag, fmt, p)
1005 #if (__FreeBSD_version > 500000)
1015 cbqclose(dev, flag, fmt, p)
1018 #if (__FreeBSD_version > 500000)
1025 struct cbq_interface iface;
1029 ifp = cbq_list->ifnp.ifq_->altq_ifp;
1030 #if defined(__NetBSD__) || defined(__OpenBSD__)\
1031 || (defined(__FreeBSD__) && __FreeBSD_version >= 501113)
1032 sprintf(iface.cbq_ifacename, "%s", ifp->if_xname);
1034 sprintf(iface.cbq_ifacename,
1035 "%s%d", ifp->if_name, ifp->if_unit);
1037 err = cbq_ifdetach(&iface);
1038 if (err != 0 && error == 0)
1046 cbqioctl(dev, cmd, addr, flag, p)
1051 #if (__FreeBSD_version > 500000)
1059 /* check cmd for superuser only */
1062 /* currently only command that an ordinary user can call */
1065 #if (__FreeBSD_version > 700000)
1066 error = priv_check(p, PRIV_ALTQ_MANAGE);
1067 #elsif (__FreeBSD_version > 400000)
1070 error = suser(p->p_ucred, &p->p_acflag);
1080 error = cbq_set_enable((struct cbq_interface *)addr, ENABLE);
1084 error = cbq_set_enable((struct cbq_interface *)addr, DISABLE);
1087 case CBQ_ADD_FILTER:
1088 error = cbq_add_filter((struct cbq_add_filter *)addr);
1091 case CBQ_DEL_FILTER:
1092 error = cbq_delete_filter((struct cbq_delete_filter *)addr);
1096 error = cbq_add_class((struct cbq_add_class *)addr);
1100 error = cbq_delete_class((struct cbq_delete_class *)addr);
1103 case CBQ_MODIFY_CLASS:
1104 error = cbq_modify_class((struct cbq_modify_class *)addr);
1107 case CBQ_CLEAR_HIERARCHY:
1108 error = cbq_clear_hierarchy((struct cbq_interface *)addr);
1112 error = cbq_ifattach((struct cbq_interface *)addr);
1116 error = cbq_ifdetach((struct cbq_interface *)addr);
1120 error = cbq_getstats((struct cbq_getstats *)addr);
1133 static void cbq_class_dump(int);
1135 static void cbq_class_dump(i)
1138 struct rm_class *cl;
1139 rm_class_stats_t *s;
1140 struct _class_queue_ *q;
1142 if (cbq_list == NULL) {
1143 printf("cbq_class_dump: no cbq_state found\n");
1146 cl = cbq_list->cbq_class_tbl[i];
1148 printf("class %d cl=%p\n", i, cl);
1153 printf("pri=%d, depth=%d, maxrate=%d, allotment=%d\n",
1154 cl->pri_, cl->depth_, cl->maxrate_, cl->allotment_);
1155 printf("w_allotment=%d, bytes_alloc=%d, avgidle=%d, maxidle=%d\n",
1156 cl->w_allotment_, cl->bytes_alloc_, cl->avgidle_,
1158 printf("minidle=%d, offtime=%d, sleeping=%d, leaf=%d\n",
1159 cl->minidle_, cl->offtime_, cl->sleeping_, cl->leaf_);
1160 printf("handle=%d, depth=%d, packets=%d, bytes=%d\n",
1161 s->handle, s->depth,
1162 (int)s->xmit_cnt.packets, (int)s->xmit_cnt.bytes);
1163 printf("over=%d\n, borrows=%d, drops=%d, overactions=%d, delays=%d\n",
1164 s->over, s->borrows, (int)s->drop_cnt.packets,
1165 s->overactions, s->delays);
1166 printf("tail=%p, head=%p, qlen=%d, qlim=%d, qthresh=%d,qtype=%d\n",
1167 q->tail_, q->head_, q->qlen_, q->qlim_,
1168 q->qthresh_, q->qtype_);
1175 static struct altqsw cbq_sw =
1176 {"cbq", cbqopen, cbqclose, cbqioctl};
1178 ALTQ_MODULE(altq_cbq, ALTQT_CBQ, &cbq_sw);
1179 MODULE_DEPEND(altq_cbq, altq_red, 1, 1, 1);
1180 MODULE_DEPEND(altq_cbq, altq_rio, 1, 1, 1);
1182 #endif /* KLD_MODULE */
1183 #endif /* ALTQ3_COMPAT */
1185 #endif /* ALTQ_CBQ */