/* $NetBSD: altq_priq.c,v 1.26.4.1 2022/08/03 11:01:51 martin Exp $ */ /* $KAME: altq_priq.c,v 1.13 2005/04/13 03:44:25 suz 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 */ #include __KERNEL_RCSID(0, "$NetBSD: altq_priq.c,v 1.26.4.1 2022/08/03 11:01:51 martin Exp $"); #ifdef _KERNEL_OPT #include "opt_altq.h" #include "opt_inet.h" #include "pf.h" #endif #ifdef ALTQ_PRIQ /* priq is enabled by ALTQ_PRIQ option in opt_altq.h */ #include #include #include #include #include #include #include #include #include #include #include #include #include #if NPF > 0 #include #endif #include #include #include /* * function prototypes */ #ifdef ALTQ3_COMPAT static struct priq_if *priq_attach(struct ifaltq *, u_int); static void 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 *); 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 */ #if NPF > 0 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); s = splnet(); 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); pif = malloc(sizeof(struct priq_if), M_DEVBUF, M_WAITOK|M_ZERO); if (pif == NULL) return (ENOMEM); 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); memset(&stats, 0, sizeof(stats)); get_class_stats(&stats, cl); if ((error = copyout((void *)&stats, ubuf, sizeof(stats))) != 0) return (error); *nbytes = sizeof(stats); return (0); } #endif /* NPF > 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 */ s = splnet(); 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 { cl = malloc(sizeof(struct priq_class), M_DEVBUF, M_WAITOK|M_ZERO); if (cl == NULL) return (NULL); cl->cl_q = malloc(sizeof(class_queue_t), M_DEVBUF, M_WAITOK|M_ZERO); if (cl->cl_q == NULL) { free(cl, M_DEVBUF); return (NULL); } } 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); } static int priq_class_destroy(struct priq_class *cl) { struct priq_if *pif; int s, pri; s = splnet(); #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 */ printf("altq: packet for %s does not have pkthdr\n", ifq->altq_ifp->if_xname); m_freem(m); return (ENOBUFS); } cl = NULL; if ((t = m_tag_find(m, PACKET_TAG_ALTQ_QID)) != NULL) cl = clh_to_clp(pif, ((struct altq_tag *)(t+1))->qid); #ifdef ALTQ3_COMPAT else if (ifq->altq_flags & ALTQF_CLASSIFY) cl = m->m_pkthdr.pattr_class; #endif if (cl == NULL) { cl = pif->pif_default; if (cl == NULL) { m_freem(m); return (ENOBUFS); } } #ifdef ALTQ3_COMPAT if (m->m_pkthdr.pattr_af != AF_UNSPEC) { pktattr.pattr_class = m->m_pkthdr.pattr_class; pktattr.pattr_af = m->m_pkthdr.pattr_af; pktattr.pattr_hdr = m->m_pkthdr.pattr_hdr; 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(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(struct ifaltq *ifq, u_int bandwidth) { struct priq_if *pif; pif = malloc(sizeof(struct priq_if), M_DEVBUF, M_WAITOK|M_ZERO); if (pif == NULL) return (NULL); 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 void priq_detach(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); } /* * priq device interface */ int priqopen(dev_t dev, int flag, int fmt, struct lwp *l) { /* everything will be done when the queueing scheme is attached. */ return 0; } int priqclose(dev_t dev, int flag, int fmt, struct lwp *l) { struct priq_if *pif; while ((pif = pif_list) != NULL) { /* destroy all */ if (ALTQ_IS_ENABLED(pif->pif_ifq)) altq_disable(pif->pif_ifq); int error = altq_detach(pif->pif_ifq); switch (error) { case 0: case ENXIO: /* already disabled */ break; default: return error; } priq_detach(pif); } return 0; } int priqioctl(dev_t dev, ioctlcmd_t cmd, void *addr, int flag, struct lwp *l) { 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 = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_ALTQ, KAUTH_REQ_NETWORK_ALTQ_PRIQ, NULL, NULL, NULL)) != 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(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) priq_detach(pif); return (error); } static int priqcmd_if_detach(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); priq_detach(pif); return 0; } static int priqcmd_add_class(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(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(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(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(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(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]; memset(&stats, 0, sizeof(stats)); if (cl != NULL) get_class_stats(&stats, cl); if ((error = copyout((void *)&stats, (void *)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 */