1 files changed, 16 insertions, 120 deletions

diff --git a/net/sched/sch_prio.c b/net/sched/sch_prio.c
index 39157f7bc046..536ca474dc69 100644
--- a/net/sched/sch_prio.c
+++ b/net/sched/sch_prio.c
@@ -24,11 +24,9 @@
 struct prio_sched_data
 {
         int bands;
-        int curband; /* for round-robin */
         struct tcf_proto *filter_list;
         u8  prio2band[TC_PRIO_MAX+1];
         struct Qdisc *queues[TCQ_PRIO_BANDS];
-        int mq;
 };
 
 
@@ -55,17 +53,14 @@ prio_classify(struct sk_buff *skb, struct Qdisc *sch, int *qerr)
                 if (!q->filter_list || err < 0) {
                         if (TC_H_MAJ(band))
                                 band = 0;
-                        band = q->prio2band[band&TC_PRIO_MAX];
-                        goto out;
+                        return q->queues[q->prio2band[band&TC_PRIO_MAX]];
                 }
                 band = res.classid;
         }
         band = TC_H_MIN(band) - 1;
         if (band >= q->bands)
-                band = q->prio2band[0];
-out:
-        if (q->mq)
-                skb_set_queue_mapping(skb, band);
+                return q->queues[q->prio2band[0]];
+
         return q->queues[band];
 }
 
@@ -123,68 +118,23 @@ prio_requeue(struct sk_buff *skb, struct Qdisc* sch)
 }
 
 
-static struct sk_buff *
-prio_dequeue(struct Qdisc* sch)
+static struct sk_buff *prio_dequeue(struct Qdisc* sch)
 {
-        struct sk_buff *skb;
         struct prio_sched_data *q = qdisc_priv(sch);
         int prio;
-        struct Qdisc *qdisc;
 
         for (prio = 0; prio < q->bands; prio++) {
-                /* Check if the target subqueue is available before
-                 * pulling an skb.  This way we avoid excessive requeues
-                 * for slower queues.
-                 */
-                if (!__netif_subqueue_stopped(qdisc_dev(sch),
-                                              (q->mq ? prio : 0))) {
-                        qdisc = q->queues[prio];
-                        skb = qdisc->dequeue(qdisc);
-                        if (skb) {
-                                sch->q.qlen--;
-                                return skb;
-                        }
+                struct Qdisc *qdisc = q->queues[prio];
+                struct sk_buff *skb = qdisc->dequeue(qdisc);
+                if (skb) {
+                        sch->q.qlen--;
+                        return skb;
                 }
         }
         return NULL;
 
 }
 
-static struct sk_buff *rr_dequeue(struct Qdisc* sch)
-{
-        struct sk_buff *skb;
-        struct prio_sched_data *q = qdisc_priv(sch);
-        struct Qdisc *qdisc;
-        int bandcount;
-
-        /* Only take one pass through the queues.  If nothing is available,
-         * return nothing.
-         */
-        for (bandcount = 0; bandcount < q->bands; bandcount++) {
-                /* Check if the target subqueue is available before
-                 * pulling an skb.  This way we avoid excessive requeues
-                 * for slower queues.  If the queue is stopped, try the
-                 * next queue.
-                 */
-                if (!__netif_subqueue_stopped(qdisc_dev(sch),
-                                              (q->mq ? q->curband : 0))) {
-                        qdisc = q->queues[q->curband];
-                        skb = qdisc->dequeue(qdisc);
-                        if (skb) {
-                                sch->q.qlen--;
-                                q->curband++;
-                                if (q->curband >= q->bands)
-                                        q->curband = 0;
-                                return skb;
-                        }
-                }
-                q->curband++;
-                if (q->curband >= q->bands)
-                        q->curband = 0;
-        }
-        return NULL;
-}
-
 static unsigned int prio_drop(struct Qdisc* sch)
 {
         struct prio_sched_data *q = qdisc_priv(sch);
@@ -229,45 +179,22 @@ static int prio_tune(struct Qdisc *sch, struct nlattr *opt)
 {
         struct prio_sched_data *q = qdisc_priv(sch);
         struct tc_prio_qopt *qopt;
-        struct nlattr *tb[TCA_PRIO_MAX + 1];
-        int err;
         int i;
 
-        err = nla_parse_nested_compat(tb, TCA_PRIO_MAX, opt, NULL, qopt,
-                                      sizeof(*qopt));
-        if (err < 0)
-                return err;
-
-        q->bands = qopt->bands;
-        /* If we're multiqueue, make sure the number of incoming bands
-         * matches the number of queues on the device we're associating with.
-         * If the number of bands requested is zero, then set q->bands to
-         * dev->egress_subqueue_count.  Also, the root qdisc must be the
-         * only one that is enabled for multiqueue, since it's the only one
-         * that interacts with the underlying device.
-         */
-        q->mq = nla_get_flag(tb[TCA_PRIO_MQ]);
-        if (q->mq) {
-                if (sch->parent != TC_H_ROOT)
-                        return -EINVAL;
-                if (netif_is_multiqueue(qdisc_dev(sch))) {
-                        if (q->bands == 0)
-                                q->bands = qdisc_dev(sch)->egress_subqueue_count;
-                        else if (q->bands != qdisc_dev(sch)->egress_subqueue_count)
-                                return -EINVAL;
-                } else
-                        return -EOPNOTSUPP;
-        }
+        if (nla_len(opt) < sizeof(*qopt))
+                return -EINVAL;
+        qopt = nla_data(opt);
 
-        if (q->bands > TCQ_PRIO_BANDS || q->bands < 2)
+        if (qopt->bands > TCQ_PRIO_BANDS || qopt->bands < 2)
                 return -EINVAL;
 
         for (i=0; i<=TC_PRIO_MAX; i++) {
-                if (qopt->priomap[i] >= q->bands)
+                if (qopt->priomap[i] >= qopt->bands)
                         return -EINVAL;
         }
 
         sch_tree_lock(sch);
+        q->bands = qopt->bands;
         memcpy(q->prio2band, qopt->priomap, TC_PRIO_MAX+1);
 
         for (i=q->bands; i<TCQ_PRIO_BANDS; i++) {
@@ -333,10 +260,6 @@ static int prio_dump(struct Qdisc *sch, struct sk_buff *skb)
         nest = nla_nest_compat_start(skb, TCA_OPTIONS, sizeof(opt), &opt);
         if (nest == NULL)
                 goto nla_put_failure;
-        if (q->mq) {
-                if (nla_put_flag(skb, TCA_PRIO_MQ) < 0)
-                        goto nla_put_failure;
-        }
         nla_nest_compat_end(skb, nest);
 
         return skb->len;
@@ -509,44 +432,17 @@ static struct Qdisc_ops prio_qdisc_ops __read_mostly = {
         .owner          =       THIS_MODULE,
 };
 
-static struct Qdisc_ops rr_qdisc_ops __read_mostly = {
-        .next           =       NULL,
-        .cl_ops         =       &prio_class_ops,
-        .id             =       "rr",
-        .priv_size      =       sizeof(struct prio_sched_data),
-        .enqueue        =       prio_enqueue,
-        .dequeue        =       rr_dequeue,
-        .requeue        =       prio_requeue,
-        .drop           =       prio_drop,
-        .init           =       prio_init,
-        .reset          =       prio_reset,
-        .destroy        =       prio_destroy,
-        .change         =       prio_tune,
-        .dump           =       prio_dump,
-        .owner          =       THIS_MODULE,
-};
-
 static int __init prio_module_init(void)
 {
-        int err;
-
-        err = register_qdisc(&prio_qdisc_ops);
-        if (err < 0)
-                return err;
-        err = register_qdisc(&rr_qdisc_ops);
-        if (err < 0)
-                unregister_qdisc(&prio_qdisc_ops);
-        return err;
+        return register_qdisc(&prio_qdisc_ops);
 }
 
 static void __exit prio_module_exit(void)
 {
         unregister_qdisc(&prio_qdisc_ops);
-        unregister_qdisc(&rr_qdisc_ops);
 }
 
 module_init(prio_module_init)
 module_exit(prio_module_exit)
 
 MODULE_LICENSE("GPL");
-MODULE_ALIAS("sch_rr");