struct hfsc_class
{
- u32 classid; /* class id */
+ struct Qdisc_class_common cl_common;
unsigned int refcnt; /* usage count */
struct gnet_stats_basic bstats;
struct rb_node vt_node; /* parent's vt_tree member */
struct rb_root cf_tree; /* active children sorted by cl_f */
struct rb_node cf_node; /* parent's cf_heap member */
- struct list_head hlist; /* hash list member */
struct list_head dlist; /* drop list member */
u64 cl_total; /* total work in bytes */
unsigned long cl_nactive; /* number of active children */
};
-#define HFSC_HSIZE 16
-
struct hfsc_sched
{
u16 defcls; /* default class id */
struct hfsc_class root; /* root class */
- struct list_head clhash[HFSC_HSIZE]; /* class hash */
+ struct Qdisc_class_hash clhash; /* class hash */
struct rb_root eligible; /* eligible tree */
struct list_head droplist; /* active leaf class list (for
dropping) */
- struct sk_buff_head requeue; /* requeued packet */
struct qdisc_watchdog watchdog; /* watchdog timer */
};
*/
}
-/*
- * hack to get length of first packet in queue.
- */
static unsigned int
qdisc_peek_len(struct Qdisc *sch)
{
struct sk_buff *skb;
unsigned int len;
- skb = sch->dequeue(sch);
+ skb = sch->ops->peek(sch);
if (skb == NULL) {
if (net_ratelimit())
printk("qdisc_peek_len: non work-conserving qdisc ?\n");
return 0;
}
- len = skb->len;
- if (unlikely(sch->ops->requeue(skb, sch) != NET_XMIT_SUCCESS)) {
- if (net_ratelimit())
- printk("qdisc_peek_len: failed to requeue\n");
- qdisc_tree_decrease_qlen(sch, 1);
- return 0;
- }
+ len = qdisc_pkt_len(skb);
+
return len;
}
} while ((cl = cl->cl_parent) != NULL);
}
-static inline unsigned int
-hfsc_hash(u32 h)
-{
- h ^= h >> 8;
- h ^= h >> 4;
-
- return h & (HFSC_HSIZE - 1);
-}
-
static inline struct hfsc_class *
hfsc_find_class(u32 classid, struct Qdisc *sch)
{
struct hfsc_sched *q = qdisc_priv(sch);
- struct hfsc_class *cl;
+ struct Qdisc_class_common *clc;
- list_for_each_entry(cl, &q->clhash[hfsc_hash(classid)], hlist) {
- if (cl->classid == classid)
- return cl;
- }
- return NULL;
+ clc = qdisc_class_find(&q->clhash, classid);
+ if (clc == NULL)
+ return NULL;
+ return container_of(clc, struct hfsc_class, cl_common);
}
static void
cl->cl_flags |= HFSC_USC;
}
+static const struct nla_policy hfsc_policy[TCA_HFSC_MAX + 1] = {
+ [TCA_HFSC_RSC] = { .len = sizeof(struct tc_service_curve) },
+ [TCA_HFSC_FSC] = { .len = sizeof(struct tc_service_curve) },
+ [TCA_HFSC_USC] = { .len = sizeof(struct tc_service_curve) },
+};
+
static int
hfsc_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
struct nlattr **tca, unsigned long *arg)
if (opt == NULL)
return -EINVAL;
- err = nla_parse_nested(tb, TCA_HFSC_MAX, opt, NULL);
+ err = nla_parse_nested(tb, TCA_HFSC_MAX, opt, hfsc_policy);
if (err < 0)
return err;
if (tb[TCA_HFSC_RSC]) {
- if (nla_len(tb[TCA_HFSC_RSC]) < sizeof(*rsc))
- return -EINVAL;
rsc = nla_data(tb[TCA_HFSC_RSC]);
if (rsc->m1 == 0 && rsc->m2 == 0)
rsc = NULL;
}
if (tb[TCA_HFSC_FSC]) {
- if (nla_len(tb[TCA_HFSC_FSC]) < sizeof(*fsc))
- return -EINVAL;
fsc = nla_data(tb[TCA_HFSC_FSC]);
if (fsc->m1 == 0 && fsc->m2 == 0)
fsc = NULL;
}
if (tb[TCA_HFSC_USC]) {
- if (nla_len(tb[TCA_HFSC_USC]) < sizeof(*usc))
- return -EINVAL;
usc = nla_data(tb[TCA_HFSC_USC]);
if (usc->m1 == 0 && usc->m2 == 0)
usc = NULL;
if (cl != NULL) {
if (parentid) {
- if (cl->cl_parent && cl->cl_parent->classid != parentid)
+ if (cl->cl_parent &&
+ cl->cl_parent->cl_common.classid != parentid)
return -EINVAL;
if (cl->cl_parent == NULL && parentid != TC_H_ROOT)
return -EINVAL;
}
cur_time = psched_get_time();
+ if (tca[TCA_RATE]) {
+ err = gen_replace_estimator(&cl->bstats, &cl->rate_est,
+ qdisc_root_sleeping_lock(sch),
+ tca[TCA_RATE]);
+ if (err)
+ return err;
+ }
+
sch_tree_lock(sch);
if (rsc != NULL)
hfsc_change_rsc(cl, rsc, cur_time);
}
sch_tree_unlock(sch);
- if (tca[TCA_RATE])
- gen_replace_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev->queue_lock,
- tca[TCA_RATE]);
return 0;
}
if (cl == NULL)
return -ENOBUFS;
+ if (tca[TCA_RATE]) {
+ err = gen_new_estimator(&cl->bstats, &cl->rate_est,
+ qdisc_root_sleeping_lock(sch),
+ tca[TCA_RATE]);
+ if (err) {
+ kfree(cl);
+ return err;
+ }
+ }
+
if (rsc != NULL)
hfsc_change_rsc(cl, rsc, 0);
if (fsc != NULL)
if (usc != NULL)
hfsc_change_usc(cl, usc, 0);
+ cl->cl_common.classid = classid;
cl->refcnt = 1;
- cl->classid = classid;
cl->sched = q;
cl->cl_parent = parent;
- cl->qdisc = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops, classid);
+ cl->qdisc = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+ &pfifo_qdisc_ops, classid);
if (cl->qdisc == NULL)
cl->qdisc = &noop_qdisc;
INIT_LIST_HEAD(&cl->children);
cl->cf_tree = RB_ROOT;
sch_tree_lock(sch);
- list_add_tail(&cl->hlist, &q->clhash[hfsc_hash(classid)]);
+ qdisc_class_hash_insert(&q->clhash, &cl->cl_common);
list_add_tail(&cl->siblings, &parent->children);
if (parent->level == 0)
hfsc_purge_queue(sch, parent);
cl->cl_pcvtoff = parent->cl_cvtoff;
sch_tree_unlock(sch);
- if (tca[TCA_RATE])
- gen_new_estimator(&cl->bstats, &cl->rate_est,
- &sch->dev->queue_lock, tca[TCA_RATE]);
+ qdisc_class_hash_grow(sch, &q->clhash);
+
*arg = (unsigned long)cl;
return 0;
}
{
struct hfsc_sched *q = qdisc_priv(sch);
- tcf_destroy_chain(cl->filter_list);
+ tcf_destroy_chain(&cl->filter_list);
qdisc_destroy(cl->qdisc);
gen_kill_estimator(&cl->bstats, &cl->rate_est);
if (cl != &q->root)
hfsc_adjust_levels(cl->cl_parent);
hfsc_purge_queue(sch, cl);
- list_del(&cl->hlist);
+ qdisc_class_hash_remove(&q->clhash, &cl->cl_common);
if (--cl->refcnt == 0)
hfsc_destroy_class(sch, cl);
if (cl->level == 0)
return cl;
- *qerr = NET_XMIT_BYPASS;
+ *qerr = NET_XMIT_SUCCESS | __NET_XMIT_BYPASS;
tcf = q->root.filter_list;
while (tcf && (result = tc_classify(skb, tcf, &res)) >= 0) {
#ifdef CONFIG_NET_CLS_ACT
switch (result) {
case TC_ACT_QUEUED:
case TC_ACT_STOLEN:
- *qerr = NET_XMIT_SUCCESS;
+ *qerr = NET_XMIT_SUCCESS | __NET_XMIT_STOLEN;
case TC_ACT_SHOT:
return NULL;
}
if (cl->level > 0)
return -EINVAL;
if (new == NULL) {
- new = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
- cl->classid);
+ new = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+ &pfifo_qdisc_ops,
+ cl->cl_common.classid);
if (new == NULL)
new = &noop_qdisc;
}
sch_tree_lock(sch);
hfsc_purge_queue(sch, cl);
- *old = xchg(&cl->qdisc, new);
+ *old = cl->qdisc;
+ cl->qdisc = new;
sch_tree_unlock(sch);
return 0;
}
struct hfsc_class *cl = (struct hfsc_class *)arg;
struct nlattr *nest;
- tcm->tcm_parent = cl->cl_parent ? cl->cl_parent->classid : TC_H_ROOT;
- tcm->tcm_handle = cl->classid;
+ tcm->tcm_parent = cl->cl_parent ? cl->cl_parent->cl_common.classid :
+ TC_H_ROOT;
+ tcm->tcm_handle = cl->cl_common.classid;
if (cl->level == 0)
tcm->tcm_info = cl->qdisc->handle;
nla_put_failure:
nla_nest_cancel(skb, nest);
- return -1;
+ return -EMSGSIZE;
}
static int
hfsc_walk(struct Qdisc *sch, struct qdisc_walker *arg)
{
struct hfsc_sched *q = qdisc_priv(sch);
+ struct hlist_node *n;
struct hfsc_class *cl;
unsigned int i;
if (arg->stop)
return;
- for (i = 0; i < HFSC_HSIZE; i++) {
- list_for_each_entry(cl, &q->clhash[i], hlist) {
+ for (i = 0; i < q->clhash.hashsize; i++) {
+ hlist_for_each_entry(cl, n, &q->clhash.hash[i],
+ cl_common.hnode) {
if (arg->count < arg->skip) {
arg->count++;
continue;
{
struct hfsc_sched *q = qdisc_priv(sch);
struct tc_hfsc_qopt *qopt;
- unsigned int i;
+ int err;
if (opt == NULL || nla_len(opt) < sizeof(*qopt))
return -EINVAL;
qopt = nla_data(opt);
q->defcls = qopt->defcls;
- for (i = 0; i < HFSC_HSIZE; i++)
- INIT_LIST_HEAD(&q->clhash[i]);
+ err = qdisc_class_hash_init(&q->clhash);
+ if (err < 0)
+ return err;
q->eligible = RB_ROOT;
INIT_LIST_HEAD(&q->droplist);
- skb_queue_head_init(&q->requeue);
+ q->root.cl_common.classid = sch->handle;
q->root.refcnt = 1;
- q->root.classid = sch->handle;
q->root.sched = q;
- q->root.qdisc = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
+ q->root.qdisc = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+ &pfifo_qdisc_ops,
sch->handle);
if (q->root.qdisc == NULL)
q->root.qdisc = &noop_qdisc;
q->root.vt_tree = RB_ROOT;
q->root.cf_tree = RB_ROOT;
- list_add(&q->root.hlist, &q->clhash[hfsc_hash(q->root.classid)]);
+ qdisc_class_hash_insert(&q->clhash, &q->root.cl_common);
+ qdisc_class_hash_grow(sch, &q->clhash);
qdisc_watchdog_init(&q->watchdog, sch);
{
struct hfsc_sched *q = qdisc_priv(sch);
struct hfsc_class *cl;
+ struct hlist_node *n;
unsigned int i;
- for (i = 0; i < HFSC_HSIZE; i++) {
- list_for_each_entry(cl, &q->clhash[i], hlist)
+ for (i = 0; i < q->clhash.hashsize; i++) {
+ hlist_for_each_entry(cl, n, &q->clhash.hash[i], cl_common.hnode)
hfsc_reset_class(cl);
}
- __skb_queue_purge(&q->requeue);
q->eligible = RB_ROOT;
INIT_LIST_HEAD(&q->droplist);
qdisc_watchdog_cancel(&q->watchdog);
hfsc_destroy_qdisc(struct Qdisc *sch)
{
struct hfsc_sched *q = qdisc_priv(sch);
- struct hfsc_class *cl, *next;
+ struct hlist_node *n, *next;
+ struct hfsc_class *cl;
unsigned int i;
- for (i = 0; i < HFSC_HSIZE; i++) {
- list_for_each_entry_safe(cl, next, &q->clhash[i], hlist)
+ for (i = 0; i < q->clhash.hashsize; i++) {
+ hlist_for_each_entry(cl, n, &q->clhash.hash[i], cl_common.hnode)
+ tcf_destroy_chain(&cl->filter_list);
+ }
+ for (i = 0; i < q->clhash.hashsize; i++) {
+ hlist_for_each_entry_safe(cl, n, next, &q->clhash.hash[i],
+ cl_common.hnode)
hfsc_destroy_class(sch, cl);
}
- __skb_queue_purge(&q->requeue);
+ qdisc_class_hash_destroy(&q->clhash);
qdisc_watchdog_cancel(&q->watchdog);
}
hfsc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
struct hfsc_class *cl;
- unsigned int len;
- int err;
+ int uninitialized_var(err);
cl = hfsc_classify(skb, sch, &err);
if (cl == NULL) {
- if (err == NET_XMIT_BYPASS)
+ if (err & __NET_XMIT_BYPASS)
sch->qstats.drops++;
kfree_skb(skb);
return err;
}
- len = skb->len;
- err = cl->qdisc->enqueue(skb, cl->qdisc);
+ err = qdisc_enqueue(skb, cl->qdisc);
if (unlikely(err != NET_XMIT_SUCCESS)) {
- cl->qstats.drops++;
- sch->qstats.drops++;
+ if (net_xmit_drop_count(err)) {
+ cl->qstats.drops++;
+ sch->qstats.drops++;
+ }
return err;
}
if (cl->qdisc->q.qlen == 1)
- set_active(cl, len);
+ set_active(cl, qdisc_pkt_len(skb));
cl->bstats.packets++;
- cl->bstats.bytes += len;
+ cl->bstats.bytes += qdisc_pkt_len(skb);
sch->bstats.packets++;
- sch->bstats.bytes += len;
+ sch->bstats.bytes += qdisc_pkt_len(skb);
sch->q.qlen++;
return NET_XMIT_SUCCESS;
if (sch->q.qlen == 0)
return NULL;
- if ((skb = __skb_dequeue(&q->requeue)))
- goto out;
cur_time = psched_get_time();
}
}
- skb = cl->qdisc->dequeue(cl->qdisc);
+ skb = qdisc_dequeue_peeked(cl->qdisc);
if (skb == NULL) {
if (net_ratelimit())
printk("HFSC: Non-work-conserving qdisc ?\n");
return NULL;
}
- update_vf(cl, skb->len, cur_time);
+ update_vf(cl, qdisc_pkt_len(skb), cur_time);
if (realtime)
- cl->cl_cumul += skb->len;
+ cl->cl_cumul += qdisc_pkt_len(skb);
if (cl->qdisc->q.qlen != 0) {
if (cl->cl_flags & HFSC_RSC) {
set_passive(cl);
}
- out:
sch->flags &= ~TCQ_F_THROTTLED;
sch->q.qlen--;
return skb;
}
-static int
-hfsc_requeue(struct sk_buff *skb, struct Qdisc *sch)
-{
- struct hfsc_sched *q = qdisc_priv(sch);
-
- __skb_queue_head(&q->requeue, skb);
- sch->q.qlen++;
- sch->qstats.requeues++;
- return NET_XMIT_SUCCESS;
-}
-
static unsigned int
hfsc_drop(struct Qdisc *sch)
{
.dump = hfsc_dump_qdisc,
.enqueue = hfsc_enqueue,
.dequeue = hfsc_dequeue,
- .requeue = hfsc_requeue,
+ .peek = qdisc_peek_dequeued,
.drop = hfsc_drop,
.cl_ops = &hfsc_class_ops,
.priv_size = sizeof(struct hfsc_sched),
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff