* Credits (in time order) for older HTB versions:
* Stef Coene <stef.coene@docum.org>
* HTB support at LARTC mailing list
- * Ondrej Kraus, <krauso@barr.cz>
+ * Ondrej Kraus, <krauso@barr.cz>
* found missing INIT_QDISC(htb)
* Vladimir Smelhaus, Aamer Akhter, Bert Hubert
* helped a lot to locate nasty class stall bug
Author: devik@cdi.cz
========================================================================
HTB is like TBF with multiple classes. It is also similar to CBQ because
- it allows to assign priority to each class in hierarchy.
+ it allows to assign priority to each class in hierarchy.
In fact it is another implementation of Floyd's formal sharing.
Levels:
- Each class is assigned level. Leaf has ALWAYS level 0 and root
+ Each class is assigned level. Leaf has ALWAYS level 0 and root
classes have level TC_HTB_MAXDEPTH-1. Interior nodes has level
one less than their parent.
*/
* We allow direct class selection by classid in priority. The we examine
* filters in qdisc and in inner nodes (if higher filter points to the inner
* node). If we end up with classid MAJOR:0 we enqueue the skb into special
- * internal fifo (direct). These packets then go directly thru. If we still
+ * internal fifo (direct). These packets then go directly thru. If we still
* have no valid leaf we try to use MAJOR:default leaf. It still unsuccessfull
* then finish and return direct queue.
*/
* htb_activate_prios - creates active classe's feed chain
*
* The class is connected to ancestors and/or appropriate rows
- * for priorities it is participating on. cl->cmode must be new
+ * for priorities it is participating on. cl->cmode must be new
* (activated) mode. It does nothing if cl->prio_activity == 0.
*/
static void htb_activate_prios(struct htb_sched *q, struct htb_class *cl)
/**
* htb_deactivate_prios - remove class from feed chain
*
- * cl->cmode must represent old mode (before deactivation). It does
+ * cl->cmode must represent old mode (before deactivation). It does
* nothing if cl->prio_activity == 0. Class is removed from all feed
* chains and rows.
*/
*
* It computes cl's mode at time cl->t_c+diff and returns it. If mode
* is not HTB_CAN_SEND then cl->pq_key is updated to time difference
- * from now to time when cl will change its state.
+ * from now to time when cl will change its state.
* Also it is worth to note that class mode doesn't change simply
- * at cl->{c,}tokens == 0 but there can rather be hysteresis of
+ * at cl->{c,}tokens == 0 but there can rather be hysteresis of
* 0 .. -cl->{c,}buffer range. It is meant to limit number of
* mode transitions per time unit. The speed gain is about 1/6.
*/
}
/**
- * htb_activate - inserts leaf cl into appropriate active feeds
+ * htb_activate - inserts leaf cl into appropriate active feeds
*
* Routine learns (new) priority of leaf and activates feed chain
* for the prio. It can be called on already active leaf safely.
}
/**
- * htb_deactivate - remove leaf cl from active feeds
+ * htb_deactivate - remove leaf cl from active feeds
*
* Make sure that leaf is active. In the other words it can't be called
* with non-active leaf. It also removes class from the drop list.
for (i = 0; i < 65535; i++) {
if (!*sp->pptr && *sp->pid) {
- /* ptr was invalidated but id is valid - try to recover
+ /* ptr was invalidated but id is valid - try to recover
the original or next ptr */
*sp->pptr =
htb_id_find_next_upper(prio, sp->root, *sp->pid);
/* class can be empty - it is unlikely but can be true if leaf
qdisc drops packets in enqueue routine or if someone used
- graft operation on the leaf since last dequeue;
+ graft operation on the leaf since last dequeue;
simply deactivate and skip such class */
if (unlikely(cl->un.leaf.q->q.qlen == 0)) {
struct htb_class *next;
if (cl && !cl->level) {
if (new == NULL &&
(new = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops,
- cl->classid))
+ cl->classid))
== NULL)
return -ENOBUFS;
sch_tree_lock(sch);
del_timer_sync(&q->rttim);
#endif
/* This line used to be after htb_destroy_class call below
- and surprisingly it worked in 2.4. But it must precede it
+ and surprisingly it worked in 2.4. But it must precede it
because filter need its target class alive to be able to call
unbind_filter on it (without Oops). */
htb_destroy_filters(&q->filter_list);
projects / linux-drm-fsl-dcu.git / blobdiff