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net-sched: sch_htb: remove write-only qdisc filter_cnt

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The filter_cnt is supposed to count filter references to a class.
Since the qdisc can't be the target of a filter, it doesn't need
a filter_cnt. In fact the counter is never decreased since cls_api
considers a return value of zero a failure and doesn't unbind again.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2008-07-05 23:23:27 -07:00 committed by David S. Miller
parent 4207759939
commit aee18a8cf2
1 changed files with 0 additions and 7 deletions
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7
net/sched/sch_htb.c
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@ -159,7 +159,6 @@ struct htb_sched {
/* filters for qdisc itself */
struct tcf_proto *filter_list;
int filter_cnt;
int rate2quantum; /* quant = rate / rate2quantum */
psched_time_t now; /* cached dequeue time */
@ -1484,7 +1483,6 @@ static struct tcf_proto **htb_find_tcf(struct Qdisc *sch, unsigned long arg)
static unsigned long htb_bind_filter(struct Qdisc *sch, unsigned long parent,
u32 classid)
{
struct htb_sched *q = qdisc_priv(sch);
struct htb_class *cl = htb_find(classid, sch);
/*if (cl && !cl->level) return 0;
@ -1498,20 +1496,15 @@ static unsigned long htb_bind_filter(struct Qdisc *sch, unsigned long parent,
*/
if (cl)
cl->filter_cnt++;
else
q->filter_cnt++;
return (unsigned long)cl;
}
static void htb_unbind_filter(struct Qdisc *sch, unsigned long arg)
{
struct htb_sched *q = qdisc_priv(sch);
struct htb_class *cl = (struct htb_class *)arg;
if (cl)
cl->filter_cnt--;
else
q->filter_cnt--;
}
static void htb_walk(struct Qdisc *sch, struct qdisc_walker *arg)