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authorPatrick McHardy <kaber@trash.net>2006-11-30 04:36:20 +0300
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-03 08:31:43 +0300
commit5e50da01d0ce7ef0ba3ed6cfabd62f327da0aca6 (patch)
tree6f2205ceae40a7fd5b498e94c60b65140740a027 /net/sched/sch_sfq.c
parent43effa1e57fc4635e0301b27d78f9d83afe78974 (diff)
downloadlinux-5e50da01d0ce7ef0ba3ed6cfabd62f327da0aca6.tar.xz
[NET_SCHED]: Fix endless loops (part 2): "simple" qdiscs
Convert the "simple" qdiscs to use qdisc_tree_decrease_qlen() where necessary: - all graft operations - destruction of old child qdiscs in prio, red and tbf change operation - purging of queue in sfq change operation Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_sfq.c')
-rw-r--r--net/sched/sch_sfq.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index d0d6e595a78c..459cda258a5c 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -393,6 +393,7 @@ static int sfq_change(struct Qdisc *sch, struct rtattr *opt)
{
struct sfq_sched_data *q = qdisc_priv(sch);
struct tc_sfq_qopt *ctl = RTA_DATA(opt);
+ unsigned int qlen;
if (opt->rta_len < RTA_LENGTH(sizeof(*ctl)))
return -EINVAL;
@@ -403,8 +404,10 @@ static int sfq_change(struct Qdisc *sch, struct rtattr *opt)
if (ctl->limit)
q->limit = min_t(u32, ctl->limit, SFQ_DEPTH);
+ qlen = sch->q.qlen;
while (sch->q.qlen >= q->limit-1)
sfq_drop(sch);
+ qdisc_tree_decrease_qlen(sch, qlen - sch->q.qlen);
del_timer(&q->perturb_timer);
if (q->perturb_period) {