diff options
| author | Konstantin Khlebnikov <khlebnikov@yandex-team.ru> | 2017-08-15 16:39:59 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-16 10:55:34 -0700 |
| commit | 959466588aa7f84ccf79ae36a1d89542eaf9aaec (patch) | |
| tree | 92eb64dfd551fdcf0b9e09b113fe59bc3f178557 /net/sched/sch_hfsc.c | |
| parent | 869cec99b4f7c4b97e3e912529cf8505ed1e6c25 (diff) | |
net_sched: call qlen_notify only if child qdisc is empty
This callback is used for deactivating class in parent qdisc.
This is cheaper to test queue length right here.
Also this allows to catch draining screwed backlog and prevent
second deactivation of already inactive parent class which will
crash kernel for sure. Kernel with print warning at destruction
of child qdisc where no packets but backlog is not zero.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_hfsc.c')
| -rw-r--r-- | net/sched/sch_hfsc.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c index fd15200f8627..14c99870cdb6 100644 --- a/net/sched/sch_hfsc.c +++ b/net/sched/sch_hfsc.c @@ -1221,10 +1221,8 @@ hfsc_qlen_notify(struct Qdisc *sch, unsigned long arg) { struct hfsc_class *cl = (struct hfsc_class *)arg; - if (cl->qdisc->q.qlen == 0) { - update_vf(cl, 0, 0); - set_passive(cl); - } + update_vf(cl, 0, 0); + set_passive(cl); } static unsigned long |