On Tue, Feb 26, 2019 at 3:19 PM Eric Dumazet <eric.duma...@gmail.com> wrote: > > > > On 02/25/2019 10:42 PM, Eric Dumazet wrote: > > HTB + pfifo_fast as a leaf qdisc hits badly the following warning in > > htb_activate() : > > > > WARN_ON(cl->level || !cl->leaf.q || !cl->leaf.q->q.qlen); > > > > This is because pfifo_fast does not update sch->q.qlen, but per cpu > > counters. > > So cl->leaf.q->q.qlen is zero. > > > > HFSC, CBQ, DRR, QFQ have the same problem. > > > > Any ideas how we can fix this ? > > What about something simple for stable ? > ( I yet have to boot/test this )
Is merely updating qlen sufficient for fixing it? I thought it is because of the lack of qdisc_tree_reduce_backlog() in pfifo_fast.
