tree d73ec90b0c0cfd1191ef35a4aa0eaea78af1f100
parent 86a7996cc8a078793670d82ed97d5a99bb4e8496
author WANG Cong <xiyou.wangcong@gmail.com> 1456440901 -0800
committer David S. Miller <davem@davemloft.net> 1456783353 -0500

net_sched: update hierarchical backlog too

When the bottom qdisc decides to, for example, drop some packet,
it calls qdisc_tree_decrease_qlen() to update the queue length
for all its ancestors, we need to update the backlog too to
keep the stats on root qdisc accurate.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>