tree 4b48a1db1f650dde62573063ae2ab83f1855e3d5
parent 4996b9098d5522f9d3233af6a7efd1fac5d43f00
author Eric Dumazet <edumazet@google.com> 1381159952 -0700
committer David S. Miller <davem@davemloft.net> 1381264053 -0400

net_sched: increment drop counters in qdisc_tree_decrease_qlen()

qdisc_tree_decrease_qlen() is called when some packets are dropped
on a qdisc, and we want to notify parents of qlen changes.

We also can increment parents qdisc qstats drop counters.

This permits more accurate drop counters up to root qdisc.

For example a graft operation typically resets a qdisc
(drops all packets) and call qdisc_tree_decrease_qlen()

Note that callers are responsible for their drop counters.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>