tree d9dc654a4b66663779cea40ea7ac1fee6312c91e
parent 48bfd55e7e4149a304e89c1999436cf52d094a27
author Cong Wang <xiyou.wangcong@gmail.com> 1516933584 -0800
committer David S. Miller <davem@davemloft.net> 1517247735 -0500

net_sched: implement ->change_tx_queue_len() for pfifo_fast

pfifo_fast used to drop based on qdisc_dev(qdisc)->tx_queue_len,
so we have to resize skb array when we change tx_queue_len.

Other qdiscs which read tx_queue_len are fine because they
all save it to sch->limit or somewhere else in qdisc during init.
They don't have to implement this, it is nicer if they do so
that users don't have to re-configure qdisc after changing
tx_queue_len.

Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>