From: Nogah Frankel <nog...@mellanox.com>
Date: Thu, 26 Apr 2018 16:32:36 +0300
> When a band is created, it is set to the default qdisc, which is
> "invisible" pfifo.
> However, if a band is set to a qdisc that is later being deleted, it will
> be set to noop qdisc. This can cause a packet loss, while there is no clear
> user indication for it. ("invisible" qdisc are not being shown by default).
> This patch sets a band to the default qdisc, rather then the noop qdisc, on
> delete operation.
>
> Signed-off-by: Nogah Frankel <nog...@mellanox.com>
Like Cong, I'm worried this will break something. The code has
behaved this way for 2 decades or longer.
If you want to put another qdisc there, and thus not drop any traffic,
modify the qdisc to a new one instead of performing a delete operation.
