netdev - Re: [PATCH net-next 2/2] dpaa2-eth: fix return codes used in ndo_setup

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Date:   Thu, 23 Apr 2020 08:28:58 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     netdev@...r.kernel.org,
        Ilias Apalodimas <ilias.apalodimas@...aro.org>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        ruxandra.radulescu@....com, ioana.ciornei@....com,
        nipun.gupta@....com, shawnguo@...nel.org
Subject: Re: [PATCH net-next 2/2] dpaa2-eth: fix return codes used in
 ndo_setup_tc

On Thu, 23 Apr 2020 16:57:50 +0200
Jesper Dangaard Brouer <brouer@...hat.com> wrote:

> Drivers ndo_setup_tc call should return -EOPNOTSUPP, when it cannot
> support the qdisc type. Other return values will result in failing the
> qdisc setup.  This lead to qdisc noop getting assigned, which will
> drop all TX packets on the interface.
> 
> Fixes: ab1e6de2bd49 ("dpaa2-eth: Add mqprio support")
> Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>

Would it be possible to use extack as well?
Putting errors in dmesg is unhelpful