netdev - Re: [PATCH v2 net-next 2/7] net: dsa: Pass ndo_setup

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Date:   Mon, 16 Sep 2019 12:53:52 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Ilias Apalodimas <ilias.apalodimas@...aro.org>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Vinicius Costa Gomes <vinicius.gomes@...el.com>,
        "Patel, Vedang" <vedang.patel@...el.com>,
        Richard Cochran <richardcochran@...il.com>,
        "Voon, Weifeng" <weifeng.voon@...el.com>, jiri@...lanox.com,
        m-karicheri2@...com, Jose Abreu <Jose.Abreu@...opsys.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Kurt Kanzenbach <kurt.kanzenbach@...utronix.de>,
        Joergen Andreasen <joergen.andreasen@...rochip.com>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH v2 net-next 2/7] net: dsa: Pass ndo_setup_tc slave
 callback to drivers

Hi Ilias,

On Mon, 16 Sep 2019 at 12:31, Ilias Apalodimas
<ilias.apalodimas@...aro.org> wrote:
>
> Hi Vladimir,
>
> Yes fixes my request on the initial RFC. Sorry for the delayed response.
>
> On Sat, Sep 14, 2019 at 04:17:57AM +0300, Vladimir Oltean wrote:
> > DSA currently handles shared block filters (for the classifier-action
> > qdisc) in the core due to what I believe are simply pragmatic reasons -
> > hiding the complexity from drivers and offerring a simple API for port
> > mirroring.
> >
> > Extend the dsa_slave_setup_tc function by passing all other qdisc
> > offloads to the driver layer, where the driver may choose what it
> > implements and how. DSA is simply a pass-through in this case.
> >
> > Signed-off-by: Vladimir Oltean <olteanv@...il.com>
> > Acked-by: Kurt Kanzenbach <kurt@...utronix.de>
> > ---
> > Changes since v1:
> > - Added Kurt Kanzenbach's Acked-by.
> >
> > Changes since RFC:
> > - Removed the unused declaration of struct tc_taprio_qopt_offload.
> >
> >  include/net/dsa.h |  2 ++
> >  net/dsa/slave.c   | 12 ++++++++----
> >  2 files changed, 10 insertions(+), 4 deletions(-)
> >
> > diff --git a/include/net/dsa.h b/include/net/dsa.h
> > index 96acb14ec1a8..541fb514e31d 100644
> > --- a/include/net/dsa.h
> > +++ b/include/net/dsa.h
> > @@ -515,6 +515,8 @@ struct dsa_switch_ops {
> >                                  bool ingress);
> >       void    (*port_mirror_del)(struct dsa_switch *ds, int port,
> >                                  struct dsa_mall_mirror_tc_entry *mirror);
> > +     int     (*port_setup_tc)(struct dsa_switch *ds, int port,
> > +                              enum tc_setup_type type, void *type_data);
> >
> >       /*
> >        * Cross-chip operations
> > diff --git a/net/dsa/slave.c b/net/dsa/slave.c
> > index 9a88035517a6..75d58229a4bd 100644
> > --- a/net/dsa/slave.c
> > +++ b/net/dsa/slave.c
> > @@ -1035,12 +1035,16 @@ static int dsa_slave_setup_tc_block(struct net_device *dev,
> >  static int dsa_slave_setup_tc(struct net_device *dev, enum tc_setup_type type,
> >                             void *type_data)
> >  {
> > -     switch (type) {
> > -     case TC_SETUP_BLOCK:
> > +     struct dsa_port *dp = dsa_slave_to_port(dev);
> > +     struct dsa_switch *ds = dp->ds;
> > +
> > +     if (type == TC_SETUP_BLOCK)
> >               return dsa_slave_setup_tc_block(dev, type_data);
> > -     default:
> > +
> > +     if (!ds->ops->port_setup_tc)
> >               return -EOPNOTSUPP;
> > -     }
> > +
> > +     return ds->ops->port_setup_tc(ds, dp->index, type, type_data);
> >  }
> >
> >  static void dsa_slave_get_stats64(struct net_device *dev,
> > --
> > 2.17.1
> >
>
> Acked-by: Ilias Apalodimas <ilias.apalodimas@...aro.org>

Thanks. Could you add this Acked-by to the v4 email, just so we keep
the discussion on the latest submitted version?

-Vladimir