netdev - RE: [EXT] Re: [net-next, 1/2] enetc: Configure the Time-Aware Scheduler via tc-taprio offload

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Date:   Tue, 12 Nov 2019 06:48:54 +0000
From:   Po Liu <po.liu@....com>
To:     David Miller <davem@...hat.com>
CC:     Claudiu Manoil <claudiu.manoil@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "vinicius.gomes@...el.com" <vinicius.gomes@...el.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Roy Zang <roy.zang@....com>, Mingkai Hu <mingkai.hu@....com>,
        Jerry Huang <jerry.huang@....com>, Leo Li <leoyang.li@....com>
Subject: RE: [EXT] Re: [net-next, 1/2] enetc: Configure the Time-Aware
 Scheduler via tc-taprio offload

Hi David,


Br,
Po Liu

> -----Original Message-----
> From: David Miller <davem@...hat.com>
> Sent: 2019年11月12日 13:51
> To: Po Liu <po.liu@....com>
> Cc: Claudiu Manoil <claudiu.manoil@....com>; linux-kernel@...r.kernel.org;
> netdev@...r.kernel.org; vinicius.gomes@...el.com; Vladimir Oltean
> <vladimir.oltean@....com>; Alexandru Marginean
> <alexandru.marginean@....com>; Xiaoliang Yang
> <xiaoliang.yang_1@....com>; Roy Zang <roy.zang@....com>; Mingkai Hu
> <mingkai.hu@....com>; Jerry Huang <jerry.huang@....com>; Leo Li
> <leoyang.li@....com>
> Subject: [EXT] Re: [net-next, 1/2] enetc: Configure the Time-Aware Scheduler via
> tc-taprio offload
> 
> Caution: EXT Email
> 
> From: Po Liu <po.liu@....com>
> Date: Mon, 11 Nov 2019 04:41:26 +0000
> 
> > +fsl-enetc-$(CONFIG_NET_SCH_TAPRIO) += enetc_qos.o
> 
> Code is Kconfig guarded.
> > +     case TC_SETUP_QDISC_TAPRIO:
> > +             return enetc_setup_tc_taprio(ndev, type_data);
> 
> Yet invoked unconditionally.
> 
> I can see just by reading your code that various configurations will result in link
> errors.

I get it. Thanks!

> 
>  ...
> > +int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data) {
> > +     struct tc_taprio_qopt_offload *taprio = type_data;
> > +     struct enetc_ndev_priv *priv = netdev_priv(ndev);
> > +     int i;
> > +
> > +     for (i = 0; i < priv->num_tx_rings; i++)
> > +             enetc_set_bdr_prio(&priv->si->hw,
> > +                                priv->tx_ring[i]->index,
> > +                                taprio->enable ? i : 0);
> > +
> > +     return enetc_setup_taprio(ndev, taprio); }
> > --
> > 2.17.1
> >