netdev - Re: [PATCH bpf-next 2/6] xsk: add support for need_wakeup flag in AF

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Message-ID: <CAJ8uoz0jXyVt8OPOq+B8L7gEm8bbd8cE5vdf3-KAhaVK871k8w@mail.gmail.com>
Date:   Thu, 13 Jun 2019 21:07:26 +0200
From:   Magnus Karlsson <magnus.karlsson@...il.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     Magnus Karlsson <magnus.karlsson@...el.com>,
        Björn Töpel <bjorn.topel@...el.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Network Development <netdev@...r.kernel.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        bpf@...r.kernel.org, bruce.richardson@...el.com,
        ciara.loftus@...el.com, Ye Xiaolong <xiaolong.ye@...el.com>,
        "Zhang, Qi Z" <qi.z.zhang@...el.com>,
        Maxim Mikityanskiy <maximmi@...lanox.com>,
        "Samudrala, Sridhar" <sridhar.samudrala@...el.com>,
        kevin.laatz@...el.com, ilias.apalodimas@...aro.org,
        Kiran <kiran.patil@...el.com>, axboe@...nel.dk,
        "Fijalkowski, Maciej" <maciej.fijalkowski@...el.com>,
        Maciej Fijalkowski <maciejromanfijalkowski@...il.com>,
        intel-wired-lan <intel-wired-lan@...ts.osuosl.org>
Subject: Re: [PATCH bpf-next 2/6] xsk: add support for need_wakeup flag in
 AF_XDP rings

On Thu, Jun 13, 2019 at 9:05 PM Jakub Kicinski
<jakub.kicinski@...ronome.com> wrote:
>
> On Thu, 13 Jun 2019 09:37:26 +0200, Magnus Karlsson wrote:
> >
> > -     if (!dev->netdev_ops->ndo_bpf ||
> > -         !dev->netdev_ops->ndo_xsk_async_xmit) {
> > +     if (!dev->netdev_ops->ndo_bpf || !dev->netdev_ops->ndo_xsk_wakeup) {
> >               err = -EOPNOTSUPP;
> >               goto err_unreg_umem;
> >       }
>
> > @@ -198,7 +258,8 @@ static int xsk_zc_xmit(struct sock *sk)
> >       struct xdp_sock *xs = xdp_sk(sk);
> >       struct net_device *dev = xs->dev;
> >
> > -     return dev->netdev_ops->ndo_xsk_async_xmit(dev, xs->queue_id);
> > +     return dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
> > +                                            XDP_WAKEUP_TX);
> >  }
> >
> >  static void xsk_destruct_skb(struct sk_buff *skb)
>
> Those two look like they should be in the previous patch?  Won't it
> break build?

You are correct. That should have been in patch 1. Will fix that in the v2.

Thanks: Magnus