netdev - Re: [PATCH net 0/2] add checking sq is full inside xdp xmit

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Date:   Tue, 7 Mar 2023 09:49:30 +0800
From:   Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     netdev@...r.kernel.org, Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        virtualization@...ts.linux-foundation.org, bpf@...r.kernel.org
Subject: Re: [PATCH net 0/2] add checking sq is full inside xdp xmit

On Mon, 6 Mar 2023 12:58:22 -0500, "Michael S. Tsirkin" <mst@...hat.com> wrote:
> On Mon, Mar 06, 2023 at 12:15:33PM +0800, Xuan Zhuo wrote:
> > If the queue of xdp xmit is not an independent queue, then when the xdp
> > xmit used all the desc, the xmit from the __dev_queue_xmit() may encounter
> > the following error.
> >
> > net ens4: Unexpected TXQ (0) queue failure: -28
> >
> > This patch adds a check whether sq is full in XDP Xmit.
> >
> > Thanks.
>
> Acked-by: Michael S. Tsirkin <mst@...hat.com>
>
> needed for stable?


Yes i think.

Thanks.


>
> > Xuan Zhuo (2):
> >   virtio_net: separate the logic of checking whether sq is full
> >   virtio_net: add checking sq is full inside xdp xmit
> >
> >  drivers/net/virtio_net.c | 78 ++++++++++++++++++++++++----------------
> >  1 file changed, 47 insertions(+), 31 deletions(-)
> >
> > --
> > 2.32.0.3.g01195cf9f
>