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

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Message-ID: <27a06a7d79fef3446ae1167612808a2af09922be.camel@redhat.com>
Date:   Tue, 07 Mar 2023 10:53:41 +0100
From:   Paolo Abeni <pabeni@...hat.com>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        "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>,
        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

Hi,
On Tue, 2023-03-07 at 09:49 +0800, Xuan Zhuo wrote:
> 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.

Could you please re-post including a suitable 'Fixes' tag? That would
address stable, too. Additionally you could rename check_sq_full() in
patch 1, perhaps 'check_disable_sq_full()' would do.

You can retain the already collected tags.

Thanks!

Paolo