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Message-ID: <20210120025729-mutt-send-email-mst@kernel.org>
Date: Wed, 20 Jan 2021 02:57:34 -0500
From: "Michael S. Tsirkin" <mst@...hat.com>
To: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Cc: Alexander Lobakin <alobakin@...me>,
Jason Wang <jasowang@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, bjorn.topel@...el.com,
Magnus Karlsson <magnus.karlsson@...el.com>,
Jonathan Lemon <jonathan.lemon@...il.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
KP Singh <kpsingh@...nel.org>,
virtualization@...ts.linux-foundation.org, bpf@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 2/3] virtio-net: support IFF_TX_SKB_NO_LINEAR
On Wed, Jan 20, 2021 at 03:49:10PM +0800, Xuan Zhuo wrote:
> Virtio net supports the case where the skb linear space is empty, so add
> priv_flags.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@...hat.com>
> ---
> drivers/net/virtio_net.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index ba8e637..f2ff6c3 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -2972,7 +2972,8 @@ static int virtnet_probe(struct virtio_device *vdev)
> return -ENOMEM;
>
> /* Set up network device as normal. */
> - dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE;
> + dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE |
> + IFF_TX_SKB_NO_LINEAR;
> dev->netdev_ops = &virtnet_netdev;
> dev->features = NETIF_F_HIGHDMA;
>
> --
> 1.8.3.1
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