netdev - Re: [PATCH net-next v6 10/10] virtio_net: xsk: rx: free the unused xsk buffer

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Date: Fri, 28 Jun 2024 10:19:47 +0800
From: Jason Wang <jasowang@...hat.com>
To: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Cc: netdev@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>, 
	Eugenio Pérez <eperezma@...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.dev, 
	bpf@...r.kernel.org
Subject: Re: [PATCH net-next v6 10/10] virtio_net: xsk: rx: free the unused
 xsk buffer

On Tue, Jun 18, 2024 at 3:57 PM Xuan Zhuo <xuanzhuo@...ux.alibaba.com> wrote:
>
> Release the xsk buffer, when the queue is releasing or the queue is
> resizing.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
> ---
>  drivers/net/virtio_net.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index cfa106aa8039..33695b86bd99 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -967,6 +967,11 @@ static void virtnet_rq_unmap_free_buf(struct virtqueue *vq, void *buf)
>
>         rq = &vi->rq[i];
>
> +       if (rq->xsk.pool) {
> +               xsk_buff_free((struct xdp_buff *)buf);
> +               return;
> +       }

It seems it needs to be squashed into previous patches?

Thanks


> +
>         if (!vi->big_packets || vi->mergeable_rx_bufs)
>                 virtnet_rq_unmap(rq, buf, 0);
>
> --
> 2.32.0.3.g01195cf9f
>