Re: [RFC PATCH v5 11/17] vsock/virtio: support MSG_ZEROCOPY for transport

[Stefano Garzarella]

On Sat, Jul 01, 2023 at 09:39:41AM +0300, Arseniy Krasnov wrote:
> Add 'msgzerocopy_allow()' callback for virtio transport.
>
> Signed-off-by: Arseniy Krasnov <AVKrasnov@xxxxxxxxxxxxxx>
> ---
> Changelog:
> v4 -> v5:
>  * Move 'msgzerocopy_allow' right after seqpacket callbacks.
>
> net/vmw_vsock/virtio_transport.c | 7 +++++++
> 1 file changed, 7 insertions(+)

Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>

> diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
> index 6cbb45bb12d2..8d3e9f441fa1 100644
> --- a/net/vmw_vsock/virtio_transport.c
> +++ b/net/vmw_vsock/virtio_transport.c
> @@ -441,6 +441,11 @@ static void virtio_vsock_rx_done(struct virtqueue *vq)
> 	queue_work(virtio_vsock_workqueue, &vsock->rx_work);
> }
>
> +static bool virtio_transport_msgzerocopy_allow(void)
> +{
> +	return true;
> +}
> +
> static bool virtio_transport_seqpacket_allow(u32 remote_cid);
>
> static struct virtio_transport virtio_transport = {
> @@ -474,6 +479,8 @@ static struct virtio_transport virtio_transport = {
> 		.seqpacket_allow          = virtio_transport_seqpacket_allow,
> 		.seqpacket_has_data       = virtio_transport_seqpacket_has_data,
>
> +		.msgzerocopy_allow        = virtio_transport_msgzerocopy_allow,
> +
> 		.notify_poll_in           = virtio_transport_notify_poll_in,
> 		.notify_poll_out          = virtio_transport_notify_poll_out,
> 		.notify_recv_init         = virtio_transport_notify_recv_init,
> --
> 2.25.1