Re: [PATCH v4 5/5] vsock/virtio: change the maximum packet size allowed

From: Stefano Garzarella
Date: Thu Jul 18 2019 - 03:52:53 EST


On Wed, Jul 17, 2019 at 5:00 PM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote:
>
> On Wed, Jul 17, 2019 at 01:30:30PM +0200, Stefano Garzarella wrote:
> > Since now we are able to split packets, we can avoid limiting
> > their sizes to VIRTIO_VSOCK_DEFAULT_RX_BUF_SIZE.
> > Instead, we can use VIRTIO_VSOCK_MAX_PKT_BUF_SIZE as the max
> > packet size.
> >
> > Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
>
>
> OK so this is kind of like GSO where we are passing
> 64K packets to the vsock and then split at the
> low level.

Exactly, something like that in the Host->Guest path, instead in the
Guest->Host we use the entire 64K packet.

Thanks,
Stefano