On Mon, Apr 04 2022, Laura Loghin <> wrote:
> Added a new field to the vsock device config space that
> is limiting the size of the packet payload. This way
> the driver is not allowed to allocate huge buffers, and
> potentially fill up the entire memory.
> Also defined a new feature bit for this, VIRTIO_VSOCK_F_SIZE_MAX,
> in order to keep backwards compatibility.
>
> Signed-off-by: Laura Loghin <>
> ---
> virtio-vsock.tex | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
(...)
> +\devicenormative{\subsubsection}{Device configuration layout}{Device Types / Socket Device / Device configuration layout}
> +
> +The device MUST set \field{data_max_size} to between 0 and 65536 inclusive, if
> +it offers VIRTIO_VSOCK_F_SIZE_MAX.
> +
> +The device MUST NOT modify \field{data_max_size} once it has been set.
I'm not sure this is the best way to frame this. Maybe
"The device MUST NOT change the value exposed through
\field{data_max_size}."
?
