[PATCH net v4 2/7] um: vector: trim skbs before verifying the header

[Willem de Bruijn]

Michael S. Tsirkin wrote:
> The vector receive path over-allocates the skb and only trims it
> to the received length after the transport header is verified.
> 
> A follow up patch will complete the packet checksum in software within
> virtio_net_hdr_to_skb so we need the packet trimmed (otherwise the
> checksum would be computed incorrectly over the unreceived tail of the
> buffer).
> 
> Trim first, so the import sees the packet as it was received.
> 
> Signed-off-by: Michael S. Tsirkin <mst at redhat.com>

Reviewed-by: Willem de Bruijn <willemb at google.com>