Currently the default RX capacity setting is 256 (the same as QEMU default). However if we configure QEMU to run with bigger RX queue size (QEMU allows up to 1024) this requires to configure also the RX capacity in the driver to the same value. I would be good to make the driver to adapt automatically to the RX queue size of the device. This is not just to change the default to 1024, as there are some TODO-s in the driver to make such a change to work completely correctly.

Upstream pull request:

https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1016

Acceptance criteria:

1. use "netkvm-wmi.cmd cfg" command (build 247) to verify that the behavior of the driver is as expected with different sizes of the RX queue (device virtio-net-pci,...,rx_queue_size=1024) and different driver settings (Advanced:Init.MaxRxBuffers) .
2. HCK as usual