virtio-win

netkvm-wmi.cmd is a simple developer-oriented tool that allows access to NetKVM driver to query or control the behavior of the driver.

It is based on WMI interface of the network driver: WMI commands are converted to custom OID that the OS sends to the NetKVM driver.

In case of multiple NetKVM devices (multiple network adapters) each command of the netkvm-wmi.cmd is executed for all the devices.

The batch file requires administrative permissions, run it from administrator command line.

Examples of most useful commands are:

• query initial configuration

netkvm-wmi.cmd cfg

• query all run-time statistics:

netkvm-wmi.cmd stat

• query run-time RSS statistics

netkvm-wmi.cmd rss

• query run-time TX statistics

netkvm-wmi.cmd tx

• query run-time RX statistics

netkvm-wmi.cmd rx

• reset only TX

  RX

  RSS statistics

netkvm-wmi.cmd reset tx

netkvm-wmi.cmd reset rx

netkvm-wmi.cmd reset rss

• reset all the statistics

netkvm-wmi.cmd reset

• set logging level of the driver to 3 at runtime:

netkvm-wmi.cmd debug 3

For the list of available commands run netkvm-wmi.cmd without parameters.

To add new commands for development/testing purposes see the implementation of existing WMI commands:

• https://github.com/virtio-win/kvm-guest-drivers-windows/blob/master/NetKVM/Common/netkvm.mof
• vendor-specific commands in https://github.com/virtio-win/kvm-guest-drivers-windows/blob/master/NetKVM/wlh/ParaNdis6_Oid.cpp