ethtool is used to query and control network device driver and hardware settings, particularly for wired Ethernet devices.
devname is the name of the network device on which ethtool should operate.
ethtool with a single argument specifying the device name prints current settings of the specified device.
msglvl N msglvl type on|off ...
The precise meanings of these type flags differ between drivers.
For all fields that allow both a value and a mask to be specified, the mask may be specified immediately after the value using the m keyword, or separately using the field name keyword with -mask appended, e.g. src-mask.
flag on|off Sets the state of the named private flag.
Not supported (in part or whole) on all network drivers.
ethtool was written by David Miller.
Modifications by Jeff Garzik, Tim Hockin, Jakub Jelinek, Andre Majorel, Eli Kupermann, Scott Feldman, Andi Kleen, Alexander Duyck, Sucheta Chakraborty, Jesse Brandeburg, Ben Hutchings.
ethtool is available from http://www.kernel.org/pub/software/network/ethtool/ 8s�8s�