Re: New commands to configure IOV features

On 07/20/2012 07:42 PM, Chris Friesen wrote:

On 07/20/2012 02:01 PM, Ben Hutchings wrote:

quoted

On Fri, 2012-07-20 at 13:29 -0600, Chris Friesen wrote:

quoted

quoted

Once the device exists, then domain-specific APIs would be used to
configure it the same way that they would configure a physical device.

To an extent, but not entirely.

Currently, the assigned MAC address and (optional) VLAN tag for each
networking VF are configured via the PF net device (though this is done
though the rtnetlink API rather than ethtool).

I actually have a use-case where the guest needs to be able to modify the MAC addresses of network devices that are actually VFs.

The guest is bonding the network devices together, so the bonding driver in the guest expects to be able to set all the slaves to the same MAC address.

As I read the ixgbe driver, this should be possible as long as the host hasn't explicitly set the MAC address of the VF. Is that correct?

Chris

Interesting tug of war: hypervisors will want to set the macaddrs for security reasons,
                        some guests may want to set macaddr for (valid?) config reasons.