On 9/8/2011 8:00 PM, Roopa Prabhu wrote:
On 9/8/11 12:33 PM, "Michael S. Tsirkin"<mst@xxxxxxxxxx> wrote:
On Thu, Sep 08, 2011 at 12:23:56PM -0700, Roopa Prabhu wrote:
I think the main usecase for passthru mode is to assign a SR-IOV VF to
a single guest.
Yes and for the passthru usecase this patch should be enough to enable
filtering in hw (eventually like I indicated before I need to fix vlan
filtering too).
So with filtering in hw, and in sriov VF case, VFs
actually share a filtering table. How will that
be partitioned?
AFAIK, though it might maintain a single filter table space in hw, hw does
know which filter belongs to which VF. And the OS driver does not need to do
anything special. The VF driver exposes a VF netdev. And any uc/mc addresses
registered with a VF netdev are registered with the hw by the driver. And hw
will filter and send only pkts that the VF has expressed interest in.
Does your NIC & driver support adding multiple mac addresses to a VF?
I have tried a few other SR-IOV NICs sometime back and they didn't
support this feature.
Currently, we don't have an interface to add multiple mac addresses to a
netdev other than an
indirect way of creating a macvlan /if on top of it.
Thanks
Sridhar
No special filter partitioning in hw is required.
Thanks,
Roopa
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