Re: [PATCH rdma-next 00/15] Dual Port mlx5 IB Device for RoCE

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On 12/25/2017 3:24 AM, Or Gerlitz wrote:
> On Sun, Dec 24, 2017 at 11:47 PM, Or Gerlitz <gerlitz.or@xxxxxxxxx> wrote:
>> On Sun, Dec 24, 2017 at 2:57 PM, Leon Romanovsky wrote:
>
>>> SR-IOV devices follow the same pattern as the physical ones. VFs of a
>>> master port can bind VFs of slave ports, if available, and operate as dual port
>>> devices.
>
>> We still have two mlx5 EN devices, right?! and from libvirt point of view
>> business are just as usual,
>> a VM will be assigned with one VF from any of the core devices (master only,
>> slave only or both) and this will be an IB device with one port - correct?
> what happens if the admin provisions two VF devices for each of the
> following patterns:
>
> (slave, slave)
No IB devices for this pairing.

> (master, master)

2 IB devices, each showing 2 ports, but the slave port will be down.

> (master, slave) <-- this one you were targeting


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