[ovs-discuss] Combined Kernel and DPDK with Same Interface

[Gregory Rose]

On 4/8/2020 5:50 AM, Lazuardi Nasution wrote:
> Hi,
> 
> I'm looking for best practice or experience on running OVS-DPDK and other
> kernel based applications with the same interface especially with MLX5 PMD.
> As long as I know, one of both must use VF and the other use PF
> since kernel and DPDK cannot bind to same interface. Which one of following
> is possible and better?
> 
> 1. OVS-DPDK bind to PF and kernel bind to VF
> 2.  OVS-DPDK bind to VF and kernel bind to PF
> 
> If it is better (or the only possible) to use No. 2, what version of OVS
> and DPDK support VF binding? Should I bind to kernel created VF directly or
> it's representor?

If you use option 2 then the Linux kernel has PCI-e primitives that 
support the allocation of the VF resources, including number of VFs, 
their permissions and settings of any offload capabilities that the VFs 
might have.

- Greg