[dpdk-users] I350 dpdk-devbind virtual interfaces vfio_pci and what physical interface drivers??

[".." <hyperhead@gmail.com>]

Hi

Im new to dpdk and am getting it setup with a KVM environment.

I have a I350 2x1GBe SR-IOV card and have setup dpdk so I can use the
drivers supplied with a KVM environment on Centos 7.

I can load the vfio-pci driver for the VF nics. However at at 500Mbits/s
UDP traffic in the VM, I start to get dropped packets in the rx_fifo queue
in the hypervisor (there is only one VM per nic running)

These "physical" nics hosting the VF nics are using the igb driver

0000:07:10.0 'I350 Ethernet Controller Virtual Function 1520' drv=vfio-pci
unused=igbvf,igb_uio
0000:07:10.1 'I350 Ethernet Controller Virtual Function 1520' drv=vfio-pci
unused=igbvf,igb_uio
0000:07:00.0 'I350 Gigabit Network Connection 1521' if=ens2f0 drv=igb
unused=igb_uio,vfio-pci
0000:07:00.1 'I350 Gigabit Network Connection 1521' if=ens2f1 drv=igb
unused=igb_uio,vfio-pci

Is there a better driver I can use on the parent nic?, as it seems this is
where the problems are arising.  I cant bind the vfio-pci nic to the parent
nic, but that seems obvious as the vfio-pci seem to be for VF nics only??

/Thanks