[dpdk-dev] DPDK versions and SRIOV on XL710.

[Raju-dev grishma <rajugrishma@gmail.com>]

Hi I have a host and XL710 nic cards and created few VFs on these NIC. I
created two VMs on that host and assign one VF to each VM.

VM#1: It has RHEL 7.2 installed and I use DPDK version 2.2.0

SRIOV ports on this VM works OK. testmpd works.

The SRIOV interfaces comes up with below logs when I invoke testpmd.

EAL:  PCI device 0000:0b:00.0 on NUMA socket -1
EAL:   probe driver: 8086:154c rte_i40evf_pmd
EAL:   PCI memory mapped at 0x7fefdce00000
EAL:   PCI memory mapped at 0x7fefdce10000


VM#2: It has Ubuntu 16.04.2 and I use DPDK 17.05
SRIOV ports don't show up when I invoke testpmd.

EAL: PCI device 0000:03:00.0 on NUMA socket -1
EAL:   probe driver: 8086:154c net_i40e_vf
i40evf_init_vf(): init_adminq failed
i40evf_dev_init(): Init vf failed
EAL: Requested device 0000:03:00.0 cannot be used

I see one difference here. For the same NIC beneath, the DPDK picks
different driver on this VM. (net_i40e_vf as compared to rte_i40evf_pmd).
As I understand the dpdk.h file has this switching based on RTE version.

Question is why it fails on this VM that has different (later version) of
dpdk ?
Is there any settings I need to do on the guest OS (Ubuntu ) on VM#2?
could it be the NIC firmware that might be incompatible with driver used by
dpdk on VM#2?

Any pointers to move on ?

Thanks
Raju