[dpdk-users] SRIOV with DPDK-PF: PMD: eth_ixgbevf_dev_init(): VF Initialization Failure

[Eli Britstein <eli.britstein@toganetworks.com>]

Hi all,



I want to use both PF and VF bound to igb_uio.

However, when doing so, VF init fails:



EAL: PCI device 0000:04:10.1 on NUMA socket 0

EAL:   probe driver: 8086:10ed rte_ixgbevf_pmd

PMD: eth_ixgbevf_dev_init(): VF Initialization Failure: -100

EAL: Error - exiting with code: 1

  Cause: Requested device 0000:04:10.1 cannot be used



The sequence I use it this:



Initial state:

- 04:00.1 is bound to Linux driver (ixgbe)

- no VFs configured



Step 1: configure a VF

echo 1 > /sys/bus/pci/devices/0000:04:00.1/sriov_numvfs



Step 2: set VF's MAC address

ip link set dev enp4s0f1 vf 0 mac 00:bb:dd:04:00:00



Step 3: bind the VF to igb_uio



Step 4: execute L2FWD

./dpdk/examples/l2fwd/build/l2fwd -c 1 -n 1 -w 0000:04:00.1 -- -T 0 -p 1 Works as expected



Step 5: bind the PF to igb_uio



Step 6: execute L2FWD again

./dpdk/examples/l2fwd/build/l2fwd -c 1 -n 1 -w 0000:04:00.1 -- -T 0 -p 1



---------------------------

FAILURE

---------------------------



I tried several DPDK versions (1.7.1, 2.0.0, 2.2.0, 16.07). All fail in eth_ixgbevf_dev_init.

Usually the error code is -100, but in some cases also I saw -15.



Please advise

Thanks,

Eli



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