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

[Eli Britstein]

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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