[dpdk-users] Skeleton basicfwd sample app hits error [net_mlx5: DV flow is not supported] on Mellanox VF in VM

["Das, Surajit" <Surajit.Das@commscope.com>]

Hi DPDK experts,

I am hitting an error when running the sample basicfwd app on Mellanox VFs.
The error is same with l2fwd, l2fwd-crypto and ipsec-secgw apps.

I have pushed the Mellanox VFs in a VM by PCI-Passthrough.
Pasting the command, output and the relevant version info below.
If anyone else has faced this, please do share what could fix this.


Command and Output:
[root@dpdk-dev-1 build]#  ./basicfwd -l 1 -n 4 --pci-whitelist 0000:00:0d.0 --pci-whitelist 0000:00:0e.0  --log-level 8
EAL: Detected 8 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: No available hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: PCI device 0000:00:0d.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 15b3:1014 net_mlx5
net_mlx5: DV flow is not supported
net_mlx5: probe of PCI device 0000:00:0d.0 aborted after encountering an error: Operation not supported
EAL: Requested device 0000:00:0d.0 cannot be used
EAL: PCI device 0000:00:0e.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 15b3:1014 net_mlx5
net_mlx5: DV flow is not supported
net_mlx5: probe of PCI device 0000:00:0e.0 aborted after encountering an error: Operation not supported
EAL: Requested device 0000:00:0e.0 cannot be used
EAL: Error - exiting with code: 1
  Cause: Error: number of ports must be even
[root@dpdk-dev-1 build]#

Versions:
3.10.0-1062.el7.x86_64
CentOS Linux release 7.7.1908 (Core)
dpdk-stable-19.11.6

NIC detail:
00:0c.0 Ethernet controller: Intel Corporation Ethernet Virtual Function 700 Series (rev 09)
        Subsystem: Super Micro Computer Inc Device 0000
        Physical Slot: 12
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Region 0: Memory at fe220000 (64-bit, prefetchable) [size=128K]
        Region 3: Memory at fe244000 (64-bit, prefetchable) [size=16K]
        Capabilities: [70] MSI-X: Enable+ Count=5 Masked-
                Vector table: BAR=3 offset=00000000
                PBA: BAR=3 offset=00002000
        Capabilities: [a0] Express (v2) Endpoint, MSI 00
                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
                        ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ SlotPowerLimit 0.000W
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
                        RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- FLReset-
                        MaxPayload 128 bytes, MaxReadReq 128 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
                LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
                        ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
                LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range AB, TimeoutDis+, LTR-, OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
                         EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
        Kernel driver in use: iavf
        Kernel modules: iavf

Regards,
Surajit