Re: [dpdk-users] Issue moving to DPDK 20.11 release

[Stephen Hemminger <stephen@networkplumber.org>]

On Wed, 26 May 2021 10:27:56 -0700
Sudharshan Krishnakumar <sudhar.ckrishna@gmail.com> wrote:

> Hi All,
> 
> Previously, I had DPDK-19.11 working fine on my server system, which runs
> on Ubuntu 18.04.
> Have a 4-Port 10 Gigabit Network card, with ports bound to use VFIO-PCI
> driver.
> But had to move to DPDK-20.11, and running into issues.
> 
> I installed on DPDK-20.11 on the server to /usr/local.
> 
> And did binding of ports using the dpdk-devbind script to use VFIO-PCI
> driver.
> 
> But when running DPDK sample application such as->
> dpdk-20.11/examples/packet_ordering,
> noticed DPDK is NOT able to detect any available ports.
> Getting error->  Cause: Error: no ethernet ports detected
> 
> Also when I pass parameter to block certain interfaces(Bus:Device.Function)
> on a NIC, EAL throws an
> Error-> EAL: failed to parse device "0000:31.00.0"
> 
> On the same system, using the same 10 Gigbit Network card, DPDK sample
> applications were
> working fine with older version of DPDK->19.11
> 
> Below, I have the output of commands:
> 
> ~/dpdk-20.11$ sudo ./usertools/dpdk-devbind.py --status
> 
> Network devices using DPDK-compatible driver
> ============================================
> 0000:31:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci
> unused=i40e
> 0000:31:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci
> unused=i40e
> 0000:31:00.2 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci
> unused=i40e
> 0000:31:00.3 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=vfio-pci
> unused=i40e
> 
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'I210 Gigabit Network Connection 1533' if=enp1s0 drv=igb
> unused=vfio-pci *Active*
> 0000:17:00.0 'Ethernet Controller 10G X550T 1563' if=ens6f0 drv=ixgbe
> unused=vfio-pci *Active*
> 0000:17:00.1 'Ethernet Controller 10G X550T 1563' if=ens6f1 drv=ixgbe
> unused=vfio-pci *Active*
> 
> 
> cat /proc/meminfo | grep -i huge
> AnonHugePages:      8192 kB
> ShmemHugePages:        0 kB
> HugePages_Total:    2048
> HugePages_Free:     2048
> HugePages_Rsvd:        0
> HugePages_Surp:        0
> Hugepagesize:       2048 kB
> 
> :~/dpdk-20.11/examples/packet_ordering$ sudo ./build/packet_ordering-shared
> -l 4-6 -n 2 --log-level 7 -m 1024
> --file-prefix packet_order -- -p 0xf --disable-reorder
> EAL: Detected 72 lcore(s)
> EAL: Detected 2 NUMA nodes
> EAL: Multi-process socket /var/run/dpdk/packet_order/mp_socket
> EAL: Selected IOVA mode 'VA'
> EAL: No available hugepages reported in hugepages-1048576kB
> EAL: Probing VFIO support...
> EAL: VFIO support initialized
> EAL: No legacy callbacks, legacy socket not created
> reorder disabled
> EAL: Error - exiting with code: 1
>   Cause: Error: no ethernet ports detected
> 
> ~/dpdk-20.11/examples/packet_ordering/build$ sudo ./packet_ordering -l 4-6
> -n 2 --proc-type auto --log-level 7 -m 1024
> --file-prefix packet_ordering -b 0000:31:00.0 -b 0000:31:00.1
> -b 0000:05:00.0 -b 0000:06:00.0 -b 0000:07:00.0  -b 0000:08:00.0 -- -p 0xf
> --disable-reorder
> EAL: Detected 72 lcore(s)
> EAL: Detected 2 NUMA nodes
> EAL: Auto-detected process type: PRIMARY
> EAL: failed to parse device "0000:31:00.0"
> EAL: Unable to parse device '0000:31:00.0'
> EAL: Error - exiting with code: 1
>   Cause: Invalid EAL arguments
> 
> 
> Please let me know, if you have any suggestions.
> 
> 
> Thanks,
> 
> Sudha

By default, DPDK is now dynamically linked and all the drivers are in shared libraries.
You need to pass the -d flag to indicate which library to load.