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

[Sudharshan Krishnakumar <sudhar.ckrishna@gmail.com>]

Hi Stephen, Thanks for your reply, I was not aware of that.

I am using 4-Port Intel 10Gigbit network card-> X710 for 10GbE, and this is
currently bound to DPDK using VFIO-PCI driver, but the corresponding
kernel network driver appears to be-> i40e.

Currently I dont see shared libraries built under DPDK's->
build/driver/net/i40e directory.

Should I build those driver libraries, and then provide path to it,
something like this in EAL param -> -d build/drivers/net/i40e/libi40e.so

Please let me know.

Thanks,

Sudha
Regards,

Sudha

On Wed, May 26, 2021 at 10:53 AM Stephen Hemminger <
stephen@networkplumber.org> wrote:

> 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.
>