[dpdk-users] using the basic l2fwd app

Rami Rosen roszenrami at gmail.com
Thu Oct 18 19:34:45 CEST 2018


Hi Kushal,
The output of dpdk-devbind -- status that you posted shows that there are
no ports that are bound to dpdk. This is the reason for the error you get.
You should try
insmod igb_uio.ko
( this kernel module is generated in the build process of DPDK)

And
dpdk-devbind.py -b igb_uio 0000:81:00.0

And likewise to the other port, 0000:81:00.1
And the launch the l2fwd app.


You can also use vfio-pci or uio_pci_generic for binding the device to
DPDK, look in the docs.

Regards,
Rami Rosen



בתאריך יום ה׳, 18 באוק׳ 2018, 17:24, מאת Kushal Gautam ‏<
kushal.gautam at gmail.com>:

> Hi:
>
> I am new to DPDK and my current use case with DPDK is minimal. Thus, I
> think the l2fwd type of sample application should suffice.
>
> Below is a portion of the output of `dpdk-devbind.py --status` command
> My DPDK version is 18.08, and I am using Ubuntu 16.04 (Linux Kernel version
> 4.15.12)
>
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'I350 Gigabit Network Connection 1521' if=eno1 drv=igb
> unused=igb_uio *Active*
> 0000:01:00.1 'I350 Gigabit Network Connection 1521' if=eno2 drv=igb
> unused=igb_uio
> 0000:81:00.0 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f0
> drv=i40e unused=igb_uio *Active*
> 0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' if=ens1f1
> drv=i40e unused=igb_uio *Active*
>
> I am connecting to this machine via 0000:01:00.0
>
> My requirement is to be able to send packets from 0000:81:00.0 to
> 0000:81:00.1 and get some measurements like tx and rx times.
>
> I tried to run the sample app as (as shown in docs):
>
> ./l2fwd -n 1 -c f -- -q 8 -p 0x3
>
> I have an error like this:
>
> EAL: Detected 16 lcore(s)
> EAL: Detected 2 NUMA nodes
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: No free hugepages reported in hugepages-1048576kB
> EAL: No free hugepages reported in hugepages-1048576kB
> EAL: No free hugepages reported in hugepages-1048576kB
> EAL: Probing VFIO support...
> EAL: PCI device 0000:01:00.0 on NUMA socket 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:01:00.1 on NUMA socket 0
> EAL:   probe driver: 8086:1521 net_e1000_igb
> EAL: PCI device 0000:81:00.0 on NUMA socket 1
> EAL:   probe driver: 8086:1572 net_i40e
> EAL: PCI device 0000:81:00.1 on NUMA socket 1
> EAL:   probe driver: 8086:1572 net_i40e
> MAC updating enabled
> EAL: Error - exiting with code: 1
>   Cause: No Ethernet ports - bye
>
> I did not understand the usage of port mask in this context.
>
> Some inputs on this would be very helpful.
>
> Regards,
> Kushal.
>


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