[USRP-users] Getting DPDK to work

Carmichael, Ryan Ryan.Carmichael at dynetics.com
Fri Jul 24 13:38:49 EDT 2020

FYI the problem ended up being that the UHD configuration file requires an underscore with [use_dpdk=1] (instead of a dash, like everything else in the file uses), and also that dpdk-io-cpu=x is required instead of dpdk-lcore to initialize the adapters. Thanks for the help.

Of course now rx_samples_to_file segfaults in rte_eth_rx_queue_setup, but at least it's forward movement.

-          Ryan

From: USRP-users <usrp-users-bounces at lists.ettus.com> On Behalf Of Marcus D. Leech via USRP-users
Sent: Friday, July 24, 2020 9:18 AM
To: usrp-users at lists.ettus.com
Subject: [EXTERNAL] Re: [USRP-users] Getting DPDK to work

On 07/24/2020 09:44 AM, Carmichael, Ryan via USRP-users wrote:
I've got an X310, UHD 3.15.LTS (compiled with DPDK support), DPDK 17.11 on Red Hat. I feel like things are 95% of the way there, but I can't get UHD to work with DPDK.

Long story short, I'm getting the error "EAL: Please set IPv4 address for port 0 before opening socket". I wonder if it's not reading my uhd conf file.

Before dpdk-devbind, the X310 has two IP addresses that are pingable ( and 40.2) from my NICs:

enp13s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 9001
        inet  netmask  broadcast
        ether aa:bb:cc:dd:ee:01  txqueuelen 1000  (Ethernet)

enp13s0f1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 9001
        inet  netmask  broadcast
        ether aa:bb:cc:dd:ee:02  txqueuelen 1000  (Ethernet)

After running dpdk-devbind:

Network devices using DPDK-compatible driver
0000:0d:00.0 '82599ES 10-Gigabit SFI/SFP+ Network Connection 10fb' drv=igb_uio unused=vfio-pci,uio_pci_generic
0000:0d:00.1 '82599ES 10-Gigabit SFI/SFP+ Network Connection 10fb' drv=igb_uio unused=vfio-pci,uio_pci_generic

I have a configuration file:


dpdk-lcore = 1
dpdk-ipv4 =

dpdk-lcore = 0
dpdk-ipv4 =

Check for syntax errors in the conf file?

I can't remember whether spaces are allowed around "=" in those config files or not.


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