[dpdk-dev] xdp_umem_configure(): Failed to create umem

[Deepak Gowda <deepak.dt06@gmail.com>]

Hi All,

I'm fairly new to xdp, i'm trying to run the testpmd with af_xdp. I have
checked all the prerequisites for af_xdp.
I see testpmd exiting with the following error,
./testpmd -c 0x3 -n 4 --vdev net_af_xdp0,iface=tap0 -- -i
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: Probing VFIO support...
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 1af4:1000 net_virtio
EAL: PCI device 0000:00:0a.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 1af4:1000 net_virtio
Interactive-mode selected
testpmd: create a new mbuf pool <mbuf_pool_socket_0>: n=155456, size=2176,
socket=0
testpmd: preferred mempool ops selected: ring_mp_mc

Warning! port-topology=paired and odd forward ports number, the last port
will pair with itself.

Configuring Port 0 (socket 0)
*xdp_umem_configure(): Failed to create umemeth_rx_queue_setup(): Failed to
configure xdp socket*
Fail to configure port 0 rx queues
EAL: Error - exiting with code: 1
  Cause: Start ports failed

Seems like xsk_umem__create() is failing, could this be a kernel issue?
Before going further i wanted to confirm that my setup is fine and that
there are no obvious mistakes, here is my setup details:
debian buster kvm machine
4.19.0-9-amd64 kernel
iface argument is a tap interface
dpdk-stable-19.11.2

Any insight is appreciated.
Thanks!