On 23/10/2024 07:07, Xiaohua Wang wrote:
Hi,
dpdk-testpmd with AF_XDP PMD can't work on p1p1 (macvlan) interface,
but can work on eth0 (veth) interface.
And is there a method to enable AF_XDP PMD to work in XDP SKB mode? Or
add one option to set “SKB mode” in AF_XDP Options
<https://doc.dpdk.org/guides/nics/af_xdp.html> ?
[MT] I believe this is what the `force_copy=1` option does. But I'm not
sure this will fix your issue as the log below says that it does try SKB
mode. It could be a limitation of the Kernel driver.
===============can't work on p1p1 (macvlan) interface====================
5p8j4:/tmp # ./dpdk-testpmd --log-level=pmd.net.af_xdp:debug --no-huge
--no-pci --no-telemetry --vdev net_af_xdp,iface=p1p1 --
--total-num-mbufs 8192
EAL: Detected CPU lcores: 40
EAL: Detected NUMA nodes: 1
EAL: Static memory layout is selected, amount of reserved memory can
be adjusted with -m or --socket-mem
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
rte_pmd_af_xdp_probe(): Initializing pmd_af_xdp for net_af_xdp
init_internals(): Zero copy between umem and mbuf enabled.
testpmd: create a new mbuf pool <mb_pool_0>: n=8192, 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)
eth_rx_queue_setup(): Set up rx queue, rx queue id: 0, xsk queue id: 0
libbpf: elf: skipping unrecognized data section(8) .xdp_run_config
libbpf: elf: skipping unrecognized data section(9) xdp_metadata
libbpf: elf: skipping unrecognized data section(7) xdp_metadata
libbpf: prog 'xdp_pass': BPF program load failed: Invalid argument
libbpf: prog 'xdp_pass': failed to load: -22
libbpf: failed to load object '/usr/lib64/bpf/xdp-dispatcher.o'
libbpf: elf: skipping unrecognized data section(7) xdp_metadata
libbpf: elf: skipping unrecognized data section(7) xdp_metadata
libbpf: elf: skipping unrecognized data section(7) xdp_metadata
libbpf: Kernel error message: Underlying driver does not support XDP
in native mode
libxdp: Error attaching XDP program to ifindex 5: Operation not supported
libxdp: XDP mode not supported; try using SKB mode
[MT] Here it attempts SKB mode, then fails
xsk_configure(): Failed to create xsk socket.
eth_rx_queue_setup(): Failed to configure xdp socket
Fail to configure port 0 rx queues
rte_pmd_af_xdp_remove(): Removing AF_XDP ethdev on numa socket 0
eth_dev_close(): Closing AF_XDP ethdev on numa socket 0
Port 0 is closed
EAL: Error - exiting with code: 1
Cause: Start ports failed
EAL: Already called cleanup
