kernel/linux.git/tools/testing/selftests/drivers/net/xdp.py, branch linux-7.1.y

selftests/drivers/net: Add an xdp test to xdp.py

2026-04-09T02:48:56+00:00

In "bpf: Disallow freplace on XDP with mismatched xdp_has_frags values" [1], this XDP test is suggested to add to xdp.py. 1. Verify the failure of updating frag-capable prog with non-frag-capable prog, when the frag-capable prog attaches to mtu=9k driver. The test has been verified against Mellanox CX6 and Intel 82599ES NICs. With dropping other tests, here is the test log. # ethtool -i eth0 driver: mlx5_core version: 6.19.0-061900-generic # NETIF=eth0 python3 xdp.py TAP version 13 1..1 ok 1 xdp.test_xdp_native_update_mb_to_sb # Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0 # ethtool -i eth0 driver: ixgbe version: 6.19.0-061900-generic # NETIF=eth0 python3 xdp.py TAP version 13 1..1 # CMD: ip link set dev eth0 xdpdrv obj /path/to/tools/testing/selftests/net/lib/xdp_dummy.bpf.o sec xdp.frags # EXIT: 2 # STDERR: RTNETLINK answers: Invalid argument ok 1 xdp.test_xdp_native_update_mb_to_sb # SKIP device does not support multi-buffer XDP # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:1 error:0 Signed-off-by: Leon Hwang Link: https://patch.msgid.link/20260406072655.368173-1-leon.huangfu@shopee.com Signed-off-by: Jakub Kicinski

selftests: drv-net: adjust to socat changes

2026-04-08T01:54:03+00:00

socat v1.8.1.0 now defaults to shut-null, it sends an extra 0-length UDP packet when sender disconnects. This breaks our tests which expect the exact packet sequence. Add shut-none which was the old default where necessary. Acked-by: Stanislav Fomichev Reviewed-by: Joe Damato Reviewed-by: Breno Leitao Link: https://patch.msgid.link/20260404230103.2719103-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: move common xdp.py functions into lib

2026-03-29T21:09:08+00:00

This moves a few functions which can be useful to other python programs that manipulate XDP programs. This also refactors xdp.py to use the refactored functions. Signed-off-by: Chris J Arges Link: https://patch.msgid.link/20260325201139.2501937-6-carges@cloudflare.com Signed-off-by: Jakub Kicinski

selftests: drv-net: xdp: use variants for qstat tests

2025-11-21T02:19:29+00:00

Use just-added ksft variants for XDP qstat tests. While at it correct the number of packets, we're sending 1000 packets now. Reviewed-by: Petr Machata Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20251120021024.2944527-5-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: xdp: make the XDP qstats tests less flaky

2025-11-15T01:45:38+00:00

The XDP qstats tests send 2k packets over a single socket. Looks like when netdev CI is busy running those tests in QEMU occasionally flakes. The target doesn't get to run at all before all 2000 packets are sent. Lower the number of packets to 1000 and reopen the socket every 50 packets, to give RSS a chance to spread the packets to multiple queues. For the netdev CI testing either lowering the count or using multiple sockets is enough, but let's do both for extra resiliency. Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20251113152703.3819756-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: xdp: add test for interface level qstats

2025-10-09T09:10:02+00:00

Send a non-trivial number of packets and make sure that they are counted correctly in qstats. Per qstats specification XDP is the first layer of the stack so we should see Rx and Tx counters go up for packets which went thru XDP. Reviewed-by: Simon Horman Signed-off-by: Jakub Kicinski Reviewed-by: Jacob Keller Link: https://patch.msgid.link/20251007232653.2099376-6-kuba@kernel.org Signed-off-by: Paolo Abeni

selftests: drv-net: xdp: rename netnl to ethnl

2025-10-09T09:10:02+00:00

Test uses "netnl" for the ethtool family which is quite confusing (one would expect netdev family would use this name). No functional changes. Reviewed-by: Simon Horman Signed-off-by: Jakub Kicinski Reviewed-by: Jacob Keller Link: https://patch.msgid.link/20251007232653.2099376-5-kuba@kernel.org Signed-off-by: Paolo Abeni

selftests: drv-net: xdp: make sure we're actually testing native XDP

2025-08-25T17:55:55+00:00

Kernel tries to be helpful and attach the XDP program in generic mode if the driver has no BPF ndo at all. Since the xdp.py tests all have "native" in their names this can be quite confusing. Force native / "drv" attachment. Note that netdevsim re-uses the generic handler as its "native" handler, so we'll maintain the test coverage of the generic mode that way. No need to test both explicitly, I reckon. Link: https://patch.msgid.link/20250822195645.1673390-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: drv-net: xdp: Validate single-buff XDP_TX in multi-buff mode

2025-08-22T14:46:27+00:00

Validate that drivers with multi-buff XDP programs properly reinitialize xdp_buff between packets. Signed-off-by: Dimitri Daskalakis Link: https://patch.msgid.link/20250821014023.1481662-4-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski

selftests: drv-net: xdp: Add a single-buffer XDP_TX test.

2025-08-22T14:46:27+00:00

Test single-buffer XDP_TX for packets with various payload sizes. Update the socat TX command to generate packets with 0 length payloads. Signed-off-by: Dimitri Daskalakis Link: https://patch.msgid.link/20250821014023.1481662-3-dimitri.daskalakis1@gmail.com Signed-off-by: Jakub Kicinski