kernel/tools/testing/selftests/net/bpf_offload.py, branch linux-rolling-stable

selftests: net: bpf_offload: print loaded programs on mismatch

2025-08-21T02:28:03Z

The test sometimes fails due to an unexpected number of loaded programs. e.g FAIL: 2 BPF programs loaded, expected 1 File "/usr/libexec/kselftests/net/./bpf_offload.py", line 940, in progs = bpftool_prog_list(expected=1) File "/usr/libexec/kselftests/net/./bpf_offload.py", line 187, in bpftool_prog_list fail(True, "%d BPF programs loaded, expected %d" % File "/usr/libexec/kselftests/net/./bpf_offload.py", line 89, in fail tb = "".join(traceback.extract_stack().format()) However, the logs do not show which programs were actually loaded, making it difficult to debug the failure. Add printing of the loaded programs when a mismatch is detected to help troubleshoot such errors. The list is printed on a new line to avoid breaking the current log format. Signed-off-by: Hangbin Liu Link: https://patch.msgid.link/20250819073348.387972-1-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski

selftests: net: bpf_offload: add 'libbpf_global' to ignored maps

2025-03-06T23:41:37Z

After installing pahole on the CI image we have a new map created by libbpf. Ignore it otherwise we see: Exception: Time out waiting for map counts to stabilize want 2, have 3 Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250304233204.1139251-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: fix error message in bpf_offload

2025-03-06T23:41:37Z

We hit a following exception on timeout, nmaps is never set: Test bpftool bound info reporting (own ns)... Traceback (most recent call last): File "/home/virtme/testing-1/tools/testing/selftests/net/./bpf_offload.py", line 1128, in check_dev_info(False, "") File "/home/virtme/testing-1/tools/testing/selftests/net/./bpf_offload.py", line 583, in check_dev_info maps = bpftool_map_list_wait(expected=2, ns=ns) File "/home/virtme/testing-1/tools/testing/selftests/net/./bpf_offload.py", line 215, in bpftool_map_list_wait raise Exception("Time out waiting for map counts to stabilize want %d, have %d" % (expected, nmaps)) NameError: name 'nmaps' is not defined Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250304233204.1139251-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests/net: Add test for loading devbound XDP program in generic mode

2025-01-30T03:04:23Z

Add a test to bpf_offload.py for loading a devbound XDP program in generic mode, checking that it fails correctly. Signed-off-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20250127131344.238147-2-toke@redhat.com Signed-off-by: Jakub Kicinski

selftests: net: add more info to error in bpf_offload

2024-11-19T02:51:41Z

bpf_offload caught a spurious warning in TC recently, but the error message did not provide enough information to know what the problem is: FAIL: Found 'netdevsim' in command output, leaky extack? Add the extack to the output: FAIL: Unexpected command output, leaky extack? ('netdevsim', 'Warning: Filter with specified priority/protocol not found.') Acked-by: Stanislav Fomichev Signed-off-by: Jakub Kicinski

selftests: net: reuse common code in bpf_offload

2024-04-10T21:03:12Z

net/lib/py/nsim.py already contains the most useful parts of the netdevsim wrapper classes. Reuse them. Acked-by: Stanislav Fomichev Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20240409031549.3531084-5-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: declare section names for bpf_offload

2024-04-10T21:03:12Z

Non-ancient ip (iproute2-5.15.0, libbpf 0.7.0) refuses to load the sample with maps because we don't generate BTF: libbpf: BTF is required, but is missing or corrupted. ERROR: opening BPF object file failed Enable BTF by adding -g to clang flags. With that done neither of the programs load: libbpf: prog 'func': error relocating .BTF.ext function info: -22 libbpf: prog 'func': failed to relocate calls: -22 libbpf: failed to load object 'ksft-net-drv/net/sample_ret0.bpf.o' Andrii explains that this is because we don't specify section names for the code. Add the section names, too. Acked-by: Alexei Starovoitov Acked-by: Stanislav Fomichev Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20240409031549.3531084-4-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: bpf_offload: wait for maps

2024-04-10T21:03:12Z

Maps are removed asynchronously. Either there's a bigger delay now or the test has always been flaky. Retry waiting in the loop. Acked-by: Stanislav Fomichev Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20240409031549.3531084-3-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: move bpf-offload test from bpf to net

2024-04-10T21:03:12Z

We're building more python tests on the netdev side, and some of the classes from the venerable BPF offload tests can be reused. Acked-by: Stanislav Fomichev Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/r/20240409031549.3531084-2-kuba@kernel.org Signed-off-by: Jakub Kicinski