blaster4385/linux-IllusionX/tools/testing/selftests/bpf/prog_tests, branch v6.13

selftests/bpf: Test bpf_skb_change_tail() in TC ingress

2024-12-20T22:13:31Z

Similarly to the previous test, we also need a test case to cover positive offsets as well, TC is an excellent hook for this. Signed-off-by: Cong Wang Signed-off-by: Daniel Borkmann Tested-by: Zijian Zhang Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20241213034057.246437-5-xiyou.wangcong@gmail.com

selftests/bpf: Introduce socket_helpers.h for TC tests

2024-12-20T22:13:31Z

Pull socket helpers out of sockmap_helpers.h so that they can be reused for TC tests as well. This prepares for the next patch. Signed-off-by: Cong Wang Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20241213034057.246437-4-xiyou.wangcong@gmail.com

selftests/bpf: Add a BPF selftest for bpf_skb_change_tail()

2024-12-20T22:13:31Z

As requested by Daniel, we need to add a selftest to cover bpf_skb_change_tail() cases in skb_verdict. Here we test trimming, growing and error cases, and validate its expected return values and the expected sizes of the payload. Signed-off-by: Cong Wang Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20241213034057.246437-3-xiyou.wangcong@gmail.com

selftests/bpf: Add tests for raw_tp NULL args

2024-12-14T00:24:53Z

Add tests to ensure that arguments are correctly marked based on their specified positions, and whether they get marked correctly as maybe null. For modules, all tracepoint parameters should be marked PTR_MAYBE_NULL by default. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241213221929.3495062-4-memxor@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: extend changes_pkt_data with cases w/o subprograms

2024-12-12T19:38:36Z

Extend changes_pkt_data tests with test cases freplacing the main program that does not have subprograms. Try four combinations when both main program and replacement do and do not change packet data. Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20241212070711.427443-2-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: freplace tests for tracking of changes_packet_data

2024-12-10T18:24:57Z

Try different combinations of global functions replacement: - replace function that changes packet data with one that doesn't; - replace function that changes packet data with one that does; - replace function that doesn't change packet data with one that does; - replace function that doesn't change packet data with one that doesn't; Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20241210041100.1898468-7-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Extend test for sockmap update with same

2024-12-10T16:38:55Z

Verify that the sockmap link was not severed, and socket's entry is indeed removed from the map when the corresponding descriptor gets closed. Signed-off-by: Michal Luczaj Signed-off-by: Daniel Borkmann Reviewed-by: John Fastabend Link: https://lore.kernel.org/bpf/20241202-sockmap-replace-v1-2-1e88579e7bd5@rbox.co

selftests/bpf: Introduce __caps_unpriv annotation for tests

2024-12-04T17:19:50Z

Add a __caps_unpriv annotation so that tests requiring specific capabilities while dropping the rest can conveniently specify them during selftest declaration instead of munging with capabilities at runtime from the testing binary. While at it, let us convert test_verifier_mtu to use this new support instead. Since we do not want to include linux/capability.h, we only defined the four main capabilities BPF subsystem deals with in bpf_misc.h for use in tests. If the user passes a CAP_SYS_NICE or anything else that's not defined in the header, capability parsing code will return a warning. Also reject strtol returning 0. CAP_CHOWN = 0 but we'll never need to use it, and strtol doesn't errno on failed conversion. Fail the test in such a case. The original diff for this idea is available at link [0]. [0]: https://lore.kernel.org/bpf/a1e48f5d9ae133e19adc6adf27e19d585e06bab4.camel@gmail.com Signed-off-by: Eduard Zingerman [ Kartikeya: rebase on bpf-next, add warn to parse_caps, convert test_verifier_mtu ] Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20241204044757.1483141-4-memxor@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Check for PREEMPTION instead of PREEMPT

2024-11-26T16:55:01Z

CONFIG_PREEMPT is a preemtion model the so called "Low-Latency Desktop". A different preemption model is PREEMPT_RT the so called "Real-Time". Both implement preemption in kernel and set CONFIG_PREEMPTION. There is also the so called "LAZY PREEMPT" which the "Scheduler controlled preemption model". Here we have also preemption in the kernel the rules are slightly different. Therefore the testsuite should not check for CONFIG_PREEMPT (as one model) but for CONFIG_PREEMPTION to figure out if preemption in the kernel is possible. Signed-off-by: Sebastian Andrzej Siewior Link: https://lore.kernel.org/r/20241119161819.qvEcs-n_@linutronix.de Signed-off-by: Alexei Starovoitov

selftest/bpf: Add test for vsock removal from sockmap on close()

2024-11-25T22:19:14Z

Make sure the proto::close callback gets invoked on vsock release. Signed-off-by: Michal Luczaj Acked-by: Stefano Garzarella Link: https://lore.kernel.org/r/20241118-vsock-bpf-poll-close-v1-4-f1b9669cacdc@rbox.co Signed-off-by: Alexei Starovoitov Acked-by: John Fastabend