selftests/bpf: add iterators tests

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Add various tests for open-coded iterators. Some of them excercise
various possible coding patterns in C, some go down to low-level
assembly for more control over various conditions, especially invalid
ones.

We also make use of bpf_for(), bpf_for_each(), bpf_repeat() macros in
some of these tests.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20230308184121.1165081-7-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Andrii Nakryiko 2023-03-08 10:41:19 -08:00 • committed by Alexei Starovoitov

parent 8c2b5e9050

commit 57400dcce6

5 changed files with 1325 additions and 0 deletions

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15

tools/testing/selftests/bpf/prog_tests/iters.c

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1

tools/testing/selftests/bpf/progs/bpf_misc.h

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720

tools/testing/selftests/bpf/progs/iters.c

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163

tools/testing/selftests/bpf/progs/iters_looping.c

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426

tools/testing/selftests/bpf/progs/iters_state_safety.c

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