selftests/bpf: Test bpf_{get,set}_retval behavior with cgroup/sockopt

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The tests checks how different ways of interacting with the helpers
(getting retval, setting EUNATCH, EISCONN, and legacy reject
returning 0 without setting retval), produce different results in
both the setsockopt syscall and the retval returned by the helper.
A few more tests verify the interaction between the retval of the
helper and the retval in getsockopt context.

Signed-off-by: YiFei Zhu <zhuyifei@google.com>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/43ec60d679ae3f4f6fd2460559c28b63cb93cd12.1639619851.git.zhuyifei@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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YiFei Zhu 2021-12-16 02:04:28 +00:00 • committed by Alexei Starovoitov

parent b44123b4a3

commit b8bff6f890

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481

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

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45

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

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52

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

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