selftests/bpf: Validate skeleton gen handles skipped fields

2021-05-14T00:23:57Z

Adjust static_linked selftests to test a mix of global and static variables and their handling of bpftool's skeleton generation code. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20210513233643.194711-1-andrii@kernel.org

selftests/bpf: Add map linking selftest

2021-04-23T21:05:27Z

Add selftest validating various aspects of statically linking BTF-defined map definitions. Legacy map definitions do not support extern resolution between object files. Some of the aspects validated: - correct resolution of extern maps against concrete map definitions; - extern maps can currently only specify map type and key/value size and/or type information; - weak concrete map definitions are resolved properly. Static map definitions are not yet supported by libbpf, so they are not explicitly tested, though manual testing showes that BPF linker handles them properly. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20210423181348.1801389-18-andrii@kernel.org

kernel/tools/testing/selftests/bpf/progs/linked_maps1.c, branch linux-6.2.y

selftests/bpf: Validate skeleton gen handles skipped fields

selftests/bpf: Add map linking selftest