[PATCH v2 bpf-next 0/4] libbpf: deprecate legacy BPF map definitions

[Andrii Nakryiko <andrii@kernel.org>]

Officially deprecate legacy BPF map definitions in libbpf. They've been slated
for deprecation for a while in favor of more powerful BTF-defined map
definitions and this patch set adds warnings and a way to enforce this in
libbpf through LIBBPF_STRICT_MAP_DEFINITIONS strict mode flag.

Selftests are fixed up and updated, BPF documentation is updated, bpftool's
strict mode usage is adjusted to avoid breaking users unnecessarily.

v1->v2:
  - replace missed bpf_map_def case in Documentation/bpf/btf.rst (Alexei).

Andrii Nakryiko (4):
  selftests/bpf: fail build on compilation warning
  selftests/bpf: convert remaining legacy map definitions
  libbpf: deprecate legacy BPF map definitions
  docs/bpf: update BPF map definition example

 Documentation/bpf/btf.rst                     | 32 ++++++++-----------
 tools/bpf/bpftool/main.c                      |  9 +++++-
 tools/lib/bpf/bpf_helpers.h                   |  2 +-
 tools/lib/bpf/libbpf.c                        |  8 +++++
 tools/lib/bpf/libbpf_legacy.h                 |  5 +++
 tools/testing/selftests/bpf/Makefile          |  4 +--
 tools/testing/selftests/bpf/prog_tests/btf.c  |  4 +++
 .../bpf/progs/freplace_cls_redirect.c         | 12 +++----
 .../selftests/bpf/progs/sample_map_ret0.c     | 24 +++++++-------
 .../selftests/bpf/progs/test_btf_haskv.c      |  3 ++
 .../selftests/bpf/progs/test_btf_newkv.c      |  3 ++
 .../selftests/bpf/progs/test_btf_nokv.c       | 12 +++----
 .../bpf/progs/test_skb_cgroup_id_kern.c       | 12 +++----
 .../testing/selftests/bpf/progs/test_tc_edt.c | 12 +++----
 .../bpf/progs/test_tcp_check_syncookie_kern.c | 12 +++----
 15 files changed, 90 insertions(+), 64 deletions(-)

-- 
2.30.2