On Mon, Sep 13, 2021 at 06:47:31PM -0700, Andrii Nakryiko wrote:
> Refactor bpf_object__open() sequencing to perform BPF program type
> detection based on SEC() definitions before we get to relocations
> collection. This allows to have more information about BPF program by
> the time we get to, say, struct_ops relocation gathering. This,
> subsequently, simplifies struct_ops logic and removes the need to
> perform extra find_sec_def() resolution.
>
> With this patch libbpf will require all struct_ops BPF programs to be
> marked with SEC("struct_ops") or SEC("struct_ops/xxx") annotations.
> Real-world applications are already doing that through something like
> selftests's BPF_STRUCT_OPS() macro. This change streamlines libbpf's
> internal handling of SEC() definitions and is in the sprit of
> upcoming libbpf-1.0 section strictness changes ([0]).
>
> [0] https://github.com/libbpf/libbpf/wiki/Libbpf:-the-road-to-v1.0#stricter-and-more-uniform-bpf-program-section-name-sec-handling
>
> Cc: Martin KaFai Lau <kafai@xxxxxx>
> Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Acked-by: Martin KaFai Lau <kafai@xxxxxx>
