tree 85e7df4c53f34e48a47c9e9c410f1da9c432165a
parent e14ef4bf011192b61b48c4f3a35b3041140073ff
author Andrii Nakryiko <andrii@kernel.org> 1616096426 -0700
committer Alexei Starovoitov <ast@kernel.org> 1616109262 -0700

libbpf: Generalize BTF and BTF.ext type ID and strings iteration

Extract and generalize the logic to iterate BTF type ID and string offset
fields within BTF types and .BTF.ext data. Expose this internally in libbpf
for re-use by bpf_linker.

Additionally, complete strings deduplication handling for BTF.ext (e.g., CO-RE
access strings), which was previously missing. There previously was no
case of deduplicating .BTF.ext data, but bpf_linker is going to use it.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210318194036.3521577-3-andrii@kernel.org