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From: Andrii Nakryiko <andriin@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
	<daniel@iogearbox.net>
Cc: <andrii.nakryiko@gmail.com>, <kernel-team@fb.com>,
	Andrii Nakryiko <andriin@fb.com>
Subject: [PATCH bpf-next 0/3] Add generic and raw BTF parsing APIs to libbpf
Date: Sat, 1 Aug 2020 18:32:16 -0700
Message-ID: <20200802013219.864880-1-andriin@fb.com> (raw)

It's pretty common for applications to want to parse raw (binary) BTF data
from file, as opposed to parsing it from ELF sections. It's also pretty common
for tools to not care whether given file is ELF or raw BTF format. This patch
series exposes internal raw BTF parsing API and adds generic variant of BTF
parsing, which will efficiently determine the format of a given fail and will
parse BTF appropriately.

Patches #2 and #3 removes re-implementations of such APIs from bpftool and
resolve_btfids tools.

Andrii Nakryiko (3):
  libbpf: add btf__parse_raw() and generic btf__parse() APIs
  tools/bpftool: use libbpf's btf__parse() API for parsing BTF from file
  tools/resolve_btfids: use libbpf's btf__parse() API

 tools/bpf/bpftool/btf.c             |  54 +------------
 tools/bpf/resolve_btfids/.gitignore |   4 +
 tools/bpf/resolve_btfids/main.c     |  58 +-------------
 tools/lib/bpf/btf.c                 | 114 +++++++++++++++++++---------
 tools/lib/bpf/btf.h                 |   5 +-
 tools/lib/bpf/libbpf.map            |   2 +
 6 files changed, 89 insertions(+), 148 deletions(-)
 create mode 100644 tools/bpf/resolve_btfids/.gitignore

-- 
2.24.1


             reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-02  1:32 Andrii Nakryiko [this message]
2020-08-02  1:32 ` [PATCH bpf-next 1/3] libbpf: add btf__parse_raw() and generic btf__parse() APIs Andrii Nakryiko
2020-08-02  1:32 ` [PATCH bpf-next 2/3] tools/bpftool: use libbpf's btf__parse() API for parsing BTF from file Andrii Nakryiko
2020-08-02  1:32 ` [PATCH bpf-next 3/3] tools/resolve_btfids: use libbpf's btf__parse() API Andrii Nakryiko
2020-08-03 14:45 ` [PATCH bpf-next 0/3] Add generic and raw BTF parsing APIs to libbpf Daniel Borkmann
2020-08-06 17:39 ` Arnaldo Carvalho de Melo
2020-08-06 17:49   ` Andrii Nakryiko
2020-08-06 18:01     ` Alexei Starovoitov

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