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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 v2 bpf-next 0/3] Auto-generate list of BPF helpers
Date: Sat, 5 Oct 2019 20:20:05 -0700	[thread overview]
Message-ID: <20191006032008.2571427-1-andriin@fb.com> (raw)

This patch set adds ability to auto-generate list of BPF helper definitions.
It relies on existing scripts/bpf_helpers_doc.py and include/uapi/linux/bpf.h
having a well-defined set of comments. bpf_helper_defs.h contains all BPF
helper signatures which stay in sync with latest bpf.h UAPI. This
auto-generated header is included from bpf_helpers.h, while all previously
hand-written BPF helper definitions are simultaneously removed in patch #3.
The end result is less manually maintained and redundant boilerplate code,
while also more consistent and well-documented set of BPF helpers. Generated
helper definitions are completely independent from a specific bpf.h on
a target system, because it doesn't use BPF_FUNC_xxx enums.

v1->v2:
- add bpf_helper_defs.h to .gitignore and `make clean` (Alexei);

Andrii Nakryiko (3):
  uapi/bpf: fix helper docs
  scripts/bpf: teach bpf_helpers_doc.py to dump BPF helper definitions
  libbpf: auto-generate list of BPF helper definitions

 include/uapi/linux/bpf.h       |  32 ++--
 scripts/bpf_helpers_doc.py     | 155 ++++++++++++++++++-
 tools/include/uapi/linux/bpf.h |  32 ++--
 tools/lib/bpf/.gitignore       |   1 +
 tools/lib/bpf/Makefile         |  10 +-
 tools/lib/bpf/bpf_helpers.h    | 264 +--------------------------------
 6 files changed, 196 insertions(+), 298 deletions(-)

-- 
2.17.1


             reply	other threads:[~2019-10-06  3:20 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-06  3:20 Andrii Nakryiko [this message]
2019-10-06  3:20 ` [PATCH v2 bpf-next 1/3] uapi/bpf: fix helper docs Andrii Nakryiko
     [not found] ` <20191006032008.2571427-3-andriin@fb.com>
2019-10-06  4:21   ` [PATCH v2 bpf-next 2/3] scripts/bpf: teach bpf_helpers_doc.py to dump BPF helper definitions Alexei Starovoitov
2019-10-06  5:33     ` Andrii Nakryiko

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