From: Dmitrii Dolgov <9erthalion6@gmail.com>
To: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, yhs@fb.com, songliubraving@fb.com
Cc: Dmitrii Dolgov <9erthalion6@gmail.com>
Subject: [RFC PATCH bpf-next 0/2] bpf: bpf link iterator
Date: Fri, 22 Apr 2022 20:22:52 +0200 [thread overview]
Message-ID: <20220422182254.13693-1-9erthalion6@gmail.com> (raw)
Bpf links seem to be one of the important structures for which no
iterator is provided. Such iterator could be useful in those cases when
generic 'task/file' is not suitable or better performance is needed.
The implementation is mostly copied from prog iterator, and I would like
to get any high-level feedback about what needs to be different or have
to be taken into account. As a side note, I would also appreciate if
someone could point me out to some guide about writing selftests for bpf
subsystem -- for some unclear reason I couldn't compile the test from
this changeset, and was testing it only manually with a custom test
program.
Dmitrii Dolgov (2):
bpf: Add bpf_link iterator
selftests/bpf: Add bpf_link test
include/linux/bpf.h | 1 +
kernel/bpf/Makefile | 2 +-
kernel/bpf/link_iter.c | 107 ++++++++++++++++++
kernel/bpf/syscall.c | 19 ++++
.../selftests/bpf/prog_tests/bpf_iter.c | 15 +++
.../selftests/bpf/progs/bpf_iter_bpf_link.c | 18 +++
6 files changed, 161 insertions(+), 1 deletion(-)
create mode 100644 kernel/bpf/link_iter.c
create mode 100644 tools/testing/selftests/bpf/progs/bpf_iter_bpf_link.c
--
2.32.0
next reply other threads:[~2022-04-22 18:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-22 18:22 Dmitrii Dolgov [this message]
2022-04-22 18:22 ` [RFC PATCH bpf-next 1/2] bpf: Add bpf_link iterator Dmitrii Dolgov
2022-04-27 19:03 ` Andrii Nakryiko
2022-04-28 16:14 ` Yonghong Song
[not found] ` <CA+q6zcXkSBrmnUt3jS+zggqJjUFJQ2J_qUmA4HXtcFmYzYppMg@mail.gmail.com>
2022-04-28 21:02 ` Yonghong Song
2022-04-22 18:22 ` [RFC PATCH bpf-next 2/2] selftests/bpf: Add bpf link iter test Dmitrii Dolgov
2022-04-27 19:03 ` Andrii Nakryiko
2022-04-28 16:42 ` Yonghong Song
2022-04-27 19:04 ` [RFC PATCH bpf-next 0/2] bpf: bpf link iterator Andrii Nakryiko
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