From: Andrey Ignatov <rdna@fb.com>
To: <bpf@vger.kernel.org>
Cc: Andrey Ignatov <rdna@fb.com>, <ast@kernel.org>,
<daniel@iogearbox.net>, <kafai@fb.com>, <andriin@fb.com>,
<kernel-team@fb.com>
Subject: [PATCH v2 bpf-next 0/6] bpf: Support replacing cgroup-bpf program in MULTI mode
Date: Thu, 12 Dec 2019 15:30:47 -0800 [thread overview]
Message-ID: <cover.1576193131.git.rdna@fb.com> (raw)
v1->v2:
- move DECLARE_LIBBPF_OPTS from libbpf.h to bpf.h (patch 4);
- switch new libbpf API to OPTS framework;
- switch selftest to libbpf OPTS framework.
This patch set adds support for replacing cgroup-bpf programs attached with
BPF_F_ALLOW_MULTI flag so that any program in a list can be updated to a new
version without service interruption and order of programs can be preserved.
Please see patch 3 for details on the use-case and API changes.
Other patches:
Patch 1 is preliminary refactoring of __cgroup_bpf_attach to simplify it.
Patch 2 is minor cleanup of hierarchy_allows_attach.
Patch 4 moves DECLARE_LIBBPF_OPTS from libbpf.h to bpf.h
Patch 5 extends libbpf API to support new set of attach attributes.
Patch 6 adds selftest coverage for the new API.
Andrey Ignatov (6):
bpf: Simplify __cgroup_bpf_attach
bpf: Remove unused new_flags in hierarchy_allows_attach()
bpf: Support replacing cgroup-bpf program in MULTI mode
libbpf: Make DECLARE_LIBBPF_OPTS available in bpf.h
libbpf: Introduce bpf_prog_attach_xattr
selftests/bpf: Cover BPF_F_REPLACE in test_cgroup_attach
include/linux/bpf-cgroup.h | 4 +-
include/uapi/linux/bpf.h | 10 ++
kernel/bpf/cgroup.c | 97 ++++++++++---------
kernel/bpf/syscall.c | 4 +-
kernel/cgroup/cgroup.c | 5 +-
tools/include/uapi/linux/bpf.h | 10 ++
tools/lib/bpf/bpf.c | 21 +++-
tools/lib/bpf/bpf.h | 34 +++++++
tools/lib/bpf/libbpf.c | 1 -
tools/lib/bpf/libbpf.h | 24 +----
tools/lib/bpf/libbpf.map | 2 +
.../selftests/bpf/test_cgroup_attach.c | 62 +++++++++++-
12 files changed, 191 insertions(+), 83 deletions(-)
--
2.17.1
next reply other threads:[~2019-12-12 23:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 23:30 Andrey Ignatov [this message]
2019-12-12 23:30 ` [PATCH v2 bpf-next 1/6] bpf: Simplify __cgroup_bpf_attach Andrey Ignatov
2019-12-12 23:30 ` [PATCH v2 bpf-next 2/6] bpf: Remove unused new_flags in hierarchy_allows_attach() Andrey Ignatov
2019-12-12 23:30 ` [PATCH v2 bpf-next 3/6] bpf: Support replacing cgroup-bpf program in MULTI mode Andrey Ignatov
2019-12-12 23:30 ` [PATCH v2 bpf-next 4/6] libbpf: Make DECLARE_LIBBPF_OPTS available in bpf.h Andrey Ignatov
2019-12-13 6:53 ` Andrii Nakryiko
2019-12-12 23:30 ` [PATCH v2 bpf-next 5/6] libbpf: Introduce bpf_prog_attach_xattr Andrey Ignatov
2019-12-13 6:58 ` Andrii Nakryiko
2019-12-13 17:58 ` Andrey Ignatov
2019-12-13 20:42 ` Andrii Nakryiko
2019-12-12 23:30 ` [PATCH v2 bpf-next 6/6] selftests/bpf: Cover BPF_F_REPLACE in test_cgroup_attach Andrey Ignatov
2019-12-13 7:01 ` Andrii Nakryiko
2019-12-18 16:57 ` Andrey Ignatov
2019-12-18 17:24 ` Andrii Nakryiko
2019-12-18 17:37 ` Andrey Ignatov
2019-12-13 5:39 ` [PATCH v2 bpf-next 0/6] bpf: Support replacing cgroup-bpf program in MULTI mode Alexei Starovoitov
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