linux-kernel - [PATCH bpf-next v2 0/3] Add BPF_KFUNC macro for kfunc definitions

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Message-Id: <20230123171506.71995-1-void@manifault.com>
Date:   Mon, 23 Jan 2023 11:15:03 -0600
From:   David Vernet <void@...ifault.com>
To:     bpf@...r.kernel.org
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        martin.lau@...ux.dev, song@...nel.org, yhs@...a.com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, linux-kernel@...r.kernel.org,
        kernel-team@...a.com, memxor@...il.com
Subject: [PATCH bpf-next v2 0/3] Add BPF_KFUNC macro for kfunc definitions

v2 of the patchset [0]

[0]: https://lore.kernel.org/bpf/Y7kCsjBZ%2FFrsWW%2Fe@maniforge.lan/T/

Changelog:
----------
v1 -> v2:
- Wrap entire function signature in BPF_KFUNC macro instead of using
  __bpf_kfunc tag (Kumar)
- Update all kfunc definitions to use this macro.
- Update kfuncs.rst documentation to describe and illustrate the macro.
- Also clean up a few small parts of kfuncs.rst, e.g. some grammar, and
  in general making it a bit tighter.

David Vernet (3):
  bpf: Add BPF_KFUNC macro for defining kfuncs
  bpf: Document usage of the new BPF_KFUNC macro
  bpf: Use BPF_KFUNC macro at all kfunc definitions

 Documentation/bpf/kfuncs.rst                  | 93 ++++++++++---------
 include/linux/btf.h                           | 10 ++
 kernel/bpf/helpers.c                          | 44 ++++-----
 kernel/cgroup/rstat.c                         |  4 +-
 kernel/kexec_core.c                           |  3 +-
 kernel/trace/bpf_trace.c                      | 18 ++--
 net/bpf/test_run.c                            | 64 ++++++-------
 net/ipv4/tcp_bbr.c                            | 16 ++--
 net/ipv4/tcp_cong.c                           | 10 +-
 net/ipv4/tcp_cubic.c                          | 12 +--
 net/ipv4/tcp_dctcp.c                          | 12 +--
 net/netfilter/nf_conntrack_bpf.c              | 34 +++----
 net/netfilter/nf_nat_bpf.c                    | 12 +--
 net/xfrm/xfrm_interface_bpf.c                 | 14 +--
 .../selftests/bpf/bpf_testmod/bpf_testmod.c   |  3 +-
 15 files changed, 165 insertions(+), 184 deletions(-)

-- 
2.39.0