netdev - [PATCH bpf-next v2 0/3] bpftool: Switch to new versioning scheme (align on libbpf's)

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Date:   Tue,  8 Feb 2022 12:06:45 +0000
From:   Quentin Monnet <quentin@...valent.com>
To:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Cc:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        Quentin Monnet <quentin@...valent.com>
Subject: [PATCH bpf-next v2 0/3] bpftool: Switch to new versioning scheme (align on libbpf's)

Hi, this set aims at updating the way bpftool versions are numbered.
Instead of copying the version from the kernel (given that the sources for
the kernel and bpftool are shipped together), align it on libbpf's version
number, with a fixed offset (6) to avoid going backwards. Please refer to
the description of the third commit for details on the motivations.

The patchset also adds the number of the version of libbpf that was used to
compile to the output of "bpftool version". Bpftool makes such a heavy
usage of libbpf that it makes sense to indicate what version was used to
build it.

v2:
- Align on libbpf's version number instead of creating an independent
  versioning scheme.
- Use libbpf_version_string() to retrieve and display libbpf's version.
- Re-order patches (1 <-> 2).

Quentin Monnet (3):
  bpftool: Add libbpf's version number to "bpftool version" output
  libbpf: Add "libbpversion" make target to print version
  bpftool: Update versioning scheme, align on libbpf's version number

 .../bpf/bpftool/Documentation/common_options.rst  | 13 +++++++------
 tools/bpf/bpftool/Makefile                        | 15 +++++++++------
 tools/bpf/bpftool/main.c                          |  4 ++++
 tools/lib/bpf/Makefile                            |  3 +++
 4 files changed, 23 insertions(+), 12 deletions(-)

-- 
2.32.0