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From: Andrii Nakryiko <andrii.nakryiko@gmail.com>
To: Jiri Benc <jbenc@redhat.com>
Cc: Yonghong Song <yhs@fb.com>,
	Jakub Kicinski <jakub.kicinski@netronome.com>,
	David Ahern <dsahern@gmail.com>, Andrii Nakryiko <andriin@fb.com>,
	bpf <bpf@vger.kernel.org>, Networking <netdev@vger.kernel.org>,
	Alexei Starovoitov <ast@fb.com>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Kernel Team <Kernel-team@fb.com>
Subject: Re: [PATCH v3 bpf-next 5/7] libbpf: move bpf_{helpers,endian,tracing}.h into libbpf
Date: Tue, 8 Oct 2019 11:02:16 -0700	[thread overview]
Message-ID: <CAEf4BzbUVVThaLAwepit9V1voe7CBMPiK1rjkq-i-JXbFOnw2Q@mail.gmail.com> (raw)
In-Reply-To: <20191008173709.07da56ef@redhat.com>

On Tue, Oct 8, 2019 at 8:37 AM Jiri Benc <jbenc@redhat.com> wrote:
>
> On Fri, 4 Oct 2019 18:37:44 +0000, Yonghong Song wrote:
> > distro can package bpf/btf uapi headers into libbpf package.
> > Users linking with libbpf.a/libbpf.so can use bpf/btf.h with include
> > path pointing to libbpf dev package include directory.
> > Could this work?
>
> I don't think it would. Distros have often a policy against bundling
> files that are available from one package (in this case, kernel-headers
> or similar) in a different package (libbpf).
>
> The correct way is making the libbpf package depend on a particular
> version of kernel-headers (or newer). As I said, I don't see a problem
> here. It's not a special situation, it's just usual dependencies.
>

We ended up switching to auto-generating BPF helpers from UAPI headers
w/ hardcoding BPF_FUNC_xxx values in bpf_helpers.h. So there is now no
dependency on any specific kernel version there.

>  Jiri

  reply	other threads:[~2019-10-08 18:02 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-03 21:28 [PATCH v3 bpf-next 0/7] Move bpf_helpers and add BPF_CORE_READ macros Andrii Nakryiko
2019-10-03 21:28 ` [PATCH v3 bpf-next 1/7] selftests/bpf: undo GCC-specific bpf_helpers.h changes Andrii Nakryiko
2019-10-04  7:00   ` Toke Høiland-Jørgensen
2019-10-03 21:28 ` [PATCH v3 bpf-next 2/7] selftests/bpf: samples/bpf: split off legacy stuff from bpf_helpers.h Andrii Nakryiko
2019-10-04  7:00   ` Toke Høiland-Jørgensen
2019-10-03 21:28 ` [PATCH v3 bpf-next 3/7] selftests/bpf: adjust CO-RE reloc tests for new bpf_core_read() macro Andrii Nakryiko
2019-10-03 21:28 ` [PATCH v3 bpf-next 4/7] selftests/bpf: split off tracing-only helpers into bpf_tracing.h Andrii Nakryiko
2019-10-04  7:01   ` Toke Høiland-Jørgensen
2019-10-03 21:28 ` [PATCH v3 bpf-next 5/7] libbpf: move bpf_{helpers,endian,tracing}.h into libbpf Andrii Nakryiko
2019-10-04  7:01   ` Toke Høiland-Jørgensen
2019-10-04 14:47   ` David Ahern
2019-10-04 15:27     ` Andrii Nakryiko
2019-10-04 15:44       ` David Ahern
2019-10-04 16:00         ` Andrii Nakryiko
2019-10-04 18:30           ` Jakub Kicinski
2019-10-04 18:37             ` Yonghong Song
2019-10-04 21:04               ` Jakub Kicinski
2019-10-08 15:37               ` Jiri Benc
2019-10-08 18:02                 ` Andrii Nakryiko [this message]
2019-10-04 20:21             ` Andrii Nakryiko
2019-10-04 21:06               ` Daniel Borkmann
2019-10-04 21:58                 ` Daniel Borkmann
2019-10-04 22:47                   ` Andrii Nakryiko
2019-10-04 22:51                     ` Andrii Nakryiko
2019-10-04 23:25                       ` Andrii Nakryiko
2019-10-08 15:29             ` Jiri Benc
2019-10-03 21:28 ` [PATCH v3 bpf-next 6/7] libbpf: add BPF_CORE_READ/BPF_CORE_READ_INTO helpers Andrii Nakryiko
2019-10-03 21:28 ` [PATCH v3 bpf-next 7/7] selftests/bpf: add BPF_CORE_READ and BPF_CORE_READ_STR_INTO macro tests Andrii Nakryiko

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