From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: David Ahern <dsahern@gmail.com>,
Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>,
Stephen Hemminger <stephen@networkplumber.org>,
Alexei Starovoitov <ast@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, David Miller <davem@davemloft.net>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Networking <netdev@vger.kernel.org>, bpf <bpf@vger.kernel.org>
Subject: Re: [RFC bpf-next 0/5] Convert iproute2 to use libbpf (WIP)
Date: Wed, 05 Feb 2020 11:37:44 +0100 [thread overview]
Message-ID: <87imkle2vb.fsf@toke.dk> (raw)
In-Reply-To: <d5434db9-1899-776d-c4cd-918e2418175d@gmail.com>
David Ahern <dsahern@gmail.com> writes:
> On 2/4/20 3:35 PM, Toke Høiland-Jørgensen wrote:
>>
>>> Most likely, making iproute2 use libbpf statically is going to be
>>> challenging and I am not sure it is the right thing to do (unless the
>>> user is building a static version of iproute2 commands).
>>
>> Linking dynamically would imply a new dependency. I'm not necessarily
>> against that, but would it be acceptable from your PoV? And if so,
>> should we keep the current internal BPF code for when libbpf is not
>> available, or would it be acceptable to not be able to load BPF programs
>> if libbpf is not present (similar to how the libelf dependency works
>> today)?
>
> iproute2 recently gained the libmnl dependency for extack. Seems like
> libbpf falls into the similar category.
>
>>
>>> 2. git submodules can be a PITA to deal with (e.g., jumping between
>>> branches and versions), so there needs to be a good reason for it.
>>
>> Yes, totally with you on that. Another option could be to just copy the
>> files into the iproute2 tree, and update them the same way the kernel
>> headers are? Or maybe doing fancy things like this:
>> https://github.com/apenwarr/git-subtrac
>
> kernel uapi is a totally different reason to import the headers. bpf
> functionality is an add-on.
>
> I would like to see iproute2 work with libbpf. Given libbpf's current
> status and availability across OS'es that is going to be a challenge for
> a lot of OS'es which is why I suggested the HAVE_LIBBPF check falls back
> to existing code if libbpf is not installed.
Sure, can do.
-Toke
next prev parent reply other threads:[~2020-02-05 10:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 11:47 [RFC bpf-next 0/5] Convert iproute2 to use libbpf (WIP) Toke Høiland-Jørgensen
2019-08-20 11:47 ` [RFC bpf-next 1/5] libbpf: Add map definition struct fields from iproute2 Toke Høiland-Jørgensen
2019-08-20 11:47 ` [RFC bpf-next 2/5] libbpf: Add support for auto-pinning of maps with reuse on program load Toke Høiland-Jørgensen
2019-08-20 11:47 ` [RFC bpf-next 3/5] libbpf: Add support for specifying map pinning path via callback Toke Høiland-Jørgensen
2019-08-20 11:47 ` [RFC bpf-next 4/5] iproute2: Allow compiling against libbpf Toke Høiland-Jørgensen
2019-08-22 8:58 ` Daniel Borkmann
2019-08-22 10:43 ` Toke Høiland-Jørgensen
2019-08-22 11:45 ` Daniel Borkmann
2019-08-22 12:04 ` Toke Høiland-Jørgensen
2019-08-22 12:33 ` Daniel Borkmann
2019-08-22 13:38 ` Toke Høiland-Jørgensen
2019-08-22 13:45 ` Daniel Borkmann
2019-08-22 15:28 ` Toke Høiland-Jørgensen
2019-08-20 11:47 ` [RFC bpf-next 5/5] iproute2: Support loading XDP programs with libbpf Toke Høiland-Jørgensen
2019-08-21 19:26 ` [RFC bpf-next 0/5] Convert iproute2 to use libbpf (WIP) Alexei Starovoitov
2019-08-21 21:00 ` Toke Høiland-Jørgensen
2019-08-22 7:52 ` Andrii Nakryiko
2019-08-22 10:38 ` Toke Høiland-Jørgensen
2019-08-21 20:30 ` Andrii Nakryiko
2019-08-21 21:07 ` Toke Høiland-Jørgensen
2019-08-22 7:49 ` Andrii Nakryiko
2019-08-22 8:33 ` Daniel Borkmann
2019-08-22 11:48 ` Toke Høiland-Jørgensen
2019-08-22 11:49 ` Toke Høiland-Jørgensen
2019-08-23 6:31 ` Andrii Nakryiko
2019-08-23 11:29 ` Toke Høiland-Jørgensen
2019-08-28 20:40 ` Andrii Nakryiko
2020-02-03 7:29 ` Andrii Nakryiko
2020-02-03 19:34 ` Toke Høiland-Jørgensen
2020-02-04 0:56 ` Andrii Nakryiko
2020-02-04 1:46 ` David Ahern
2020-02-04 3:41 ` Andrii Nakryiko
2020-02-04 4:52 ` David Ahern
2020-02-04 5:00 ` Andrii Nakryiko
2020-02-04 8:25 ` Toke Høiland-Jørgensen
2020-02-04 18:47 ` Andrii Nakryiko
2020-02-04 19:19 ` Toke Høiland-Jørgensen
2020-02-04 19:29 ` Andrii Nakryiko
2020-02-04 21:56 ` Toke Høiland-Jørgensen
2020-02-04 22:12 ` David Ahern
2020-02-04 22:35 ` Toke Høiland-Jørgensen
2020-02-04 23:13 ` David Ahern
2020-02-05 10:37 ` Toke Høiland-Jørgensen [this message]
2020-02-04 8:27 ` Toke Høiland-Jørgensen
2019-08-23 10:27 ` Jesper Dangaard Brouer
2019-08-28 20:23 ` Andrii Nakryiko
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