netdev - Re: [PATCH net-next] selftests: net: Add cross-compilation support for BPF programs

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Message-ID: <87edtwb6e8.fsf@all.your.base.are.belong.to.us>
Date:   Mon, 21 Nov 2022 17:48:31 +0100
From:   Björn Töpel <bjorn@...nel.org>
To:     Anders Roxell <anders.roxell@...aro.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        Björn Töpel 
        <bjorn@...osinc.com>, Lina Wang <lina.wang@...iatek.com>,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next] selftests: net: Add cross-compilation support
 for BPF programs

Anders Roxell <anders.roxell@...aro.org> writes:

> On Sat, 19 Nov 2022 at 18:19, Björn Töpel <bjorn@...nel.org> wrote:
[...]
>> Now that BPF builds are starting to show up in more places
>> (selftests/net, and soon selftests/hid), maybe it would be cleaner to
>> move parts of the BPF builds to lib.mk?
>
> Yes, since its in tc-testing too.
> Maybe thats what we should do already now?

Ok, so there's three BPF builds, in addition to selftests/bpf. Do you
suggest moving (cross-compiled) libbpf builds (for bpf_helpers_defs.h
generation) and some kind of clang BPF build-rule to lib.mk? Or would
you like more things there, like resolve_btfids?

I guess this patch could go in regardless, and fix the build *now*, and
do a lib.mk thing as a follow-up?


Björn