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Date:   Wed, 27 May 2020 23:08:24 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Jakub Sitnicki <jakub@...udflare.com>
Cc:     bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        kernel-team@...udflare.com
Subject: Re: [PATCH bpf-next 8/8] selftests/bpf: Add tests for attaching
 bpf_link to netns

On Wed, May 27, 2020 at 12:16 PM Jakub Sitnicki <jakub@...udflare.com> wrote:
>
> Extend the existing test case for flow dissector attaching to cover:
>
>  - link creation,
>  - link updates,
>  - link info querying,
>  - mixing links with direct prog attachment.
>
> Signed-off-by: Jakub Sitnicki <jakub@...udflare.com>
> ---

You are not using bpf_program__attach_netns() at all. Would be nice to
actually use higher-level API here...

Also... what's up with people using CHECK_FAIL + perror instead of
CHECK? Is CHECK being avoided for some reason or people are just not
aware of it (which is strange, because CHECK was there before
CHECK_FAIL)?

>  .../bpf/prog_tests/flow_dissector_reattach.c  | 500 +++++++++++++++++-
>  1 file changed, 471 insertions(+), 29 deletions(-)
>

[...]

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