linux-kernel - Re: [PATCH net v4 2/2] bpf: selftests: send packet to devmap redirect XDP

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Message-ID: <874j6mee02.fsf@toke.dk>
Date: Wed, 11 Sep 2024 11:27:57 +0200
From: Toke Høiland-Jørgensen <toke@...hat.com>
To: Florian Kauer <florian.kauer@...utronix.de>, Alexei Starovoitov
 <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, "David S.
 Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Jesper
 Dangaard Brouer <hawk@...nel.org>, John Fastabend
 <john.fastabend@...il.com>, Andrii Nakryiko <andrii@...nel.org>, Martin
 KaFai Lau <martin.lau@...ux.dev>, Eduard Zingerman <eddyz87@...il.com>,
 Song Liu <song@...nel.org>, Yonghong Song <yonghong.song@...ux.dev>, KP
 Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>, Hao Luo
 <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>, David Ahern
 <dsahern@...nel.org>, Hangbin Liu <liuhangbin@...il.com>, Mykola Lysenko
 <mykolal@...com>, Shuah Khan <shuah@...nel.org>
Cc: netdev@...r.kernel.org, bpf@...r.kernel.org,
 linux-kernel@...r.kernel.org, Jesper Dangaard Brouer <brouer@...hat.com>,
 linux-kselftest@...r.kernel.org, Florian Kauer
 <florian.kauer@...utronix.de>
Subject: Re: [PATCH net v4 2/2] bpf: selftests: send packet to devmap
 redirect XDP

Florian Kauer <florian.kauer@...utronix.de> writes:

> The current xdp_devmap_attach test attaches a program
> that redirects to another program via devmap.
>
> It is, however, never executed, so do that to catch
> any bugs that might occur during execution.
>
> Also, execute the same for a veth pair so that we
> also cover the non-generic path.
>
> Warning: Running this without the bugfix in this series
> will likely crash your system.
>
> Signed-off-by: Florian Kauer <florian.kauer@...utronix.de>

Reviewed-by: Toke Høiland-Jørgensen <toke@...hat.com>