netdev - Re: [PATCH net-next v2 2/2] bpf: let bpf_warn_invalid_xdp

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Message-ID: <87wnkv9la4.fsf@toke.dk>
Date:   Fri, 26 Nov 2021 13:03:15 +0100
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, bpf@...r.kernel.org
Subject: Re: [PATCH net-next v2 2/2] bpf: let bpf_warn_invalid_xdp_action()
 report more info

Paolo Abeni <pabeni@...hat.com> writes:

> In non trivial scenarios, the action id alone is not sufficient
> to identify the program causing the warning. Before the previous
> patch, the generated stack-trace pointed out at least the
> involved device driver.
>
> Let's additionally include the program name and id, and the
> relevant device name.
>
> If the user needs additional infos, he can fetch them via a
> kernel probe, leveraging the arguments added here.
>
> v1 -> v2:
>  - do not include the device name for maps caller (Toke)
>
> rfc -> v1:
>  - do not print the attach type, print the program name
>
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>

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