netdev - Re: [PATCH bpf-next 07/10] bpf: Add helpers to query conntrack info

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Message-ID: <87ilxsf2pa.fsf@toke.dk>
Date:   Wed, 20 Oct 2021 11:46:57 +0200
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Maxim Mikityanskiy <maximmi@...dia.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Brendan Jackman <jackmanb@...gle.com>,
        Florent Revest <revest@...omium.org>,
        Joe Stringer <joe@...ium.io>,
        Lorenz Bauer <lmb@...udflare.com>,
        Tariq Toukan <tariqt@...dia.com>, netdev@...r.kernel.org,
        bpf@...r.kernel.org, clang-built-linux@...glegroups.com,
        Maxim Mikityanskiy <maximmi@...dia.com>
Subject: Re: [PATCH bpf-next 07/10] bpf: Add helpers to query conntrack info


> +#if IS_BUILTIN(CONFIG_NF_CONNTRACK)

This makes the helpers all but useless on distro kernels; I don't think
this is the right way to go about it. As Kumar mentioned, he's working
on an approach using kfuncs in modules; maybe you can collaborate on
that?

-Toke