netdev - Re: [PATCH bpf-next v3 1/5] bpf: Support chain calling multiple BPF programs after each other

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Message-ID: <87o8yqjqg0.fsf@toke.dk>
Date:   Wed, 09 Oct 2019 10:03:43 +0200
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Marek Majkowski <marek@...udflare.com>,
        Lorenz Bauer <lmb@...udflare.com>,
        Alan Maguire <alan.maguire@...cle.com>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH bpf-next v3 1/5] bpf: Support chain calling multiple BPF programs after each other

Alexei Starovoitov <alexei.starovoitov@...il.com> writes:

> Please implement proper indirect calls and jumps.

I am still not convinced this will actually solve our problem; but OK, I
can give it a shot.

However, I don't actually have a clear picture of what exactly is
missing to add this support. Could you please provide a pointer or two?

-Toke