netdev - Re: [Patch bpf-next 01/19] bpf: rename BPF_STREAM_PARSER to BPF_SOCK

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Date:   Mon, 8 Feb 2021 17:45:11 -0800
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     John Fastabend <john.fastabend@...il.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>, duanxiongchun@...edance.com,
        Dongdong Wang <wangdongdong.6@...edance.com>,
        jiang.wang@...edance.com, Cong Wang <cong.wang@...edance.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jakub Sitnicki <jakub@...udflare.com>,
        Lorenz Bauer <lmb@...udflare.com>
Subject: Re: [Patch bpf-next 01/19] bpf: rename BPF_STREAM_PARSER to BPF_SOCK_MAP

On Mon, Feb 8, 2021 at 12:21 AM John Fastabend <john.fastabend@...il.com> wrote:
>
> Cong Wang wrote:
> > From: Cong Wang <cong.wang@...edance.com>
> >
> > Before we add non-TCP support, it is necessary to rename
> > BPF_STREAM_PARSER as it will be no longer specific to TCP,
> > and it does not have to be a parser either.
> >
> > This patch renames BPF_STREAM_PARSER to BPF_SOCK_MAP, so
> > that sock_map.c hopefully would be protocol-independent.
> >
> > Also, improve its Kconfig description to avoid confusion.
> >
> > Cc: John Fastabend <john.fastabend@...il.com>
> > Cc: Daniel Borkmann <daniel@...earbox.net>
> > Cc: Jakub Sitnicki <jakub@...udflare.com>
> > Cc: Lorenz Bauer <lmb@...udflare.com>
> > Signed-off-by: Cong Wang <cong.wang@...edance.com>
> > ---
>
> The BPF_STREAM_PARSER config was originally added because we need
> the STREAM_PARSER define and wanted a way to get the 'depends on'
> lines in Kconfig correct.
>
> Rather than rename this, lets reduce its scope to just the set
> of actions that need the STREAM_PARSER, this should be just the
> stream parser programs. We probably should have done this sooner,
> but doing it now will be fine.

This makes sense, but we still need a Kconfig for the rest sockmap
code, right? At least for the dependency on NET_SOCK_MSG?

>
> I can probably draft a quick patch tomorrow if above is not clear.
> It can go into bpf-next outside this series as well to reduce
> the 19 patches a bit.

I can handle it in my next update too, like all other feedbacks.

Thanks.