netdev - Re: [PATCH bpf-next] bpf: add SO_KEEPALIVE and related options to bpf

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Date:   Wed, 27 May 2020 10:02:21 -0700
From:   Martin KaFai Lau <kafai@...com>
To:     Dmitry Yakunin <zeil@...dex-team.ru>
CC:     <davem@...emloft.net>, <brakmo@...com>, <bpf@...r.kernel.org>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH bpf-next] bpf: add SO_KEEPALIVE and related options to
 bpf_setsockopt

On Wed, May 27, 2020 at 06:05:43PM +0300, Dmitry Yakunin wrote:
> This patch adds support of SO_KEEPALIVE flag and TCP related options
> to bpf_setsockopt() routine. This is helpful if we want to enable or tune
> TCP keepalive for applications which don't do it in the userspace code.
> In order to avoid copy-paste, common code from classic setsockopt was moved
> to auxiliary functions in the headers.
Thanks for refatoring some of the pieces.  I suspect some more can be done.
In the long run, I don't think this copy-and-paste is scalable.
For most of the options (integer value and do not need ns_capable()),
do_tcp_setsockopt() and sock_setsockopt() can be directly called with
some refactoring.


The change looks good.  For this patch,

Acked-by: Martin KaFai Lau <kafai@...com>