netdev - Re: [PATCH bpf-next] bpf: add read/write access to skb->tstamp from tc clsact progs

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Message-ID: <CAF=yD-KPxE-zy_ky_9xtSMPW1bRCSceT=y_7PKt5CCdLxUMj6A@mail.gmail.com>
Date:   Tue, 20 Nov 2018 21:01:07 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     Vlad Dumitrescu <vladum@...gle.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Network Development <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>
Subject: Re: [PATCH bpf-next] bpf: add read/write access to skb->tstamp from
 tc clsact progs

On Tue, Nov 20, 2018 at 8:22 PM Eric Dumazet <eric.dumazet@...il.com> wrote:
>
>
>
> On 11/20/2018 04:18 PM, Vlad Dumitrescu wrote:
> > This could be used to rate limit egress traffic in concert with a qdisc
> > which supports Earliest Departure Time, such as FQ.
> >
> > Signed-off-by: Vlad Dumitrescu <vladum@...gle.com>
> > ---
> >  include/uapi/linux/bpf.h                    |  1 +
> >  net/core/filter.c                           | 26 +++++++++++++++++++++
> >  tools/include/uapi/linux/bpf.h              |  1 +
> >  tools/testing/selftests/bpf/test_verifier.c |  4 ++++
> >  4 files changed, 32 insertions(+)
> >
>
> Awesome, thanks Vlad
>
> Note that this also can be used to implement a delay (a la netem).
>
> Acked-by: Eric Dumazet <edumazet@...gle.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>