netdev - Re: [PATCH net-next v2 2/5] tcp_cubic: remove one conditional from hystart

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Message-ID: <CADVnQy=1nYJVTC_Qh70oVSFPGSahwHoUNR17NOtRAiz7J38afQ@mail.gmail.com>
Date:   Thu, 26 Dec 2019 18:06:02 -0500
From:   Neal Cardwell <ncardwell@...gle.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>,
        Yuchung Cheng <ycheng@...gle.com>,
        Martin KaFai Lau <kafai@...com>
Subject: Re: [PATCH net-next v2 2/5] tcp_cubic: remove one conditional from hystart_update()

On Mon, Dec 23, 2019 at 3:28 PM Eric Dumazet <edumazet@...gle.com> wrote:
>
> If we initialize ca->curr_rtt to ~0U, we do not need to test
> for zero value in hystart_update()
>
> We only read ca->curr_rtt if at least HYSTART_MIN_SAMPLES have
> been processed, and thus ca->curr_rtt will have a sane value.
>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---

Acked-by: Neal Cardwell <ncardwell@...gle.com>

thanks,
neal