netdev - Re: [PATCH net-next] tcp: avoid spurious loopback retransmit

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Message-ID: <CANn89i+vBRxKFy_Bb2_tKTh1ttLanZj99UNZcmjSQ=oq4-j6og@mail.gmail.com>
Date:   Wed, 9 Jun 2021 09:03:14 +0200
From:   Eric Dumazet <edumazet@...gle.com>
To:     "dust.li" <dust.li@...ux.alibaba.com>
Cc:     David Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Tony Lu <tonylu@...ux.alibaba.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH net-next] tcp: avoid spurious loopback retransmit

On Wed, Jun 9, 2021 at 2:25 AM dust.li <dust.li@...ux.alibaba.com> wrote:
>

> Normal RTO and fast retransmits are rarely triggerred.
> But for TLP timers, it is easy since its timeout is usally only 2ms.
>

OK, by definition rtx timers can fire too early, so I think we will
leave the code as it is.
(ie not try to do special things for 'special' interfaces like loopback)

We want to be generic as much as possible.

Thanks