netdev - Re: [PATCH net] net: tcp: don't allocate fast clones for fastopen SYN

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Message-ID: <CANn89i+6jnMVuNqAi8pYXCCXTXgVJfWJDtuXFtVFRBO-0sz4dw@mail.gmail.com>
Date:   Fri, 5 Mar 2021 07:38:11 +0100
From:   Eric Dumazet <edumazet@...gle.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Jonathan Lemon <jonathan.lemon@...il.com>,
        Alexander Duyck <alexander.duyck@...il.com>,
        David Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        kernel-team <kernel-team@...com>, Neil Spring <ntspring@...com>,
        Yuchung Cheng <ycheng@...gle.com>
Subject: Re: [PATCH net] net: tcp: don't allocate fast clones for fastopen SYN

On Fri, Mar 5, 2021 at 6:33 AM Eric Dumazet <edumazet@...gle.com> wrote:

> Actually this might be a good thing : We now resend the whole data in
> a TSO packet, now
> we call the standard rtx queue mechanism, instead of sending only one MSS
>
> I will look at other test failures today (Friday) before submitting a
> patch series officially.
>

Well, there is also this part to sort out.

WARN_ON(tp->retrans_out != 0);

in tcp_fastretrans_alert()