From mboxrd@z Thu Jan  1 00:00:00 1970
From: Neal Cardwell <ncardwell@google.com>
Subject: Re: Linux ECN Handling
Date: Tue, 21 Nov 2017 11:20:16 -0500
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Cc: Steve Ibanez <sibanez@stanford.edu>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Netdev <netdev@vger.kernel.org>, Florian Westphal <fw@strlen.de>,
        Mohammad Alizadeh <alizadeh@csail.mit.edu>,
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To: Yuchung Cheng <ycheng@google.com>
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On Tue, Nov 21, 2017 at 10:51 AM, Yuchung Cheng <ycheng@google.com> wrote:
> On Tue, Nov 21, 2017 at 7:01 AM, Neal Cardwell <ncardwell@google.com> wrote:
>>
>> The original motivation for only allowing TLP in the CA_Open state was
>> to be conservative and avoid having the TLP impose extra load on the
>> bottleneck when it may be congested. Plus if there are any SACKed
>> packets in the SACK scoreboard then there are other existing
>> mechanisms to do speedy loss recovery.
> Neal I like your idea of covering more states in TLP. but shouldn't we
> also fix the tso_deferral_logic to work better w/ PRR in CWR state, b/c
> it's a general transmission issue.

Yes, I agree it's also worthwhile to see if we can make PRR and TSO
deferral play well together. Sorry, I should have been more clear
about that.

neal