netdev - Re: [RFC PATCH v2 net-next 3/3] tcp: add NV congestion control

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Date:	Wed, 22 Jul 2015 07:27:00 -0400
From:	Neal Cardwell <ncardwell@...gle.com>
To:	Yuchung Cheng <ycheng@...gle.com>
Cc:	Lawrence Brakmo <brakmo@...com>, netdev <netdev@...r.kernel.org>,
	Kernel Team <kernel-team@...com>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [RFC PATCH v2 net-next 3/3] tcp: add NV congestion control

On Wed, Jul 22, 2015 at 2:50 AM, Yuchung Cheng <ycheng@...gle.com> wrote:
> On Tue, Jul 21, 2015 at 9:21 PM, Lawrence Brakmo <brakmo@...com> wrote:
>> This is a request for comments.
>>
>> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
>> NV was presented at 2010's LPC (slides). It is a delayed based
>> congestion avoidance for the data center. This version has been tested
>> within a 10G rack where the HW RTTs are 20-50us.
>>
>> A description of TCP-NV, including implementation and experimental
>> results, can be found at:
>> http://www.brakmo.org/networking/tcp-nv/TCPNV.html
>>
>> The current version includes many module parameters to support
>> experimentation with the parameters.
...
>> +extern int sysctl_tcp_nv_enable;

The sysctl_tcp_nv_enable only seems to be used within the NV module.
Can it be a module parameter instead of sysctl?

neal
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