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SubjectRe: [PATCH net-next V3] net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)
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From: Matt Wilson <msw@amzn.com>
Date: Thu, 14 Jul 2016 09:15:11 -0700

> On Thu, Jul 14, 2016 at 09:08:03AM -0700, Benjamin Poirier wrote:
>> On 2016/07/14 08:22, Matt Wilson wrote:
>> [...]
>> >
>> > Dave and Benjamin,
>> >
>> > Do you want to see the interrupt moderation extensions to ethtool and
>> > the sysfs nodes removed before this lands in net-next? Or should
>> > Netanel remove the sysfs bits until we can extend the ethtool
>> > interfaces to cover the parameters that ena uses?
>>
>> I couldn't say what's acceptable or not. A few other drivers (qlcnic,
>> sfc, ...) already have sysfs tunables. Maybe John, as the new ethtool
>> maintainer, can weight in too about the changes required to ethtool.
>
> We definitely want ethtool to handle all the settings, it's just a
> question of when. We also want to address and resolve all the great
> feedback so far, and since you originally raised the point about
> extending ethtool I wanted to see if you have any major objection.

If you add the sysfs stuff you're stuck with it forever, so I definitely
do not want to see that.

You guys should start simple, a basic driver that supports what is
possible with no core kernel changes or non-portable driver private
sysfs knobx. Only then should you think about adding new things.

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