linux-kernel - Re: [RFC PATCH 0/5] net: low latency Ethernet device polling

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Message-ID: <512E5BBD.2040803@linux.intel.com>
Date:	Wed, 27 Feb 2013 21:17:17 +0200
From:	Eliezer Tamir <eliezer.tamir@...ux.intel.com>
To:	Tom Herbert <therbert@...gle.com>
CC:	Stephen Hemminger <stephen@...workplumber.org>,
	Eliezer Tamir <eliezer.tamir@...ux.jf.intel.com>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	Dave Miller <davem@...emloft.net>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	e1000-devel@...ts.sourceforge.net,
	Willem de Bruijn <willemb@...gle.com>,
	Andi Kleen <andi@...stfloor.org>, HPA <hpa@...or.com>,
	Eliezer Tamir <eliezer@...ir.org.il>
Subject: Re: [RFC PATCH 0/5] net: low latency Ethernet device polling

On 27/02/2013 20:47, Tom Herbert wrote:
> On Wed, Feb 27, 2013 at 10:13 AM, Stephen Hemminger
> <stephen@...workplumber.org> wrote:
>>
>> Have you looked at netmap? Seems like a cleaner user API for this.
>>
> That might be a bit orthogonal to this.  I believe the intent it to
> allow spin polling from socket calls without API change.

Exactly.

BTW, an interesting alternative to netmap would be to map a VF into 
userspace. (you would need to pre-allocate DMA memory regions and all of 
that RDMA-like stuff)
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