netdev - Re: MAX_SKB_FRAGS and GRO

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Message-Id: <1265656320.2092.51.camel@achroite.uk.solarflarecom.com>
Date:	Mon, 08 Feb 2010 19:12:00 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Rick Jones <rick.jones2@...com>
Cc:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Anton Blanchard <anton@...ba.org>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Duyck, Alexander H" <alexander.h.duyck@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"Ronciak, John" <john.ronciak@...el.com>,
	"divy@...lsio.com" <divy@...lsio.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: MAX_SKB_FRAGS and GRO

On Mon, 2010-02-08 at 09:53 -0800, Rick Jones wrote:
> >>First of all this isn't GRO, but RSC.  With GRO we impose extra
> >>restrictions on what packets can be merged while RSC is more
> >>permissive.
> > 
> > 
> > Herbert is right.  Just for clarity lets not call it "hardware GRO" but 
> > instead just call it RSC or hardware RSC (receive side coalescing)
> 
> I'll paint a stripe on the bikeshed and suggest something even more 
> explicit - if it is the hardware, how about HRC (Hardware Receive 
> Coalescing) or NRC (Nic Receive Coalescing).

The term 'Large Receive Offload' (LRO) has been around for a while;
what's wrong with that?  Qualify it with 'hardware' (HLRO) if necessary.

Any name involving 'coalescing' would easily be confused with interrupt
moderation, which ethtool calls coalescing.  Also, using anything close
to a proprietary name would only reward and encourage the marketing
geniuses who invent redundant and confusing terminology.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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