netdev - Re: TSO trimming question

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Message-ID: <20071220140012.GA22495@gondor.apana.org.au>
Date:	Thu, 20 Dec 2007 22:00:12 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	ilpo.jarvinen@...sinki.fi, netdev@...r.kernel.org
Subject: Re: TSO trimming question

On Thu, Dec 20, 2007 at 04:00:37AM -0800, David Miller wrote:
>
> In the most ideal sense, tcp_window_allows() should probably
> be changed to only return MSS multiples.
> 
> Unfortunately this would add an expensive modulo operation,
> however I think it would elimiate this problem case.

Well you only have to divide in the unlikely case of us being
limited by the receiver window.  In that case speed is probably
not of the essence anyway.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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