netdev - Re: [PATCH] tcp: fix tcp_grow_window() for large incoming frames

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Date:	Tue, 17 Apr 2012 22:33:37 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	ncardwell@...gle.com, therbert@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH] tcp: fix tcp_grow_window() for large incoming frames

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 17 Apr 2012 11:28:07 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> tcp_grow_window() has to grow rcv_ssthresh up to window_clamp, allowing
> sender to increase its window.
> 
> tcp_grow_window() still assumes a tcp frame is under MSS, but its no
> longer true with LRO/GRO.
> 
> This patch fixes one of the performance issue we noticed with GRO on.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied.
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