netdev - Re: [PATCH 1/2] syncookies: do not store rcv

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Message-Id: <20100626.220046.209981863.davem@davemloft.net>
Date:	Sat, 26 Jun 2010 22:00:46 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	fw@...len.de
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] syncookies: do not store rcv_wscale in tcp
 timestamp

From: Florian Westphal <fw@...len.de>
Date: Mon, 21 Jun 2010 23:48:44 +0200

> As pointed out by Fernando Gont there is no need to encode rcv_wscale
> into the cookie.
> 
> We did not use the restored rcv_wscale anyway; it is recomputed
> via tcp_select_initial_window().
> 
> Thus we can save 4 bits in the ts option space by removing rcv_wscale.
> In case window scaling was not supported, we set the (invalid) wscale
> value 0xf.
> 
> Signed-off-by: Florian Westphal <fw@...len.de>

Applied.
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