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Date:	Sat, 26 Jun 2010 22:00:46 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH 1/2] syncookies: do not store rcv_wscale in tcp

From: Florian Westphal <>
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 <>

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