From: Florian Westphal <fw@strlen.de>
Date: Mon, 21 Jun 2010 11:48:44 +0000 (+0000)
Subject: syncookies: do not store rcv_wscale in tcp timestamp
X-Git-Tag: v2.6.36-rc1~571^2~448
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=734f614bc1e7c6bf075d201f6bd9a555b8b4a984;p=pandora-kernel.git

syncookies: do not store rcv_wscale in tcp timestamp

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@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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