tree f5602e98d4088b1b667e286a1ead644122cd77e8
parent 9587c6ddd452314e8ed5707ad832a507a030ef57
author Florian Westphal <fw@strlen.de> 1277120924 +0000
committer David S. Miller <davem@davemloft.net> 1277614803 -0700

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>