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(parent: 9587c6d) | patch
syncookies: do not store rcv_wscale in tcp timestamp
authorFlorian Westphal <fw@strlen.de>
Mon, 21 Jun 2010 11:48:44 +0000 (11:48 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 27 Jun 2010 05:00:03 +0000 (22:00 -0700)
commit734f614bc1e7c6bf075d201f6bd9a555b8b4a984
treef5602e98d4088b1b667e286a1ead644122cd77e8tree | snapshot (tar.gz zip)
parent9587c6ddd452314e8ed5707ad832a507a030ef57commit | diff
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>
net/ipv4/syncookies.c diff | blob | blame | history
net/ipv6/syncookies.c diff | blob | blame | history