netdev - Re: [PATCH] syncookies: remove last_synq_overflow from struct tcp

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Date:	Mon, 20 Apr 2009 02:26:13 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	fw@...len.de
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] syncookies: remove last_synq_overflow from struct
 tcp_sock

From: Florian Westphal <fw@...len.de>
Date: Sun, 19 Apr 2009 21:43:48 +0200

> last_synq_overflow eats 4 or 8 bytes in struct tcp_sock, even
> though it is only used when a listening sockets syn queue
> is full.
> 
> We can (ab)use rx_opt.ts_recent_stamp to store the same information;
> it is not used otherwise as long as a socket is in listen state.
> 
> Move linger2 around to avoid splitting struct mtu_probe
> across cacheline boundary on 32 bit arches.
> 
> Signed-off-by: Florian Westphal <fw@...len.de>

This looks good, applied, thanks.
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