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Date:	Thu,  7 Feb 2008 21:32:30 -0800
From:	Glenn Griffin <>
To:	Eric Dumazet <>
Cc:	Evgeniy Polyakov <>,
	Glenn Griffin <>,
	Alan Cox <>,
	Andi Kleen <>,,
Subject: Re: [PATCH] Add IPv6 support to TCP SYN cookies

> Or maybe use percpu storage for that...

That seems like a good approach.  I'll incorporate it into my v6 patch,
and send out an update.  Thanks.

> I am not sure if cookie_hash() is always called with preemption disabled.
> (If not, we have to use get_cpu_var()/put_cpu_var())

cookie_hash is always called within NET_RX_SOFTIRQ context so I believe
preemption will always be disabled by __do_softirq().  So there
shouldn't be a need to use get_cpu_var/put_cpu_var, somebody correct me
if I'm wrong.


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