Re: [PATCH] Add IPv6 support to TCP SYN cookies

From: Glenn Griffin
Date: Fri Feb 08 2008 - 00:25:27 EST


> 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.

--Glenn

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/