netdev - How To Temporarily Suspend Network Traffic

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Date:	Tue, 01 Feb 2011 16:28:46 +0200
From:	Volkan YAZICI <volkan.yazici@...il.com>
To:	netdev@...r.kernel.org
Subject: How To Temporarily Suspend Network Traffic

Hi,

I want to temporarily suspend the network traffic on a particular
interface -- if possible, in microsecond granularity. For this purpose,
ifup/ifdown ioctl() calls doesn't work. That is, for wireless
interfaces, connection isn't get recovered; for wired interfaces, it
takes at least 2 seconds to recover. I tried using tc, but it doesn't
accept "rate 0" parameter. Neither "iwconfig wlan0 rate 0" has any
effect. (Moreover, in iwconfig manual it is told that values below 1000
are card specific and are usually an index in the bit-rate list.) Do you
have any suggestions? Can you recommend me to check any code piece in
the kernel or some other tool?

Regards.
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