From: Rick Jones <rick.jones2@hp.com>
To: Volkan YAZICI <volkan.yazici@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: How To Temporarily Suspend Network Traffic
Date: Tue, 01 Feb 2011 09:32:32 -0800 [thread overview]
Message-ID: <4D4843B0.1090803@hp.com> (raw)
In-Reply-To: <87d3nbakwx.fsf@alamut.ozu.edu.tr>
Volkan YAZICI wrote:
> 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?
Out of not quite idle curiousity, what are you trying to accomplish?
Instead of using tc to set a zero rate, you could perhaps try using tc to set a
delay? If it doesn't offer microseconds of delay, pehaps setting a delay and
then eliminating it after your own pause will do what you want - depends of
course on what it is you really want. Your saying you wanted microsecond
granularity suggests you don't want to suspend traffic for very long?
rick jones
>
> Regards.
> --
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next prev parent reply other threads:[~2011-02-01 17:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-01 14:28 How To Temporarily Suspend Network Traffic Volkan YAZICI
2011-02-01 17:32 ` Rick Jones [this message]
2011-02-01 17:49 ` Stephen Hemminger
2011-02-01 18:22 ` Volkan YAZICI
2011-02-01 18:12 ` Volkan YAZICI
2011-02-01 20:03 ` Rick Jones
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