Re: d80211: How does TX flow control work?

[Jan Kiszka <jan.kiszka@web.de>]

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Michael Wu wrote:
> On Tuesday 01 May 2007 11:25, Jiri Benc wrote:
>> On Tue, 01 May 2007 16:18:52 +0200, Jan Kiszka wrote:
>>> Already tried this lethal command? Works "fine" here...
>>>
>>> #tc qdisc del dev wmaster0 root
>> I cannot reproduce it too.
>>
> I can reproduce it.

Fine, that save /me some time.

> I thought qdiscs couldn't be changed without taking the 
> interface down first.. which is not true. It merely waits for things to quiet 
> down before swapping out the qdisc.
> 
> Some code in ieee80211_master_start_xmit probably will be needed to correctly 
> handle things if the ieee80211 qdisc isn't installed. I don't see an easy way 
> to prevent things from working all the time if the qdisc is removed.

I didn't followed the discussion in details, but wasn't there once a
suggestion to hide netdevices from the user so that there would be no
chance to stumble over this issue?

Jan


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