netdev - Re: [RFC] net: usbnet: prevent buggy devices from killing us

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Message-ID: <6505263.QGCG9bfoCC@linux-5eaq.site>
Date:	Thu, 24 Jan 2013 11:46:52 +0100
From:	Oliver Neukum <oneukum@...e.de>
To:	Bjørn Mork <bjorn@...k.no>
Cc:	linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [RFC] net: usbnet: prevent buggy devices from killing us

On Thursday 24 January 2013 11:25:52 Bjørn Mork wrote:
> The MBIM firmware for the Sierra Wireless MC7710 is a nice source
> of "interesting" device issues.  One of the uglier ones is that
> it under certain conditions will start flooding us with frames
> having length 0 as fast as it can.  And that is pretty fast...

If you can tell that those frames are bogus, why not count them
as opposed to generic qlen? Say, if you see 20 among the last 30
are of this type, throttle.

	Regards
		Oliver

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