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Open Source and information security mailing list archives
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Date: Sun, 14 Sep 2008 19:11:35 -0500 From: Jay Cliburn <jacliburn@...lsouth.net> To: David Miller <davem@...emloft.net> Cc: adobriyan@...il.com, csnook@...hat.com, netdev@...r.kernel.org Subject: Re: atl1: WARNING at net/sched/sch_generic.c:221 On Sun, 14 Sep 2008 16:56:55 -0700 (PDT) David Miller <davem@...emloft.net> wrote: > From: Jay Cliburn <jacliburn@...lsouth.net> > Date: Sun, 14 Sep 2008 14:26:54 -0500 > > > Should a netdev driver be coded such that a watchdog transmit > > timeout never occurs? > > > > [ 2086.049998] NETDEV WATCHDOG: eth0 (atl1): transmit timed out > > > > Or is a watchdog timeout an expected occurrence if a cable is > > unplugged/plugged? > > If the cable is unplugged, netif_carrier_off() will be (or should > be) invoked by the driver, and that cancels the watchdog timer. Thanks, I think I found the problem. It seems to fix it for me, but I'd like Alexey to test the patch before I submit it to mainline. He seems to be able to hit the issue more frequently than I can. > > This is all from memory since I'm travelling and don't have the > time to check this directly. You should investigate this yourself > instead of asking me if you want a truly definitive answer :) I've been investigating it myself in my spare time since Alexey pointed out the problem August 21. Happy travels. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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