netdev - Re: crash with bridge and inconsistent handling of NETDEV_TX

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Message-ID: <Pine.LNX.4.64.1004202124140.30633@hs20-bc2-1.build.redhat.com>
Date:	Tue, 20 Apr 2010 21:24:34 -0400 (EDT)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	David Miller <davem@...emloft.net>
cc:	netdev@...r.kernel.org, kaber@...sh.net
Subject: Re: crash with bridge and inconsistent handling of NETDEV_TX_OK

> > On Tue, 20 Apr 2010, David Miller wrote:
> > 
> >> From: Mikulas Patocka <mpatocka@...hat.com>
> >> Date: Tue, 20 Apr 2010 21:10:04 -0400 (EDT)
> >> 
> >> > I see, but GRO is turned off on my interfaces, according to ethtool.
> >> 
> >> GRO is just a flag bit, so it's possible that if your kernel is too
> >> old ethtool will always show that it's off.
> >> 
> >> If you haven't turned off GRO explicitly, then it's a good bet that
> >> this is why it looks like it's off.  And GRO is on by default.
> > 
> > I have kernel 2.6.34-rc4, ethtool 2.6.33 and GRO is off. I haven't turned 
> > it off, I left it on default.
> 
> See my follow-up, what ethtool output makes you think GRO is
> off?  "large-receive-offload" is not GRO

generic-receive-offload: off

Mikulas
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