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

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Date:	Tue, 20 Apr 2010 18:22:15 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mpatocka@...hat.com
Cc:	netdev@...r.kernel.org, kaber@...sh.net
Subject: Re: crash with bridge and inconsistent handling of NETDEV_TX_OK

From: Mikulas Patocka <mpatocka@...hat.com>
Date: Tue, 20 Apr 2010 21:20:09 -0400 (EDT)

> 
> 
> 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
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