[Intel-wired-lan] [E1000-devel] i40e: Deadly GRE packet

[Wyborny, Carolyn]

> -----Original Message-----
> From: Michał Mirosław [mailto:michal.miroslaw at atendesoftware.pl]
> Sent: Thursday, April 21, 2016 5:45 AM
> To: e1000-devel at lists.sourceforge.net; intel-wired-lan at lists.osuosl.org
> Cc: Paweł Małachowski <pawel.malachowski at atendesoftware.pl>; mirq-
> linux at rere.qmqm.pl
> Subject: [E1000-devel] i40e: Deadly GRE packet
> 
> Dear Developers,
> 
> I have a setup of a pair of SuperMicro-branded XL710s connected with
> passive crossover cable, one (eth4) is using firmware 5.0, the other (eth7)
> is using fw 4.33. When I send couple of packets with no payload in GRE over
> IP over ETH from eth7 to eth4, the receiving card stops processing further
> packets. It seems that 4 empty-GRE packets in succession are enough to kill
> the card's receivers (all ports stop working), more if there are other
> packets inbetween. Transmit direction is not affected. After reboot, the
> card comes back, reloading the driver (or unbind/bind) is not enough to fix
> the problem.
> 
Can you also provide the version of the driver you are using?  Ethtool -i

Thanks,

Carolyn