[Bridge] hw csum failure introduced in linux-4.2

Stephen Hemminger stephen at networkplumber.org
Fri Jan 22 21:10:46 UTC 2016


On Fri, 22 Jan 2016 22:03:55 +0100
Álvaro Fernández Rojas <noltari at gmail.com> wrote:

>  From linux-4.2 there's a "hw csum failure" for bridges using hardware 
> checksums when IPv6 multicast traffic is received.
> 
> Here are some reports:
> https://lkml.org/lkml/2015/12/1/699
> https://bugzilla.redhat.com/show_bug.cgi?id=1266601
> https://discourse.osmc.tv/t/hw-csum-failure/9990
> https://github.com/raspberrypi/linux/issues/1259
> 
> I think it may have been introduced in commit 
> 9afd85c9e4552b276e2f4cfefd622bdeeffbbf26 (net: Export IGMP/MLD message 
> validation code) but I haven't done any tests to confirm it.
> Any help on this issue would be really appreciated.
> 
> Regards,
> Álvaro.

What hardware? You missed the kernel bugzilla? If it was reported
there I would have forwarded it to netdev at vger.kernel.org.

Can you reproduce it with 4.4?


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