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References: <56A2993B.4070307@gmail.com> <20160122131046.6f141681@xeon-e3>
From: =?UTF-8?Q?=c3=81lvaro_Fern=c3=a1ndez_Rojas?= <noltari@gmail.com>
Message-ID: <56A2AF73.2090204@gmail.com>
Date: Fri, 22 Jan 2016 23:38:43 +0100
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Subject: Re: [Bridge] hw csum failure introduced in linux-4.2
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To: Stephen Hemminger <stephen@networkplumber.org>
Cc: bridge@lists.linux-foundation.org, davem@davemloft.net

Yes, I could reproduce it on OpenWrt using linux-4.4 on a Raspberry Pi 2.
https://gist.github.com/Noltari/5b1cfdecce5ed4bc08fd

No, I didn't open any issue on the kernel bugzilla.
If you want me to report it somewhere else I don't have any problem with it.

Regards,
Álvaro.

El 22/01/2016 a las 22:10, Stephen Hemminger escribió:
> On Fri, 22 Jan 2016 22:03:55 +0100
> Álvaro Fernández Rojas <noltari@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@vger.kernel.org.
>
> Can you reproduce it with 4.4?