netdev - Re: [RFC PATCH 2/2] net: macb: Disable TX checksum offloading on all Zynq

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Date:   Wed, 6 Jun 2018 08:50:45 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Jennifer Dahm <jennifer.dahm@...com>, <netdev@...r.kernel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Harini Katakam <harini.katakam@...inx.com>
CC:     Nathan Sullivan <nathan.sullivan@...com>
Subject: Re: [RFC PATCH 2/2] net: macb: Disable TX checksum offloading on all
 Zynq

On 4.6.2018 17:06, Nicolas Ferre wrote:
> On 25/05/2018 at 23:44, Jennifer Dahm wrote:
>> The Zynq ethernet hardware has checksum offloading bugs that cause
>> small UDP packets (<= 2 bytes) to be sent with an incorrect checksum
>> (0xffff) and forwarded UDP packets to be re-checksummed, which is
>> illegal behavior. The best solution we have right now is to disable
>> hardware TX checksum offloading entirely.
>>
>> Signed-off-by: Jennifer Dahm <jennifer.dahm@...com>
> 
> Adding some xilinx people I know...

Harini: Please look at this.

Thanks,
Michal