Re: [PATCH v2 2/2] net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum

[Florian Fainelli]

On 7/21/2021 2:56 PM, Lino Sanfilippo wrote:
> If the checksum calculation is offloaded to the network device (e.g due to
> NETIF_F_HW_CSUM inherited from the DSA master device), the calculated
> layer 4 checksum is incorrect. This is since the DSA tag which is placed
> after the layer 4 data is considered as being part of the daa and thus
> errorneously included into the checksum calculation.
> To avoid this, always calculate the layer 4 checksum in software.
>
> Signed-off-by: Lino Sanfilippo <LinoSanfilippo@xxxxxx>

Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
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Florian