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SubjectRe: [PATCH net-next 0/2] net: ethtool add VxLAN to the NFC API
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On 2022/8/18 2:16, Jakub Kicinski wrote:
> On Wed, 17 Aug 2022 22:35:36 +0800 Guangbin Huang wrote:
>> This series adds support for steering VxLAN flows using the ethtool NFC
>> interface, and implements it for hns3 devices.
>
> Why can't TC be used for this? Let's not duplicate the same
> functionality in two places, TC flower can already match on
> tunnel headers.
> .
>
Hi Jakub,
1. I check the manual and implement of TC flower, it doesn't seems
to support configuring flows steering to a specific queue.
2. Our hns3 driver has supported configuring some type of flows
steering to a specific queue by ethtool -U command, many users
have already use ethtool way.
3. In addition, if our driver supports TC flower to configure flows
steering to a specific queue, can we allow user to simultaneously
use TC flower and ethtool to configure flow rules? Could the rules
configured by TC flower be queried by ethtool -u?
If two ways can be existing, I think it is more complicated for
driver to manage flow rules.



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