[dpdk-dev] [PATCH 2/2] net/tap: allow RSS flow action

Ferruh Yigit ferruh.yigit at intel.com
Thu Oct 5 23:34:47 CEST 2017


>> On 03/10/2017 16:55, Matan Azrad wrote:
>>> One of the main identified use cases for the tap PMD is to be used in
>>> combination with the fail-safe PMD as a fallback for a physical device.
>>> Fail-safe is very strict about making sure its current configuration is
>>> properly applied to all slave devices, they get rejected otherwise in
>>> order to maintain a consistent state.
>>> The problem is that tap's RSS support is currently limited to the
>>> default (non-Toeplitz) balancing performed by the kernel on all Rx
>>> queues. While proper RSS support emulation in the tap PMD is a work in
>>> progress, the lack of rte_flow counterpart prevents validation of the
>>> above use case in the meantime.
>>> Given that unlike most PMDs, tap is more about convenience than
>>> performance, support for the RSS action can be temporarily faked with
>>> a minimum amount of code and mostly correct behavior by treating it
>>> like a QUEUE action. Traffic is directed to the first queue of the set.
>>> Signed-off-by: Matan Azrad <matan at mellanox.com>

> Acked-by: Pascal Mazon <pascal.mazon at 6wind.com>

Applied to dpdk-next-net/master, thanks.

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