Re: [dpdk-dev] [PATCH v3 0/6] get status of Rx and Tx descriptors

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2017-03-29 10:36, Olivier Matz:
> This patchset introduces a new ethdev API:
> - rte_eth_rx_descriptor_status()
> - rte_eth_tx_descriptor_status()
> 
> The Rx API is aims to replace rte_eth_rx_descriptor_done() which
> does almost the same, but does not differentiate the case of a
> descriptor used by the driver (not returned to the hw).
> 
> The usage of these functions can be:
> - on Rx, anticipate that the cpu is not fast enough to process
>   all incoming packets, and take dispositions to solve the
>   problem (add more cpus, drop specific packets, ...)
> - on Tx, detect that the link is overloaded, and take dispositions
>   to solve the problem (notify flow control, drop specific
>   packets)
> 
> The patchset updates ixgbe, i40e, e1000, mlx5.
> The other drivers that implement the descriptor_done() API are
> fm10k, sfc, virtio. They are not updated.
> If the new API is accepted, the descriptor_done() can be deprecated,
> and examples/l3fwd-power will be updated to.

Applied, thanks

Next steps:
- implement it in other drivers
- deprecate descriptor_done API

Ferruh, please, could you check with drivers maintainers?
Thanks