[Intel-wired-lan] [PATCH 00/10] igc: Add support for AF_XDP zero-copy

[Maciej Fijalkowski <maciej.fijalkowski@intel.com>]

On Thu, Dec 17, 2020 at 12:24:05PM -0800, Andre Guedes wrote:
> Hi,
> 
> This series adds AF_XDP zero-copy feature to igc driver.
> 
> The initial patches do some code refactoring, preparing the code base to
> land the AF_XDP zero-copy feature, avoiding code duplications. The last
> patches of the series are the ones implementing the feature.
> 
> The last patch which indeed implements AF_XDP zero-copy support was
> originally way too lengthy so, for the sake of code review, I broke it
> up into two patches: one adding support for the RX functionality and the
> other one adding TX support. Feel free to squash those two patches when
> pushing the series to net-next if you find appropriate.

Generally this looks good! I had only minor comments.

I'm interested how are you going to utilize the AF_XDP ZC, probably
something related to TSN ;)

> 
> Best,
> Andre
> 
> Andre Guedes (10):
>   igc: Move igc_xdp_is_enabled()
>   igc: Refactor igc_xdp_run_prog()
>   igc: Refactor igc_clean_rx_ring()
>   igc: Refactor XDP rxq info registration
>   igc: Introduce igc_update_rx_stats()
>   igc: Introduce igc_update_tx_stats()
>   igc: Introduce igc_unmap_tx_buffer() helper
>   igc: Replace IGC_TX_FLAGS_XDP flag by an enum
>   igc: Enable RX via AF_XDP zero-copy
>   igc: Enable TX via AF_XDP zero-copy
> 
>  drivers/net/ethernet/intel/igc/igc.h      |  33 +-
>  drivers/net/ethernet/intel/igc/igc_base.h |   2 +
>  drivers/net/ethernet/intel/igc/igc_main.c | 650 ++++++++++++++++++----
>  drivers/net/ethernet/intel/igc/igc_xdp.c  | 107 +++-
>  drivers/net/ethernet/intel/igc/igc_xdp.h  |   8 +-
>  5 files changed, 672 insertions(+), 128 deletions(-)
> 
> -- 
> 2.29.2
>