Add support for xdp in lan966x driver. Currently only XDP_PASS and XDP_DROP are supported. The first 2 patches are just moving things around just to simplify the code for when the xdp is added. Patch 3 actually adds the xdp. Currently the only supported actions are XDP_PASS and XDP_DROP. In the future this will be extended with XDP_TX and XDP_REDIRECT. Patch 4 changes to use page pool API, because the handling of the pages is similar with what already lan966x driver is doing. In this way is possible to remove some of the code. All these changes give a small improvement on the RX side: Before: iperf3 -c 10.96.10.1 -R [ 5] 0.00-10.01 sec 514 MBytes 430 Mbits/sec 0 sender [ 5] 0.00-10.00 sec 509 MBytes 427 Mbits/sec receiver After: iperf3 -c 10.96.10.1 -R [ 5] 0.00-10.02 sec 540 MBytes 452 Mbits/sec 0 sender [ 5] 0.00-10.01 sec 537 MBytes 450 Mbits/sec receiver --- v1->v2: - rebase on net-next, once the fixes for FDMA and MTU were accepted - drop patch 2, which changes the MTU as is not needed anymore - allow to run xdp programs on frames bigger than 4KB Horatiu Vultur (4): net: lan966x: Add define IFH_LEN_BYTES net: lan966x: Split function lan966x_fdma_rx_get_frame net: lan966x: Add basic XDP support net: lan96x: Use page_pool API .../net/ethernet/microchip/lan966x/Kconfig | 1 + .../net/ethernet/microchip/lan966x/Makefile | 3 +- .../ethernet/microchip/lan966x/lan966x_fdma.c | 166 ++++++++++++------ .../ethernet/microchip/lan966x/lan966x_ifh.h | 1 + .../ethernet/microchip/lan966x/lan966x_main.c | 7 +- .../ethernet/microchip/lan966x/lan966x_main.h | 25 +++ .../ethernet/microchip/lan966x/lan966x_xdp.c | 81 +++++++++ 7 files changed, 224 insertions(+), 60 deletions(-) create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_xdp.c -- 2.38.0
