Extend the current support of XDP in lan966x with the action XDP_TX and XDP_REDIRECT. The first patches just prepare the things such that it would be easier to add XDP_TX and XDP_REDIRECT actions. Like adding XDP_PACKET_HEADROOM, introduce helper functions, use the correct dma_dir for the page pool The last 2 patches introduce the XDP actions XDP_TX and XDP_REDIRECT. v4->v5: - add iterator declaration inside for loops - move the scope of port inside the function lan966x_fdma_rx_alloc_page_pool - create union for skb and xdpf inside struct lan966x_tx_dcb_buf v3->v4: - use napi_consume_skb instead of dev_kfree_skb_any - arrange members in struct lan966x_tx_dcb_buf not to have holes - fix when xdp program is added the check for determining if page pool needs to be recreated was wrong - change type for len in lan966x_tx_dcb_buf to u32 v2->v3: - make sure to update rxq memory model - update the page pool direction if there is any xdp program - in case of action XDP_TX give back to reuse the page - in case of action XDP_REDIRECT, remap the frame and make sure to unmap it when is transmitted. v1->v2: - use skb_reserve of using skb_put and skb_pull - make sure that data_len doesn't include XDP_PACKET_HEADROOM Horatiu Vultur (7): net: lan966x: Add XDP_PACKET_HEADROOM net: lan966x: Introduce helper functions net: lan966x: Add len field to lan966x_tx_dcb_buf net: lan966x: Update rxq memory model net: lan966x: Update dma_dir of page_pool_params net: lan966x: Add support for XDP_TX net: lan966x: Add support for XDP_REDIRECT .../ethernet/microchip/lan966x/lan966x_fdma.c | 264 +++++++++++++++--- .../ethernet/microchip/lan966x/lan966x_main.c | 5 +- .../ethernet/microchip/lan966x/lan966x_main.h | 30 +- .../ethernet/microchip/lan966x/lan966x_xdp.c | 66 ++++- 4 files changed, 312 insertions(+), 53 deletions(-) -- 2.38.0
