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Lorenzo Bianconi says: ==================== add XDP support to mvneta driver Add XDP support to mvneta driver for devices that rely on software buffer management. Supported verdicts are: - XDP_DROP - XDP_PASS - XDP_REDIRECT - XDP_TX Moreover set ndo_xdp_xmit net_device_ops function pointer in order to support redirecting from other device (e.g. virtio-net). Convert mvneta driver to page_pool API. This series is based on previous work done by Jesper and Ilias. We will send follow-up patches to reduce DMA-sync operations. Changes since v4: - reset page_pool pointer to NULL in mvneta_rxq_drop_pkts and in mvneta_create_page_pool error path - move dma sync in mvneta_rx_refill() in patch 2/7 - verify bpf prog pointer in mvneta_xdp_setup to double-check if stop/start is really necessary - coding style fixes Changes since v3: - rename MVNETA_XDP_CONSUMED in MVNETA_XDP_DROPPED - squash patch 4/8 and patch 3/8 - fix dma sync for XDP_TX verdict - fix queue_index in xdp_rxq_info_reg - cosmetics Changes since v2: - rely on page_pool_recycle_direct instead of xdp_return_buff for XDP_DROP - define xdp buffer in mvneta_rx_swbm and avoid default initializations - use dma_sync_single_for_cpu instead of dma_sync_single_range_for_cpu - run page_pool_release_page in mvneta_swbm_add_rx_fragment even if the buffer contains just ETH_FCS Changes since v1: - sync dma buffers before refilling hw queues - fix stats accounting Changes since RFC: - implement XDP_TX - make tx pending buffer list agnostic - code refactoring - check if device is running in mvneta_xdp_setup ==================== Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
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