As mentioned half a year ago, we better switch mlx4 driver to order-0 allocations and page recycling.
This reduces vulnerability surface thanks to better skb->truesize tracking and provides better performance in most cases. v2 provides an ethtool -S new counter (rx_alloc_pages) and code factorization, plus Tariq fix. v3 includes various fixes based on Tariq tests and feedback from Saeed and Tariq. Worth noting this patch series deletes ~250 lines of code ;) Eric Dumazet (14): mlx4: use __skb_fill_page_desc() mlx4: dma_dir is a mlx4_en_priv attribute mlx4: remove order field from mlx4_en_frag_info mlx4: get rid of frag_prefix_size mlx4: rx_headroom is a per port attribute mlx4: reduce rx ring page_cache size mlx4: removal of frag_sizes[] mlx4: use order-0 pages for RX mlx4: add page recycling in receive path mlx4: add rx_alloc_pages counter in ethtool -S mlx4: do not access rx_desc from mlx4_en_process_rx_cq() mlx4: factorize page_address() calls mlx4: make validate_loopback() more generic mlx4: remove duplicate code in mlx4_en_process_rx_cq() drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 2 +- drivers/net/ethernet/mellanox/mlx4/en_port.c | 2 + drivers/net/ethernet/mellanox/mlx4/en_rx.c | 609 +++++++---------------- drivers/net/ethernet/mellanox/mlx4/en_selftest.c | 6 - drivers/net/ethernet/mellanox/mlx4/en_tx.c | 4 +- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 29 +- drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h | 2 +- 7 files changed, 202 insertions(+), 452 deletions(-) -- 2.11.0.483.g087da7b7c-goog
