Hi Dave, This patchset contains data-path improvements, mainly for XDP_DROP and XDP_TX cases.
Main patches: * Patch 2 by Saeed allows enabling optimized A0 RX steering (in HW) when setting a single RX ring. With this configuration, HW packet-rate dramatically improves, reaching 28.1 Mpps in XDP_DROP case for both IPv4 (37% gain) and IPv6 (53% gain). * Patch 6 enhances the XDP xmit function. Among other changes, now we ring one doorbell per NAPI. Patch gives 17% gain in XDP_TX case. * Patch 7 obsoletes the NAPI of XDP_TX completion queue and integrates its poll into the respective RX NAPI. Patch gives 15% gain in XDP_TX case. Series generated against net-next commit: f7aec129a356 rxrpc: Cache the congestion window setting Thanks, Tariq. Saeed Mahameed (1): net/mlx4_en: Optimized single ring steering Tariq Toukan (9): net/mlx4_en: Remove unused argument in TX datapath function net/mlx4_en: Improve receive data-path net/mlx4_en: Improve transmit CQ polling net/mlx4_en: Improve stack xmit function net/mlx4_en: Improve XDP xmit function net/mlx4_en: Poll XDP TX completion queue in RX NAPI net/mlx4_en: Increase default TX ring size net/mlx4_en: Replace TXBB_SIZE multiplications with shift operations net/mlx4_en: Refactor mlx4_en_free_tx_desc drivers/net/ethernet/mellanox/mlx4/en_cq.c | 25 +- drivers/net/ethernet/mellanox/mlx4/en_main.c | 6 +- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 20 +- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 145 ++++++++---- drivers/net/ethernet/mellanox/mlx4/en_tx.c | 305 ++++++++++++------------- drivers/net/ethernet/mellanox/mlx4/main.c | 4 +- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 23 +- 7 files changed, 293 insertions(+), 235 deletions(-) -- 1.8.3.1
