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Date: Wed, 18 Nov 2015 06:30:49 -0800 From: Eric Dumazet <edumazet@...gle.com> To: "David S . Miller" <davem@...emloft.net> Cc: netdev <netdev@...r.kernel.org>, Eliezer Tamir <eliezer.tamir@...ux.intel.com>, Eli Cohen <eli@...lanox.com>, Eugenia Emantayev <eugenia@...lanox.com>, Ariel Elior <ariel.elior@...gic.com>, Willem de Bruijn <willemb@...gle.com>, Rida Assaf <rida@...gle.com>, Eric Dumazet <edumazet@...gle.com>, Eric Dumazet <eric.dumazet@...il.com> Subject: [PATCH v2 net-next 00/14] net: extend busy polling support This patch series extends busy polling range to tunnels devices, and adds busy polling generic support to all NAPI drivers. No need to provide ndo_busy_poll() method and extra synchronization between ndo_busy_poll() and normal napi->poll() method. This was proven very difficult and bug prone. mlx5 driver is changed to support busy polling using this new method, and a second mlx5 patch adds napi_complete_done() support and proper SNMP accounting. bnx2x and mlx4 drivers are converted to new infrastructure, reducing kernel bloat and improving performance. Latest patch, adding generic support, adds a new requirement : -free_netdev() and netif_napi_del() must be called from process context. Since this might not be the case in some drivers, we might have to either : fix the non conformant drivers (by disabling busy polling on them) or revert this last patch. Eric Dumazet (14): net: better skb->sender_cpu and skb->napi_id cohabitation mlx4: mlx4_en_low_latency_recv() called with BH disabled net: un-inline sk_busy_loop() net: allow BH servicing in sk_busy_loop() net: network drivers no longer need to implement ndo_busy_poll() mlx5: add busy polling support mlx5: support napi_complete_done() bnx2x: remove bnx2x_low_latency_recv() support mlx4: remove mlx4_en_low_latency_recv() net: move skb_mark_napi_id() into core networking stack net: add netif_tx_napi_add() net: move napi_hash[] into read mostly section net: napi_hash_del() returns a boolean status net: provide generic busy polling to all NAPI drivers drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 1 - drivers/net/ethernet/broadcom/bcmsysport.c | 2 +- drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 113 ------------------ drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 50 +------- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h | 7 -- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 3 - drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 - drivers/net/ethernet/broadcom/genet/bcmgenet.c | 4 +- drivers/net/ethernet/chelsio/cxgb4/sge.c | 2 - drivers/net/ethernet/cisco/enic/enic_main.c | 2 - drivers/net/ethernet/emulex/benet/be_main.c | 2 - .../net/ethernet/freescale/fs_enet/fs_enet-main.c | 2 +- drivers/net/ethernet/freescale/gianfar.c | 4 +- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 1 - drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 1 - drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c | 1 - drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 3 - drivers/net/ethernet/mellanox/mlx4/en_cq.c | 10 +- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 17 --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 40 ------- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 18 +-- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 126 --------------------- drivers/net/ethernet/mellanox/mlx5/core/en.h | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 5 + drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 15 ++- drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c | 11 +- drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 3 +- drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c | 4 +- drivers/net/ethernet/rocker/rocker.c | 2 +- drivers/net/ethernet/sfc/efx.c | 1 - drivers/net/ethernet/sfc/rx.c | 1 - drivers/net/ethernet/ti/cpsw.c | 2 +- drivers/net/ethernet/ti/netcp_core.c | 2 +- drivers/net/virtio_net.c | 3 - drivers/net/wireless/ath/wil6210/netdev.c | 2 +- include/linux/hashtable.h | 4 + include/linux/netdevice.h | 44 +++++-- include/linux/skbuff.h | 3 - include/net/busy_poll.h | 45 +------- net/core/dev.c | 116 +++++++++++++++---- 41 files changed, 171 insertions(+), 507 deletions(-) -- 2.6.0.rc2.230.g3dd15c0 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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