On Tue, 30 Apr 2019 at 20:12, Maxim Mikityanskiy <maximmi@xxxxxxxxxxxx> wrote: > > This series contains improvements to the AF_XDP kernel infrastructure > and AF_XDP support in mlx5e. The infrastructure improvements are > required for mlx5e, but also some of them benefit to all drivers, and > some can be useful for other drivers that want to implement AF_XDP. > > The performance testing was performed on a machine with the following > configuration: > > - 24 cores of Intel Xeon E5-2620 v3 @ 2.40 GHz > - Mellanox ConnectX-5 Ex with 100 Gbit/s link > > The results with retpoline disabled, single stream: > > txonly: 33.3 Mpps (21.5 Mpps with queue and app pinned to the same CPU) > rxdrop: 12.2 Mpps > l2fwd: 9.4 Mpps > > The results with retpoline enabled, single stream: > > txonly: 21.3 Mpps (14.1 Mpps with queue and app pinned to the same CPU) > rxdrop: 9.9 Mpps > l2fwd: 6.8 Mpps > > v2 changes: > > Added patches for mlx5e and addressed the comments for v1. Rebased for > bpf-next (net-next has to be merged first, because this series depends > on some patches from there). > Nit: There're some checkpatch warnings (>80 char lines) for the driver parts. > Maxim Mikityanskiy (16): > xsk: Add API to check for available entries in FQ > xsk: Add getsockopt XDP_OPTIONS > libbpf: Support getsockopt XDP_OPTIONS > xsk: Extend channels to support combined XSK/non-XSK traffic > xsk: Change the default frame size to 4096 and allow controlling it > xsk: Return the whole xdp_desc from xsk_umem_consume_tx > net/mlx5e: Replace deprecated PCI_DMA_TODEVICE > net/mlx5e: Calculate linear RX frag size considering XSK > net/mlx5e: Allow ICO SQ to be used by multiple RQs > net/mlx5e: Refactor struct mlx5e_xdp_info > net/mlx5e: Share the XDP SQ for XDP_TX between RQs > net/mlx5e: XDP_TX from UMEM support > net/mlx5e: Consider XSK in XDP MTU limit calculation > net/mlx5e: Encapsulate open/close queues into a function > net/mlx5e: Move queue param structs to en/params.h > net/mlx5e: Add XSK support > > drivers/net/ethernet/intel/i40e/i40e_xsk.c | 12 +- > drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 15 +- > .../net/ethernet/mellanox/mlx5/core/Makefile | 2 +- > drivers/net/ethernet/mellanox/mlx5/core/en.h | 147 +++- > .../ethernet/mellanox/mlx5/core/en/params.c | 108 ++- > .../ethernet/mellanox/mlx5/core/en/params.h | 87 ++- > .../net/ethernet/mellanox/mlx5/core/en/xdp.c | 231 ++++-- > .../net/ethernet/mellanox/mlx5/core/en/xdp.h | 36 +- > .../mellanox/mlx5/core/en/xsk/Makefile | 1 + > .../ethernet/mellanox/mlx5/core/en/xsk/rx.c | 192 +++++ > .../ethernet/mellanox/mlx5/core/en/xsk/rx.h | 27 + > .../mellanox/mlx5/core/en/xsk/setup.c | 220 ++++++ > .../mellanox/mlx5/core/en/xsk/setup.h | 25 + > .../ethernet/mellanox/mlx5/core/en/xsk/tx.c | 108 +++ > .../ethernet/mellanox/mlx5/core/en/xsk/tx.h | 15 + > .../ethernet/mellanox/mlx5/core/en/xsk/umem.c | 252 +++++++ > .../ethernet/mellanox/mlx5/core/en/xsk/umem.h | 34 + > .../ethernet/mellanox/mlx5/core/en_ethtool.c | 21 +- > .../mellanox/mlx5/core/en_fs_ethtool.c | 44 +- > .../net/ethernet/mellanox/mlx5/core/en_main.c | 680 +++++++++++------- > .../net/ethernet/mellanox/mlx5/core/en_rep.c | 12 +- > .../net/ethernet/mellanox/mlx5/core/en_rx.c | 104 ++- > .../ethernet/mellanox/mlx5/core/en_stats.c | 115 ++- > .../ethernet/mellanox/mlx5/core/en_stats.h | 30 + > .../net/ethernet/mellanox/mlx5/core/en_txrx.c | 42 +- > .../ethernet/mellanox/mlx5/core/ipoib/ipoib.c | 14 +- > drivers/net/ethernet/mellanox/mlx5/core/wq.h | 5 - > include/net/xdp_sock.h | 27 +- > include/uapi/linux/if_xdp.h | 18 + > net/xdp/xsk.c | 43 +- > net/xdp/xsk_queue.h | 14 + > samples/bpf/xdpsock_user.c | 52 +- > tools/include/uapi/linux/if_xdp.h | 18 + > tools/lib/bpf/xsk.c | 127 +++- > tools/lib/bpf/xsk.h | 6 +- > 35 files changed, 2384 insertions(+), 500 deletions(-) > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/Makefile > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.c > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/rx.h > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.h > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.h > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/umem.c > create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/xsk/umem.h > > -- > 2.19.1 >
