> Enhance mlx5 with a data path that bypasses Verbs. > > The first half of this patchset removes support for functionality completely > rewritten in the second half (scatter/gather, inline send), while the data > path is refactored without Verbs. > > The PMD remains usable during the transition. > > This patchset must be applied after "Miscellaneous fixes for mlx4 and mlx5". > > Adrien Mazarguil (8): > mlx5: replace countdown with threshold for TX completions > mlx5: add debugging information about TX queues capabilities > mlx5: check remaining space while processing TX burst > mlx5: resurrect TX gather support > mlx5: work around spurious compilation errors > mlx5: remove redundant RX queue initialization code > mlx5: make RX queue reinitialization safer > mlx5: resurrect RX scatter support > > Nelio Laranjeiro (15): > mlx5: split memory registration function for better performance > mlx5: remove TX gather support > mlx5: remove RX scatter support > mlx5: remove configuration variable for maximum number of segments > mlx5: remove inline TX support > mlx5: split TX queue structure > mlx5: split RX queue structure > mlx5: update prerequisites for upcoming enhancements > mlx5: add definitions for data path without Verbs > mlx5: add support for configuration through kvargs > mlx5: add TX/RX burst function selection wrapper > mlx5: refactor RX data path > mlx5: refactor TX data path > mlx5: handle RX CQE compression > mlx5: add support for multi-packet send > > Yaacov Hazan (1): > mlx5: add support for inline send > > config/common_base | 2 - > doc/guides/nics/mlx5.rst | 94 +- > drivers/net/mlx5/Makefile | 49 +- > drivers/net/mlx5/mlx5.c | 158 ++- > drivers/net/mlx5/mlx5.h | 10 + > drivers/net/mlx5/mlx5_defs.h | 26 +- > drivers/net/mlx5/mlx5_ethdev.c | 188 +++- > drivers/net/mlx5/mlx5_fdir.c | 20 +- > drivers/net/mlx5/mlx5_mr.c | 280 +++++ > drivers/net/mlx5/mlx5_prm.h | 155 +++ > drivers/net/mlx5/mlx5_rxmode.c | 8 - > drivers/net/mlx5/mlx5_rxq.c | 757 +++++--------- > drivers/net/mlx5/mlx5_rxtx.c | 2206 +++++++++++++++++++++++----------------- > drivers/net/mlx5/mlx5_rxtx.h | 176 ++-- > drivers/net/mlx5/mlx5_txq.c | 362 ++++--- > drivers/net/mlx5/mlx5_vlan.c | 6 +- > 16 files changed, 2578 insertions(+), 1919 deletions(-) > create mode 100644 drivers/net/mlx5/mlx5_mr.c > create mode 100644 drivers/net/mlx5/mlx5_prm.h > > -- > 2.1.4
This is a very exciting patch. I applied it and reran some microbenchmarks of mine that test the TX and RX paths separately. These are the results I got: TX path (burst = 64 packets) 1 thread - 2 ports - 4 queues per port: 39Mpps => 48Mpps 2 threads - 2 ports - 2 queues per port: 60Mpps => 60Mpps (hardware limitation?) RX path (burst = 32 packets) 1 thread - 2 ports - 4 queues per port: 38Mpps => 46Mpps 2 threads - 2 ports - 2 queues per port: 43Mpps => 50Mpps The tests were run on the following hardware, using DPDK master with this patch and the "Miscellaneous fixes for mlx4 and mlx5" patch applied: 2x Intel Xeon E5-2680 v3 2.5GHz 64GB DDR4-2133 1x Mellanox ConnectX-4 EN, 40/56GbE dual-port, PCIe3.0 x8 (MCX414A-BCAT) I haven't test it extensively outside of these microbenchmarks, but so far this patch has been working great on my end, so: tested-by: Javier Blazquez <jblazquez at riotgames.com>
