[PATCH v3 0/5] net/mlx5: add vectorized Rx/Tx burst for x86

[Yongseok Koh <yskoh@mellanox.com>]

This is to introduce more efficient Rx/Tx burst functions using SIMD
instructions. Currently it is only supported by 64bit x86 having SSE4.1.

>From functional perspective, Rx burst function is equivalent to the
existing mlx5_rx_burst() except for scatter support, which will be added
soon. Tx burst function supports multi-segment packets and offload flags
unless it is disabled by txq_flags. However, disabling those features will
bring a little higher performance.

v3:
* Remove requirement of SSE4.1 as DPDK now mandates SSE4.2 support at least.
* Bug fix in "net/mlx5: select Rx/Tx callbacks when starting device"
  - Need to re-select Rx burst func when chaning MTU size.
* Resolved an optimization issue of gcc-6 in rxq_burst_v()
  - Bit shift (<<) for 128b vector type is compiled differently. 'psllq' is
    needed instead of 'sal'.
* Minor changes to address what is mentioned by review.
  - Remove 'pragma' for PEDANTIC
  - Make mlx5_ptype_table global.
  - Change name of some inline funcs which also exist in mlx4 by the same name.
  - Fix comments and indentation/spacing.

v2:
* Streamline redundant conditional clauses in txq_complete().
* Remove the mempool pointer in txq->mp2mr structure.
* Fix indentation and spacing.

Yongseok Koh (5):
  net/mlx5: change indexing for Tx SW ring
  net/mlx5: free buffers in bulk on Tx completion
  net/mlx5: use buffer address for LKEY search
  net/mlx5: select Rx/Tx callbacks when starting device
  net/mlx5: add vectorized Rx/Tx burst for SSE4.1

 drivers/net/mlx5/Makefile            |    3 +
 drivers/net/mlx5/mlx5_defs.h         |   18 +
 drivers/net/mlx5/mlx5_ethdev.c       |   47 +-
 drivers/net/mlx5/mlx5_mr.c           |   17 +-
 drivers/net/mlx5/mlx5_rxq.c          |   57 +-
 drivers/net/mlx5/mlx5_rxtx.c         |  459 ++++-------
 drivers/net/mlx5/mlx5_rxtx.h         |  290 ++++++-
 drivers/net/mlx5/mlx5_rxtx_vec_sse.c | 1378 ++++++++++++++++++++++++++++++++++
 drivers/net/mlx5/mlx5_trigger.c      |    3 +
 drivers/net/mlx5/mlx5_txq.c          |   23 +-
 10 files changed, 1927 insertions(+), 368 deletions(-)
 create mode 100644 drivers/net/mlx5/mlx5_rxtx_vec_sse.c

-- 
2.11.0