[dpdk-dev] [PATCH v1 0/6] net/mlx5: add Multi-Packet Rx support

[Yongseok Koh]

Multi-Packet Rx Queue (MPRQ a.k.a Striding RQ) can further save PCIe
bandwidth by posting a single large buffer for multiple packets. Instead of
posting a buffer per a packet, one large buffer is posted in order to
receive multiple packets on the buffer. A MPRQ buffer consists of multiple
fixed-size strides and each stride receives one packet.

Rx packet is either mem-copied to a user-provided mbuf if length is
comparatively small or referenced by mbuf indirection otherwise. In case of
indirection, the Mempool for the direct mbufs will be allocated and managed
by PMD.

In order to make mbuf indirections to each packets in the buffer, buf_off
field is added to rte_mbuf structure and rte_pktmbuf_attach_at() is also
added.

Yongseok Koh (6):
  mbuf: add buffer offset field for flexible indirection
  net/mlx5: separate filling Rx flags
  net/mlx5: add a function to rdma-core glue
  net/mlx5: add Multi-Packet Rx support
  net/mlx5: release Tx queue resource earlier than Rx
  app/testpmd: conserve mbuf indirection flag

 app/test-pmd/csumonly.c          |   2 +
 app/test-pmd/macfwd.c            |   2 +
 app/test-pmd/macswap.c           |   2 +
 doc/guides/nics/mlx5.rst         |  23 +++
 drivers/net/mlx5/Makefile        |   5 +
 drivers/net/mlx5/mlx5.c          |  79 +++++++-
 drivers/net/mlx5/mlx5.h          |   3 +
 drivers/net/mlx5/mlx5_defs.h     |  20 ++
 drivers/net/mlx5/mlx5_ethdev.c   |   3 +
 drivers/net/mlx5/mlx5_glue.c     |   9 +
 drivers/net/mlx5/mlx5_glue.h     |   4 +
 drivers/net/mlx5/mlx5_prm.h      |  15 ++
 drivers/net/mlx5/mlx5_rxq.c      | 389 +++++++++++++++++++++++++++++++++++----
 drivers/net/mlx5/mlx5_rxtx.c     | 236 ++++++++++++++++++++----
 drivers/net/mlx5/mlx5_rxtx.h     |  16 +-
 drivers/net/mlx5/mlx5_rxtx_vec.c |   4 +
 drivers/net/mlx5/mlx5_rxtx_vec.h |   3 +-
 lib/librte_mbuf/rte_mbuf.h       | 158 +++++++++++++++-
 18 files changed, 895 insertions(+), 78 deletions(-)

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2.11.0