mbox series

[v2,for-next,0/2] RDMA/hns: Add support for userspace Direct WQE

Message ID 1622705834-19353-1-git-send-email-liweihang@huawei.com (mailing list archive)
Headers show
Series RDMA/hns: Add support for userspace Direct WQE | expand

Message

Weihang Li June 3, 2021, 7:37 a.m. UTC 
Direct wqe is a mechanism to fill wqe directly into the hardware. In the
case of light load, the wqe will be filled into pcie bar space of the
hardware, this will reduce one memory access operation and therefore
reduce the latency. 

This series first refactor current uar mmap process to add branch for
direct wqe, then the feature is enabled.

The related userspace series is named "libhns: Add support for direct WQE".

Changes since v1:
- Remove 'inline' of two functions in #1.
- Enable direct wqe by default in #2.
- https://patchwork.kernel.org/project/linux-rdma/cover/1622193545-3281-1-git-send-email-liweihang@huawei.com/

Xi Wang (1):
  RDMA/hns: Refactor hns uar mmap flow

Yixing Liu (1):
  RDMA/hns: Support direct WQE of userspace

 drivers/infiniband/hw/hns/hns_roce_device.h |  7 ++-
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c  |  1 +
 drivers/infiniband/hw/hns/hns_roce_main.c   | 72 +++++++++++++++++++++++++++--
 drivers/infiniband/hw/hns/hns_roce_pd.c     |  8 +++-
 drivers/infiniband/hw/hns/hns_roce_qp.c     |  5 ++
 include/uapi/rdma/hns-abi.h                 |  6 +++
 6 files changed, 90 insertions(+), 9 deletions(-)