[rdma-core,0/5] Add user space dma-buf support

Message

Xiong, Jianxin Nov. 23, 2020, 5:52 p.m. UTC

This is the user space counter-part of the kernel patch set to add
dma-buf support to the RDMA subsystem. This patch series adds user
space API for registering dma-buf based memory regions, updates
pyverbs with the new API, and adds new tests.

This series consists of five patches. The first patch adds the new API
function and updates the man pages. Patch 2 implements the new API in
the mlx5 provider. Patch 3 adds new class definitions to pyverbs for
the new API. Patch 4 adds new tests for the new API. Patch 5 fixes bug
in the utility code of the tests.

Jianxin Xiong (5):
  verbs: Support dma-buf based memory region
  mlx5: Support dma-buf based memory region
  pyverbs: Add dma-buf based MR support
  tests: Add tests for dma-buf based memory regions
  tests: Bug fix for get_access_flags()

 kernel-headers/rdma/ib_user_ioctl_cmds.h |  14 ++++
 libibverbs/cmd_mr.c                      |  38 +++++++++
 libibverbs/driver.h                      |   7 ++
 libibverbs/dummy_ops.c                   |  11 +++
 libibverbs/libibverbs.map.in             |   6 ++
 libibverbs/man/ibv_reg_mr.3              |  21 ++++-
 libibverbs/verbs.c                       |  19 +++++
 libibverbs/verbs.h                       |  10 +++
 providers/mlx5/mlx5.c                    |   2 +
 providers/mlx5/mlx5.h                    |   3 +
 providers/mlx5/verbs.c                   |  23 ++++++
 pyverbs/CMakeLists.txt                   |   2 +
 pyverbs/dmabuf.pxd                       |  13 ++++
 pyverbs/dmabuf.pyx                       |  58 ++++++++++++++
 pyverbs/libibverbs.pxd                   |   2 +
 pyverbs/mr.pxd                           |   5 ++
 pyverbs/mr.pyx                           |  77 +++++++++++++++++-
 tests/test_mr.py                         | 130 ++++++++++++++++++++++++++++++-
 tests/utils.py                           |  31 +++++++-
 19 files changed, 464 insertions(+), 8 deletions(-)
 create mode 100644 pyverbs/dmabuf.pxd
 create mode 100644 pyverbs/dmabuf.pyx