On 7/20/2021 11:16 AM, Yishai Hadas wrote:
This series introduces mlx5 user space driver over VFIO. This enables an application to take full ownership on the opened device and run any firmware command (e.g. port up/down) without any concern to hurt someone else. The application look and feel is like regular RDMA application over DEVX, it uses verbs API to open/close a device and then mostly uses DEVX APIs to interact with the device. To achieve it, few mlx5 DV APIs were introduced, it includes: - An API to get ibv_device for a given mlx5 PCI name. - APIs to manage device specific events. Detailed man pages were added to describe the expected usage of those APIs. The mlx5 VFIO driver implemented the basic verbs APIs as of managing MR/PD and the DEVX APIs which are required to write an RDMA application. The VFIO uAPIs were used to setup mlx5 vfio context by reading the device initialization segment, setup DMA and enables the device command interface. In addition, the series includes pyverbs stuff which runs DEVX like testing over RDMA and VFIO mlx5 devices. Some extra documentation of the benefits and the motivation to use VFIO can be found here [1]. PR was sent [2]. [1] https://www.kernel.org/doc/html/latest/driver-api/vfio.html [2] https://github.com/linux-rdma/rdma-core/pull/1034 Yishai Edward Srouji (10): pyverbs: Support DevX UMEM registration pyverbs/mlx5: Support EQN querying pyverbs/mlx5: Support more DevX objects pyverbs: Add auxiliary memory functions pyverbs/mlx5: Add support to extract mlx5dv objects pyverbs/mlx5: Wrap mlx5_cqe64 struct and add enums tests: Add MAC address to the tests' args tests: Add mlx5 DevX data path test pyverbs/mlx5: Support mlx5 devices over VFIO tests: Add a test for mlx5 over VFIO Maor Gottlieb (1): mlx5: Enable debug functionality for vfio Mark Zhang (5): util: Add interval_set support mlx5: Support fast teardown over vfio mlx5: VFIO poll_health support mlx5: Set DV context ops mlx5: Implement mlx5dv devx_obj APIs over vfio Yishai Hadas (11): Update kernel headers mlx5: Introduce mlx5dv_get_vfio_device_list() verbs: Enable verbs_open_device() to work over non sysfs devices mlx5: Setup mlx5 vfio context mlx5: Add mlx5_vfio_cmd_exec() support mlx5: vfio setup function support mlx5: vfio setup basic caps mlx5: Enable interrupt command mode over vfio mlx5: Introduce vfio APIs to process events mlx5: Implement basic verbs operation for PD and MR over vfio mlx5: Support initial DEVX/DV APIs over vfio Documentation/pyverbs.md | 34 + debian/ibverbs-providers.symbols | 4 + kernel-headers/CMakeLists.txt | 4 + kernel-headers/linux/vfio.h | 1374 ++++++++ libibverbs/device.c | 39 +- libibverbs/sysfs.c | 5 + providers/mlx5/CMakeLists.txt | 3 +- providers/mlx5/dr_rule.c | 10 +- providers/mlx5/libmlx5.map | 7 + providers/mlx5/man/CMakeLists.txt | 3 + .../mlx5/man/mlx5dv_get_vfio_device_list.3.md | 64 + providers/mlx5/man/mlx5dv_vfio_get_events_fd.3.md | 41 + providers/mlx5/man/mlx5dv_vfio_process_events.3.md | 43 + providers/mlx5/mlx5.c | 376 ++- providers/mlx5/mlx5.h | 187 +- providers/mlx5/mlx5_ifc.h | 1206 ++++++- providers/mlx5/mlx5_vfio.c | 3379 ++++++++++++++++++++ providers/mlx5/mlx5_vfio.h | 329 ++ providers/mlx5/mlx5dv.h | 25 + providers/mlx5/verbs.c | 966 +++++- pyverbs/CMakeLists.txt | 7 + pyverbs/dma_util.pyx | 25 + pyverbs/mem_alloc.pyx | 46 +- pyverbs/pd.pyx | 4 + pyverbs/providers/mlx5/CMakeLists.txt | 4 +- pyverbs/providers/mlx5/libmlx5.pxd | 103 +- pyverbs/providers/mlx5/mlx5_vfio.pxd | 15 + pyverbs/providers/mlx5/mlx5_vfio.pyx | 116 + pyverbs/providers/mlx5/mlx5dv.pxd | 20 + pyverbs/providers/mlx5/mlx5dv.pyx | 277 +- pyverbs/providers/mlx5/mlx5dv_enums.pxd | 42 + pyverbs/providers/mlx5/mlx5dv_objects.pxd | 28 + pyverbs/providers/mlx5/mlx5dv_objects.pyx | 214 ++ tests/CMakeLists.txt | 3 + tests/args_parser.py | 5 + tests/base.py | 14 +- tests/mlx5_base.py | 460 ++- tests/mlx5_prm_structs.py | 1046 ++++++ tests/test_mlx5_devx.py | 23 + tests/test_mlx5_vfio.py | 104 + util/CMakeLists.txt | 2 + util/interval_set.c | 208 ++ util/interval_set.h | 77 + util/util.h | 5 + 44 files changed, 10650 insertions(+), 297 deletions(-) create mode 100644 kernel-headers/linux/vfio.h create mode 100644 providers/mlx5/man/mlx5dv_get_vfio_device_list.3.md create mode 100644 providers/mlx5/man/mlx5dv_vfio_get_events_fd.3.md create mode 100644 providers/mlx5/man/mlx5dv_vfio_process_events.3.md create mode 100644 providers/mlx5/mlx5_vfio.c create mode 100644 providers/mlx5/mlx5_vfio.h create mode 100644 pyverbs/dma_util.pyx create mode 100644 pyverbs/providers/mlx5/mlx5_vfio.pxd create mode 100644 pyverbs/providers/mlx5/mlx5_vfio.pyx create mode 100644 pyverbs/providers/mlx5/mlx5dv_objects.pxd create mode 100644 pyverbs/providers/mlx5/mlx5dv_objects.pyx create mode 100644 tests/mlx5_prm_structs.py create mode 100644 tests/test_mlx5_devx.py create mode 100644 tests/test_mlx5_vfio.py create mode 100644 util/interval_set.c create mode 100644 util/interval_set.h
The PR was merged. Yishai
