The HIP09 introduces the DCA(Dynamic Context Attachment) feature which supports many RC QPs to share the WQE buffer in a memory pool. If a QP enables DCA feature, the WQE's buffer will not be allocated when creating but when the users start to post WRs. This will reduce the memory consumption when there are too many QPs are inactive. For more detailed information, please refer to the man pages provided by the last patch of this series. This series is associated with the kernel one "RDMA/hns: Add support for Dynamic Context Attachment", and two RFC versions of this series has been sent before. Changes since v1: * Add DCA pyverbs test cases. * Add a shared memory mechanism to synchronize status of DCA. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1620652384-34097-1-git-send-email-liweihang@xxxxxxxxxx/ No changes since RFC v2. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1614847759-33139-1-git-send-email-liweihang@xxxxxxxxxx/ Changes since RFC v1: * Add direct verbs to set the parameters about size that used to configuring DCA. * Add man pages to explain what is DCA, how does it works and how to use it. * Link: https://patchwork.kernel.org/project/linux-rdma/cover/1612667574-56673-1-git-send-email-liweihang@xxxxxxxxxx/ Wenpeng Liang (1): Update kernel headers Xi Wang (9): libhns: Introduce DCA for RC QP libhns: Add support for shrinking DCA memory pool libhns: Add support for attaching QP's WQE buffer libhns: Use shared memory to sync DCA status libhns: Sync DCA status by shared memory libhns: Add direct verbs support to config DCA libhns: Add man pages to introduce DCA feature pyverbs/hns: Initial support for HNS direct verbs tests: Add traffic test of send on HNS DCA QPEx CMakeLists.txt | 1 + debian/control | 2 +- debian/ibverbs-providers.install | 1 + debian/ibverbs-providers.lintian-overrides | 4 +- debian/ibverbs-providers.symbols | 6 + debian/libibverbs-dev.install | 6 + kernel-headers/rdma/hns-abi.h | 86 ++++++ kernel-headers/rdma/mlx5-abi.h | 17 +- providers/hns/CMakeLists.txt | 9 +- providers/hns/hns_roce_u.c | 229 ++++++++++++++-- providers/hns/hns_roce_u.h | 88 +++++- providers/hns/hns_roce_u_abi.h | 7 +- providers/hns/hns_roce_u_buf.c | 422 +++++++++++++++++++++++++++++ providers/hns/hns_roce_u_hw_v2.c | 178 ++++++++++-- providers/hns/hns_roce_u_hw_v2.h | 7 + providers/hns/hns_roce_u_verbs.c | 67 ++++- providers/hns/hnsdv.h | 65 +++++ providers/hns/libhns.map | 9 + providers/hns/man/CMakeLists.txt | 7 + providers/hns/man/hns_dca.7.md | 35 +++ providers/hns/man/hnsdv.7.md | 34 +++ providers/hns/man/hnsdv_create_qp.3.md | 69 +++++ providers/hns/man/hnsdv_is_supported.3.md | 39 +++ providers/hns/man/hnsdv_open_device.3.md | 74 +++++ pyverbs/CMakeLists.txt | 1 + pyverbs/providers/hns/CMakeLists.txt | 7 + pyverbs/providers/hns/__init__.pxd | 0 pyverbs/providers/hns/__init__.py | 0 pyverbs/providers/hns/hns_enums.pyx | 1 + pyverbs/providers/hns/hnsdv.pxd | 25 ++ pyverbs/providers/hns/hnsdv.pyx | 158 +++++++++++ pyverbs/providers/hns/hnsdv_enums.pxd | 21 ++ pyverbs/providers/hns/libhns.pxd | 28 ++ redhat/rdma-core.spec | 7 +- suse/rdma-core.spec | 21 +- tests/hns_base.py | 80 ++++++ tests/test_hns_dca.py | 37 +++ 37 files changed, 1781 insertions(+), 67 deletions(-) create mode 100644 providers/hns/hnsdv.h create mode 100644 providers/hns/libhns.map create mode 100644 providers/hns/man/CMakeLists.txt create mode 100644 providers/hns/man/hns_dca.7.md create mode 100644 providers/hns/man/hnsdv.7.md create mode 100644 providers/hns/man/hnsdv_create_qp.3.md create mode 100644 providers/hns/man/hnsdv_is_supported.3.md create mode 100644 providers/hns/man/hnsdv_open_device.3.md create mode 100644 pyverbs/providers/hns/CMakeLists.txt create mode 100644 pyverbs/providers/hns/__init__.pxd create mode 100644 pyverbs/providers/hns/__init__.py create mode 120000 pyverbs/providers/hns/hns_enums.pyx create mode 100644 pyverbs/providers/hns/hnsdv.pxd create mode 100644 pyverbs/providers/hns/hnsdv.pyx create mode 100644 pyverbs/providers/hns/hnsdv_enums.pxd create mode 100644 pyverbs/providers/hns/libhns.pxd create mode 100644 tests/hns_base.py create mode 100644 tests/test_hns_dca.py -- 2.8.1
