This patchset from Maor adds direct access to mlx4 devices, it follows same solution from both API and packaging perspectives as was already accepted for mlx5. The libibverbs API is an abstract API. It is agnostic to any underlying provider specific implementation. While this abstraction has the advantage of user applications portability it has a performance penalty. For some applications optimizing performance is more important than portability. The mlx4 direct verbs API introduced in this patchset is intended for such applications. It exposes mlx4 specific low level data path (send/receive/completion) operations, allowing the application to bypass the libibverbs data path API. The proposed interface consists from one hardware specific header with relevant inline functions and conversion logic from ibverbs structures to mlx4 related structures. New header is going to be installed in below path location: /usr/inlcude/infiniband/mlx4dv.h The direct include of mlx4dv.h together with linkage to mlx4 library will allow usage of this new interface. Pull request was sent: https://github.com/linux-rdma/rdma-core/pull/155 Yishai Maor Gottlieb (7): mlx4: Add mlx4 direct verbs mlx4: Add CQE fields mlx4: Convert datagram segment to use mlx4_av struct mlx4: Add WQE segments implementation mlx4: Convert to use predefined get CQE opcodes mlx4: Add direct verbs man pages mlx4: Export mlx4 direct verbs interface CMakeLists.txt | 1 + debian/ibverbs-providers.install | 1 + debian/ibverbs-providers.symbols | 4 + debian/libibverbs-dev.install | 4 + providers/mlx4/CMakeLists.txt | 7 +- providers/mlx4/cq.c | 65 +---- providers/mlx4/libmlx4.map | 7 + providers/mlx4/man/CMakeLists.txt | 4 + providers/mlx4/man/mlx4dv.7 | 39 +++ providers/mlx4/man/mlx4dv_init_obj.3 | 117 +++++++++ providers/mlx4/mlx4.c | 76 ++++++ providers/mlx4/mlx4.h | 73 +----- providers/mlx4/mlx4dv.h | 465 +++++++++++++++++++++++++++++++++++ providers/mlx4/qp.c | 3 +- providers/mlx4/srq.c | 1 - providers/mlx4/verbs.c | 1 - providers/mlx4/wqe.h | 149 ----------- redhat/rdma-core.spec | 3 + 18 files changed, 743 insertions(+), 277 deletions(-) create mode 100644 providers/mlx4/libmlx4.map create mode 100644 providers/mlx4/man/CMakeLists.txt create mode 100644 providers/mlx4/man/mlx4dv.7 create mode 100644 providers/mlx4/man/mlx4dv_init_obj.3 create mode 100644 providers/mlx4/mlx4dv.h delete mode 100644 providers/mlx4/wqe.h -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
