On 6/29/2017 2:47 PM, Yishai Hadas wrote:
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
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