This series from Moni is the supplementary part of the kernel series that was sent upstream for 4.16. It's under final review steps and is sent to demonstrate the expected usage of the DC QP type in the user area around the control path. In General: Vendors can implement types of QPs that are not described in the InfiniBand specification. Verbs layer doesn't know which services this QP provides but it assumes that the hardware driver does. The new QP type IBV_QPT_DRIVER should be used for this kind of QP. Any extra data that describes this QP should be stored in a context in the hardware driver that is associated with this QP. The Dynamically Connected (DC) Transport Service provides a datagram-like model that allows a DC QP to target multiple remote processes in multiple remote nodes. As far as reachability is concerned, the DC model is somewhat similar to the Unreliable Datagram (UD) model in the sense that each WR submitted to the DC SQ carries the information that identifies the remote destination. The patches in this series add the DC support to the mlx5 driver by using the IBV_QPT_DRIVER and some extensions in the mlx5 DV path to create a QP. Yishai Moni Shoua (4): verbs: Introduce driver QP type mlx5: Add interface to create DC transport QPs mlx5: Create DC transport QPs mlx5: Destroy and modify a DC target QP libibverbs/man/ibv_create_qp.3 | 5 +- libibverbs/man/ibv_create_qp_ex.3 | 5 +- libibverbs/verbs.h | 3 +- providers/mlx5/mlx5-abi.h | 24 +++++- providers/mlx5/mlx5.h | 1 + providers/mlx5/mlx5dv.h | 12 +++ providers/mlx5/verbs.c | 156 ++++++++++++++++++++++++++++++++++++-- 7 files changed, 192 insertions(+), 14 deletions(-) -- 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
