On Tue, 2018-10-09 at 12:05 +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
>
> Changelog v0->v1:
> * Changed patch #3 to use check_mask function from rdma-core instead define.
>
> --------------------------------------------------------------------------
> From Yonatan,
>
> Scatter to CQE is a HW offload feature that saves PCI writes by
> scattering the payload to the CQE.
>
> The feature depends on the CQE size and if the CQE size is 64B, it will
> work for payload smaller than 32. If the CQE size is 128B, it will work for
> payload smaller than 64.
>
> The feature works for responder and requestor:
> 1. For responder, if the payload is small as required above, the data
> will be part of the CQE, and thus we save another PCI transaction the recv buffers.
> 2. For requestor, this can be used to get the RDMA_READ response and
> RDMA_ATOMIC response in the CQE. This feature is already supported in upstream.
>
> As part of this series, we are adding support for DC transport type and
> ability to enable the feature (force enable) in the requestor when SQ
> is not configured to signal all WRs.
>
> Thanks
>
> Yonatan Cohen (4):
> net/mlx5: Expose DC scatter to CQE capability bit
> IB/mlx5: Support scatter to CQE for DC transport type
> IB/mlx5: Verify that driver supports user flags
> IB/mlx5: Allow scatter to CQE without global signaled WRs
>
> drivers/infiniband/hw/mlx5/cq.c | 2 +-
> drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 +-
> drivers/infiniband/hw/mlx5/qp.c | 93 ++++++++++++++++++++++++++++--------
> include/linux/mlx5/mlx5_ifc.h | 3 +-
> include/uapi/rdma/mlx5-abi.h | 1 +
> 5 files changed, 79 insertions(+), 22 deletions(-)
>
> --
> 2.14.4
>
Hi Leon,
This series looks fine. Let me know when the net/mlx5 portion has been
committed.
--
Doug Ledford <dledford@xxxxxxxxxx>
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