linux-dev/include/uapi/rdma/hns-abi.h, branch master

RDMA/hns: Support direct wqe of userspace

2021-12-14T23:59:07Z

The current write wqe mechanism is to write to DDR first, and then notify the hardware through doorbell to read the data. Direct wqe is a mechanism to fill wqe directly into the hardware. In the case of light load, the wqe will be filled into pcie bar space of the hardware, this will reduce one memory access operation and therefore reduce the latency. SIMD instructions allows cpu to write the 512 bits at one time to device memory, thus it can be used for posting direct wqe. Add direct wqe enable switch and address mapping. Link: https://lore.kernel.org/r/20211207124901.42123-2-liangwenpeng@huawei.com Signed-off-by: Yixing Liu Signed-off-by: Wenpeng Liang Signed-off-by: Jason Gunthorpe

RDMA/hns: Add support for XRC on HIP09

2021-03-11T23:51:27Z

The HIP09 supports XRC transport service, it greatly saves the number of QPs required to connect all processes in a large cluster. Link: https://lore.kernel.org/r/1614826558-35423-1-git-send-email-liweihang@huawei.com Signed-off-by: Wenpeng Liang Signed-off-by: Weihang Li Signed-off-by: Jason Gunthorpe

RDMA/hns: Move capability flags of QP and CQ to hns-abi.h

2020-12-07T19:48:51Z

These flags will be returned to the userspace through ABI, so they should be defined in hns-abi.h. Furthermore, there is no need to include hns-abi.h in every source files, it just needs to be included in the common header file. Link: https://lore.kernel.org/r/1606872560-17823-1-git-send-email-liweihang@huawei.com Reported-by: kernel test robot Signed-off-by: Weihang Li Signed-off-by: Jason Gunthorpe

RDMA/hns: Add support for CQE in size of 64 Bytes

2020-09-24T18:35:11Z

The new version of RoCEE supports using CQE in size of 32B or 64B. The performance of bus can be improved by using larger size of CQE. Link: https://lore.kernel.org/r/1600245806-56321-3-git-send-email-liweihang@huawei.com Signed-off-by: Wenpeng Liang Signed-off-by: Weihang Li Signed-off-by: Jason Gunthorpe

RDMA/hns: Update the kernel header file of hns

2019-01-25T16:55:48Z

The hns_roce_ib_create_srq_resp is used to interact with the user for data, this was open coded to use a u32 directly, instead use a properly sized structure. Fixes: c7bcb13442e1 ("RDMA/hns: Add SRQ support for hip08 kernel mode") Signed-off-by: Lijun Ou Signed-off-by: Jason Gunthorpe

RDMA/hns: Add SRQ support for hip08 kernel mode

2018-12-05T14:59:13Z

This patch implements the SRQ(Share Receive Queue) verbs and update the poll cq verbs to deal with SRQ complentions. Signed-off-by: Lijun Ou Signed-off-by: Jason Gunthorpe

RDMA/hns: Support flush cqe for hip08 in kernel space

2018-08-03T02:03:25Z

According to IB protocol, there are some cases that work requests must return the flush error completion status through the completion queue. Due to hardware limitation, the driver needs to assist the flush process. This patch adds the support of flush cqe for hip08 in the cases that needed, such as poll cqe, post send, post recv and aeqe handle. The patch also considered the compatibility between kernel and user space. Signed-off-by: Yixian Liu Signed-off-by: Jason Gunthorpe

uapi: Fix SPDX tags for files referring to the 'OpenIB.org' license

2018-04-23T15:10:33Z

Based on discussion with Kate Stewart this license is not a BSD-2-Clause, but is now formally identified as Linux-OpenIB by SPDX. The key difference between the licenses is in the 'warranty' paragraph. if_infiniband.h refers to the 'OpenIB.org' license, but does not include the text, instead it links to an obsolete web site that contains a license that matches the BSD-2-Clause SPX. There is no 'three clause' version of the OpenIB.org license. Signed-off-by: Jason Gunthorpe Acked-by: David S. Miller Signed-off-by: Doug Ledford

RDMA: Change all uapi headers to use __aligned_u64 instead of __u64

2018-03-27T20:25:09Z

The new auditing standard for the subsystem will be to only use __aligned_64 in uapi headers to try and prevent 32/64 compat bugs from existing in the future. Changing all existing usage will help ensure new developers copy the right idea. The before/after of this patch was tested using pahole on 32 and 64 bit compiles to confirm it has no change in the structure layout, so this patch is a NOP. Signed-off-by: Jason Gunthorpe

RDMA/hns: Use structs to describe the uABI instead of opencoding

2018-03-15T21:58:04Z

Open coding a loose value is not acceptable for describing the uABI in RDMA. Provide the missing struct. Signed-off-by: Jason Gunthorpe