linux/include/uapi/rdma, branch v6.4

RDMA/efa: Add rdma write capability to device caps

2023-04-21T22:18:58Z

Add rdma write capability that is propagated from the device to rdma-core. Enable MR creation with remote write permissions according to this device capability. Link: https://lore.kernel.org/r/20230404154313.35194-1-ynachum@amazon.com Reviewed-by: Firas Jahjah Reviewed-by: Michael Margolin Signed-off-by: Yonatan Nachum Signed-off-by: Jason Gunthorpe

RDMA/bnxt_re: Add resize_cq support

2023-03-29T07:03:43Z

Add resize_cq verb support for user space CQs. Resize operation for kernel CQs are not supported now. Driver should free the current CQ only after user library polls for all the completions and switch to new CQ. So after the resize_cq is returned from the driver, user library polls for existing completions and store it as temporary data. Once library reaps all completions in the current CQ, it invokes the ibv_cmd_poll_cq to inform the driver about the resize_cq completion. Adding a check for user CQs in driver's poll_cq and complete the resize operation for user CQs. Updating uverbs_cmd_mask with poll_cq to support this. Signed-off-by: Selvin Xavier Link: https://lore.kernel.org/r/1678868215-23626-1-git-send-email-selvin.xavier@broadcom.com Signed-off-by: Leon Romanovsky

RDMA/efa: Add data polling capability feature bit

2023-03-22T17:41:58Z

Add feature bit to existing device caps field. EFA supports data polling of 128 bytes blocks. The flag indicates that the NIC guarentees that a 128 byte aligned block is written in order, ie that observing the last 8 bits of the block mean the prior 127 bytes are also written. It is useful for "last data polling" acceleration techniques. Link: https://lore.kernel.org/r/20230219081328.10419-1-mrgolin@amazon.com Reviewed-by: Yehuda Yitschak Reviewed-by: Yossi Leybovich Signed-off-by: Yonatan Nachum Signed-off-by: Michael Margolin Acked-by: Gal Pressman Signed-off-by: Jason Gunthorpe

RDMA/hns: Support cqe inline in user space

2023-01-09T14:45:28Z

Enable the CQEIE field and configure the CQEIS field of QPC. And add compatibility handling. Link: https://lore.kernel.org/r/20221224102201.3114536-4-xuhaoyue1@hisilicon.com Signed-off-by: Luoyouming Signed-off-by: Haoyue Xu Signed-off-by: Jason Gunthorpe

RDMA/hns: Add compatibility handling for only support userspace rq inline

2023-01-09T14:45:28Z

The rq inline makes some changes as follows, Firstly, it is only used in user space. Secondly, it should notify hardware in QP RTR status. Thirdly, Add compatibility processing between different user space and kernel space. Link: https://lore.kernel.org/r/20221224102201.3114536-3-xuhaoyue1@hisilicon.com Signed-off-by: Luoyouming Signed-off-by: Haoyue Xu Signed-off-by: Jason Gunthorpe

RDMA/rxe: Extend rxe user ABI to support flush

2022-12-09T23:36:01Z

This commit extends the rxe user ABI to support the flush operation defined in IBA A19.4.1. These changes are backward compatible with the existing rxe user ABI. The user API request a flush by filling this structure. Link: https://lore.kernel.org/r/20221206130201.30986-4-lizhijian@fujitsu.com Reviewed-by: Zhu Yanjun Signed-off-by: Li Zhijian Signed-off-by: Jason Gunthorpe

RDMA: Extend RDMA user ABI to support flush

2022-12-09T23:36:01Z

This commit extends the RDMA user ABI to support the flush operation defined in IBA A19.4.1. These changes are backward compatible with the existing RDMA user ABI. Link: https://lore.kernel.org/r/20221206130201.30986-2-lizhijian@fujitsu.com Reviewed-by: Zhu Yanjun Signed-off-by: Li Zhijian Signed-off-by: Jason Gunthorpe

RDMA/rxe: Extend rxe user ABI to support atomic write

2022-12-01T23:51:09Z

Define an atomic_wr array to store 8-byte value. Link: https://lore.kernel.org/r/1669905432-14-4-git-send-email-yangx.jy@fujitsu.com Signed-off-by: Xiao Yang Signed-off-by: Jason Gunthorpe

RDMA: Extend RDMA user ABI to support atomic write

2022-12-01T23:51:08Z

1) Define new atomic write request/completion in userspace. 2) Define new atomic write capability in userspace. Link: https://lore.kernel.org/r/1669905432-14-2-git-send-email-yangx.jy@fujitsu.com Signed-off-by: Xiao Yang Signed-off-by: Jason Gunthorpe

RDMA/hns: Fix incorrect sge nums calculation

2022-11-19T00:19:49Z

The user usually configures the number of sge through the max_send_sge parameter when creating qp, and configures the maximum size of inline data that can be sent through max_inline_data. Inline uses sge to fill data to send. Expect the following: 1) When the sge space cannot hold inline data, the sge space needs to be expanded to accommodate all inline data 2) When the sge space is enough to accommodate inline data, the upper limit of inline data can be increased so that users can send larger inline data Currently case one is not implemented. When the inline data is larger than the sge space, an error of insufficient sge space occurs. This part of the code needs to be reimplemented according to the expected rules. The calculation method of sge num is modified to take the maximum value of max_send_sge and the sge for max_inline_data to solve this problem. Fixes: 05201e01be93 ("RDMA/hns: Refactor process of setting extended sge") Fixes: 30b707886aeb ("RDMA/hns: Support inline data in extented sge space for RC") Link: https://lore.kernel.org/r/20221108133847.2304539-3-xuhaoyue1@hisilicon.com Signed-off-by: Luoyouming Signed-off-by: Haoyue Xu Signed-off-by: Jason Gunthorpe