wireguard-linux/drivers/infiniband/core/rw.c, branch jd/unified-crypt-queue

RDMA/rw: map P2P memory correctly for signature operations

2020-03-10T15:56:17Z

Since RDMA rw API support operations with P2P memory sg list, make sure to map/unmap the scatter list for signature operation correctly. Link: https://lore.kernel.org/r/20200220100819.41860-2-maxg@mellanox.com Signed-off-by: Max Gurtovoy Signed-off-by: Jason Gunthorpe

RDMA/rw: Fix error flow during RDMA context initialization

2020-02-20T17:19:21Z

In case the SGL was mapped for P2P DMA operation, we must unmap it using pci_p2pdma_unmap_sg during the error unwind of rdma_rw_ctx_init() Fixes: 7f73eac3a713 ("PCI/P2PDMA: Introduce pci_p2pdma_unmap_sg()") Link: https://lore.kernel.org/r/20200220100819.41860-1-maxg@mellanox.com Signed-off-by: Max Gurtovoy Reviewed-by: Leon Romanovsky Reviewed-by: Logan Gunthorpe Signed-off-by: Jason Gunthorpe

RDMA/rw: Support threshold for registration vs scattering to local pages

2019-10-22T17:26:52Z

If there are more scatter entries than the recommended limit provided by the ib device, UMR registration is used. This will provide optimal performance when performing large RDMA READs over devices that advertise the threshold capability. With ConnectX-5 running NVMeoF RDMA with FIO single QP 128KB writes: Without use of cap: 70Gb/sec With use of cap: 84Gb/sec Link: https://lore.kernel.org/r/20191007135933.12483-3-leon@kernel.org Signed-off-by: Yamin Friedman Reviewed-by: Or Gerlitz Signed-off-by: Leon Romanovsky Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe

PCI/P2PDMA: Introduce pci_p2pdma_unmap_sg()

2019-08-16T13:41:26Z

Add pci_p2pdma_unmap_sg() to the two places that call pci_p2pdma_map_sg(). This is a prep patch to introduce correct mappings for p2pdma transactions that go through the root complex. Link: https://lore.kernel.org/r/20190730163545.4915-10-logang@deltatee.com Link: https://lore.kernel.org/r/20190812173048.9186-10-logang@deltatee.com Signed-off-by: Logan Gunthorpe Signed-off-by: Bjorn Helgaas Reviewed-by: Christoph Hellwig

Merge tag 'v5.2-rc6' into rdma.git for-next

2019-06-29T00:18:23Z

For dependencies in next patches. Resolve conflicts: - Use uverbs_get_cleared_udata() with new cq allocation flow - Continue to delete nes despite SPDX conflict - Resolve list appends in mlx5_command_str() - Use u16 for vport_rule stuff - Resolve list appends in struct ib_client Signed-off-by: Jason Gunthorpe

RDMA/rw: Use IB_WR_REG_MR_INTEGRITY for PI handover

2019-06-24T14:49:28Z

Replace the old signature handover API with the new one. The new API simplifes PI handover code complexity for ULPs and improve performance. For RW API it will reduce the maximum number of work requests per task and the need of dealing with multiple MRs (and their registrations and invalidations) per task. All the mappings and registration of the data and the protection buffers is done by the LLD using a single WR and a special MR type (IB_MR_TYPE_INTEGRITY) for the PI handover operation. The setup of the tested benchmark (using iSER ULP): - 2 servers with 24 cores (1 initiator and 1 target) - ConnectX-4/ConnectX-5 adapters - 24 target sessions with 1 LUN each - ramdisk backstore - PI active Performance results running fio (24 jobs, 128 iodepth) using write_generate=1 and read_verify=1 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1243.3K/1182.3K 1725.1K/1680.2K 4k 571233/528835 743293/748259 32k 72388/71086 71789/93573 Using write_generate=0 and read_verify=0 (w/w.o patch): bs IOPS(read) IOPS(write) ---- ---------- ---------- 512 1572.1K/1427.2K 1823.5K/1724.3K 4k 921992/916194 753772/768267 32k 75052/73960 73180/95484 There is a performance degradation when writing big block sizes. Degradation is caused by the complexity of combining multiple indirections and perform RDMA READ operation from it. This will be fixed in the following patches by reducing the indirections if possible. Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe

RDMA/rw: Introduce rdma_rw_inv_key helper

2019-06-24T14:49:27Z

This is a preparation for adding new signature API to the rw-API. Signed-off-by: Israel Rukshin Suggested-by: Christoph Hellwig Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe

RDMA/core: Rename signature qp create flag and signature device capability

2019-06-24T14:49:27Z

Rename IB_QP_CREATE_SIGNATURE_EN to IB_QP_CREATE_INTEGRITY_EN and IB_DEVICE_SIGNATURE_HANDOVER to IB_DEVICE_INTEGRITY_HANDOVER. Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe

RDMA/core: Add an integrity MR pool support

2019-06-24T14:49:27Z

This is a preparation for adding new signature API to the rw-API. Signed-off-by: Israel Rukshin Reviewed-by: Max Gurtovoy Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Jason Gunthorpe

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

2019-06-05T15:36:37Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 263 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Alexios Zavras Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.208660670@linutronix.de Signed-off-by: Greg Kroah-Hartman