From patchwork Tue May 7 13:38:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Gurtovoy X-Patchwork-Id: 10932949 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A354B15A6 for ; Tue, 7 May 2019 13:38:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 95786288C6 for ; Tue, 7 May 2019 13:38:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 88F6D288EA; Tue, 7 May 2019 13:38:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 06FB3288D3 for ; Tue, 7 May 2019 13:38:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726428AbfEGNio (ORCPT ); Tue, 7 May 2019 09:38:44 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:40247 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726522AbfEGNio (ORCPT ); Tue, 7 May 2019 09:38:44 -0400 Received: from Internal Mail-Server by MTLPINE2 (envelope-from maxg@mellanox.com) with ESMTPS (AES256-SHA encrypted); 7 May 2019 16:38:39 +0300 Received: from r-vnc08.mtr.labs.mlnx (r-vnc08.mtr.labs.mlnx [10.208.0.121]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x47DcdF0021865; Tue, 7 May 2019 16:38:39 +0300 From: Max Gurtovoy To: leonro@mellanox.com, linux-rdma@vger.kernel.org, sagi@grimberg.me, jgg@mellanox.com, dledford@redhat.com, hch@lst.de, bvanassche@acm.org Cc: israelr@mellanox.com, idanb@mellanox.com, oren@mellanox.com, vladimirk@mellanox.com, shlomin@mellanox.com, maxg@mellanox.com Subject: [PATCH 00/25 V4] Introduce new API for T10-PI offload Date: Tue, 7 May 2019 16:38:14 +0300 Message-Id: <1557236319-9986-1-git-send-email-maxg@mellanox.com> X-Mailer: git-send-email 1.7.8.2 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hello Sagi, Christoph, Jason, Doug, Leon and Co This patchset adds a new verbs API for T10-PI offload and implementation for iSER initiator and iSER target (NVMe-oF/RDMA host side was completed and will be sent on a different patchset). This set starts with a few preparation commits to the RDMA/core layer. It continues with introducing a new MR type IB_MR_TYPE_INTEGRITY. Using this MR all the needed mappings will be done in the low level drivers and not be visible to the ULP. Later patches implement the needed functionality in the mlx5 layer. As suggested by Sagi, in the new API, the mlx5 driver will allocate a single internal memory region for the UMR operation to register both PI and data SG lists and it will look like: data start meta start | | ------------------------- |d1|d2|d3|d4|m1|m2|m3|m4| ------------------------- The sig_mr stride block would be using the same lkey but different offsets in it (offset 0 and offset d1+d2+d3+d4). The verbs layer will use a special mr type that will describe everything and will replace the old API, that enforce using 3 different memory regions (data_mr, protection_mr, sig_mr) and their local invalidations. This will ease the code in the ULP and will improve the abstraction of the HW (see iSER code changes). The patchset contains also iSER initator patches that using this new API. For iSER, the code was tested vs. LIO iSER target using Mellanox's ConnectX-4/ConnectX-5. This series applies cleanly on top of kernel 5.1.0 tag. We should aim to push this code during the next merge window. Linux fork with this series can be found at: https://github.com/Mellanox/NVMEoF-P2P (t10_new_api_iser-5_1 branch). Next steps are: - merge NVMe-oF/RDMA host side after merging this patchset - Implement metadata support for NVMe-oF/RDMA target side with new API --------- Changes since v3: - Add new mr types IB_MR_TYPE_USER and IB_MR_TYPE_DMA at patch 02/25 - Fix kernel-doc syntax at include/rdma/signature.h - Remove struct ib_scaterlist - Rebase the code over kernel 5.1.0 - Added Reviewed-by signatures - Use new API in iSER LIO target and remove the old API - If possibe, avoid doing a UMR operation to register data and protection buffers at patch 25/25 --------- Changes since v2: - Rename IB_MR_TYPE_PI to IB_MR_TYPE_INTEGRITY (Sagi) - Rename IB_WR_REG_PI_MR to IB_WR_REG_MR_INTEGRITY (Sagi) - Refactor iser_login_rsp (Christoph) - Unwind WR union at iser_tx_desc (patch 16/18 - Christoph) - Rebase the code over kernel 5.0 plus 2 iser fixes - Added Reviewed-by signatures --------- Changes since v1: - Add a missing comma at patch 01/17 - Fix coding style at patches 03/17, 05/17 and 09/17 - Fix srp_map_finish_fr function at patch 04/17 - Rebase the code over 5.0-rc5 --------- Israel Rukshin (12): RDMA/core: Introduce IB_MR_TYPE_INTEGRITY and ib_alloc_mr_integrity API IB/iser: Refactor iscsi_iser_check_protection function IB/iser: Use IB_WR_REG_MR_INTEGRITY for PI handover IB/iser: Unwind WR union at iser_tx_desc IB/iser: Remove unused sig_attrs argument IB/isert: Remove unused sig_attrs argument RDMA/core: Add an integrity MR pool support RDMA/rw: Fix doc typo RDMA/rw: Print the correct number of sig MRs RDMA/rw: Use IB_WR_REG_MR_INTEGRITY for PI handover RDMA/core: Remove unused IB_WR_REG_SIG_MR code RDMA/mlx5: Improve PI handover performance Max Gurtovoy (13): RDMA/core: Introduce new header file for signature operations RDMA/core: Save the MR type in the ib_mr structure RDMA/core: Introduce ib_map_mr_sg_pi to map data/protection sgl's RDMA/core: Add signature attrs element for ib_mr structure RDMA/mlx5: Implement mlx5_ib_map_mr_sg_pi and mlx5_ib_alloc_mr_integrity RDMA/mlx5: Add attr for max number page list length for PI operation RDMA/mlx5: Pass UMR segment flags instead of boolean RDMA/mlx5: Update set_sig_data_segment attribute for new signature API RDMA/mlx5: Introduce and implement new IB_WR_REG_MR_INTEGRITY work request RDMA/mlx5: Move signature_en attribute from mlx5_qp to ib_qp RDMA/core: Validate signature handover device cap RDMA/rw: Add info regarding SG count failure RDMA/mlx5: Use PA mapping for PI handover drivers/infiniband/core/device.c | 2 + drivers/infiniband/core/mr_pool.c | 8 +- drivers/infiniband/core/rw.c | 200 +++++++------- drivers/infiniband/core/uverbs_cmd.c | 2 + drivers/infiniband/core/uverbs_std_types_mr.c | 1 + drivers/infiniband/core/verbs.c | 105 +++++++- drivers/infiniband/hw/mlx5/main.c | 4 + drivers/infiniband/hw/mlx5/mlx5_ib.h | 20 +- drivers/infiniband/hw/mlx5/mr.c | 367 +++++++++++++++++++++++++- drivers/infiniband/hw/mlx5/qp.c | 217 ++++++++++----- drivers/infiniband/hw/vmw_pvrdma/pvrdma.h | 2 +- drivers/infiniband/ulp/iser/iscsi_iser.c | 12 +- drivers/infiniband/ulp/iser/iscsi_iser.h | 64 +---- drivers/infiniband/ulp/iser/iser_initiator.c | 12 +- drivers/infiniband/ulp/iser/iser_memory.c | 123 ++++----- drivers/infiniband/ulp/iser/iser_verbs.c | 103 +++----- drivers/infiniband/ulp/isert/ib_isert.c | 15 +- drivers/nvme/host/rdma.c | 2 +- include/linux/mlx5/qp.h | 3 +- include/rdma/ib_verbs.h | 165 +++--------- include/rdma/mr_pool.h | 2 +- include/rdma/rw.h | 9 - include/rdma/signature.h | 120 +++++++++ 23 files changed, 1001 insertions(+), 557 deletions(-) create mode 100644 include/rdma/signature.h