From patchwork Tue Jun 11 15:52:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Gurtovoy X-Patchwork-Id: 10987611 X-Patchwork-Delegate: jgg@ziepe.ca 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 1E0C514BB for ; Tue, 11 Jun 2019 15:53:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D1C82881E for ; Tue, 11 Jun 2019 15:53:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 018E1287F5; Tue, 11 Jun 2019 15:53:08 +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 12DA32881E for ; Tue, 11 Jun 2019 15:53:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391012AbfFKPxH (ORCPT ); Tue, 11 Jun 2019 11:53:07 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:33064 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2391827AbfFKPxG (ORCPT ); Tue, 11 Jun 2019 11:53:06 -0400 Received: from Internal Mail-Server by MTLPINE2 (envelope-from maxg@mellanox.com) with ESMTPS (AES256-SHA encrypted); 11 Jun 2019 18:53:00 +0300 Received: from r-vnc12.mtr.labs.mlnx (r-vnc12.mtr.labs.mlnx [10.208.0.12]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x5BFqxL9023036; Tue, 11 Jun 2019 18:52:59 +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: maxg@mellanox.com, israelr@mellanox.com, idanb@mellanox.com, oren@mellanox.com, vladimirk@mellanox.com, shlomin@mellanox.com Subject: [PATCH 07/21] RDMA/mlx5: Add attr for max number page list length for PI operation Date: Tue, 11 Jun 2019 18:52:43 +0300 Message-Id: <1560268377-26560-8-git-send-email-maxg@mellanox.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1560268377-26560-1-git-send-email-maxg@mellanox.com> References: <1560268377-26560-1-git-send-email-maxg@mellanox.com> 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 PI offload (protection information) is a feature that each RDMA provider can implement differently. Thus, introduce new device attribute to define the maximal length of the page list for PI fast registration operation. For example, mlx5 driver uses a single internal MR to map both data and protection SGL's, so it's equal to max_fast_reg_page_list_len / 2. Signed-off-by: Max Gurtovoy Reviewed-by: Leon Romanovsky Reviewed-by: Christoph Hellwig --- drivers/infiniband/hw/mlx5/main.c | 2 ++ include/rdma/ib_verbs.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index f4880259c8ac..1458f1b18d19 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1008,6 +1008,8 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, props->max_srq_sge = max_rq_sg - 1; props->max_fast_reg_page_list_len = 1 << MLX5_CAP_GEN(mdev, log_max_klm_list_size); + props->max_pi_fast_reg_page_list_len = + props->max_fast_reg_page_list_len / 2; get_atomic_caps_qp(dev, props); props->masked_atomic_cap = IB_ATOMIC_NONE; props->max_mcast_grp = 1 << MLX5_CAP_GEN(mdev, log_max_mcg); diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 88f8970a4b16..3ca33bf12b30 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -401,6 +401,7 @@ struct ib_device_attr { int max_srq_wr; int max_srq_sge; unsigned int max_fast_reg_page_list_len; + unsigned int max_pi_fast_reg_page_list_len; u16 max_pkeys; u8 local_ca_ack_delay; int sig_prot_cap;