From patchwork Thu May 30 13:25:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Gurtovoy X-Patchwork-Id: 10968731 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 AB61918EC for ; Thu, 30 May 2019 13:25:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9E43E28979 for ; Thu, 30 May 2019 13:25:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9C96F28B16; Thu, 30 May 2019 13:25:43 +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 4446828B8F for ; Thu, 30 May 2019 13:25:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726461AbfE3NZm (ORCPT ); Thu, 30 May 2019 09:25:42 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:34940 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726418AbfE3NZl (ORCPT ); Thu, 30 May 2019 09:25:41 -0400 Received: from Internal Mail-Server by MTLPINE2 (envelope-from maxg@mellanox.com) with ESMTPS (AES256-SHA encrypted); 30 May 2019 16:25:32 +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 x4UDPVZZ007883; Thu, 30 May 2019 16:25:32 +0300 From: Max Gurtovoy To: leonro@mellanox.com, linux-rdma@vger.kernel.org, jgg@mellanox.com, dledford@redhat.com, sagi@grimberg.me, 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 07/20] RDMA/mlx5: Add attr for max number page list length for PI operation Date: Thu, 30 May 2019 16:25:18 +0300 Message-Id: <1559222731-16715-8-git-send-email-maxg@mellanox.com> X-Mailer: git-send-email 1.7.8.2 In-Reply-To: <1559222731-16715-1-git-send-email-maxg@mellanox.com> References: <1559222731-16715-1-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 --- 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 b6588cdef1cf..7b48aeafef9e 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 0a1713b86398..6e30ca4f1ef5 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;