From patchwork Thu Feb 7 17:33:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Gurtovoy X-Patchwork-Id: 10801623 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 ED9B617FB for ; Thu, 7 Feb 2019 17:33:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DAA002E34D for ; Thu, 7 Feb 2019 17:33:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CF0372E38B; Thu, 7 Feb 2019 17:33:42 +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 6287E2E34D for ; Thu, 7 Feb 2019 17:33:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726897AbfBGRdl (ORCPT ); Thu, 7 Feb 2019 12:33:41 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:49129 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726850AbfBGRdi (ORCPT ); Thu, 7 Feb 2019 12:33:38 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from maxg@mellanox.com) with ESMTPS (AES256-SHA encrypted); 7 Feb 2019 19:33:33 +0200 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 x17HXVKa025778; Thu, 7 Feb 2019 19:33:32 +0200 From: Max Gurtovoy To: linux-rdma@vger.kernel.org, sagi@grimberg.me, hch@lst.de, leon@kernel.org, jgg@mellanox.com, dledford@redhat.com, bvanassche@acm.org Cc: maxg@mellanox.com, israelr@mellanox.com, idanb@mellanox.com, vladimirk@mellanox.com, shlomin@mellanox.com, oren@mellanox.com Subject: [PATCH 07/17] RDMA/core: Introduce ib_map_mr_sg_pi to map data/protection sgl's Date: Thu, 7 Feb 2019 19:33:21 +0200 Message-Id: <1549560811-8655-8-git-send-email-maxg@mellanox.com> X-Mailer: git-send-email 1.7.8.2 In-Reply-To: <1549560811-8655-1-git-send-email-maxg@mellanox.com> References: <1549560811-8655-1-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 This function will map the previously dma mapped SG lists for PI (protection information) and data to an appropriate memory region for future registration. The given MR must be allocated as IB_MR_TYPE_PI. Signed-off-by: Max Gurtovoy Signed-off-by: Israel Rukshin --- drivers/infiniband/core/device.c | 1 + drivers/infiniband/core/verbs.c | 32 +++++++++++++++++++++++++++++++- include/rdma/ib_verbs.h | 6 ++++++ 3 files changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index bc4c7c5c305b..4c70c2f5a95b 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -1292,6 +1292,7 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops) SET_DEVICE_OP(dev_ops, get_vf_config); SET_DEVICE_OP(dev_ops, get_vf_stats); SET_DEVICE_OP(dev_ops, map_mr_sg); + SET_DEVICE_OP(dev_ops, map_mr_sg_pi); SET_DEVICE_OP(dev_ops, map_phys_fmr); SET_DEVICE_OP(dev_ops, mmap); SET_DEVICE_OP(dev_ops, modify_ah); diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index 08aa6715fa12..8e36e451df05 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -2020,7 +2020,8 @@ struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd, { struct ib_mr *mr; - if (!pd->device->ops.alloc_mr_integrity) + if (!pd->device->ops.alloc_mr_integrity || + !pd->device->ops.map_mr_sg_pi) return ERR_PTR(-EOPNOTSUPP); if (!max_num_meta_sg) @@ -2402,6 +2403,35 @@ int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid, } EXPORT_SYMBOL(ib_set_vf_guid); +/** + * ib_map_mr_sg_pi() - Map the dma mapped SG lists for PI (protection + * information) and set an appropriate memory region for registration. + * @mr: memory region + * @data_ib_sg: dma mapped scatterlist for data + * @meta_ib_sg: dma mapped scatterlist for metadata + * @page_size: page vector desired page size + * + * Constraints: + * - The MR must be allocated with type IB_MR_TYPE_PI. + * + * Returns the number of sg elements that were mapped to the memory region. + * + * After this completes successfully, the memory region + * is ready for registration. + */ +int ib_map_mr_sg_pi(struct ib_mr *mr, struct ib_scatterlist *data_ib_sg, + struct ib_scatterlist *meta_ib_sg, unsigned int page_size) +{ + if (unlikely(!mr->device->ops.map_mr_sg_pi || + WARN_ON_ONCE(mr->type != IB_MR_TYPE_PI))) + return -EOPNOTSUPP; + + mr->page_size = page_size; + + return mr->device->ops.map_mr_sg_pi(mr, data_ib_sg, meta_ib_sg); +} +EXPORT_SYMBOL(ib_map_mr_sg_pi); + /** * ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list * and set it the memory region. diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index b8081ca07e63..134d13ab39e5 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2393,6 +2393,10 @@ struct ib_device_ops { int (*read_counters)(struct ib_counters *counters, struct ib_counters_read_attr *counters_read_attr, struct uverbs_attr_bundle *attrs); + int (*map_mr_sg_pi)(struct ib_mr *mr, + struct ib_scatterlist *data_ib_sg, + struct ib_scatterlist *meta_ib_sg); + /** * alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the * driver initialized data. The struct is kfree()'ed by the sysfs @@ -3874,6 +3878,8 @@ int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table); int ib_map_mr_sg(struct ib_mr *mr, struct ib_scatterlist *ib_sg, unsigned int page_size); +int ib_map_mr_sg_pi(struct ib_mr *mr, struct ib_scatterlist *data_ib_sg, + struct ib_scatterlist *meta_ib_sg, unsigned int page_size); static inline int ib_map_mr_sg_zbva(struct ib_mr *mr, struct ib_scatterlist *ib_sg,